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/* $Id: histogram.c,v 1.1 2003-02-28 11:42:02 pj Exp $ */
/*
* Mesa 3-D graphics library
* Version: 3.5
*
* Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "glheader.h"
#include "colormac.h"
#include "context.h"
#include "image.h"
#include "histogram.h"
#include "mmath.h"
/*
* XXX the packed pixel formats haven't been tested.
*/
static void
pack_histogram( GLcontext *ctx,
GLuint n, CONST GLuint rgba[][4],
GLenum format, GLenum type, GLvoid *destination,
const struct gl_pixelstore_attrib *packing )
{
const GLint comps = _mesa_components_in_format(format);
GLuint luminance[MAX_WIDTH];
if (format == GL_LUMINANCE || format == GL_LUMINANCE_ALPHA) {
GLuint i;
for (i = 0; i < n; i++) {
luminance[i] = rgba[i][RCOMP] + rgba[i][GCOMP] + rgba[i][BCOMP];
}
}
#define PACK_MACRO(TYPE) \
{ \
GLuint i; \
switch (format) { \
case GL_RED: \
for (i=0;i<n;i++) \
dst[i] = (TYPE) rgba[i][RCOMP]; \
break; \
case GL_GREEN: \
for (i=0;i<n;i++) \
dst[i] = (TYPE) rgba[i][GCOMP]; \
break; \
case GL_BLUE: \
for (i=0;i<n;i++) \
dst[i] = (TYPE) rgba[i][BCOMP]; \
break; \
case GL_ALPHA: \
for (i=0;i<n;i++) \
dst[i] = (TYPE) rgba[i][ACOMP]; \
break; \
case GL_LUMINANCE: \
for (i=0;i<n;i++) \
dst[i] = (TYPE) luminance[i]; \
break; \
case GL_LUMINANCE_ALPHA: \
for (i=0;i<n;i++) { \
dst[i*2+0] = (TYPE) luminance[i]; \
dst[i*2+1] = (TYPE) rgba[i][ACOMP]; \
} \
break; \
case GL_RGB: \
for (i=0;i<n;i++) { \
dst[i*3+0] = (TYPE) rgba[i][RCOMP]; \
dst[i*3+1] = (TYPE) rgba[i][GCOMP]; \
dst[i*3+2] = (TYPE) rgba[i][BCOMP]; \
} \
break; \
case GL_RGBA: \
for (i=0;i<n;i++) { \
dst[i*4+0] = (TYPE) rgba[i][RCOMP]; \
dst[i*4+1] = (TYPE) rgba[i][GCOMP]; \
dst[i*4+2] = (TYPE) rgba[i][BCOMP]; \
dst[i*4+3] = (TYPE) rgba[i][ACOMP]; \
} \
break; \
case GL_BGR: \
for (i=0;i<n;i++) { \
dst[i*3+0] = (TYPE) rgba[i][BCOMP]; \
dst[i*3+1] = (TYPE) rgba[i][GCOMP]; \
dst[i*3+2] = (TYPE) rgba[i][RCOMP]; \
} \
break; \
case GL_BGRA: \
for (i=0;i<n;i++) { \
dst[i*4+0] = (TYPE) rgba[i][BCOMP]; \
dst[i*4+1] = (TYPE) rgba[i][GCOMP]; \
dst[i*4+2] = (TYPE) rgba[i][RCOMP]; \
dst[i*4+3] = (TYPE) rgba[i][ACOMP]; \
} \
break; \
case GL_ABGR_EXT: \
for (i=0;i<n;i++) { \
dst[i*4+0] = (TYPE) rgba[i][ACOMP]; \
dst[i*4+1] = (TYPE) rgba[i][BCOMP]; \
dst[i*4+2] = (TYPE) rgba[i][GCOMP]; \
dst[i*4+3] = (TYPE) rgba[i][RCOMP]; \
} \
break; \
default: \
_mesa_problem(ctx, "bad format in pack_histogram"); \
} \
}
switch (type) {
case GL_UNSIGNED_BYTE:
{
GLubyte *dst = (GLubyte *) destination;
PACK_MACRO(GLubyte);
}
break;
case GL_BYTE:
{
GLbyte *dst = (GLbyte *) destination;
PACK_MACRO(GLbyte);
}
break;
case GL_UNSIGNED_SHORT:
{
GLushort *dst = (GLushort *) destination;
PACK_MACRO(GLushort);
if (packing->SwapBytes) {
_mesa_swap2(dst, n * comps);
}
}
break;
case GL_SHORT:
{
GLshort *dst = (GLshort *) destination;
PACK_MACRO(GLshort);
if (packing->SwapBytes) {
_mesa_swap2((GLushort *) dst, n * comps);
}
}
break;
case GL_UNSIGNED_INT:
{
GLuint *dst = (GLuint *) destination;
PACK_MACRO(GLuint);
if (packing->SwapBytes) {
_mesa_swap4(dst, n * comps);
}
}
break;
case GL_INT:
{
GLint *dst = (GLint *) destination;
PACK_MACRO(GLint);
if (packing->SwapBytes) {
_mesa_swap4((GLuint *) dst, n * comps);
}
}
break;
case GL_FLOAT:
{
GLfloat *dst = (GLfloat *) destination;
PACK_MACRO(GLfloat);
if (packing->SwapBytes) {
_mesa_swap4((GLuint *) dst, n * comps);
}
}
break;
case GL_UNSIGNED_BYTE_3_3_2:
if (format == GL_RGB) {
GLubyte *dst = (GLubyte *) destination;
GLuint i;
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][RCOMP] & 0x7) << 5)
| ((rgba[i][GCOMP] & 0x7) << 2)
| ((rgba[i][BCOMP] & 0x3) );
}
}
else {
GLubyte *dst = (GLubyte *) destination;
GLuint i;
ASSERT(format == GL_BGR);
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][BCOMP] & 0x7) << 5)
| ((rgba[i][GCOMP] & 0x7) << 2)
| ((rgba[i][RCOMP] & 0x3) );
}
}
break;
case GL_UNSIGNED_BYTE_2_3_3_REV:
if (format == GL_RGB) {
GLubyte *dst = (GLubyte *) destination;
GLuint i;
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][RCOMP] & 0x3) << 6)
| ((rgba[i][GCOMP] & 0x7) << 3)
| ((rgba[i][BCOMP] & 0x7) );
}
}
else {
GLubyte *dst = (GLubyte *) destination;
GLuint i;
ASSERT(format == GL_BGR);
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][BCOMP] & 0x3) << 6)
| ((rgba[i][GCOMP] & 0x7) << 3)
| ((rgba[i][RCOMP] & 0x7) );
}
}
break;
case GL_UNSIGNED_SHORT_5_6_5:
if (format == GL_RGB) {
GLushort *dst = (GLushort *) destination;
GLuint i;
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][RCOMP] & 0x1f) << 11)
| ((rgba[i][GCOMP] & 0x3f) << 5)
| ((rgba[i][BCOMP] & 0x1f) );
}
}
else {
GLushort *dst = (GLushort *) destination;
GLuint i;
ASSERT(format == GL_BGR);
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][BCOMP] & 0x1f) << 11)
| ((rgba[i][GCOMP] & 0x3f) << 5)
| ((rgba[i][RCOMP] & 0x1f) );
}
}
break;
case GL_UNSIGNED_SHORT_5_6_5_REV:
if (format == GL_RGB) {
GLushort *dst = (GLushort *) destination;
GLuint i;
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][BCOMP] & 0x1f) << 11)
| ((rgba[i][GCOMP] & 0x3f) << 5)
| ((rgba[i][RCOMP] & 0x1f) );
}
}
else {
GLushort *dst = (GLushort *) destination;
GLuint i;
ASSERT(format == GL_BGR);
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][RCOMP] & 0x1f) << 11)
| ((rgba[i][GCOMP] & 0x3f) << 5)
| ((rgba[i][BCOMP] & 0x1f) );
}
}
break;
case GL_UNSIGNED_SHORT_4_4_4_4:
if (format == GL_RGBA) {
GLushort *dst = (GLushort *) destination;
GLuint i;
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][RCOMP] & 0xf) << 12)
| ((rgba[i][GCOMP] & 0xf) << 8)
| ((rgba[i][BCOMP] & 0xf) << 4)
| ((rgba[i][ACOMP] & 0xf) );
}
}
else if (format == GL_BGRA) {
GLushort *dst = (GLushort *) destination;
GLuint i;
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][BCOMP] & 0xf) << 12)
| ((rgba[i][GCOMP] & 0xf) << 8)
| ((rgba[i][RCOMP] & 0xf) << 4)
| ((rgba[i][ACOMP] & 0xf) );
}
}
else {
GLushort *dst = (GLushort *) destination;
GLuint i;
ASSERT(format == GL_ABGR_EXT);
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][ACOMP] & 0xf) << 12)
| ((rgba[i][BCOMP] & 0xf) << 8)
| ((rgba[i][GCOMP] & 0xf) << 4)
| ((rgba[i][RCOMP] & 0xf) );
}
}
break;
case GL_UNSIGNED_SHORT_4_4_4_4_REV:
if (format == GL_RGBA) {
GLushort *dst = (GLushort *) destination;
GLuint i;
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][ACOMP] & 0xf) << 12)
| ((rgba[i][BCOMP] & 0xf) << 8)
| ((rgba[i][GCOMP] & 0xf) << 4)
| ((rgba[i][RCOMP] & 0xf) );
}
}
else if (format == GL_BGRA) {
GLushort *dst = (GLushort *) destination;
GLuint i;
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][ACOMP] & 0xf) << 12)
| ((rgba[i][RCOMP] & 0xf) << 8)
| ((rgba[i][GCOMP] & 0xf) << 4)
| ((rgba[i][BCOMP] & 0xf) );
}
}
else {
GLushort *dst = (GLushort *) destination;
GLuint i;
ASSERT(format == GL_ABGR_EXT);
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][RCOMP] & 0xf) << 12)
| ((rgba[i][GCOMP] & 0xf) << 8)
| ((rgba[i][BCOMP] & 0xf) << 4)
| ((rgba[i][ACOMP] & 0xf) );
}
}
break;
case GL_UNSIGNED_SHORT_5_5_5_1:
if (format == GL_RGBA) {
GLushort *dst = (GLushort *) destination;
GLuint i;
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][RCOMP] & 0x1f) << 11)
| ((rgba[i][GCOMP] & 0x1f) << 6)
| ((rgba[i][BCOMP] & 0x1f) << 1)
| ((rgba[i][ACOMP] & 0x1) );
}
}
else if (format == GL_BGRA) {
GLushort *dst = (GLushort *) destination;
GLuint i;
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][BCOMP] & 0x1f) << 11)
| ((rgba[i][GCOMP] & 0x1f) << 6)
| ((rgba[i][RCOMP] & 0x1f) << 1)
| ((rgba[i][ACOMP] & 0x1) );
}
}
else {
GLushort *dst = (GLushort *) destination;
GLuint i;
ASSERT(format == GL_ABGR_EXT);
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][ACOMP] & 0x1f) << 11)
| ((rgba[i][BCOMP] & 0x1f) << 6)
| ((rgba[i][GCOMP] & 0x1f) << 1)
| ((rgba[i][RCOMP] & 0x1) );
}
}
break;
case GL_UNSIGNED_SHORT_1_5_5_5_REV:
if (format == GL_RGBA) {
GLushort *dst = (GLushort *) destination;
GLuint i;
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][ACOMP] & 0x1f) << 11)
| ((rgba[i][BCOMP] & 0x1f) << 6)
| ((rgba[i][GCOMP] & 0x1f) << 1)
| ((rgba[i][RCOMP] & 0x1) );
}
}
else if (format == GL_BGRA) {
GLushort *dst = (GLushort *) destination;
GLuint i;
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][ACOMP] & 0x1f) << 11)
| ((rgba[i][RCOMP] & 0x1f) << 6)
| ((rgba[i][GCOMP] & 0x1f) << 1)
| ((rgba[i][BCOMP] & 0x1) );
}
}
else {
GLushort *dst = (GLushort *) destination;
GLuint i;
ASSERT(format == GL_ABGR_EXT);
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][RCOMP] & 0x1f) << 11)
| ((rgba[i][GCOMP] & 0x1f) << 6)
| ((rgba[i][BCOMP] & 0x1f) << 1)
| ((rgba[i][ACOMP] & 0x1) );
}
}
break;
case GL_UNSIGNED_INT_8_8_8_8:
if (format == GL_RGBA) {
GLuint *dst = (GLuint *) destination;
GLuint i;
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][RCOMP] & 0xff) << 24)
| ((rgba[i][GCOMP] & 0xff) << 16)
| ((rgba[i][BCOMP] & 0xff) << 8)
| ((rgba[i][ACOMP] & 0xff) );
}
}
else if (format == GL_BGRA) {
GLuint *dst = (GLuint *) destination;
GLuint i;
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][BCOMP] & 0xff) << 24)
| ((rgba[i][GCOMP] & 0xff) << 16)
| ((rgba[i][RCOMP] & 0xff) << 8)
| ((rgba[i][ACOMP] & 0xff) );
}
}
else {
GLuint *dst = (GLuint *) destination;
GLuint i;
ASSERT(format == GL_ABGR_EXT);
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][ACOMP] & 0xff) << 24)
| ((rgba[i][BCOMP] & 0xff) << 16)
| ((rgba[i][GCOMP] & 0xff) << 8)
| ((rgba[i][RCOMP] & 0xff) );
}
}
break;
case GL_UNSIGNED_INT_8_8_8_8_REV:
if (format == GL_RGBA) {
GLuint *dst = (GLuint *) destination;
GLuint i;
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][ACOMP] & 0xff) << 24)
| ((rgba[i][BCOMP] & 0xff) << 16)
| ((rgba[i][GCOMP] & 0xff) << 8)
| ((rgba[i][RCOMP] & 0xff) );
}
}
else if (format == GL_BGRA) {
GLuint *dst = (GLuint *) destination;
GLuint i;
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][ACOMP] & 0xff) << 24)
| ((rgba[i][RCOMP] & 0xff) << 16)
| ((rgba[i][GCOMP] & 0xff) << 8)
| ((rgba[i][BCOMP] & 0xff) );
}
}
else {
GLuint *dst = (GLuint *) destination;
GLuint i;
ASSERT(format == GL_ABGR_EXT);
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][RCOMP] & 0xff) << 24)
| ((rgba[i][GCOMP] & 0xff) << 16)
| ((rgba[i][BCOMP] & 0xff) << 8)
| ((rgba[i][ACOMP] & 0xff) );
}
}
break;
case GL_UNSIGNED_INT_10_10_10_2:
if (format == GL_RGBA) {
GLuint *dst = (GLuint *) destination;
GLuint i;
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][RCOMP] & 0x3ff) << 22)
| ((rgba[i][GCOMP] & 0x3ff) << 12)
| ((rgba[i][BCOMP] & 0x3ff) << 2)
| ((rgba[i][ACOMP] & 0x3) );
}
}
else if (format == GL_BGRA) {
GLuint *dst = (GLuint *) destination;
GLuint i;
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][BCOMP] & 0x3ff) << 22)
| ((rgba[i][GCOMP] & 0x3ff) << 12)
| ((rgba[i][RCOMP] & 0x3ff) << 2)
| ((rgba[i][ACOMP] & 0x3) );
}
}
else {
GLuint *dst = (GLuint *) destination;
GLuint i;
ASSERT(format == GL_ABGR_EXT);
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][ACOMP] & 0x3ff) << 22)
| ((rgba[i][BCOMP] & 0x3ff) << 12)
| ((rgba[i][GCOMP] & 0x3ff) << 2)
| ((rgba[i][RCOMP] & 0x3) );
}
}
break;
case GL_UNSIGNED_INT_2_10_10_10_REV:
if (format == GL_RGBA) {
GLuint *dst = (GLuint *) destination;
GLuint i;
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][ACOMP] & 0x3ff) << 22)
| ((rgba[i][BCOMP] & 0x3ff) << 12)
| ((rgba[i][GCOMP] & 0x3ff) << 2)
| ((rgba[i][RCOMP] & 0x3) );
}
}
else if (format == GL_BGRA) {
GLuint *dst = (GLuint *) destination;
GLuint i;
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][ACOMP] & 0x3ff) << 22)
| ((rgba[i][RCOMP] & 0x3ff) << 12)
| ((rgba[i][GCOMP] & 0x3ff) << 2)
| ((rgba[i][BCOMP] & 0x3) );
}
}
else {
GLuint *dst = (GLuint *) destination;
GLuint i;
ASSERT(format == GL_ABGR_EXT);
for (i = 0; i < n; i++) {
dst[i] = ((rgba[i][RCOMP] & 0x3ff) << 22)
| ((rgba[i][GCOMP] & 0x3ff) << 12)
| ((rgba[i][BCOMP] & 0x3ff) << 2)
| ((rgba[i][ACOMP] & 0x3) );
}
}
break;
default:
_mesa_problem(ctx, "Bad type in pack_histogram");
}
#undef PACK_MACRO
}
/*
* Given an internalFormat token passed to glHistogram or glMinMax,
* return the corresponding base format.
* Return -1 if invalid token.
*/
static GLint
base_histogram_format( GLenum format )
{
switch (format) {
case GL_ALPHA:
case GL_ALPHA4:
case GL_ALPHA8:
case GL_ALPHA12:
case GL_ALPHA16:
return GL_ALPHA;
case GL_LUMINANCE:
case GL_LUMINANCE4:
case GL_LUMINANCE8:
case GL_LUMINANCE12:
case GL_LUMINANCE16:
return GL_LUMINANCE;
case GL_LUMINANCE_ALPHA:
case GL_LUMINANCE4_ALPHA4:
case GL_LUMINANCE6_ALPHA2:
case GL_LUMINANCE8_ALPHA8:
case GL_LUMINANCE12_ALPHA4:
case GL_LUMINANCE12_ALPHA12:
case GL_LUMINANCE16_ALPHA16:
return GL_LUMINANCE_ALPHA;
case GL_RGB:
case GL_R3_G3_B2:
case GL_RGB4:
case GL_RGB5:
case GL_RGB8:
case GL_RGB10:
case GL_RGB12:
case GL_RGB16:
return GL_RGB;
case GL_RGBA:
case GL_RGBA2:
case GL_RGBA4:
case GL_RGB5_A1:
case GL_RGBA8:
case GL_RGB10_A2:
case GL_RGBA12:
case GL_RGBA16:
return GL_RGBA;
default:
return -1; /* error */
}
}
void
_mesa_GetMinmax(GLenum target, GLboolean reset, GLenum format, GLenum type, GLvoid *values)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetMinmax");
return;
}
if (target != GL_MINMAX) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetMinmax(target)");
return;
}
if (!_mesa_is_legal_format_and_type(format, type)) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetMinmax(format or type)");
return;
}
if (type != GL_UNSIGNED_BYTE &&
type != GL_BYTE &&
type != GL_UNSIGNED_SHORT &&
type != GL_SHORT &&
type != GL_UNSIGNED_INT &&
type != GL_INT &&
type != GL_FLOAT &&
type != GL_UNSIGNED_BYTE_3_3_2 &&
type != GL_UNSIGNED_BYTE_2_3_3_REV &&
type != GL_UNSIGNED_SHORT_5_6_5 &&
type != GL_UNSIGNED_SHORT_5_6_5_REV &&
type != GL_UNSIGNED_SHORT_4_4_4_4 &&
type != GL_UNSIGNED_SHORT_4_4_4_4_REV &&
type != GL_UNSIGNED_SHORT_5_5_5_1 &&
type != GL_UNSIGNED_SHORT_1_5_5_5_REV &&
type != GL_UNSIGNED_INT_8_8_8_8 &&
type != GL_UNSIGNED_INT_8_8_8_8_REV &&
type != GL_UNSIGNED_INT_10_10_10_2 &&
type != GL_UNSIGNED_INT_2_10_10_10_REV) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetMinmax(type)");
return;
}
if (!values)
return;
{
GLfloat minmax[2][4];
minmax[0][RCOMP] = CLAMP(ctx->MinMax.Min[RCOMP], 0.0F, 1.0F);
minmax[0][GCOMP] = CLAMP(ctx->MinMax.Min[GCOMP], 0.0F, 1.0F);
minmax[0][BCOMP] = CLAMP(ctx->MinMax.Min[BCOMP], 0.0F, 1.0F);
minmax[0][ACOMP] = CLAMP(ctx->MinMax.Min[ACOMP], 0.0F, 1.0F);
minmax[1][RCOMP] = CLAMP(ctx->MinMax.Max[RCOMP], 0.0F, 1.0F);
minmax[1][GCOMP] = CLAMP(ctx->MinMax.Max[GCOMP], 0.0F, 1.0F);
minmax[1][BCOMP] = CLAMP(ctx->MinMax.Max[BCOMP], 0.0F, 1.0F);
minmax[1][ACOMP] = CLAMP(ctx->MinMax.Max[ACOMP], 0.0F, 1.0F);
_mesa_pack_float_rgba_span(ctx, 2, (CONST GLfloat (*)[4]) minmax,
format, type, values, &ctx->Pack, 0);
}
if (reset) {
_mesa_ResetMinmax(GL_MINMAX);
}
}
void
_mesa_GetHistogram(GLenum target, GLboolean reset, GLenum format, GLenum type, GLvoid *values)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetHistogram");
return;
}
if (target != GL_HISTOGRAM) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetHistogram(target)");
return;
}
if (!_mesa_is_legal_format_and_type(format, type)) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetHistogram(format or type)");
return;
}
if (type != GL_UNSIGNED_BYTE &&
type != GL_BYTE &&
type != GL_UNSIGNED_SHORT &&
type != GL_SHORT &&
type != GL_UNSIGNED_INT &&
type != GL_INT &&
type != GL_FLOAT &&
type != GL_UNSIGNED_BYTE_3_3_2 &&
type != GL_UNSIGNED_BYTE_2_3_3_REV &&
type != GL_UNSIGNED_SHORT_5_6_5 &&
type != GL_UNSIGNED_SHORT_5_6_5_REV &&
type != GL_UNSIGNED_SHORT_4_4_4_4 &&
type != GL_UNSIGNED_SHORT_4_4_4_4_REV &&
type != GL_UNSIGNED_SHORT_5_5_5_1 &&
type != GL_UNSIGNED_SHORT_1_5_5_5_REV &&
type != GL_UNSIGNED_INT_8_8_8_8 &&
type != GL_UNSIGNED_INT_8_8_8_8_REV &&
type != GL_UNSIGNED_INT_10_10_10_2 &&
type != GL_UNSIGNED_INT_2_10_10_10_REV) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetHistogram(type)");
return;
}
if (!values)
return;
pack_histogram(ctx, ctx->Histogram.Width,
(CONST GLuint (*)[4]) ctx->Histogram.Count,
format, type, values, &ctx->Pack);
if (reset) {
GLuint i;
for (i = 0; i < HISTOGRAM_TABLE_SIZE; i++) {
ctx->Histogram.Count[i][0] = 0;
ctx->Histogram.Count[i][1] = 0;
ctx->Histogram.Count[i][2] = 0;
ctx->Histogram.Count[i][3] = 0;
}
}
}
void
_mesa_GetHistogramParameterfv(GLenum target, GLenum pname, GLfloat *params)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetHistogramParameterfv");
return;
}
if (target != GL_HISTOGRAM && target != GL_PROXY_HISTOGRAM) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetHistogramParameterfv(target)");
return;
}
switch (pname) {
case GL_HISTOGRAM_WIDTH:
*params = (GLfloat) ctx->Histogram.Width;
break;
case GL_HISTOGRAM_FORMAT:
*params = (GLfloat) ctx->Histogram.Format;
break;
case GL_HISTOGRAM_RED_SIZE:
*params = (GLfloat) ctx->Histogram.RedSize;
break;
case GL_HISTOGRAM_GREEN_SIZE:
*params = (GLfloat) ctx->Histogram.GreenSize;
break;
case GL_HISTOGRAM_BLUE_SIZE:
*params = (GLfloat) ctx->Histogram.BlueSize;
break;
case GL_HISTOGRAM_ALPHA_SIZE:
*params = (GLfloat) ctx->Histogram.AlphaSize;
break;
case GL_HISTOGRAM_LUMINANCE_SIZE:
*params = (GLfloat) ctx->Histogram.LuminanceSize;
break;
case GL_HISTOGRAM_SINK:
*params = (GLfloat) ctx->Histogram.Sink;
break;
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glGetHistogramParameterfv(pname)");
}
}
void
_mesa_GetHistogramParameteriv(GLenum target, GLenum pname, GLint *params)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetHistogramParameteriv");
return;
}
if (target != GL_HISTOGRAM && target != GL_PROXY_HISTOGRAM) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetHistogramParameteriv(target)");
return;
}
switch (pname) {
case GL_HISTOGRAM_WIDTH:
*params = (GLint) ctx->Histogram.Width;
break;
case GL_HISTOGRAM_FORMAT:
*params = (GLint) ctx->Histogram.Format;
break;
case GL_HISTOGRAM_RED_SIZE:
*params = (GLint) ctx->Histogram.RedSize;
break;
case GL_HISTOGRAM_GREEN_SIZE:
*params = (GLint) ctx->Histogram.GreenSize;
break;
case GL_HISTOGRAM_BLUE_SIZE:
*params = (GLint) ctx->Histogram.BlueSize;
break;
case GL_HISTOGRAM_ALPHA_SIZE:
*params = (GLint) ctx->Histogram.AlphaSize;
break;
case GL_HISTOGRAM_LUMINANCE_SIZE:
*params = (GLint) ctx->Histogram.LuminanceSize;
break;
case GL_HISTOGRAM_SINK:
*params = (GLint) ctx->Histogram.Sink;
break;
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glGetHistogramParameteriv(pname)");
}
}
void
_mesa_GetMinmaxParameterfv(GLenum target, GLenum pname, GLfloat *params)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetMinmaxParameterfv");
return;
}
if (target != GL_MINMAX) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetMinmaxParameterfv(target)");
return;
}
if (pname == GL_MINMAX_FORMAT) {
*params = (GLfloat) ctx->MinMax.Format;
}
else if (pname == GL_MINMAX_SINK) {
*params = (GLfloat) ctx->MinMax.Sink;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetMinMaxParameterfv(pname)");
}
}
void
_mesa_GetMinmaxParameteriv(GLenum target, GLenum pname, GLint *params)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glGetMinmaxParameteriv");
return;
}
if (target != GL_MINMAX) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetMinmaxParameteriv(target)");
return;
}
if (pname == GL_MINMAX_FORMAT) {
*params = (GLint) ctx->MinMax.Format;
}
else if (pname == GL_MINMAX_SINK) {
*params = (GLint) ctx->MinMax.Sink;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetMinMaxParameteriv(pname)");
}
}
void
_mesa_Histogram(GLenum target, GLsizei width, GLenum internalFormat, GLboolean sink)
{
GLuint i;
GLboolean error = GL_FALSE;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* sideeffects */
if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glHistogram");
return;
}
if (target != GL_HISTOGRAM && target != GL_PROXY_HISTOGRAM) {
_mesa_error(ctx, GL_INVALID_ENUM, "glHistogram(target)");
return;
}
if (width < 0 || width > HISTOGRAM_TABLE_SIZE) {
if (target == GL_PROXY_HISTOGRAM) {
error = GL_TRUE;
}
else {
if (width < 0)
_mesa_error(ctx, GL_INVALID_VALUE, "glHistogram(width)");
else
_mesa_error(ctx, GL_TABLE_TOO_LARGE, "glHistogram(width)");
return;
}
}
if (width != 0 && _mesa_bitcount(width) != 1) {
if (target == GL_PROXY_HISTOGRAM) {
error = GL_TRUE;
}
else {
_mesa_error(ctx, GL_INVALID_VALUE, "glHistogram(width)");
return;
}
}
if (base_histogram_format(internalFormat) < 0) {
if (target == GL_PROXY_HISTOGRAM) {
error = GL_TRUE;
}
else {
_mesa_error(ctx, GL_INVALID_ENUM, "glHistogram(internalFormat)");
return;
}
}
/* reset histograms */
for (i = 0; i < HISTOGRAM_TABLE_SIZE; i++) {
ctx->Histogram.Count[i][0] = 0;
ctx->Histogram.Count[i][1] = 0;
ctx->Histogram.Count[i][2] = 0;
ctx->Histogram.Count[i][3] = 0;
}
if (error) {
ctx->Histogram.Width = 0;
ctx->Histogram.Format = 0;
ctx->Histogram.RedSize = 0;
ctx->Histogram.GreenSize = 0;
ctx->Histogram.BlueSize = 0;
ctx->Histogram.AlphaSize = 0;
ctx->Histogram.LuminanceSize = 0;
}
else {
ctx->Histogram.Width = width;
ctx->Histogram.Format = internalFormat;
ctx->Histogram.Sink = sink;
ctx->Histogram.RedSize = 8 * sizeof(GLuint);
ctx->Histogram.GreenSize = 8 * sizeof(GLuint);
ctx->Histogram.BlueSize = 8 * sizeof(GLuint);
ctx->Histogram.AlphaSize = 8 * sizeof(GLuint);
ctx->Histogram.LuminanceSize = 8 * sizeof(GLuint);
}
ctx->NewState |= _NEW_PIXEL;
}
void
_mesa_Minmax(GLenum target, GLenum internalFormat, GLboolean sink)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glMinmax");
return;
}
if (target != GL_MINMAX) {
_mesa_error(ctx, GL_INVALID_ENUM, "glMinMax(target)");
return;
}
if (base_histogram_format(internalFormat) < 0) {
_mesa_error(ctx, GL_INVALID_ENUM, "glMinMax(internalFormat)");
return;
}
if (ctx->MinMax.Sink == sink)
return;
FLUSH_VERTICES(ctx, _NEW_PIXEL);
ctx->MinMax.Sink = sink;
}
void
_mesa_ResetHistogram(GLenum target)
{
GLuint i;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); /* sideeffects */
if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glResetHistogram");
return;
}
if (target != GL_HISTOGRAM) {
_mesa_error(ctx, GL_INVALID_ENUM, "glResetHistogram(target)");
return;
}
for (i = 0; i < HISTOGRAM_TABLE_SIZE; i++) {
ctx->Histogram.Count[i][0] = 0;
ctx->Histogram.Count[i][1] = 0;
ctx->Histogram.Count[i][2] = 0;
ctx->Histogram.Count[i][3] = 0;
}
ctx->NewState |= _NEW_PIXEL;
}
void
_mesa_ResetMinmax(GLenum target)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (!ctx->Extensions.EXT_histogram && !ctx->Extensions.ARB_imaging) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glResetMinmax");
return;
}
if (target != GL_MINMAX) {
_mesa_error(ctx, GL_INVALID_ENUM, "glResetMinMax(target)");
return;
}
ctx->MinMax.Min[RCOMP] = 1000; ctx->MinMax.Max[RCOMP] = -1000;
ctx->MinMax.Min[GCOMP] = 1000; ctx->MinMax.Max[GCOMP] = -1000;
ctx->MinMax.Min[BCOMP] = 1000; ctx->MinMax.Max[BCOMP] = -1000;
ctx->MinMax.Min[ACOMP] = 1000; ctx->MinMax.Max[ACOMP] = -1000;
ctx->NewState |= _NEW_PIXEL;
}