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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 72 | giacomo | 1 | /* $Id: osmesa.c,v 1.2 2003-03-13 12:20:29 giacomo Exp $ */ |
| 59 | pj | 2 | |
| 3 | /* |
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| 4 | * Mesa 3-D graphics library |
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| 5 | * Version: 5.0 |
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| 6 | * |
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| 7 | * Copyright (C) 1999-2002 Brian Paul All Rights Reserved. |
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| 8 | * |
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| 9 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 10 | * copy of this software and associated documentation files (the "Software"), |
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| 11 | * to deal in the Software without restriction, including without limitation |
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| 12 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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| 13 | * and/or sell copies of the Software, and to permit persons to whom the |
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| 14 | * Software is furnished to do so, subject to the following conditions: |
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| 15 | * |
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| 16 | * The above copyright notice and this permission notice shall be included |
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| 17 | * in all copies or substantial portions of the Software. |
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| 18 | * |
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| 19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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| 20 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 22 | * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
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| 23 | * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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| 24 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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| 25 | */ |
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| 26 | |||
| 27 | |||
| 28 | /* |
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| 29 | * Off-Screen Mesa rendering / Rendering into client memory space |
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| 30 | * |
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| 31 | * Note on thread safety: this driver is thread safe. All |
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| 32 | * functions are reentrant. The notion of current context is |
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| 33 | * managed by the core _mesa_make_current() and _mesa_get_current_context() |
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| 34 | * functions. Those functions are thread-safe. |
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| 35 | */ |
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| 36 | |||
| 37 | |||
| 38 | #include "glheader.h" |
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| 39 | #include "GL/osmesa.h" |
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| 40 | #include "buffers.h" |
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| 41 | #include "context.h" |
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| 42 | #include "colormac.h" |
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| 43 | #include "depth.h" |
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| 44 | #include "extensions.h" |
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| 45 | #include "imports.h" |
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| 46 | #include "macros.h" |
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| 47 | #include "matrix.h" |
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| 48 | #include "mmath.h" |
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| 49 | #include "mtypes.h" |
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| 50 | #include "texformat.h" |
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| 51 | #include "texstore.h" |
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| 52 | #include "array_cache/acache.h" |
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| 53 | #include "swrast/swrast.h" |
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| 54 | #include "swrast_setup/swrast_setup.h" |
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| 55 | #include "swrast/s_context.h" |
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| 56 | #include "swrast/s_depth.h" |
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| 57 | #include "swrast/s_lines.h" |
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| 58 | #include "swrast/s_triangle.h" |
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| 59 | #include "tnl/tnl.h" |
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| 60 | #include "tnl/t_context.h" |
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| 61 | #include "tnl/t_pipeline.h" |
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| 62 | |||
| 63 | |||
| 64 | |||
| 65 | /* |
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| 66 | * This is the OS/Mesa context struct. |
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| 67 | * Notice how it includes a GLcontext. By doing this we're mimicking |
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| 68 | * C++ inheritance/derivation. |
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| 69 | * Later, we can cast a GLcontext pointer into an OSMesaContext pointer |
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| 70 | * or vice versa. |
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| 71 | */ |
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| 72 | struct osmesa_context { |
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| 73 | GLcontext gl_ctx; /* The core GL/Mesa context */ |
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| 74 | GLvisual *gl_visual; /* Describes the buffers */ |
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| 75 | GLframebuffer *gl_buffer; /* Depth, stencil, accum, etc buffers */ |
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| 76 | GLenum format; /* either GL_RGBA or GL_COLOR_INDEX */ |
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| 77 | void *buffer; /* the image buffer */ |
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| 78 | GLint width, height; /* size of image buffer */ |
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| 79 | GLint rowlength; /* number of pixels per row */ |
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| 80 | GLint userRowLength; /* user-specified number of pixels per row */ |
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| 81 | GLint rshift, gshift; /* bit shifts for RGBA formats */ |
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| 82 | GLint bshift, ashift; |
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| 83 | GLint rInd, gInd, bInd, aInd;/* index offsets for RGBA formats */ |
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| 84 | GLchan *rowaddr[MAX_HEIGHT]; /* address of first pixel in each image row */ |
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| 85 | GLboolean yup; /* TRUE -> Y increases upward */ |
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| 86 | /* FALSE -> Y increases downward */ |
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| 87 | }; |
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| 88 | |||
| 89 | |||
| 90 | |||
| 91 | /* A forward declaration: */ |
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| 92 | static void osmesa_update_state( GLcontext *ctx, GLuint newstate ); |
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| 93 | static void osmesa_register_swrast_functions( GLcontext *ctx ); |
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| 94 | |||
| 95 | |||
| 96 | |||
| 97 | #define OSMESA_CONTEXT(ctx) ((OSMesaContext) (ctx->DriverCtx)) |
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| 98 | |||
| 99 | |||
| 100 | |||
| 101 | /**********************************************************************/ |
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| 102 | /***** Public Functions *****/ |
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| 103 | /**********************************************************************/ |
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| 104 | |||
| 105 | |||
| 106 | /* |
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| 107 | * Create an Off-Screen Mesa rendering context. The only attribute needed is |
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| 108 | * an RGBA vs Color-Index mode flag. |
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| 109 | * |
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| 110 | * Input: format - either GL_RGBA or GL_COLOR_INDEX |
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| 111 | * sharelist - specifies another OSMesaContext with which to share |
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| 112 | * display lists. NULL indicates no sharing. |
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| 113 | * Return: an OSMesaContext or 0 if error |
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| 114 | */ |
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| 115 | GLAPI OSMesaContext GLAPIENTRY |
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| 116 | OSMesaCreateContext( GLenum format, OSMesaContext sharelist ) |
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| 117 | { |
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| 118 | return OSMesaCreateContextExt(format, DEFAULT_SOFTWARE_DEPTH_BITS, |
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| 119 | 8, 16, sharelist); |
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| 120 | } |
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| 121 | |||
| 122 | |||
| 123 | |||
| 124 | /* |
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| 125 | * New in Mesa 3.5 |
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| 126 | * |
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| 127 | * Create context and specify size of ancillary buffers. |
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| 128 | */ |
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| 129 | GLAPI OSMesaContext GLAPIENTRY |
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| 130 | OSMesaCreateContextExt( GLenum format, GLint depthBits, GLint stencilBits, |
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| 131 | GLint accumBits, OSMesaContext sharelist ) |
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| 132 | { |
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| 133 | OSMesaContext osmesa; |
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| 134 | GLint rshift, gshift, bshift, ashift; |
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| 135 | GLint rind, gind, bind, aind; |
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| 136 | GLint indexBits = 0, redBits = 0, greenBits = 0, blueBits = 0, alphaBits =0; |
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| 137 | GLboolean rgbmode; |
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| 138 | const GLuint i4 = 1; |
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| 139 | const GLubyte *i1 = (GLubyte *) &i4; |
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| 140 | const GLint little_endian = *i1; |
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| 141 | |||
| 142 | rind = gind = bind = aind = 0; |
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| 143 | if (format==OSMESA_COLOR_INDEX) { |
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| 144 | indexBits = 8; |
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| 145 | rshift = gshift = bshift = ashift = 0; |
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| 146 | rgbmode = GL_FALSE; |
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| 147 | } |
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| 148 | else if (format==OSMESA_RGBA) { |
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| 149 | indexBits = 0; |
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| 150 | redBits = CHAN_BITS; |
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| 151 | greenBits = CHAN_BITS; |
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| 152 | blueBits = CHAN_BITS; |
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| 153 | alphaBits = CHAN_BITS; |
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| 154 | rind = 0; |
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| 155 | gind = 1; |
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| 156 | bind = 2; |
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| 157 | aind = 3; |
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| 158 | if (little_endian) { |
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| 159 | rshift = 0; |
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| 160 | gshift = 8; |
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| 161 | bshift = 16; |
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| 162 | ashift = 24; |
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| 163 | } |
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| 164 | else { |
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| 165 | rshift = 24; |
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| 166 | gshift = 16; |
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| 167 | bshift = 8; |
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| 168 | ashift = 0; |
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| 169 | } |
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| 170 | rgbmode = GL_TRUE; |
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| 171 | } |
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| 172 | else if (format==OSMESA_BGRA) { |
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| 173 | indexBits = 0; |
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| 174 | redBits = CHAN_BITS; |
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| 175 | greenBits = CHAN_BITS; |
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| 176 | blueBits = CHAN_BITS; |
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| 177 | alphaBits = CHAN_BITS; |
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| 178 | bind = 0; |
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| 179 | gind = 1; |
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| 180 | rind = 2; |
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| 181 | aind = 3; |
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| 182 | if (little_endian) { |
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| 183 | bshift = 0; |
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| 184 | gshift = 8; |
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| 185 | rshift = 16; |
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| 186 | ashift = 24; |
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| 187 | } |
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| 188 | else { |
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| 189 | bshift = 24; |
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| 190 | gshift = 16; |
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| 191 | rshift = 8; |
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| 192 | ashift = 0; |
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| 193 | } |
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| 194 | rgbmode = GL_TRUE; |
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| 195 | } |
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| 196 | else if (format==OSMESA_ARGB) { |
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| 197 | indexBits = 0; |
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| 198 | redBits = CHAN_BITS; |
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| 199 | greenBits = CHAN_BITS; |
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| 200 | blueBits = CHAN_BITS; |
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| 201 | alphaBits = CHAN_BITS; |
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| 202 | aind = 0; |
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| 203 | rind = 1; |
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| 204 | gind = 2; |
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| 205 | bind = 3; |
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| 206 | if (little_endian) { |
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| 207 | ashift = 0; |
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| 208 | rshift = 8; |
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| 209 | gshift = 16; |
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| 210 | bshift = 24; |
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| 211 | } |
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| 212 | else { |
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| 213 | ashift = 24; |
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| 214 | rshift = 16; |
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| 215 | gshift = 8; |
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| 216 | bshift = 0; |
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| 217 | } |
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| 218 | rgbmode = GL_TRUE; |
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| 219 | } |
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| 220 | else if (format==OSMESA_RGB) { |
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| 221 | indexBits = 0; |
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| 222 | redBits = CHAN_BITS; |
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| 223 | greenBits = CHAN_BITS; |
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| 224 | blueBits = CHAN_BITS; |
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| 225 | alphaBits = 0; |
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| 226 | bshift = 0; |
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| 227 | gshift = 8; |
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| 228 | rshift = 16; |
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| 229 | ashift = 24; |
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| 230 | rind = 0; |
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| 231 | gind = 1; |
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| 232 | bind = 2; |
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| 233 | rgbmode = GL_TRUE; |
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| 234 | } |
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| 235 | else if (format==OSMESA_BGR) { |
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| 236 | indexBits = 0; |
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| 237 | redBits = CHAN_BITS; |
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| 238 | greenBits = CHAN_BITS; |
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| 239 | blueBits = CHAN_BITS; |
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| 240 | alphaBits = 0; |
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| 241 | bshift = 0; |
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| 242 | gshift = 8; |
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| 243 | rshift = 16; |
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| 244 | ashift = 24; |
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| 245 | rind = 2; |
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| 246 | gind = 1; |
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| 247 | bind = 0; |
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| 248 | rgbmode = GL_TRUE; |
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| 249 | } |
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| 250 | else if (format==OSMESA_RGB_565) { |
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| 251 | indexBits = 0; |
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| 252 | redBits = 5; |
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| 253 | greenBits = 6; |
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| 254 | blueBits = 5; |
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| 255 | alphaBits = 0; |
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| 256 | rshift = 11; |
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| 257 | gshift = 5; |
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| 258 | bshift = 0; |
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| 259 | ashift = 0; |
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| 260 | rind = 0; /* not used */ |
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| 261 | gind = 0; |
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| 262 | bind = 0; |
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| 263 | rgbmode = GL_TRUE; |
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| 264 | } |
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| 265 | else { |
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| 266 | return NULL; |
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| 267 | } |
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| 268 | |||
| 269 | |||
| 270 | osmesa = (OSMesaContext) CALLOC_STRUCT(osmesa_context); |
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| 271 | if (osmesa) { |
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| 272 | osmesa->gl_visual = _mesa_create_visual( rgbmode, |
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| 273 | GL_FALSE, /* double buffer */ |
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| 274 | GL_FALSE, /* stereo */ |
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| 275 | redBits, |
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| 276 | greenBits, |
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| 277 | blueBits, |
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| 278 | alphaBits, |
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| 279 | indexBits, |
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| 280 | depthBits, |
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| 281 | stencilBits, |
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| 282 | accumBits, |
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| 283 | accumBits, |
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| 284 | accumBits, |
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| 285 | alphaBits ? accumBits : 0, |
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| 286 | 1 /* num samples */ |
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| 287 | ); |
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| 288 | if (!osmesa->gl_visual) { |
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| 289 | FREE(osmesa); |
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| 290 | return NULL; |
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| 291 | } |
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| 292 | |||
| 293 | if (!_mesa_initialize_context(&osmesa->gl_ctx, |
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| 294 | osmesa->gl_visual, |
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| 295 | sharelist ? &sharelist->gl_ctx |
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| 296 | : (GLcontext *) NULL, |
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| 297 | (void *) osmesa, |
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| 298 | GL_FALSE)) { |
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| 299 | _mesa_destroy_visual( osmesa->gl_visual ); |
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| 300 | FREE(osmesa); |
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| 301 | return NULL; |
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| 302 | } |
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| 303 | |||
| 304 | _mesa_enable_sw_extensions(&(osmesa->gl_ctx)); |
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| 305 | _mesa_enable_1_3_extensions(&(osmesa->gl_ctx)); |
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| 306 | _mesa_enable_1_4_extensions(&(osmesa->gl_ctx)); |
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| 307 | |||
| 308 | osmesa->gl_buffer = _mesa_create_framebuffer( osmesa->gl_visual, |
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| 309 | (GLboolean) ( osmesa->gl_visual->depthBits > 0 ), |
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| 310 | (GLboolean) ( osmesa->gl_visual->stencilBits > 0 ), |
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| 311 | (GLboolean) ( osmesa->gl_visual->accumRedBits > 0 ), |
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| 312 | GL_FALSE /* s/w alpha */ ); |
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| 313 | |||
| 314 | if (!osmesa->gl_buffer) { |
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| 315 | _mesa_destroy_visual( osmesa->gl_visual ); |
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| 316 | _mesa_free_context_data( &osmesa->gl_ctx ); |
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| 317 | FREE(osmesa); |
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| 318 | return NULL; |
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| 319 | } |
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| 320 | osmesa->format = format; |
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| 321 | osmesa->buffer = NULL; |
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| 322 | osmesa->width = 0; |
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| 323 | osmesa->height = 0; |
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| 324 | osmesa->userRowLength = 0; |
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| 325 | osmesa->rowlength = 0; |
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| 326 | osmesa->yup = GL_TRUE; |
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| 327 | osmesa->rshift = rshift; |
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| 328 | osmesa->gshift = gshift; |
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| 329 | osmesa->bshift = bshift; |
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| 330 | osmesa->ashift = ashift; |
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| 331 | osmesa->rInd = rind; |
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| 332 | osmesa->gInd = gind; |
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| 333 | osmesa->bInd = bind; |
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| 334 | osmesa->aInd = aind; |
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| 335 | |||
| 336 | |||
| 337 | /* Initialize the software rasterizer and helper modules. |
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| 338 | */ |
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| 339 | { |
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| 340 | GLcontext *ctx = &osmesa->gl_ctx; |
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| 341 | |||
| 342 | _swrast_CreateContext( ctx ); |
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| 343 | _ac_CreateContext( ctx ); |
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| 344 | _tnl_CreateContext( ctx ); |
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| 345 | _swsetup_CreateContext( ctx ); |
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| 346 | |||
| 347 | _swsetup_Wakeup( ctx ); |
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| 348 | osmesa_register_swrast_functions( ctx ); |
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| 349 | } |
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| 350 | } |
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| 351 | return osmesa; |
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| 352 | } |
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| 353 | |||
| 354 | |||
| 355 | |||
| 356 | |||
| 357 | /* |
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| 358 | * Destroy an Off-Screen Mesa rendering context. |
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| 359 | * |
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| 360 | * Input: ctx - the context to destroy |
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| 361 | */ |
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| 362 | GLAPI void GLAPIENTRY OSMesaDestroyContext( OSMesaContext ctx ) |
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| 363 | { |
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| 364 | if (ctx) { |
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| 365 | _swsetup_DestroyContext( &ctx->gl_ctx ); |
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| 366 | _tnl_DestroyContext( &ctx->gl_ctx ); |
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| 367 | _ac_DestroyContext( &ctx->gl_ctx ); |
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| 368 | _swrast_DestroyContext( &ctx->gl_ctx ); |
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| 369 | |||
| 370 | _mesa_destroy_visual( ctx->gl_visual ); |
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| 371 | _mesa_destroy_framebuffer( ctx->gl_buffer ); |
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| 372 | _mesa_free_context_data( &ctx->gl_ctx ); |
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| 373 | FREE( ctx ); |
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| 374 | } |
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| 375 | } |
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| 376 | |||
| 377 | |||
| 378 | |||
| 379 | /* |
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| 380 | * Recompute the values of the context's rowaddr array. |
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| 381 | */ |
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| 382 | static void compute_row_addresses( OSMesaContext ctx ) |
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| 383 | { |
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| 384 | GLint bytesPerPixel, bytesPerRow, i; |
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| 385 | GLubyte *origin = (GLubyte *) ctx->buffer; |
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| 386 | |||
| 387 | if (ctx->format == OSMESA_COLOR_INDEX) { |
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| 388 | /* CI mode */ |
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| 389 | bytesPerPixel = 1 * sizeof(GLchan); |
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| 390 | } |
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| 391 | else if ((ctx->format == OSMESA_RGB) || (ctx->format == OSMESA_BGR)) { |
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| 392 | /* RGB mode */ |
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| 393 | bytesPerPixel = 3 * sizeof(GLchan); |
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| 394 | } |
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| 395 | else if (ctx->format == OSMESA_RGB_565) { |
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| 396 | /* 5/6/5 RGB pixel in 16 bits */ |
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| 397 | bytesPerPixel = 2; |
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| 398 | } |
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| 399 | else { |
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| 400 | /* RGBA mode */ |
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| 401 | bytesPerPixel = 4 * sizeof(GLchan); |
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| 402 | } |
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| 403 | |||
| 404 | bytesPerRow = ctx->rowlength * bytesPerPixel; |
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| 405 | |||
| 406 | if (ctx->yup) { |
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| 407 | /* Y=0 is bottom line of window */ |
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| 408 | for (i = 0; i < MAX_HEIGHT; i++) { |
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| 409 | ctx->rowaddr[i] = (GLchan *) ((GLubyte *) origin + i * bytesPerRow); |
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| 410 | } |
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| 411 | } |
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| 412 | else { |
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| 413 | /* Y=0 is top line of window */ |
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| 414 | for (i = 0; i < MAX_HEIGHT; i++) { |
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| 415 | GLint j = ctx->height - i - 1; |
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| 416 | ctx->rowaddr[i] = (GLchan *) ((GLubyte *) origin + j * bytesPerRow); |
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| 417 | } |
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| 418 | } |
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| 419 | } |
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| 420 | |||
| 421 | |||
| 422 | /* |
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| 423 | * Bind an OSMesaContext to an image buffer. The image buffer is just a |
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| 424 | * block of memory which the client provides. Its size must be at least |
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| 425 | * as large as width*height*sizeof(type). Its address should be a multiple |
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| 426 | * of 4 if using RGBA mode. |
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| 427 | * |
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| 428 | * Image data is stored in the order of glDrawPixels: row-major order |
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| 429 | * with the lower-left image pixel stored in the first array position |
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| 430 | * (ie. bottom-to-top). |
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| 431 | * |
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| 432 | * If the context's viewport hasn't been initialized yet, it will now be |
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| 433 | * initialized to (0,0,width,height). |
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| 434 | * |
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| 435 | * Input: ctx - the rendering context |
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| 436 | * buffer - the image buffer memory |
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| 437 | * type - data type for pixel components |
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| 438 | * Normally, only GL_UNSIGNED_BYTE and GL_UNSIGNED_SHORT_5_6_5 |
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| 439 | * are supported. But if Mesa's been compiled with CHAN_BITS==16 |
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| 440 | * then type must be GL_UNSIGNED_SHORT. And if Mesa's been build |
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| 441 | * with CHAN_BITS==32 then type must be GL_FLOAT. |
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| 442 | * width, height - size of image buffer in pixels, at least 1 |
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| 443 | * Return: GL_TRUE if success, GL_FALSE if error because of invalid ctx, |
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| 444 | * invalid buffer address, invalid type, width<1, height<1, |
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| 445 | * width>internal limit or height>internal limit. |
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| 446 | */ |
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| 447 | GLAPI GLboolean GLAPIENTRY |
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| 448 | OSMesaMakeCurrent( OSMesaContext ctx, void *buffer, GLenum type, |
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| 449 | GLsizei width, GLsizei height ) |
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| 450 | { |
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| 451 | if (!ctx || !buffer || |
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| 452 | width < 1 || height < 1 || |
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| 453 | width > MAX_WIDTH || height > MAX_HEIGHT) { |
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| 454 | return GL_FALSE; |
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| 455 | } |
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| 456 | |||
| 457 | if (ctx->format == OSMESA_RGB_565) { |
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| 458 | if (type != GL_UNSIGNED_SHORT_5_6_5) |
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| 459 | return GL_FALSE; |
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| 460 | } |
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| 461 | else if (type != CHAN_TYPE) { |
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| 462 | return GL_FALSE; |
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| 463 | } |
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| 464 | |||
| 465 | osmesa_update_state( &ctx->gl_ctx, 0 ); |
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| 466 | _mesa_make_current( &ctx->gl_ctx, ctx->gl_buffer ); |
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| 467 | |||
| 468 | ctx->buffer = buffer; |
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| 469 | ctx->width = width; |
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| 470 | ctx->height = height; |
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| 471 | if (ctx->userRowLength) |
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| 472 | ctx->rowlength = ctx->userRowLength; |
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| 473 | else |
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| 474 | ctx->rowlength = width; |
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| 475 | |||
| 476 | compute_row_addresses( ctx ); |
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| 477 | |||
| 478 | /* init viewport */ |
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| 479 | if (ctx->gl_ctx.Viewport.Width == 0) { |
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| 480 | /* initialize viewport and scissor box to buffer size */ |
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| 481 | _mesa_Viewport( 0, 0, width, height ); |
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| 482 | ctx->gl_ctx.Scissor.Width = width; |
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| 483 | ctx->gl_ctx.Scissor.Height = height; |
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| 484 | } |
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| 485 | else { |
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| 486 | /* this will make ensure we recognize the new buffer size */ |
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| 487 | _mesa_ResizeBuffersMESA(); |
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| 488 | } |
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| 489 | |||
| 490 | /* Added by Gerk Huisma: */ |
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| 491 | _tnl_MakeCurrent( &ctx->gl_ctx, ctx->gl_ctx.DrawBuffer, |
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| 492 | ctx->gl_ctx.ReadBuffer ); |
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| 493 | |||
| 494 | return GL_TRUE; |
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| 495 | } |
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| 496 | |||
| 497 | |||
| 498 | |||
| 499 | GLAPI OSMesaContext GLAPIENTRY OSMesaGetCurrentContext( void ) |
||
| 500 | { |
||
| 501 | GLcontext *ctx = _mesa_get_current_context(); |
||
| 502 | if (ctx) |
||
| 503 | return (OSMesaContext) ctx; |
||
| 504 | else |
||
| 505 | return NULL; |
||
| 506 | } |
||
| 507 | |||
| 508 | |||
| 509 | |||
| 510 | GLAPI void GLAPIENTRY OSMesaPixelStore( GLint pname, GLint value ) |
||
| 511 | { |
||
| 512 | OSMesaContext ctx = OSMesaGetCurrentContext(); |
||
| 513 | |||
| 514 | switch (pname) { |
||
| 515 | case OSMESA_ROW_LENGTH: |
||
| 516 | if (value<0) { |
||
| 517 | _mesa_error( &ctx->gl_ctx, GL_INVALID_VALUE, |
||
| 518 | "OSMesaPixelStore(value)" ); |
||
| 519 | return; |
||
| 520 | } |
||
| 521 | ctx->userRowLength = value; |
||
| 522 | ctx->rowlength = value; |
||
| 523 | break; |
||
| 524 | case OSMESA_Y_UP: |
||
| 525 | ctx->yup = value ? GL_TRUE : GL_FALSE; |
||
| 526 | break; |
||
| 527 | default: |
||
| 528 | _mesa_error( &ctx->gl_ctx, GL_INVALID_ENUM, "OSMesaPixelStore(pname)" ); |
||
| 529 | return; |
||
| 530 | } |
||
| 531 | |||
| 532 | compute_row_addresses( ctx ); |
||
| 533 | } |
||
| 534 | |||
| 535 | |||
| 536 | GLAPI void GLAPIENTRY OSMesaGetIntegerv( GLint pname, GLint *value ) |
||
| 537 | { |
||
| 538 | OSMesaContext ctx = OSMesaGetCurrentContext(); |
||
| 539 | |||
| 540 | switch (pname) { |
||
| 541 | case OSMESA_WIDTH: |
||
| 542 | *value = ctx->width; |
||
| 543 | return; |
||
| 544 | case OSMESA_HEIGHT: |
||
| 545 | *value = ctx->height; |
||
| 546 | return; |
||
| 547 | case OSMESA_FORMAT: |
||
| 548 | *value = ctx->format; |
||
| 549 | return; |
||
| 550 | case OSMESA_TYPE: |
||
| 551 | *value = CHAN_TYPE; |
||
| 552 | return; |
||
| 553 | case OSMESA_ROW_LENGTH: |
||
| 554 | *value = ctx->rowlength; |
||
| 555 | return; |
||
| 556 | case OSMESA_Y_UP: |
||
| 557 | *value = ctx->yup; |
||
| 558 | return; |
||
| 559 | case OSMESA_MAX_WIDTH: |
||
| 560 | *value = MAX_WIDTH; |
||
| 561 | return; |
||
| 562 | case OSMESA_MAX_HEIGHT: |
||
| 563 | *value = MAX_HEIGHT; |
||
| 564 | return; |
||
| 565 | default: |
||
| 566 | _mesa_error(&ctx->gl_ctx, GL_INVALID_ENUM, "OSMesaGetIntergerv(pname)"); |
||
| 567 | return; |
||
| 568 | } |
||
| 569 | } |
||
| 570 | |||
| 571 | /* |
||
| 572 | * Return the depth buffer associated with an OSMesa context. |
||
| 573 | * Input: c - the OSMesa context |
||
| 574 | * Output: width, height - size of buffer in pixels |
||
| 575 | * bytesPerValue - bytes per depth value (2 or 4) |
||
| 576 | * buffer - pointer to depth buffer values |
||
| 577 | * Return: GL_TRUE or GL_FALSE to indicate success or failure. |
||
| 578 | */ |
||
| 579 | GLAPI GLboolean GLAPIENTRY |
||
| 580 | OSMesaGetDepthBuffer( OSMesaContext c, GLint *width, GLint *height, |
||
| 581 | GLint *bytesPerValue, void **buffer ) |
||
| 582 | { |
||
| 583 | if ((!c->gl_buffer) || (!c->gl_buffer->DepthBuffer)) { |
||
| 584 | *width = 0; |
||
| 585 | *height = 0; |
||
| 586 | *bytesPerValue = 0; |
||
| 587 | *buffer = 0; |
||
| 588 | return GL_FALSE; |
||
| 589 | } |
||
| 590 | else { |
||
| 591 | *width = c->gl_buffer->Width; |
||
| 592 | *height = c->gl_buffer->Height; |
||
| 593 | if (c->gl_visual->depthBits <= 16) |
||
| 594 | *bytesPerValue = sizeof(GLushort); |
||
| 595 | else |
||
| 596 | *bytesPerValue = sizeof(GLuint); |
||
| 597 | *buffer = c->gl_buffer->DepthBuffer; |
||
| 598 | return GL_TRUE; |
||
| 599 | } |
||
| 600 | } |
||
| 601 | |||
| 602 | /* |
||
| 603 | * Return the color buffer associated with an OSMesa context. |
||
| 604 | * Input: c - the OSMesa context |
||
| 605 | * Output: width, height - size of buffer in pixels |
||
| 606 | * format - the pixel format (OSMESA_FORMAT) |
||
| 607 | * buffer - pointer to color buffer values |
||
| 608 | * Return: GL_TRUE or GL_FALSE to indicate success or failure. |
||
| 609 | */ |
||
| 610 | GLAPI GLboolean GLAPIENTRY |
||
| 611 | OSMesaGetColorBuffer( OSMesaContext c, GLint *width, |
||
| 612 | GLint *height, GLint *format, void **buffer ) |
||
| 613 | { |
||
| 614 | if (!c->buffer) { |
||
| 615 | *width = 0; |
||
| 616 | *height = 0; |
||
| 617 | *format = 0; |
||
| 618 | *buffer = 0; |
||
| 619 | return GL_FALSE; |
||
| 620 | } |
||
| 621 | else { |
||
| 622 | *width = c->width; |
||
| 623 | *height = c->height; |
||
| 624 | *format = c->format; |
||
| 625 | *buffer = c->buffer; |
||
| 626 | return GL_TRUE; |
||
| 627 | } |
||
| 628 | } |
||
| 629 | |||
| 630 | |||
| 631 | |||
| 632 | struct name_address { |
||
| 633 | const char *Name; |
||
| 634 | GLvoid *Address; |
||
| 635 | }; |
||
| 636 | |||
| 637 | static struct name_address functions[] = { |
||
| 638 | { "OSMesaCreateContext", (void *) OSMesaCreateContext }, |
||
| 639 | { "OSMesaCreateContextExt", (void *) OSMesaCreateContextExt }, |
||
| 640 | { "OSMesaDestroyContext", (void *) OSMesaDestroyContext }, |
||
| 641 | { "OSMesaMakeCurrent", (void *) OSMesaMakeCurrent }, |
||
| 642 | { "OSMesaGetCurrentContext", (void *) OSMesaGetCurrentContext }, |
||
| 643 | { "OSMesaPixelsStore", (void *) OSMesaPixelStore }, |
||
| 644 | { "OSMesaGetIntegerv", (void *) OSMesaGetIntegerv }, |
||
| 645 | { "OSMesaGetDepthBuffer", (void *) OSMesaGetDepthBuffer }, |
||
| 646 | { "OSMesaGetColorBuffer", (void *) OSMesaGetColorBuffer }, |
||
| 647 | { "OSMesaGetProcAddress", (void *) OSMesaGetProcAddress }, |
||
| 648 | { NULL, NULL } |
||
| 649 | }; |
||
| 650 | |||
| 651 | GLAPI void * GLAPIENTRY |
||
| 652 | OSMesaGetProcAddress( const char *funcName ) |
||
| 653 | { |
||
| 654 | int i; |
||
| 655 | for (i = 0; functions[i].Name; i++) { |
||
| 656 | if (_mesa_strcmp(functions[i].Name, funcName) == 0) |
||
| 657 | return (void *) functions[i].Address; |
||
| 658 | } |
||
| 659 | return (void *) _glapi_get_proc_address(funcName); |
||
| 660 | } |
||
| 661 | |||
| 662 | |||
| 663 | /**********************************************************************/ |
||
| 664 | /*** Device Driver Functions ***/ |
||
| 665 | /**********************************************************************/ |
||
| 666 | |||
| 667 | |||
| 668 | /* |
||
| 669 | * Useful macros: |
||
| 670 | */ |
||
| 671 | |||
| 672 | #if CHAN_TYPE == GL_FLOAT |
||
| 673 | #define PACK_RGBA(DST, R, G, B, A) \ |
||
| 674 | do { \ |
||
| 675 | (DST)[0] = MAX2( R, 0.0F ); \ |
||
| 676 | (DST)[1] = MAX2( G, 0.0F ); \ |
||
| 677 | (DST)[2] = MAX2( B, 0.0F ); \ |
||
| 678 | (DST)[3] = CLAMP(A, 0.0F, CHAN_MAXF);\ |
||
| 679 | } while (0) |
||
| 680 | #else |
||
| 681 | #define PACK_RGBA(DST, R, G, B, A) \ |
||
| 682 | do { \ |
||
| 683 | (DST)[osmesa->rInd] = R; \ |
||
| 684 | (DST)[osmesa->gInd] = G; \ |
||
| 685 | (DST)[osmesa->bInd] = B; \ |
||
| 686 | (DST)[osmesa->aInd] = A; \ |
||
| 687 | } while (0) |
||
| 688 | #endif |
||
| 689 | |||
| 690 | #define PACK_RGB(DST, R, G, B) \ |
||
| 691 | do { \ |
||
| 692 | (DST)[0] = R; \ |
||
| 693 | (DST)[1] = G; \ |
||
| 694 | (DST)[2] = B; \ |
||
| 695 | } while (0) |
||
| 696 | |||
| 697 | #define PACK_BGR(DST, R, G, B) \ |
||
| 698 | do { \ |
||
| 699 | (DST)[0] = B; \ |
||
| 700 | (DST)[1] = G; \ |
||
| 701 | (DST)[2] = R; \ |
||
| 702 | } while (0) |
||
| 703 | |||
| 704 | #define PACK_RGB_565(DST, R, G, B) \ |
||
| 705 | do { \ |
||
| 706 | (DST) = (((int) (R) << 8) & 0xf800) | (((int) (G) << 3) & 0x7e0) | ((int) (B) >> 3);\ |
||
| 707 | } while (0) |
||
| 708 | |||
| 709 | |||
| 710 | #define UNPACK_RED(P) ( (P)[osmesa->rInd] ) |
||
| 711 | #define UNPACK_GREEN(P) ( (P)[osmesa->gInd] ) |
||
| 712 | #define UNPACK_BLUE(P) ( (P)[osmesa->bInd] ) |
||
| 713 | #define UNPACK_ALPHA(P) ( (P)[osmesa->aInd] ) |
||
| 714 | |||
| 715 | |||
| 716 | #define PIXELADDR1(X,Y) (osmesa->rowaddr[Y] + (X)) |
||
| 717 | #define PIXELADDR2(X,Y) (osmesa->rowaddr[Y] + 2 * (X)) |
||
| 718 | #define PIXELADDR3(X,Y) (osmesa->rowaddr[Y] + 3 * (X)) |
||
| 719 | #define PIXELADDR4(X,Y) (osmesa->rowaddr[Y] + 4 * (X)) |
||
| 720 | |||
| 721 | |||
| 722 | |||
| 723 | static void set_buffer( GLcontext *ctx, GLframebuffer *buffer, GLuint bufferBit ) |
||
| 724 | { |
||
| 725 | /* separate read buffer not supported */ |
||
| 726 | ASSERT(buffer == ctx->DrawBuffer); |
||
| 727 | ASSERT(bufferBit == FRONT_LEFT_BIT); |
||
| 728 | } |
||
| 729 | |||
| 730 | |||
| 731 | static void mesa_clear( GLcontext *ctx, GLbitfield mask, GLboolean all, |
||
| 732 | GLint x, GLint y, GLint width, GLint height ) |
||
| 733 | { |
||
| 734 | OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 735 | const GLuint *colorMask = (GLuint *) &ctx->Color.ColorMask; |
||
| 736 | |||
| 737 | /* sanity check - we only have a front-left buffer */ |
||
| 738 | ASSERT((mask & (DD_FRONT_RIGHT_BIT | DD_BACK_LEFT_BIT | DD_BACK_RIGHT_BIT)) == 0); |
||
| 739 | if (*colorMask == 0xffffffff && ctx->Color.IndexMask == 0xffffffff) { |
||
| 740 | if (mask & DD_FRONT_LEFT_BIT) { |
||
| 741 | if (osmesa->format == OSMESA_COLOR_INDEX) { |
||
| 742 | if (all) { |
||
| 743 | /* Clear whole CI buffer */ |
||
| 744 | #if CHAN_TYPE == GL_UNSIGNED_BYTE |
||
| 745 | MEMSET(osmesa->buffer, ctx->Color.ClearIndex, |
||
| 746 | osmesa->rowlength * osmesa->height); |
||
| 747 | #else |
||
| 748 | const GLint n = osmesa->rowlength * osmesa->height; |
||
| 749 | GLchan *buffer = (GLchan *) osmesa->buffer; |
||
| 750 | GLint i; |
||
| 751 | for (i = 0; i < n; i ++) { |
||
| 752 | buffer[i] = ctx->Color.ClearIndex; |
||
| 753 | } |
||
| 754 | #endif |
||
| 755 | } |
||
| 756 | else { |
||
| 757 | /* Clear part of CI buffer */ |
||
| 758 | const GLchan clearIndex = (GLchan) ctx->Color.ClearIndex; |
||
| 759 | GLint i, j; |
||
| 760 | for (i = 0; i < height; i++) { |
||
| 761 | GLchan *ptr1 = PIXELADDR1(x, (y + i)); |
||
| 762 | for (j = 0; j < width; j++) { |
||
| 763 | *ptr1++ = clearIndex; |
||
| 764 | } |
||
| 765 | } |
||
| 766 | } |
||
| 767 | } |
||
| 768 | else if (osmesa->format == OSMESA_RGB) { |
||
| 769 | GLchan r, g, b; |
||
| 770 | CLAMPED_FLOAT_TO_CHAN(r, ctx->Color.ClearColor[0]); |
||
| 771 | CLAMPED_FLOAT_TO_CHAN(g, ctx->Color.ClearColor[1]); |
||
| 772 | CLAMPED_FLOAT_TO_CHAN(b, ctx->Color.ClearColor[2]); |
||
| 773 | if (all) { |
||
| 774 | /* Clear whole RGB buffer */ |
||
| 775 | GLuint n = osmesa->rowlength * osmesa->height; |
||
| 776 | GLchan *ptr3 = (GLchan *) osmesa->buffer; |
||
| 777 | GLuint i; |
||
| 778 | for (i = 0; i < n; i++) { |
||
| 779 | PACK_RGB(ptr3, r, g, b); |
||
| 780 | ptr3 += 3; |
||
| 781 | } |
||
| 782 | } |
||
| 783 | else { |
||
| 784 | /* Clear part of RGB buffer */ |
||
| 785 | GLint i, j; |
||
| 786 | for (i = 0; i < height; i++) { |
||
| 787 | GLchan *ptr3 = PIXELADDR3(x, (y + i)); |
||
| 788 | for (j = 0; j < width; j++) { |
||
| 789 | PACK_RGB(ptr3, r, g, b); |
||
| 790 | ptr3 += 3; |
||
| 791 | } |
||
| 792 | } |
||
| 793 | } |
||
| 794 | } |
||
| 795 | else if (osmesa->format == OSMESA_BGR) { |
||
| 796 | GLchan r, g, b; |
||
| 797 | CLAMPED_FLOAT_TO_CHAN(r, ctx->Color.ClearColor[0]); |
||
| 798 | CLAMPED_FLOAT_TO_CHAN(g, ctx->Color.ClearColor[1]); |
||
| 799 | CLAMPED_FLOAT_TO_CHAN(b, ctx->Color.ClearColor[2]); |
||
| 800 | if (all) { |
||
| 801 | /* Clear whole RGB buffer */ |
||
| 802 | const GLint n = osmesa->rowlength * osmesa->height; |
||
| 803 | GLchan *ptr3 = (GLchan *) osmesa->buffer; |
||
| 804 | GLint i; |
||
| 805 | for (i = 0; i < n; i++) { |
||
| 806 | PACK_BGR(ptr3, r, g, b); |
||
| 807 | ptr3 += 3; |
||
| 808 | } |
||
| 809 | } |
||
| 810 | else { |
||
| 811 | /* Clear part of RGB buffer */ |
||
| 812 | GLint i, j; |
||
| 813 | for (i = 0; i < height; i++) { |
||
| 814 | GLchan *ptr3 = PIXELADDR3(x, (y + i)); |
||
| 815 | for (j = 0; j < width; j++) { |
||
| 816 | PACK_BGR(ptr3, r, g, b); |
||
| 817 | ptr3 += 3; |
||
| 818 | } |
||
| 819 | } |
||
| 820 | } |
||
| 821 | } |
||
| 822 | else if (osmesa->format == OSMESA_RGB_565) { |
||
| 823 | GLushort clearPixel; |
||
| 824 | GLchan r, g, b; |
||
| 825 | CLAMPED_FLOAT_TO_CHAN(r, ctx->Color.ClearColor[0]); |
||
| 826 | CLAMPED_FLOAT_TO_CHAN(g, ctx->Color.ClearColor[1]); |
||
| 827 | CLAMPED_FLOAT_TO_CHAN(b, ctx->Color.ClearColor[2]); |
||
| 828 | PACK_RGB_565(clearPixel, r, g, b); |
||
| 829 | if (all) { |
||
| 830 | /* Clear whole RGB buffer */ |
||
| 831 | const GLuint n = osmesa->rowlength * osmesa->height; |
||
| 832 | GLushort *ptr2 = (GLushort *) osmesa->buffer; |
||
| 833 | GLuint i; |
||
| 834 | for (i = 0; i < n; i++) { |
||
| 835 | *ptr2 = clearPixel; |
||
| 836 | ptr2++; |
||
| 837 | } |
||
| 838 | } |
||
| 839 | else { |
||
| 840 | /* clear scissored region */ |
||
| 841 | GLint i, j; |
||
| 842 | for (i = 0; i < height; i++) { |
||
| 843 | GLushort *ptr2 = (GLushort *) PIXELADDR2(x, (y + i)); |
||
| 844 | for (j = 0; j < width; j++) { |
||
| 845 | *ptr2 = clearPixel; |
||
| 846 | ptr2++; |
||
| 847 | } |
||
| 848 | } |
||
| 849 | } |
||
| 850 | } |
||
| 851 | else { |
||
| 852 | #if CHAN_TYPE == GL_UNSIGNED_BYTE |
||
| 853 | /* 4-byte pixel value */ |
||
| 854 | GLuint clearPixel; |
||
| 855 | GLchan *clr = (GLchan *) &clearPixel; |
||
| 856 | CLAMPED_FLOAT_TO_CHAN(clr[osmesa->rInd], ctx->Color.ClearColor[0]); |
||
| 857 | CLAMPED_FLOAT_TO_CHAN(clr[osmesa->gInd], ctx->Color.ClearColor[1]); |
||
| 858 | CLAMPED_FLOAT_TO_CHAN(clr[osmesa->bInd], ctx->Color.ClearColor[2]); |
||
| 859 | CLAMPED_FLOAT_TO_CHAN(clr[osmesa->aInd], ctx->Color.ClearColor[3]); |
||
| 860 | if (all) { |
||
| 861 | /* Clear whole RGBA buffer */ |
||
| 862 | const GLuint n = osmesa->rowlength * osmesa->height; |
||
| 863 | GLuint *ptr4 = (GLuint *) osmesa->buffer; |
||
| 864 | GLuint i; |
||
| 865 | if (clearPixel) { |
||
| 866 | for (i = 0; i < n; i++) { |
||
| 867 | *ptr4++ = clearPixel; |
||
| 868 | } |
||
| 869 | } |
||
| 870 | else { |
||
| 871 | _mesa_bzero(ptr4, n * sizeof(GLuint)); |
||
| 872 | } |
||
| 873 | } |
||
| 874 | else { |
||
| 875 | /* Clear part of RGBA buffer */ |
||
| 876 | GLint i, j; |
||
| 877 | for (i = 0; i < height; i++) { |
||
| 878 | GLuint *ptr4 = (GLuint *) PIXELADDR4(x, (y + i)); |
||
| 879 | for (j = 0; j < width; j++) { |
||
| 880 | *ptr4++ = clearPixel; |
||
| 881 | } |
||
| 882 | } |
||
| 883 | } |
||
| 884 | #else |
||
| 885 | GLchan r, g, b, a; |
||
| 886 | CLAMPED_FLOAT_TO_CHAN(r, ctx->Color.ClearColor[0]); |
||
| 887 | CLAMPED_FLOAT_TO_CHAN(g, ctx->Color.ClearColor[1]); |
||
| 888 | CLAMPED_FLOAT_TO_CHAN(b, ctx->Color.ClearColor[2]); |
||
| 889 | CLAMPED_FLOAT_TO_CHAN(a, ctx->Color.ClearColor[3]); |
||
| 890 | if (all) { |
||
| 891 | /* Clear whole RGBA buffer */ |
||
| 892 | const GLuint n = osmesa->rowlength * osmesa->height; |
||
| 893 | GLchan *p = (GLchan *) osmesa->buffer; |
||
| 894 | GLuint i; |
||
| 895 | for (i = 0; i < n; i++) { |
||
| 896 | PACK_RGBA(p, r, g, b, a); |
||
| 897 | p += 4; |
||
| 898 | } |
||
| 899 | } |
||
| 900 | else { |
||
| 901 | /* Clear part of RGBA buffer */ |
||
| 902 | GLint i, j; |
||
| 903 | for (i = 0; i < height; i++) { |
||
| 904 | GLchan *p = PIXELADDR4(x, (y + i)); |
||
| 905 | for (j = 0; j < width; j++) { |
||
| 906 | PACK_RGBA(p, r, g, b, a); |
||
| 907 | p += 4; |
||
| 908 | } |
||
| 909 | } |
||
| 910 | } |
||
| 911 | |||
| 912 | #endif |
||
| 913 | } |
||
| 914 | mask &= ~DD_FRONT_LEFT_BIT; |
||
| 915 | } |
||
| 916 | } |
||
| 917 | |||
| 918 | if (mask) |
||
| 919 | _swrast_Clear( ctx, mask, all, x, y, width, height ); |
||
| 920 | } |
||
| 921 | |||
| 922 | |||
| 923 | |||
| 924 | static void buffer_size( GLframebuffer *buffer, GLuint *width, GLuint *height ) |
||
| 925 | { |
||
| 926 | /* don't use GET_CURRENT_CONTEXT(ctx) here - it's a problem on Windows */ |
||
| 927 | GLcontext *ctx = (GLcontext *) _glapi_get_context(); |
||
| 928 | (void) buffer; |
||
| 929 | if (ctx) { |
||
| 930 | OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 931 | *width = osmesa->width; |
||
| 932 | *height = osmesa->height; |
||
| 933 | } |
||
| 934 | } |
||
| 935 | |||
| 936 | |||
| 937 | /**********************************************************************/ |
||
| 938 | /***** Read/write spans/arrays of RGBA pixels *****/ |
||
| 939 | /**********************************************************************/ |
||
| 940 | |||
| 941 | /* Write RGBA pixels to an RGBA (or permuted) buffer. */ |
||
| 942 | static void |
||
| 943 | write_rgba_span( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
| 944 | CONST GLchan rgba[][4], const GLubyte mask[] ) |
||
| 945 | { |
||
| 946 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 947 | GLchan *p = PIXELADDR4(x, y); |
||
| 948 | GLuint i; |
||
| 949 | if (mask) { |
||
| 950 | for (i = 0; i < n; i++, p += 4) { |
||
| 951 | if (mask[i]) { |
||
| 952 | PACK_RGBA(p, rgba[i][RCOMP], rgba[i][GCOMP], |
||
| 953 | rgba[i][BCOMP], rgba[i][ACOMP]); |
||
| 954 | } |
||
| 955 | } |
||
| 956 | } |
||
| 957 | else { |
||
| 958 | for (i = 0; i < n; i++, p += 4) { |
||
| 959 | PACK_RGBA(p, rgba[i][RCOMP], rgba[i][GCOMP], |
||
| 960 | rgba[i][BCOMP], rgba[i][ACOMP]); |
||
| 961 | } |
||
| 962 | } |
||
| 963 | } |
||
| 964 | |||
| 965 | |||
| 966 | /* Write RGBA pixels to an RGBA buffer. This is the fastest span-writer. */ |
||
| 967 | static void |
||
| 968 | write_rgba_span_rgba( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
| 969 | CONST GLchan rgba[][4], const GLubyte mask[] ) |
||
| 970 | { |
||
| 971 | OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 972 | GLuint *ptr4 = (GLuint *) PIXELADDR4(x, y); |
||
| 973 | const GLuint *rgba4 = (const GLuint *) rgba; |
||
| 974 | GLuint i; |
||
| 975 | ASSERT(CHAN_TYPE == GL_UNSIGNED_BYTE); |
||
| 976 | if (mask) { |
||
| 977 | for (i = 0; i < n; i++) { |
||
| 978 | if (mask[i]) { |
||
| 979 | ptr4[i] = rgba4[i]; |
||
| 980 | } |
||
| 981 | } |
||
| 982 | } |
||
| 983 | else { |
||
| 984 | MEMCPY( ptr4, rgba4, n * 4 ); |
||
| 985 | } |
||
| 986 | } |
||
| 987 | |||
| 988 | |||
| 989 | /* Write RGB pixels to an RGBA (or permuted) buffer. */ |
||
| 990 | static void |
||
| 991 | write_rgb_span( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
| 992 | CONST GLchan rgb[][3], const GLubyte mask[] ) |
||
| 993 | { |
||
| 994 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 995 | GLchan *p = PIXELADDR4(x, y); |
||
| 996 | GLuint i; |
||
| 997 | if (mask) { |
||
| 998 | for (i = 0; i < n; i++, p+=4) { |
||
| 999 | if (mask[i]) { |
||
| 1000 | PACK_RGBA(p, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP], CHAN_MAX); |
||
| 1001 | } |
||
| 1002 | } |
||
| 1003 | } |
||
| 1004 | else { |
||
| 1005 | for (i = 0; i < n; i++, p+=4) { |
||
| 1006 | PACK_RGBA(p, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP], CHAN_MAX); |
||
| 1007 | } |
||
| 1008 | } |
||
| 1009 | } |
||
| 1010 | |||
| 1011 | |||
| 1012 | |||
| 1013 | static void |
||
| 1014 | write_monocolor_span( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
| 1015 | const GLchan color[4], const GLubyte mask[] ) |
||
| 1016 | { |
||
| 1017 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1018 | GLchan *p = PIXELADDR4(x, y); |
||
| 1019 | GLuint i; |
||
| 1020 | for (i = 0; i < n; i++, p += 4) { |
||
| 1021 | if (mask[i]) { |
||
| 1022 | PACK_RGBA(p, color[RCOMP], color[GCOMP], color[BCOMP], color[ACOMP]); |
||
| 1023 | } |
||
| 1024 | } |
||
| 1025 | } |
||
| 1026 | |||
| 1027 | |||
| 1028 | |||
| 1029 | static void |
||
| 1030 | write_rgba_pixels( const GLcontext *ctx, GLuint n, |
||
| 1031 | const GLint x[], const GLint y[], |
||
| 1032 | CONST GLchan rgba[][4], const GLubyte mask[] ) |
||
| 1033 | { |
||
| 1034 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1035 | GLuint i; |
||
| 1036 | for (i = 0; i < n; i++) { |
||
| 1037 | if (mask[i]) { |
||
| 1038 | GLchan *p = PIXELADDR4(x[i], y[i]); |
||
| 1039 | PACK_RGBA(p, rgba[i][RCOMP], rgba[i][GCOMP], |
||
| 1040 | rgba[i][BCOMP], rgba[i][ACOMP]); |
||
| 1041 | } |
||
| 1042 | } |
||
| 1043 | } |
||
| 1044 | |||
| 1045 | |||
| 1046 | |||
| 1047 | static void |
||
| 1048 | write_monocolor_pixels( const GLcontext *ctx, GLuint n, |
||
| 1049 | const GLint x[], const GLint y[], |
||
| 1050 | const GLchan color[4], const GLubyte mask[] ) |
||
| 1051 | { |
||
| 1052 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1053 | GLuint i; |
||
| 1054 | for (i = 0; i < n; i++) { |
||
| 1055 | if (mask[i]) { |
||
| 1056 | GLchan *p = PIXELADDR4(x[i], y[i]); |
||
| 1057 | PACK_RGBA(p, color[RCOMP], color[GCOMP], color[BCOMP], color[ACOMP]); |
||
| 1058 | } |
||
| 1059 | } |
||
| 1060 | } |
||
| 1061 | |||
| 1062 | |||
| 1063 | static void |
||
| 1064 | read_rgba_span( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
| 1065 | GLchan rgba[][4] ) |
||
| 1066 | { |
||
| 1067 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1068 | GLuint i; |
||
| 1069 | GLchan *p = PIXELADDR4(x, y); |
||
| 1070 | for (i = 0; i < n; i++, p += 4) { |
||
| 1071 | rgba[i][RCOMP] = UNPACK_RED(p); |
||
| 1072 | rgba[i][GCOMP] = UNPACK_GREEN(p); |
||
| 1073 | rgba[i][BCOMP] = UNPACK_BLUE(p); |
||
| 1074 | rgba[i][ACOMP] = UNPACK_ALPHA(p); |
||
| 1075 | } |
||
| 1076 | } |
||
| 1077 | |||
| 1078 | |||
| 1079 | /* Read RGBA pixels from an RGBA buffer */ |
||
| 1080 | static void |
||
| 1081 | read_rgba_span_rgba( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
| 1082 | GLchan rgba[][4] ) |
||
| 1083 | { |
||
| 1084 | OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1085 | GLuint *ptr4 = (GLuint *) PIXELADDR4(x, y); |
||
| 1086 | MEMCPY( rgba, ptr4, n * 4 * sizeof(GLchan) ); |
||
| 1087 | } |
||
| 1088 | |||
| 1089 | |||
| 1090 | static void |
||
| 1091 | read_rgba_pixels( const GLcontext *ctx, |
||
| 1092 | GLuint n, const GLint x[], const GLint y[], |
||
| 1093 | GLchan rgba[][4], const GLubyte mask[] ) |
||
| 1094 | { |
||
| 1095 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1096 | GLuint i; |
||
| 1097 | for (i = 0; i < n; i++) { |
||
| 1098 | if (mask[i]) { |
||
| 1099 | const GLchan *p = PIXELADDR4(x[i], y[i]); |
||
| 1100 | rgba[i][RCOMP] = UNPACK_RED(p); |
||
| 1101 | rgba[i][GCOMP] = UNPACK_GREEN(p); |
||
| 1102 | rgba[i][BCOMP] = UNPACK_BLUE(p); |
||
| 1103 | rgba[i][ACOMP] = UNPACK_ALPHA(p); |
||
| 1104 | } |
||
| 1105 | } |
||
| 1106 | } |
||
| 1107 | |||
| 1108 | /**********************************************************************/ |
||
| 1109 | /***** 3 byte RGB pixel support funcs *****/ |
||
| 1110 | /**********************************************************************/ |
||
| 1111 | |||
| 1112 | /* Write RGBA pixels to an RGB buffer. */ |
||
| 1113 | static void |
||
| 1114 | write_rgba_span_RGB( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
| 1115 | CONST GLchan rgba[][4], const GLubyte mask[] ) |
||
| 1116 | { |
||
| 1117 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1118 | GLchan *p = PIXELADDR3(x, y); |
||
| 1119 | GLuint i; |
||
| 1120 | if (mask) { |
||
| 1121 | for (i = 0; i < n; i++, p += 3) { |
||
| 1122 | if (mask[i]) { |
||
| 1123 | PACK_RGB(p, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]); |
||
| 1124 | } |
||
| 1125 | } |
||
| 1126 | } |
||
| 1127 | else { |
||
| 1128 | for (i = 0; i < n; i++, p += 3) { |
||
| 1129 | PACK_RGB(p, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]); |
||
| 1130 | } |
||
| 1131 | } |
||
| 1132 | } |
||
| 1133 | |||
| 1134 | /* Write RGBA pixels to an BGR buffer. */ |
||
| 1135 | static void |
||
| 1136 | write_rgba_span_BGR( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
| 1137 | CONST GLchan rgba[][4], const GLubyte mask[] ) |
||
| 1138 | { |
||
| 1139 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1140 | GLchan *p = PIXELADDR3(x, y); |
||
| 1141 | GLuint i; |
||
| 1142 | if (mask) { |
||
| 1143 | for (i = 0; i < n; i++, p += 3) { |
||
| 1144 | if (mask[i]) { |
||
| 1145 | PACK_BGR(p, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]); |
||
| 1146 | } |
||
| 1147 | } |
||
| 1148 | } |
||
| 1149 | else { |
||
| 1150 | for (i = 0; i < n; i++, p += 3) { |
||
| 1151 | PACK_BGR(p, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]); |
||
| 1152 | } |
||
| 1153 | } |
||
| 1154 | } |
||
| 1155 | |||
| 1156 | /* Write RGB pixels to an RGB buffer. */ |
||
| 1157 | static void |
||
| 1158 | write_rgb_span_RGB( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
| 1159 | CONST GLchan rgb[][3], const GLubyte mask[] ) |
||
| 1160 | { |
||
| 1161 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1162 | GLchan *p = PIXELADDR3(x, y); |
||
| 1163 | GLuint i; |
||
| 1164 | if (mask) { |
||
| 1165 | for (i = 0; i < n; i++, p += 3) { |
||
| 1166 | if (mask[i]) { |
||
| 1167 | PACK_RGB(p, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]); |
||
| 1168 | } |
||
| 1169 | } |
||
| 1170 | } |
||
| 1171 | else { |
||
| 1172 | for (i = 0; i < n; i++, p += 3) { |
||
| 1173 | PACK_RGB(p, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]); |
||
| 1174 | } |
||
| 1175 | } |
||
| 1176 | } |
||
| 1177 | |||
| 1178 | /* Write RGB pixels to an BGR buffer. */ |
||
| 1179 | static void |
||
| 1180 | write_rgb_span_BGR( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
| 1181 | CONST GLchan rgb[][3], const GLubyte mask[] ) |
||
| 1182 | { |
||
| 1183 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1184 | GLchan *p = PIXELADDR3(x, y); |
||
| 1185 | GLuint i; |
||
| 1186 | if (mask) { |
||
| 1187 | for (i = 0; i < n; i++, p += 3) { |
||
| 1188 | if (mask[i]) { |
||
| 1189 | PACK_BGR(p, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]); |
||
| 1190 | } |
||
| 1191 | } |
||
| 1192 | } |
||
| 1193 | else { |
||
| 1194 | for (i = 0; i < n; i++, p += 3) { |
||
| 1195 | PACK_BGR(p, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]); |
||
| 1196 | } |
||
| 1197 | } |
||
| 1198 | } |
||
| 1199 | |||
| 1200 | |||
| 1201 | static void |
||
| 1202 | write_monocolor_span_RGB( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
| 1203 | const GLchan color[4], const GLubyte mask[] ) |
||
| 1204 | { |
||
| 1205 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1206 | GLchan *p = PIXELADDR3(x, y); |
||
| 1207 | GLuint i; |
||
| 1208 | for (i = 0; i < n; i++, p += 3) { |
||
| 1209 | if (mask[i]) { |
||
| 1210 | PACK_RGB(p, color[RCOMP], color[GCOMP], color[BCOMP]); |
||
| 1211 | } |
||
| 1212 | } |
||
| 1213 | } |
||
| 1214 | |||
| 1215 | static void |
||
| 1216 | write_monocolor_span_BGR( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
| 1217 | const GLchan color[4], const GLubyte mask[] ) |
||
| 1218 | { |
||
| 1219 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1220 | GLchan *p = PIXELADDR3(x, y); |
||
| 1221 | GLuint i; |
||
| 1222 | for (i = 0; i < n; i++, p += 3) { |
||
| 1223 | if (mask[i]) { |
||
| 1224 | PACK_BGR(p, color[RCOMP], color[GCOMP], color[BCOMP]); |
||
| 1225 | } |
||
| 1226 | } |
||
| 1227 | } |
||
| 1228 | |||
| 1229 | static void |
||
| 1230 | write_rgba_pixels_RGB( const GLcontext *ctx, GLuint n, |
||
| 1231 | const GLint x[], const GLint y[], |
||
| 1232 | CONST GLchan rgba[][4], const GLubyte mask[] ) |
||
| 1233 | { |
||
| 1234 | const OSMesaContext osmesa = (const OSMesaContext) ctx; |
||
| 1235 | GLuint i; |
||
| 1236 | for (i = 0; i < n; i++) { |
||
| 1237 | if (mask[i]) { |
||
| 1238 | GLchan *p = PIXELADDR3(x[i], y[i]); |
||
| 1239 | PACK_RGB(p, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]); |
||
| 1240 | } |
||
| 1241 | } |
||
| 1242 | } |
||
| 1243 | |||
| 1244 | static void |
||
| 1245 | write_rgba_pixels_BGR( const GLcontext *ctx, GLuint n, |
||
| 1246 | const GLint x[], const GLint y[], |
||
| 1247 | CONST GLchan rgba[][4], const GLubyte mask[] ) |
||
| 1248 | { |
||
| 1249 | const OSMesaContext osmesa = (const OSMesaContext) ctx; |
||
| 1250 | GLuint i; |
||
| 1251 | for (i = 0; i < n; i++) { |
||
| 1252 | if (mask[i]) { |
||
| 1253 | GLchan *p = PIXELADDR3(x[i], y[i]); |
||
| 1254 | PACK_BGR(p, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]); |
||
| 1255 | } |
||
| 1256 | } |
||
| 1257 | } |
||
| 1258 | |||
| 1259 | static void |
||
| 1260 | write_monocolor_pixels_RGB( const GLcontext *ctx, |
||
| 1261 | GLuint n, const GLint x[], const GLint y[], |
||
| 1262 | const GLchan color[4], const GLubyte mask[] ) |
||
| 1263 | { |
||
| 1264 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1265 | GLuint i; |
||
| 1266 | for (i = 0; i < n; i++) { |
||
| 1267 | if (mask[i]) { |
||
| 1268 | GLchan *p = PIXELADDR3(x[i], y[i]); |
||
| 1269 | PACK_RGB(p, color[RCOMP], color[GCOMP], color[BCOMP]); |
||
| 1270 | } |
||
| 1271 | } |
||
| 1272 | } |
||
| 1273 | |||
| 1274 | static void |
||
| 1275 | write_monocolor_pixels_BGR( const GLcontext *ctx, |
||
| 1276 | GLuint n, const GLint x[], const GLint y[], |
||
| 1277 | const GLchan color[4], const GLubyte mask[] ) |
||
| 1278 | { |
||
| 1279 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1280 | GLuint i; |
||
| 1281 | for (i = 0; i < n; i++) { |
||
| 1282 | if (mask[i]) { |
||
| 1283 | GLchan *p = PIXELADDR3(x[i], y[i]); |
||
| 1284 | PACK_BGR(p, color[RCOMP], color[GCOMP], color[BCOMP]); |
||
| 1285 | } |
||
| 1286 | } |
||
| 1287 | } |
||
| 1288 | |||
| 1289 | static void |
||
| 1290 | read_rgba_span3( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
| 1291 | GLchan rgba[][4] ) |
||
| 1292 | { |
||
| 1293 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1294 | GLuint i; |
||
| 1295 | const GLchan *p = PIXELADDR3(x, y); |
||
| 1296 | for (i = 0; i < n; i++, p += 3) { |
||
| 1297 | rgba[i][RCOMP] = UNPACK_RED(p); |
||
| 1298 | rgba[i][GCOMP] = UNPACK_GREEN(p); |
||
| 1299 | rgba[i][BCOMP] = UNPACK_BLUE(p); |
||
| 1300 | rgba[i][ACOMP] = CHAN_MAX; |
||
| 1301 | } |
||
| 1302 | } |
||
| 1303 | |||
| 1304 | static void |
||
| 1305 | read_rgba_pixels3( const GLcontext *ctx, |
||
| 1306 | GLuint n, const GLint x[], const GLint y[], |
||
| 1307 | GLchan rgba[][4], const GLubyte mask[] ) |
||
| 1308 | { |
||
| 1309 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1310 | GLuint i; |
||
| 1311 | for (i = 0; i < n; i++) { |
||
| 1312 | if (mask[i]) { |
||
| 1313 | const GLchan *p = PIXELADDR3(x[i], y[i]); |
||
| 1314 | rgba[i][RCOMP] = UNPACK_RED(p); |
||
| 1315 | rgba[i][GCOMP] = UNPACK_GREEN(p); |
||
| 1316 | rgba[i][BCOMP] = UNPACK_BLUE(p); |
||
| 1317 | rgba[i][ACOMP] = CHAN_MAX; |
||
| 1318 | } |
||
| 1319 | } |
||
| 1320 | } |
||
| 1321 | |||
| 1322 | |||
| 1323 | /**********************************************************************/ |
||
| 1324 | /***** 2 byte RGB pixel support funcs *****/ |
||
| 1325 | /**********************************************************************/ |
||
| 1326 | |||
| 1327 | /* Write RGBA pixels to an RGB_565 buffer. */ |
||
| 1328 | static void |
||
| 1329 | write_rgba_span2( const GLcontext *ctx, |
||
| 1330 | GLuint n, GLint x, GLint y, |
||
| 1331 | CONST GLchan rgba[][4], const GLubyte mask[] ) |
||
| 1332 | { |
||
| 1333 | OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1334 | GLushort *ptr2 = (GLushort *) PIXELADDR2(x, y); |
||
| 1335 | GLuint i; |
||
| 1336 | if (mask) { |
||
| 1337 | for (i = 0; i < n; i++, ptr2++) { |
||
| 1338 | if (mask[i]) { |
||
| 1339 | PACK_RGB_565(*ptr2, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]); |
||
| 1340 | } |
||
| 1341 | } |
||
| 1342 | } |
||
| 1343 | else { |
||
| 1344 | for (i = 0; i < n; i++, ptr2++) { |
||
| 1345 | PACK_RGB_565(*ptr2, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]); |
||
| 1346 | } |
||
| 1347 | } |
||
| 1348 | } |
||
| 1349 | |||
| 1350 | |||
| 1351 | /* Write RGB pixels to an RGB_565 buffer. */ |
||
| 1352 | static void |
||
| 1353 | write_rgb_span2( const GLcontext *ctx, |
||
| 1354 | GLuint n, GLint x, GLint y, |
||
| 1355 | CONST GLchan rgb[][3], const GLubyte mask[] ) |
||
| 1356 | { |
||
| 1357 | OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1358 | GLushort *ptr2 = (GLushort *) PIXELADDR2(x, y); |
||
| 1359 | GLuint i; |
||
| 1360 | if (mask) { |
||
| 1361 | for (i = 0; i < n; i++, ptr2++) { |
||
| 1362 | if (mask[i]) { |
||
| 1363 | PACK_RGB_565(*ptr2, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]); |
||
| 1364 | } |
||
| 1365 | } |
||
| 1366 | } |
||
| 1367 | else { |
||
| 1368 | for (i = 0; i < n; i++, ptr2++) { |
||
| 1369 | PACK_RGB_565(*ptr2, rgb[i][RCOMP], rgb[i][GCOMP], rgb[i][BCOMP]); |
||
| 1370 | } |
||
| 1371 | } |
||
| 1372 | } |
||
| 1373 | |||
| 1374 | |||
| 1375 | static void |
||
| 1376 | write_monocolor_span2( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
| 1377 | const GLchan color[4], const GLubyte mask[] ) |
||
| 1378 | { |
||
| 1379 | OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1380 | GLushort pixel; |
||
| 1381 | GLushort *ptr2 = (GLushort *) PIXELADDR2(x, y); |
||
| 1382 | GLuint i; |
||
| 1383 | PACK_RGB_565(pixel, color[RCOMP], color[GCOMP], color[BCOMP]); |
||
| 1384 | for (i = 0; i < n; i++, ptr2++) { |
||
| 1385 | if (mask[i]) { |
||
| 1386 | *ptr2 = pixel; |
||
| 1387 | } |
||
| 1388 | } |
||
| 1389 | } |
||
| 1390 | |||
| 1391 | |||
| 1392 | static void |
||
| 1393 | write_rgba_pixels2( const GLcontext *ctx, |
||
| 1394 | GLuint n, const GLint x[], const GLint y[], |
||
| 1395 | CONST GLchan rgba[][4], const GLubyte mask[] ) |
||
| 1396 | { |
||
| 1397 | OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1398 | GLuint i; |
||
| 1399 | for (i = 0; i < n; i++) { |
||
| 1400 | if (mask[i]) { |
||
| 1401 | GLushort *ptr2 = (GLushort *) PIXELADDR2(x[i],y[i]); |
||
| 1402 | PACK_RGB_565(*ptr2, rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]); |
||
| 1403 | } |
||
| 1404 | } |
||
| 1405 | } |
||
| 1406 | |||
| 1407 | static void |
||
| 1408 | write_monocolor_pixels2( const GLcontext *ctx, |
||
| 1409 | GLuint n, const GLint x[], const GLint y[], |
||
| 1410 | const GLchan color[4], const GLubyte mask[] ) |
||
| 1411 | { |
||
| 1412 | OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1413 | GLuint i; |
||
| 1414 | GLushort pixel; |
||
| 1415 | PACK_RGB_565(pixel, color[RCOMP], color[GCOMP], color[BCOMP]); |
||
| 1416 | for (i = 0; i < n; i++) { |
||
| 1417 | if (mask[i]) { |
||
| 1418 | GLushort *ptr2 = (GLushort *) PIXELADDR2(x[i],y[i]); |
||
| 1419 | *ptr2 = pixel; |
||
| 1420 | } |
||
| 1421 | } |
||
| 1422 | } |
||
| 1423 | |||
| 1424 | static void |
||
| 1425 | read_rgba_span2( const GLcontext *ctx, |
||
| 1426 | GLuint n, GLint x, GLint y, |
||
| 1427 | GLchan rgba[][4] ) |
||
| 1428 | { |
||
| 1429 | OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1430 | GLuint i; |
||
| 1431 | const GLushort *ptr2 = (const GLushort *) PIXELADDR2(x, y); |
||
| 1432 | for (i = 0; i < n; i++, ptr2++) { |
||
| 1433 | /* This should be fixed to get the low bits right */ |
||
| 1434 | rgba[i][RCOMP] = (*ptr2 >> 8) & 0xFe; |
||
| 1435 | rgba[i][GCOMP] = (*ptr2 >> 3) & 0xFc; |
||
| 1436 | rgba[i][BCOMP] = (*ptr2 << 3) & 0xFe; |
||
| 1437 | rgba[i][ACOMP] = 0; |
||
| 1438 | } |
||
| 1439 | } |
||
| 1440 | |||
| 1441 | static void |
||
| 1442 | read_rgba_pixels2( const GLcontext *ctx, |
||
| 1443 | GLuint n, const GLint x[], const GLint y[], |
||
| 1444 | GLchan rgba[][4], const GLubyte mask[] ) |
||
| 1445 | { |
||
| 1446 | OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1447 | GLuint i; |
||
| 1448 | for (i = 0; i < n; i++) { |
||
| 1449 | if (mask[i]) { |
||
| 1450 | /* This should be fixed to get the low bits right */ |
||
| 1451 | const GLushort *ptr2 = (const GLushort *) PIXELADDR2(x[i],y[i]); |
||
| 1452 | rgba[i][RCOMP] = (*ptr2 >> 8) & 0xFE; |
||
| 1453 | rgba[i][GCOMP] = (*ptr2 >> 3) & 0xFC; |
||
| 1454 | rgba[i][BCOMP] = (*ptr2 << 3) & 0xFE; |
||
| 1455 | rgba[i][ACOMP] = 0; |
||
| 1456 | } |
||
| 1457 | } |
||
| 1458 | } |
||
| 1459 | |||
| 1460 | |||
| 1461 | |||
| 1462 | /**********************************************************************/ |
||
| 1463 | /***** Read/write spans/arrays of CI pixels *****/ |
||
| 1464 | /**********************************************************************/ |
||
| 1465 | |||
| 1466 | /* Write 32-bit color index to buffer */ |
||
| 1467 | static void |
||
| 1468 | write_index32_span( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
| 1469 | const GLuint index[], const GLubyte mask[] ) |
||
| 1470 | { |
||
| 1471 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1472 | GLchan *ptr1 = PIXELADDR1(x, y); |
||
| 1473 | GLuint i; |
||
| 1474 | if (mask) { |
||
| 1475 | for (i=0;i<n;i++,ptr1++) { |
||
| 1476 | if (mask[i]) { |
||
| 1477 | *ptr1 = (GLchan) index[i]; |
||
| 1478 | } |
||
| 1479 | } |
||
| 1480 | } |
||
| 1481 | else { |
||
| 1482 | for (i=0;i<n;i++,ptr1++) { |
||
| 1483 | *ptr1 = (GLchan) index[i]; |
||
| 1484 | } |
||
| 1485 | } |
||
| 1486 | } |
||
| 1487 | |||
| 1488 | |||
| 1489 | /* Write 8-bit color index to buffer */ |
||
| 1490 | static void |
||
| 1491 | write_index8_span( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
| 1492 | const GLubyte index[], const GLubyte mask[] ) |
||
| 1493 | { |
||
| 1494 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1495 | GLchan *ptr1 = PIXELADDR1(x, y); |
||
| 1496 | GLuint i; |
||
| 1497 | if (mask) { |
||
| 1498 | for (i=0;i<n;i++,ptr1++) { |
||
| 1499 | if (mask[i]) { |
||
| 1500 | *ptr1 = (GLchan) index[i]; |
||
| 1501 | } |
||
| 1502 | } |
||
| 1503 | } |
||
| 1504 | else { |
||
| 1505 | MEMCPY(ptr1, index, n * sizeof(GLchan)); |
||
| 1506 | } |
||
| 1507 | } |
||
| 1508 | |||
| 1509 | |||
| 1510 | static void |
||
| 1511 | write_monoindex_span( const GLcontext *ctx, GLuint n, GLint x, GLint y, |
||
| 1512 | GLuint colorIndex, const GLubyte mask[] ) |
||
| 1513 | { |
||
| 1514 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1515 | GLchan *ptr1 = PIXELADDR1(x, y); |
||
| 1516 | GLuint i; |
||
| 1517 | for (i=0;i<n;i++,ptr1++) { |
||
| 1518 | if (mask[i]) { |
||
| 1519 | *ptr1 = (GLchan) colorIndex; |
||
| 1520 | } |
||
| 1521 | } |
||
| 1522 | } |
||
| 1523 | |||
| 1524 | |||
| 1525 | static void |
||
| 1526 | write_index_pixels( const GLcontext *ctx, |
||
| 1527 | GLuint n, const GLint x[], const GLint y[], |
||
| 1528 | const GLuint index[], const GLubyte mask[] ) |
||
| 1529 | { |
||
| 1530 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1531 | GLuint i; |
||
| 1532 | for (i=0;i<n;i++) { |
||
| 1533 | if (mask[i]) { |
||
| 1534 | GLchan *ptr1 = PIXELADDR1(x[i], y[i]); |
||
| 1535 | *ptr1 = (GLchan) index[i]; |
||
| 1536 | } |
||
| 1537 | } |
||
| 1538 | } |
||
| 1539 | |||
| 1540 | |||
| 1541 | static void |
||
| 1542 | write_monoindex_pixels( const GLcontext *ctx, |
||
| 1543 | GLuint n, const GLint x[], const GLint y[], |
||
| 1544 | GLuint colorIndex, const GLubyte mask[] ) |
||
| 1545 | { |
||
| 1546 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1547 | GLuint i; |
||
| 1548 | for (i=0;i<n;i++) { |
||
| 1549 | if (mask[i]) { |
||
| 1550 | GLchan *ptr1 = PIXELADDR1(x[i], y[i]); |
||
| 1551 | *ptr1 = (GLchan) colorIndex; |
||
| 1552 | } |
||
| 1553 | } |
||
| 1554 | } |
||
| 1555 | |||
| 1556 | |||
| 1557 | static void |
||
| 1558 | read_index_span( const GLcontext *ctx, |
||
| 1559 | GLuint n, GLint x, GLint y, GLuint index[] ) |
||
| 1560 | { |
||
| 1561 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1562 | GLuint i; |
||
| 1563 | const GLchan *ptr1 = (const GLchan *) PIXELADDR1(x, y); |
||
| 1564 | for (i=0;i<n;i++,ptr1++) { |
||
| 1565 | index[i] = (GLuint) *ptr1; |
||
| 1566 | } |
||
| 1567 | } |
||
| 1568 | |||
| 1569 | |||
| 1570 | static void |
||
| 1571 | read_index_pixels( const GLcontext *ctx, |
||
| 1572 | GLuint n, const GLint x[], const GLint y[], |
||
| 1573 | GLuint index[], const GLubyte mask[] ) |
||
| 1574 | { |
||
| 1575 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1576 | GLuint i; |
||
| 1577 | for (i=0;i<n;i++) { |
||
| 1578 | if (mask[i] ) { |
||
| 1579 | const GLchan *ptr1 = PIXELADDR1(x[i], y[i]); |
||
| 1580 | index[i] = (GLuint) *ptr1; |
||
| 1581 | } |
||
| 1582 | } |
||
| 1583 | } |
||
| 1584 | |||
| 1585 | |||
| 1586 | |||
| 1587 | /**********************************************************************/ |
||
| 1588 | /***** Optimized line rendering *****/ |
||
| 1589 | /**********************************************************************/ |
||
| 1590 | |||
| 1591 | |||
| 1592 | /* |
||
| 1593 | * Draw a flat-shaded, RGB line into an osmesa buffer. |
||
| 1594 | */ |
||
| 1595 | static void |
||
| 1596 | flat_rgba_line( GLcontext *ctx, const SWvertex *vert0, const SWvertex *vert1 ) |
||
| 1597 | { |
||
| 1598 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1599 | const GLchan *color = vert1->color; |
||
| 1600 | |||
| 1601 | #define INTERP_XY 1 |
||
| 1602 | #define CLIP_HACK 1 |
||
| 1603 | #define PLOT(X, Y) \ |
||
| 1604 | do { \ |
||
| 1605 | GLchan *p = PIXELADDR4(X, Y); \ |
||
| 1606 | PACK_RGBA(p, color[0], color[1], color[2], color[3]); \ |
||
| 1607 | } while (0) |
||
| 1608 | |||
| 1609 | #ifdef WIN32 |
||
| 1610 | #include "..\swrast\s_linetemp.h" |
||
| 1611 | #else |
||
| 1612 | #include "swrast/s_linetemp.h" |
||
| 1613 | #endif |
||
| 1614 | } |
||
| 1615 | |||
| 1616 | |||
| 1617 | /* |
||
| 1618 | * Draw a flat-shaded, Z-less, RGB line into an osmesa buffer. |
||
| 1619 | */ |
||
| 1620 | static void |
||
| 1621 | flat_rgba_z_line(GLcontext *ctx, const SWvertex *vert0, const SWvertex *vert1) |
||
| 1622 | { |
||
| 1623 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1624 | const GLchan *color = vert1->color; |
||
| 1625 | |||
| 1626 | #define INTERP_XY 1 |
||
| 1627 | #define INTERP_Z 1 |
||
| 1628 | #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE |
||
| 1629 | #define CLIP_HACK 1 |
||
| 1630 | #define PLOT(X, Y) \ |
||
| 1631 | do { \ |
||
| 1632 | if (Z < *zPtr) { \ |
||
| 1633 | GLchan *p = PIXELADDR4(X, Y); \ |
||
| 1634 | PACK_RGBA(p, color[RCOMP], color[GCOMP], \ |
||
| 1635 | color[BCOMP], color[ACOMP]); \ |
||
| 1636 | *zPtr = Z; \ |
||
| 1637 | } \ |
||
| 1638 | } while (0) |
||
| 1639 | |||
| 1640 | |||
| 1641 | #ifdef WIN32 |
||
| 1642 | #include "..\swrast\s_linetemp.h" |
||
| 1643 | #else |
||
| 1644 | #include "swrast/s_linetemp.h" |
||
| 1645 | #endif |
||
| 1646 | } |
||
| 1647 | |||
| 1648 | |||
| 1649 | /* |
||
| 1650 | * Draw a flat-shaded, alpha-blended, RGB line into an osmesa buffer. |
||
| 1651 | * XXX update for GLchan |
||
| 1652 | */ |
||
| 1653 | static void |
||
| 1654 | flat_blend_rgba_line( GLcontext *ctx, |
||
| 1655 | const SWvertex *vert0, const SWvertex *vert1 ) |
||
| 1656 | { |
||
| 1657 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1658 | const GLint rshift = osmesa->rshift; |
||
| 1659 | const GLint gshift = osmesa->gshift; |
||
| 1660 | const GLint bshift = osmesa->bshift; |
||
| 1661 | const GLint avalue = vert0->color[3]; |
||
| 1662 | const GLint msavalue = CHAN_MAX - avalue; |
||
| 1663 | const GLint rvalue = vert1->color[0]*avalue; |
||
| 1664 | const GLint gvalue = vert1->color[1]*avalue; |
||
| 1665 | const GLint bvalue = vert1->color[2]*avalue; |
||
| 1666 | |||
| 1667 | #define INTERP_XY 1 |
||
| 1668 | #define CLIP_HACK 1 |
||
| 1669 | #define PLOT(X,Y) \ |
||
| 1670 | { GLuint *ptr4 = (GLuint *) PIXELADDR4(X, Y); \ |
||
| 1671 | GLuint pixel = 0; \ |
||
| 1672 | pixel |=((((((*ptr4) >> rshift) & 0xff)*msavalue+rvalue)>>8) << rshift);\ |
||
| 1673 | pixel |=((((((*ptr4) >> gshift) & 0xff)*msavalue+gvalue)>>8) << gshift);\ |
||
| 1674 | pixel |=((((((*ptr4) >> bshift) & 0xff)*msavalue+bvalue)>>8) << bshift);\ |
||
| 1675 | *ptr4 = pixel; \ |
||
| 1676 | } |
||
| 1677 | |||
| 1678 | #if 0 /* XXX use this in the future */ |
||
| 1679 | #define PLOT(X,Y) \ |
||
| 1680 | { \ |
||
| 1681 | GLchan *pixel = (GLchan *) PIXELADDR4(X, Y); \ |
||
| 1682 | pixel[rInd] = (pixel[rInd] * msavalue + rvalue) >> CHAN_BITS; \ |
||
| 1683 | pixel[gInd] = (pixel[gInd] * msavalue + gvalue) >> CHAN_BITS; \ |
||
| 1684 | pixel[bInd] = (pixel[bInd] * msavalue + bvalue) >> CHAN_BITS; \ |
||
| 1685 | pixel[aInd] = (pixel[aInd] * msavalue + avalue) >> CHAN_BITS; \ |
||
| 1686 | } |
||
| 1687 | #endif |
||
| 1688 | |||
| 1689 | #ifdef WIN32 |
||
| 1690 | #include "..\swrast\s_linetemp.h" |
||
| 1691 | #else |
||
| 1692 | #include "swrast/s_linetemp.h" |
||
| 1693 | #endif |
||
| 1694 | } |
||
| 1695 | |||
| 1696 | |||
| 1697 | /* |
||
| 1698 | * Draw a flat-shaded, Z-less, alpha-blended, RGB line into an osmesa buffer. |
||
| 1699 | * But don't write to Z buffer. |
||
| 1700 | * XXX update for GLchan |
||
| 1701 | */ |
||
| 1702 | static void |
||
| 1703 | flat_blend_rgba_z_line( GLcontext *ctx, |
||
| 1704 | const SWvertex *vert0, const SWvertex *vert1 ) |
||
| 1705 | { |
||
| 1706 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1707 | const GLint rshift = osmesa->rshift; |
||
| 1708 | const GLint gshift = osmesa->gshift; |
||
| 1709 | const GLint bshift = osmesa->bshift; |
||
| 1710 | const GLint avalue = vert0->color[3]; |
||
| 1711 | const GLint msavalue = 256 - avalue; |
||
| 1712 | const GLint rvalue = vert1->color[0]*avalue; |
||
| 1713 | const GLint gvalue = vert1->color[1]*avalue; |
||
| 1714 | const GLint bvalue = vert1->color[2]*avalue; |
||
| 1715 | |||
| 1716 | #define INTERP_XY 1 |
||
| 1717 | #define INTERP_Z 1 |
||
| 1718 | #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE |
||
| 1719 | #define CLIP_HACK 1 |
||
| 1720 | #define PLOT(X,Y) \ |
||
| 1721 | if (Z < *zPtr) { \ |
||
| 1722 | GLuint *ptr4 = (GLuint *) PIXELADDR4(X, Y); \ |
||
| 1723 | GLuint pixel = 0; \ |
||
| 1724 | pixel |=((((((*ptr4) >> rshift) & 0xff)*msavalue+rvalue)>>8) << rshift); \ |
||
| 1725 | pixel |=((((((*ptr4) >> gshift) & 0xff)*msavalue+gvalue)>>8) << gshift); \ |
||
| 1726 | pixel |=((((((*ptr4) >> bshift) & 0xff)*msavalue+bvalue)>>8) << bshift); \ |
||
| 1727 | *ptr4 = pixel; \ |
||
| 1728 | } |
||
| 1729 | |||
| 1730 | #if 0 /* XXX use this in the future */ |
||
| 1731 | #define PLOT(X,Y) \ |
||
| 1732 | if (Z < *zPtr) { \ |
||
| 1733 | GLchan *pixel = (GLchan *) PIXELADDR4(X, Y); \ |
||
| 1734 | pixel[rInd] = (pixel[rInd] * msavalue + rvalue) >> CHAN_BITS; \ |
||
| 1735 | pixel[gInd] = (pixel[gInd] * msavalue + gvalue) >> CHAN_BITS; \ |
||
| 1736 | pixel[bInd] = (pixel[bInd] * msavalue + bvalue) >> CHAN_BITS; \ |
||
| 1737 | pixel[aInd] = (pixel[aInd] * msavalue + avalue) >> CHAN_BITS; \ |
||
| 1738 | } |
||
| 1739 | #endif |
||
| 1740 | |||
| 1741 | #ifdef WIN32 |
||
| 1742 | #include "..\swrast\s_linetemp.h" |
||
| 1743 | #else |
||
| 1744 | #include "swrast/s_linetemp.h" |
||
| 1745 | #endif |
||
| 1746 | } |
||
| 1747 | |||
| 1748 | |||
| 1749 | /* |
||
| 1750 | * Draw a flat-shaded, Z-less, alpha-blended, RGB line into an osmesa buffer. |
||
| 1751 | * XXX update for GLchan |
||
| 1752 | */ |
||
| 1753 | static void |
||
| 1754 | flat_blend_rgba_z_line_write( GLcontext *ctx, |
||
| 1755 | const SWvertex *vert0, const SWvertex *vert1 ) |
||
| 1756 | { |
||
| 1757 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1758 | const GLint rshift = osmesa->rshift; |
||
| 1759 | const GLint gshift = osmesa->gshift; |
||
| 1760 | const GLint bshift = osmesa->bshift; |
||
| 1761 | const GLint avalue = vert0->color[3]; |
||
| 1762 | const GLint msavalue = 256 - avalue; |
||
| 1763 | const GLint rvalue = vert1->color[0]*avalue; |
||
| 1764 | const GLint gvalue = vert1->color[1]*avalue; |
||
| 1765 | const GLint bvalue = vert1->color[2]*avalue; |
||
| 1766 | |||
| 1767 | #define INTERP_XY 1 |
||
| 1768 | #define INTERP_Z 1 |
||
| 1769 | #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE |
||
| 1770 | #define CLIP_HACK 1 |
||
| 1771 | #define PLOT(X,Y) \ |
||
| 1772 | if (Z < *zPtr) { \ |
||
| 1773 | GLuint *ptr4 = (GLuint *) PIXELADDR4(X, Y); \ |
||
| 1774 | GLuint pixel = 0; \ |
||
| 1775 | pixel |=((((((*ptr4) >> rshift) & 0xff)*msavalue+rvalue)>>8) << rshift); \ |
||
| 1776 | pixel |=((((((*ptr4) >> gshift) & 0xff)*msavalue+gvalue)>>8) << gshift); \ |
||
| 1777 | pixel |=((((((*ptr4) >> bshift) & 0xff)*msavalue+bvalue)>>8) << bshift); \ |
||
| 1778 | *ptr4 = pixel; \ |
||
| 1779 | *zPtr = Z; \ |
||
| 1780 | } |
||
| 1781 | |||
| 1782 | #if 0 /* XXX use this in the future */ |
||
| 1783 | #define PLOT(X,Y) \ |
||
| 1784 | if (Z < *zPtr) { \ |
||
| 1785 | GLchan *pixel = (GLchan *) PIXELADDR4(X, Y); \ |
||
| 1786 | pixel[rInd] = (pixel[rInd] * msavalue + rvalue) >> CHAN_BITS; \ |
||
| 1787 | pixel[gInd] = (pixel[gInd] * msavalue + gvalue) >> CHAN_BITS; \ |
||
| 1788 | pixel[bInd] = (pixel[bInd] * msavalue + bvalue) >> CHAN_BITS; \ |
||
| 1789 | pixel[aInd] = (pixel[aInd] * msavalue + avalue) >> CHAN_BITS; \ |
||
| 1790 | *zPtr = Z; \ |
||
| 1791 | } |
||
| 1792 | #endif |
||
| 1793 | |||
| 1794 | #ifdef WIN32 |
||
| 1795 | #include "..\swrast\s_linetemp.h" |
||
| 1796 | #else |
||
| 1797 | #include "swrast/s_linetemp.h" |
||
| 1798 | #endif |
||
| 1799 | } |
||
| 1800 | |||
| 1801 | |||
| 1802 | /* |
||
| 1803 | * Analyze context state to see if we can provide a fast line drawing |
||
| 1804 | * function, like those in lines.c. Otherwise, return NULL. |
||
| 1805 | */ |
||
| 1806 | static swrast_line_func |
||
| 1807 | osmesa_choose_line_function( GLcontext *ctx ) |
||
| 1808 | { |
||
| 1809 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1810 | const SWcontext *swrast = SWRAST_CONTEXT(ctx); |
||
| 1811 | |||
| 1812 | if (CHAN_BITS != 8) return NULL; |
||
| 1813 | if (ctx->RenderMode != GL_RENDER) return NULL; |
||
| 1814 | if (ctx->Line.SmoothFlag) return NULL; |
||
| 1815 | if (ctx->Texture._EnabledUnits) return NULL; |
||
| 1816 | if (ctx->Light.ShadeModel != GL_FLAT) return NULL; |
||
| 1817 | if (ctx->Line.Width != 1.0F) return NULL; |
||
| 1818 | if (ctx->Line.StippleFlag) return NULL; |
||
| 1819 | if (ctx->Line.SmoothFlag) return NULL; |
||
| 1820 | if (osmesa->format != OSMESA_RGBA && |
||
| 1821 | osmesa->format != OSMESA_BGRA && |
||
| 1822 | osmesa->format != OSMESA_ARGB) return NULL; |
||
| 1823 | |||
| 1824 | if (swrast->_RasterMask==DEPTH_BIT |
||
| 1825 | && ctx->Depth.Func==GL_LESS |
||
| 1826 | && ctx->Depth.Mask==GL_TRUE |
||
| 1827 | && ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS) { |
||
| 1828 | return (swrast_line_func) flat_rgba_z_line; |
||
| 1829 | } |
||
| 1830 | |||
| 1831 | if (swrast->_RasterMask == 0) { |
||
| 1832 | return (swrast_line_func) flat_rgba_line; |
||
| 1833 | } |
||
| 1834 | |||
| 1835 | if (swrast->_RasterMask==(DEPTH_BIT|BLEND_BIT) |
||
| 1836 | && ctx->Depth.Func==GL_LESS |
||
| 1837 | && ctx->Depth.Mask==GL_TRUE |
||
| 1838 | && ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS |
||
| 1839 | && ctx->Color.BlendSrcRGB==GL_SRC_ALPHA |
||
| 1840 | && ctx->Color.BlendDstRGB==GL_ONE_MINUS_SRC_ALPHA |
||
| 1841 | && ctx->Color.BlendSrcA==GL_SRC_ALPHA |
||
| 1842 | && ctx->Color.BlendDstA==GL_ONE_MINUS_SRC_ALPHA |
||
| 1843 | && ctx->Color.BlendEquation==GL_FUNC_ADD_EXT) { |
||
| 1844 | return (swrast_line_func) flat_blend_rgba_z_line_write; |
||
| 1845 | } |
||
| 1846 | |||
| 1847 | if (swrast->_RasterMask==(DEPTH_BIT|BLEND_BIT) |
||
| 1848 | && ctx->Depth.Func==GL_LESS |
||
| 1849 | && ctx->Depth.Mask==GL_FALSE |
||
| 1850 | && ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS |
||
| 1851 | && ctx->Color.BlendSrcRGB==GL_SRC_ALPHA |
||
| 1852 | && ctx->Color.BlendDstRGB==GL_ONE_MINUS_SRC_ALPHA |
||
| 1853 | && ctx->Color.BlendSrcA==GL_SRC_ALPHA |
||
| 1854 | && ctx->Color.BlendDstA==GL_ONE_MINUS_SRC_ALPHA |
||
| 1855 | && ctx->Color.BlendEquation==GL_FUNC_ADD_EXT) { |
||
| 1856 | return (swrast_line_func) flat_blend_rgba_z_line; |
||
| 1857 | } |
||
| 1858 | |||
| 1859 | if (swrast->_RasterMask==BLEND_BIT |
||
| 1860 | && ctx->Color.BlendSrcRGB==GL_SRC_ALPHA |
||
| 1861 | && ctx->Color.BlendDstRGB==GL_ONE_MINUS_SRC_ALPHA |
||
| 1862 | && ctx->Color.BlendSrcA==GL_SRC_ALPHA |
||
| 1863 | && ctx->Color.BlendDstA==GL_ONE_MINUS_SRC_ALPHA |
||
| 1864 | && ctx->Color.BlendEquation==GL_FUNC_ADD_EXT) { |
||
| 1865 | return (swrast_line_func) flat_blend_rgba_line; |
||
| 1866 | } |
||
| 1867 | |||
| 1868 | return (swrast_line_func) NULL; |
||
| 1869 | } |
||
| 1870 | |||
| 1871 | |||
| 1872 | /**********************************************************************/ |
||
| 1873 | /***** Optimized triangle rendering *****/ |
||
| 1874 | /**********************************************************************/ |
||
| 1875 | |||
| 1876 | |||
| 1877 | /* |
||
| 1878 | * Smooth-shaded, z-less triangle, RGBA color. |
||
| 1879 | */ |
||
| 1880 | static void smooth_rgba_z_triangle( GLcontext *ctx, |
||
| 1881 | const SWvertex *v0, |
||
| 1882 | const SWvertex *v1, |
||
| 1883 | const SWvertex *v2 ) |
||
| 1884 | { |
||
| 1885 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1886 | #define INTERP_Z 1 |
||
| 1887 | #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE |
||
| 1888 | #define INTERP_RGB 1 |
||
| 1889 | #define INTERP_ALPHA 1 |
||
| 1890 | #define RENDER_SPAN( span ) \ |
||
| 1891 | GLuint i; \ |
||
| 1892 | GLchan *img = PIXELADDR4(span.x, span.y); \ |
||
| 1893 | for (i = 0; i < span.end; i++, img += 4) { \ |
||
| 1894 | const GLdepth z = FixedToDepth(span.z); \ |
||
| 1895 | if (z < zRow[i]) { \ |
||
| 1896 | PACK_RGBA(img, FixedToChan(span.red), \ |
||
| 1897 | FixedToChan(span.green), FixedToChan(span.blue), \ |
||
| 1898 | FixedToChan(span.alpha)); \ |
||
| 1899 | zRow[i] = z; \ |
||
| 1900 | } \ |
||
| 1901 | span.red += span.redStep; \ |
||
| 1902 | span.green += span.greenStep; \ |
||
| 1903 | span.blue += span.blueStep; \ |
||
| 1904 | span.alpha += span.alphaStep; \ |
||
| 1905 | span.z += span.zStep; \ |
||
| 1906 | } |
||
| 1907 | |||
| 1908 | #ifdef WIN32 |
||
| 1909 | #include "..\swrast\s_tritemp.h" |
||
| 1910 | #else |
||
| 1911 | #include "swrast/s_tritemp.h" |
||
| 1912 | #endif |
||
| 1913 | } |
||
| 1914 | |||
| 1915 | |||
| 1916 | |||
| 1917 | |||
| 1918 | /* |
||
| 1919 | * Flat-shaded, z-less triangle, RGBA color. |
||
| 1920 | */ |
||
| 1921 | static void flat_rgba_z_triangle( GLcontext *ctx, |
||
| 1922 | const SWvertex *v0, |
||
| 1923 | const SWvertex *v1, |
||
| 1924 | const SWvertex *v2 ) |
||
| 1925 | { |
||
| 1926 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1927 | #define INTERP_Z 1 |
||
| 1928 | #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE |
||
| 1929 | #define SETUP_CODE \ |
||
| 1930 | GLuint pixel; \ |
||
| 1931 | PACK_RGBA((GLchan *) &pixel, v2->color[0], v2->color[1], \ |
||
| 1932 | v2->color[2], v2->color[3]); |
||
| 1933 | |||
| 1934 | #define RENDER_SPAN( span ) \ |
||
| 1935 | GLuint i; \ |
||
| 1936 | GLuint *img = (GLuint *) PIXELADDR4(span.x, span.y); \ |
||
| 1937 | for (i = 0; i < span.end; i++) { \ |
||
| 1938 | const GLdepth z = FixedToDepth(span.z); \ |
||
| 1939 | if (z < zRow[i]) { \ |
||
| 1940 | img[i] = pixel; \ |
||
| 1941 | zRow[i] = z; \ |
||
| 1942 | } \ |
||
| 1943 | span.z += span.zStep; \ |
||
| 1944 | } |
||
| 1945 | |||
| 1946 | #ifdef WIN32 |
||
| 1947 | #include "..\swrast\s_tritemp.h" |
||
| 1948 | #else |
||
| 1949 | #include "swrast/s_tritemp.h" |
||
| 1950 | #endif |
||
| 1951 | } |
||
| 1952 | |||
| 1953 | |||
| 1954 | |||
| 1955 | /* |
||
| 1956 | * Return pointer to an accelerated triangle function if possible. |
||
| 1957 | */ |
||
| 1958 | static swrast_tri_func |
||
| 1959 | osmesa_choose_triangle_function( GLcontext *ctx ) |
||
| 1960 | { |
||
| 1961 | const OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 1962 | const SWcontext *swrast = SWRAST_CONTEXT(ctx); |
||
| 1963 | |||
| 1964 | if (CHAN_BITS != 8) return (swrast_tri_func) NULL; |
||
| 1965 | if (ctx->RenderMode != GL_RENDER) return (swrast_tri_func) NULL; |
||
| 1966 | if (ctx->Polygon.SmoothFlag) return (swrast_tri_func) NULL; |
||
| 1967 | if (ctx->Polygon.StippleFlag) return (swrast_tri_func) NULL; |
||
| 1968 | if (ctx->Texture._EnabledUnits) return (swrast_tri_func) NULL; |
||
| 1969 | if (osmesa->format != OSMESA_RGBA && |
||
| 1970 | osmesa->format != OSMESA_BGRA && |
||
| 1971 | osmesa->format != OSMESA_ARGB) return (swrast_tri_func) NULL; |
||
| 1972 | if (ctx->Polygon.CullFlag && |
||
| 1973 | ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK) |
||
| 1974 | return (swrast_tri_func) NULL; |
||
| 1975 | |||
| 1976 | if (swrast->_RasterMask == DEPTH_BIT && |
||
| 1977 | ctx->Depth.Func == GL_LESS && |
||
| 1978 | ctx->Depth.Mask == GL_TRUE && |
||
| 1979 | ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS) { |
||
| 1980 | if (ctx->Light.ShadeModel == GL_SMOOTH) { |
||
| 1981 | return (swrast_tri_func) smooth_rgba_z_triangle; |
||
| 1982 | } |
||
| 1983 | else { |
||
| 1984 | return (swrast_tri_func) flat_rgba_z_triangle; |
||
| 1985 | } |
||
| 1986 | } |
||
| 1987 | return (swrast_tri_func) NULL; |
||
| 1988 | } |
||
| 1989 | |||
| 1990 | |||
| 1991 | |||
| 1992 | /* Override for the swrast triangle-selection function. Try to use one |
||
| 1993 | * of our internal triangle functions, otherwise fall back to the |
||
| 1994 | * standard swrast functions. |
||
| 1995 | */ |
||
| 1996 | static void osmesa_choose_triangle( GLcontext *ctx ) |
||
| 1997 | { |
||
| 1998 | SWcontext *swrast = SWRAST_CONTEXT(ctx); |
||
| 1999 | |||
| 2000 | swrast->Triangle = osmesa_choose_triangle_function( ctx ); |
||
| 2001 | if (!swrast->Triangle) |
||
| 2002 | _swrast_choose_triangle( ctx ); |
||
| 2003 | } |
||
| 2004 | |||
| 2005 | static void osmesa_choose_line( GLcontext *ctx ) |
||
| 2006 | { |
||
| 2007 | SWcontext *swrast = SWRAST_CONTEXT(ctx); |
||
| 2008 | |||
| 2009 | swrast->Line = osmesa_choose_line_function( ctx ); |
||
| 2010 | if (!swrast->Line) |
||
| 2011 | _swrast_choose_line( ctx ); |
||
| 2012 | } |
||
| 2013 | |||
| 2014 | |||
| 2015 | #define OSMESA_NEW_LINE (_NEW_LINE | \ |
||
| 2016 | _NEW_TEXTURE | \ |
||
| 2017 | _NEW_LIGHT | \ |
||
| 2018 | _NEW_DEPTH | \ |
||
| 2019 | _NEW_RENDERMODE | \ |
||
| 2020 | _SWRAST_NEW_RASTERMASK) |
||
| 2021 | |||
| 2022 | #define OSMESA_NEW_TRIANGLE (_NEW_POLYGON | \ |
||
| 2023 | _NEW_TEXTURE | \ |
||
| 2024 | _NEW_LIGHT | \ |
||
| 2025 | _NEW_DEPTH | \ |
||
| 2026 | _NEW_RENDERMODE | \ |
||
| 2027 | _SWRAST_NEW_RASTERMASK) |
||
| 2028 | |||
| 2029 | |||
| 2030 | /* Extend the software rasterizer with our line and triangle |
||
| 2031 | * functions. |
||
| 2032 | */ |
||
| 2033 | static void osmesa_register_swrast_functions( GLcontext *ctx ) |
||
| 2034 | { |
||
| 2035 | SWcontext *swrast = SWRAST_CONTEXT( ctx ); |
||
| 2036 | |||
| 2037 | swrast->choose_line = osmesa_choose_line; |
||
| 2038 | swrast->choose_triangle = osmesa_choose_triangle; |
||
| 2039 | |||
| 2040 | swrast->invalidate_line |= OSMESA_NEW_LINE; |
||
| 2041 | swrast->invalidate_triangle |= OSMESA_NEW_TRIANGLE; |
||
| 2042 | } |
||
| 2043 | |||
| 2044 | |||
| 2045 | static const GLubyte *get_string( GLcontext *ctx, GLenum name ) |
||
| 2046 | { |
||
| 2047 | (void) ctx; |
||
| 2048 | switch (name) { |
||
| 2049 | case GL_RENDERER: |
||
| 2050 | #if CHAN_BITS == 32 |
||
| 2051 | return (const GLubyte *) "Mesa OffScreen32"; |
||
| 2052 | #elif CHAN_BITS == 16 |
||
| 2053 | return (const GLubyte *) "Mesa OffScreen16"; |
||
| 2054 | #else |
||
| 2055 | return (const GLubyte *) "Mesa OffScreen"; |
||
| 2056 | #endif |
||
| 2057 | default: |
||
| 2058 | return NULL; |
||
| 2059 | } |
||
| 2060 | } |
||
| 2061 | |||
| 2062 | |||
| 2063 | static void osmesa_update_state( GLcontext *ctx, GLuint new_state ) |
||
| 2064 | { |
||
| 2065 | OSMesaContext osmesa = OSMESA_CONTEXT(ctx); |
||
| 2066 | struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference( ctx ); |
||
| 2067 | TNLcontext *tnl = TNL_CONTEXT(ctx); |
||
| 2068 | |||
| 2069 | ASSERT((void *) osmesa == (void *) ctx->DriverCtx); |
||
| 2070 | |||
| 2071 | /* |
||
| 2072 | * XXX these function pointers could be initialized just once during |
||
| 2073 | * context creation since they don't depend on any state changes. |
||
| 2074 | */ |
||
| 2075 | |||
| 2076 | ctx->Driver.GetString = get_string; |
||
| 2077 | ctx->Driver.UpdateState = osmesa_update_state; |
||
| 2078 | ctx->Driver.ResizeBuffers = _swrast_alloc_buffers; |
||
| 2079 | ctx->Driver.GetBufferSize = buffer_size; |
||
| 2080 | |||
| 2081 | ctx->Driver.Accum = _swrast_Accum; |
||
| 2082 | ctx->Driver.Bitmap = _swrast_Bitmap; |
||
| 2083 | ctx->Driver.Clear = mesa_clear; |
||
| 2084 | ctx->Driver.CopyPixels = _swrast_CopyPixels; |
||
| 2085 | ctx->Driver.DrawPixels = _swrast_DrawPixels; |
||
| 2086 | ctx->Driver.ReadPixels = _swrast_ReadPixels; |
||
| 2087 | ctx->Driver.DrawBuffer = _swrast_DrawBuffer; |
||
| 2088 | |||
| 2089 | ctx->Driver.ChooseTextureFormat = _mesa_choose_tex_format; |
||
| 2090 | ctx->Driver.TexImage1D = _mesa_store_teximage1d; |
||
| 2091 | ctx->Driver.TexImage2D = _mesa_store_teximage2d; |
||
| 2092 | ctx->Driver.TexImage3D = _mesa_store_teximage3d; |
||
| 2093 | ctx->Driver.TexSubImage1D = _mesa_store_texsubimage1d; |
||
| 2094 | ctx->Driver.TexSubImage2D = _mesa_store_texsubimage2d; |
||
| 2095 | ctx->Driver.TexSubImage3D = _mesa_store_texsubimage3d; |
||
| 2096 | ctx->Driver.TestProxyTexImage = _mesa_test_proxy_teximage; |
||
| 2097 | |||
| 2098 | ctx->Driver.CompressedTexImage1D = _mesa_store_compressed_teximage1d; |
||
| 2099 | ctx->Driver.CompressedTexImage2D = _mesa_store_compressed_teximage2d; |
||
| 2100 | ctx->Driver.CompressedTexImage3D = _mesa_store_compressed_teximage3d; |
||
| 2101 | ctx->Driver.CompressedTexSubImage1D = _mesa_store_compressed_texsubimage1d; |
||
| 2102 | ctx->Driver.CompressedTexSubImage2D = _mesa_store_compressed_texsubimage2d; |
||
| 2103 | ctx->Driver.CompressedTexSubImage3D = _mesa_store_compressed_texsubimage3d; |
||
| 2104 | |||
| 2105 | ctx->Driver.CopyTexImage1D = _swrast_copy_teximage1d; |
||
| 2106 | ctx->Driver.CopyTexImage2D = _swrast_copy_teximage2d; |
||
| 2107 | ctx->Driver.CopyTexSubImage1D = _swrast_copy_texsubimage1d; |
||
| 2108 | ctx->Driver.CopyTexSubImage2D = _swrast_copy_texsubimage2d; |
||
| 2109 | ctx->Driver.CopyTexSubImage3D = _swrast_copy_texsubimage3d; |
||
| 2110 | ctx->Driver.CopyColorTable = _swrast_CopyColorTable; |
||
| 2111 | ctx->Driver.CopyColorSubTable = _swrast_CopyColorSubTable; |
||
| 2112 | ctx->Driver.CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D; |
||
| 2113 | ctx->Driver.CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D; |
||
| 2114 | |||
| 2115 | swdd->SetBuffer = set_buffer; |
||
| 2116 | |||
| 2117 | /* RGB(A) span/pixel functions */ |
||
| 2118 | if (osmesa->format == OSMESA_RGB) { |
||
| 2119 | swdd->WriteRGBASpan = write_rgba_span_RGB; |
||
| 2120 | swdd->WriteRGBSpan = write_rgb_span_RGB; |
||
| 2121 | swdd->WriteMonoRGBASpan = write_monocolor_span_RGB; |
||
| 2122 | swdd->WriteRGBAPixels = write_rgba_pixels_RGB; |
||
| 2123 | swdd->WriteMonoRGBAPixels = write_monocolor_pixels_RGB; |
||
| 2124 | swdd->ReadRGBASpan = read_rgba_span3; |
||
| 2125 | swdd->ReadRGBAPixels = read_rgba_pixels3; |
||
| 2126 | } |
||
| 2127 | else if (osmesa->format == OSMESA_BGR) { |
||
| 2128 | swdd->WriteRGBASpan = write_rgba_span_BGR; |
||
| 2129 | swdd->WriteRGBSpan = write_rgb_span_BGR; |
||
| 2130 | swdd->WriteMonoRGBASpan = write_monocolor_span_BGR; |
||
| 2131 | swdd->WriteRGBAPixels = write_rgba_pixels_BGR; |
||
| 2132 | swdd->WriteMonoRGBAPixels = write_monocolor_pixels_BGR; |
||
| 2133 | swdd->ReadRGBASpan = read_rgba_span3; |
||
| 2134 | swdd->ReadRGBAPixels = read_rgba_pixels3; |
||
| 2135 | } |
||
| 2136 | else if (osmesa->format == OSMESA_RGB_565) { |
||
| 2137 | swdd->WriteRGBASpan = write_rgba_span2; |
||
| 2138 | swdd->WriteRGBSpan = write_rgb_span2; |
||
| 2139 | swdd->WriteMonoRGBASpan = write_monocolor_span2; |
||
| 2140 | swdd->WriteRGBAPixels = write_rgba_pixels2; |
||
| 2141 | swdd->WriteMonoRGBAPixels = write_monocolor_pixels2; |
||
| 2142 | swdd->ReadRGBASpan = read_rgba_span2; |
||
| 2143 | swdd->ReadRGBAPixels = read_rgba_pixels2; |
||
| 2144 | } |
||
| 2145 | else { |
||
| 2146 | /* 4 GLchan / pixel in frame buffer */ |
||
| 2147 | swdd->WriteRGBSpan = write_rgb_span; |
||
| 2148 | swdd->WriteRGBAPixels = write_rgba_pixels; |
||
| 2149 | swdd->WriteMonoRGBASpan = write_monocolor_span; |
||
| 2150 | swdd->WriteMonoRGBAPixels = write_monocolor_pixels; |
||
| 2151 | if (osmesa->format == OSMESA_RGBA && |
||
| 2152 | CHAN_TYPE == GL_UNSIGNED_BYTE && |
||
| 2153 | RCOMP==0 && GCOMP==1 && BCOMP==2 && ACOMP==3) { |
||
| 2154 | /* special, fast case */ |
||
| 2155 | swdd->WriteRGBASpan = write_rgba_span_rgba; |
||
| 2156 | swdd->ReadRGBASpan = read_rgba_span_rgba; |
||
| 2157 | } |
||
| 2158 | else { |
||
| 2159 | swdd->WriteRGBASpan = write_rgba_span; |
||
| 2160 | swdd->ReadRGBASpan = read_rgba_span; |
||
| 2161 | } |
||
| 2162 | swdd->ReadRGBAPixels = read_rgba_pixels; |
||
| 2163 | } |
||
| 2164 | |||
| 2165 | /* CI span/pixel functions */ |
||
| 2166 | swdd->WriteCI32Span = write_index32_span; |
||
| 2167 | swdd->WriteCI8Span = write_index8_span; |
||
| 2168 | swdd->WriteMonoCISpan = write_monoindex_span; |
||
| 2169 | swdd->WriteCI32Pixels = write_index_pixels; |
||
| 2170 | swdd->WriteMonoCIPixels = write_monoindex_pixels; |
||
| 2171 | swdd->ReadCI32Span = read_index_span; |
||
| 2172 | swdd->ReadCI32Pixels = read_index_pixels; |
||
| 2173 | |||
| 2174 | tnl->Driver.RunPipeline = _tnl_run_pipeline; |
||
| 2175 | |||
| 2176 | _swrast_InvalidateState( ctx, new_state ); |
||
| 2177 | _swsetup_InvalidateState( ctx, new_state ); |
||
| 2178 | _ac_InvalidateState( ctx, new_state ); |
||
| 2179 | _tnl_InvalidateState( ctx, new_state ); |
||
| 2180 | } |