WebSVN - shark - Blame - Rev 1618 - /shark/branches/xen/ports/mesa/src/array_cache/ac

Rev	Author	Line No.	Line
57	pj	1	/* $Id: ac_import.c,v 1.1 2003-02-28 11:49:40 pj Exp $ */
		2
		3	/*
		4	* Mesa 3-D graphics library
		5	* Version: 4.1
		6	*
		7	* Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
		8	*
		9	* Permission is hereby granted, free of charge, to any person obtaining a
		10	* copy of this software and associated documentation files (the "Software"),
		11	* to deal in the Software without restriction, including without limitation
		12	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
		13	* and/or sell copies of the Software, and to permit persons to whom the
		14	* Software is furnished to do so, subject to the following conditions:
		15	*
		16	* The above copyright notice and this permission notice shall be included
		17	* in all copies or substantial portions of the Software.
		18	*
		19	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
		20	* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
		21	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
		22	* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
		23	* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
		24	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
		25	*
		26	* Authors:
		27	* Keith Whitwell <keith@tungstengraphics.com>
		28	*/
		29
		30	#include "glheader.h"
		31	#include "macros.h"
		32	#include "imports.h"
		33	#include "mmath.h"
		34	#include "mtypes.h"
		35
		36	#include "math/m_translate.h"
		37	#include "array_cache/ac_context.h"
		38	#include "math/m_translate.h"
		39
		40	#define STRIDE_ARRAY( array, offset ) \
		41	do { \
		42	char tmp = (char ) (array).Ptr; \
		43	tmp += (offset) * (array).StrideB; \
		44	(array).Ptr = tmp; \
		45	} while (0)
		46
		47	/* Set the array pointer back to its source when the cached data is
		48	* invalidated:
		49	*/
		50
		51	static void reset_texcoord( GLcontext *ctx, GLuint unit )
		52	{
		53	ACcontext *ac = AC_CONTEXT(ctx);
		54
		55	if (ctx->Array._Enabled & _NEW_ARRAY_TEXCOORD(unit)) {
		56	ac->Raw.TexCoord[unit] = ctx->Array.TexCoord[unit];
		57	STRIDE_ARRAY(ac->Raw.TexCoord[unit], ac->start);
		58	}
		59	else {
		60	ac->Raw.TexCoord[unit] = ac->Fallback.TexCoord[unit];
		61
		62	if (ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][3] != 1.0)
		63	ac->Raw.TexCoord[unit].Size = 4;
		64	else if (ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][2] != 0.0)
		65	ac->Raw.TexCoord[unit].Size = 3;
		66	else
		67	ac->Raw.TexCoord[unit].Size = 2;
		68	}
		69
		70	ac->IsCached.TexCoord[unit] = GL_FALSE;
		71	ac->NewArrayState &= ~_NEW_ARRAY_TEXCOORD(unit);
		72	}
		73
		74	static void reset_vertex( GLcontext *ctx )
		75	{
		76	ACcontext *ac = AC_CONTEXT(ctx);
		77	ASSERT(ctx->Array.Vertex.Enabled
		78	\|\| (ctx->VertexProgram.Enabled && ctx->Array.VertexAttrib[0].Enabled));
		79	ac->Raw.Vertex = ctx->Array.Vertex;
		80	STRIDE_ARRAY(ac->Raw.Vertex, ac->start);
		81	ac->IsCached.Vertex = GL_FALSE;
		82	ac->NewArrayState &= ~_NEW_ARRAY_VERTEX;
		83	}
		84
		85
		86	static void reset_normal( GLcontext *ctx )
		87	{
		88	ACcontext *ac = AC_CONTEXT(ctx);
		89
		90	if (ctx->Array._Enabled & _NEW_ARRAY_NORMAL) {
		91	ac->Raw.Normal = ctx->Array.Normal;
		92	STRIDE_ARRAY(ac->Raw.Normal, ac->start);
		93	}
		94	else {
		95	ac->Raw.Normal = ac->Fallback.Normal;
		96	}
		97
		98	ac->IsCached.Normal = GL_FALSE;
		99	ac->NewArrayState &= ~_NEW_ARRAY_NORMAL;
		100	}
		101
		102
		103	static void reset_color( GLcontext *ctx )
		104	{
		105	ACcontext *ac = AC_CONTEXT(ctx);
		106
		107
		108	if (ctx->Array._Enabled & _NEW_ARRAY_COLOR0) {
		109	ac->Raw.Color = ctx->Array.Color;
		110	STRIDE_ARRAY(ac->Raw.Color, ac->start);
		111	}
		112	else
		113	ac->Raw.Color = ac->Fallback.Color;
		114
		115	ac->IsCached.Color = GL_FALSE;
		116	ac->NewArrayState &= ~_NEW_ARRAY_COLOR0;
		117	}
		118
		119
		120	static void reset_secondarycolor( GLcontext *ctx )
		121	{
		122	ACcontext *ac = AC_CONTEXT(ctx);
		123
		124	if (ctx->Array._Enabled & _NEW_ARRAY_COLOR1) {
		125	ac->Raw.SecondaryColor = ctx->Array.SecondaryColor;
		126	STRIDE_ARRAY(ac->Raw.SecondaryColor, ac->start);
		127	}
		128	else
		129	ac->Raw.SecondaryColor = ac->Fallback.SecondaryColor;
		130
		131	ac->IsCached.SecondaryColor = GL_FALSE;
		132	ac->NewArrayState &= ~_NEW_ARRAY_COLOR1;
		133	}
		134
		135
		136	static void reset_index( GLcontext *ctx )
		137	{
		138	ACcontext *ac = AC_CONTEXT(ctx);
		139
		140	if (ctx->Array._Enabled & _NEW_ARRAY_INDEX) {
		141	ac->Raw.Index = ctx->Array.Index;
		142	STRIDE_ARRAY(ac->Raw.Index, ac->start);
		143	}
		144	else
		145	ac->Raw.Index = ac->Fallback.Index;
		146
		147	ac->IsCached.Index = GL_FALSE;
		148	ac->NewArrayState &= ~_NEW_ARRAY_INDEX;
		149	}
		150
		151
		152	static void reset_fogcoord( GLcontext *ctx )
		153	{
		154	ACcontext *ac = AC_CONTEXT(ctx);
		155
		156	if (ctx->Array._Enabled & _NEW_ARRAY_FOGCOORD) {
		157	ac->Raw.FogCoord = ctx->Array.FogCoord;
		158	STRIDE_ARRAY(ac->Raw.FogCoord, ac->start);
		159	}
		160	else
		161	ac->Raw.FogCoord = ac->Fallback.FogCoord;
		162
		163	ac->IsCached.FogCoord = GL_FALSE;
		164	ac->NewArrayState &= ~_NEW_ARRAY_FOGCOORD;
		165	}
		166
		167
		168	static void reset_edgeflag( GLcontext *ctx )
		169	{
		170	ACcontext *ac = AC_CONTEXT(ctx);
		171
		172	if (ctx->Array._Enabled & _NEW_ARRAY_EDGEFLAG) {
		173	ac->Raw.EdgeFlag = ctx->Array.EdgeFlag;
		174	STRIDE_ARRAY(ac->Raw.EdgeFlag, ac->start);
		175	}
		176	else
		177	ac->Raw.EdgeFlag = ac->Fallback.EdgeFlag;
		178
		179	ac->IsCached.EdgeFlag = GL_FALSE;
		180	ac->NewArrayState &= ~_NEW_ARRAY_EDGEFLAG;
		181	}
		182
		183
		184	static void reset_attrib( GLcontext *ctx, GLuint index )
		185	{
		186	ACcontext *ac = AC_CONTEXT(ctx);
		187	GLboolean fallback = GL_FALSE;
		188
		189	/*
		190	* The 16 NV vertex attribute arrays have top priority. If one of those
		191	* is not enabled, look if a corresponding conventional array is enabled.
		192	* If nothing else, use the fallback (ctx->Current.Attrib) values.
		193	*/
		194	if (ctx->Array._Enabled & _NEW_ARRAY_ATTRIB(index)) {
		195	ac->Raw.Attrib[index] = ctx->Array.VertexAttrib[index];
		196	STRIDE_ARRAY(ac->Raw.Attrib[index], ac->start);
		197	}
		198	else if (ctx->Array._Enabled & (1 << index)) {
		199	/* use conventional vertex array if possible */
		200	if (index == VERT_ATTRIB_POS) {
		201	ac->Raw.Attrib[index] = ctx->Array.Vertex;
		202	}
		203	else if (index == VERT_ATTRIB_NORMAL) {
		204	ac->Raw.Attrib[index] = ctx->Array.Normal;
		205	}
		206	else if (index == VERT_ATTRIB_COLOR0) {
		207	ac->Raw.Attrib[index] = ctx->Array.Color;
		208	}
		209	else if (index == VERT_ATTRIB_COLOR1) {
		210	ac->Raw.Attrib[index] = ctx->Array.SecondaryColor;
		211	}
		212	else if (index == VERT_ATTRIB_FOG) {
		213	ac->Raw.Attrib[index] = ctx->Array.FogCoord;
		214	}
		215	else if (index >= VERT_ATTRIB_TEX0 && index <= VERT_ATTRIB_TEX7) {
		216	GLuint unit = index - VERT_ATTRIB_TEX0;
		217	ASSERT(unit < MAX_TEXTURE_UNITS);
		218	ac->Raw.Attrib[index] = ctx->Array.TexCoord[unit];
		219	}
		220	else {
		221	/* missing conventional array (vertex weight, for example) */
		222	fallback = GL_TRUE;
		223	}
		224	if (!fallback)
		225	STRIDE_ARRAY(ac->Raw.Attrib[index], ac->start);
		226	}
		227	else {
		228	fallback = GL_TRUE;
		229	}
		230
		231	if (fallback) {
		232	/* fallback to ctx->Current.Attrib values */
		233	ac->Raw.Attrib[index] = ac->Fallback.Attrib[index];
		234
		235	if (ctx->Current.Attrib[index][3] != 1.0)
		236	ac->Raw.Attrib[index].Size = 4;
		237	else if (ctx->Current.Attrib[index][2] != 0.0)
		238	ac->Raw.Attrib[index].Size = 3;
		239	else
		240	ac->Raw.Attrib[index].Size = 2;
		241	}
		242
		243	ac->IsCached.Attrib[index] = GL_FALSE;
		244	ac->NewArrayState &= ~_NEW_ARRAY_ATTRIB(index);
		245	}
		246
		247
		248	/*
		249	* Generic import function for color data
		250	*/
		251	static void import( GLcontext *ctx,
		252	GLenum type,
		253	struct gl_client_array *to,
		254	struct gl_client_array *from )
		255	{
		256	ACcontext *ac = AC_CONTEXT(ctx);
		257
		258	if (type == 0)
		259	type = from->Type;
		260
		261	switch (type) {
		262	case GL_FLOAT:
		263	_math_trans_4f( (GLfloat (*)[4]) to->Ptr,
		264	from->Ptr,
		265	from->StrideB,
		266	from->Type,
		267	from->Size,
		268	0,
		269	ac->count - ac->start);
		270
		271	to->StrideB = 4 * sizeof(GLfloat);
		272	to->Type = GL_FLOAT;
		273	break;
		274
		275	case GL_UNSIGNED_BYTE:
		276	_math_trans_4ub( (GLubyte (*)[4]) to->Ptr,
		277	from->Ptr,
		278	from->StrideB,
		279	from->Type,
		280	from->Size,
		281	0,
		282	ac->count - ac->start);
		283
		284	to->StrideB = 4 * sizeof(GLubyte);
		285	to->Type = GL_UNSIGNED_BYTE;
		286	break;
		287
		288	case GL_UNSIGNED_SHORT:
		289	_math_trans_4us( (GLushort (*)[4]) to->Ptr,
		290	from->Ptr,
		291	from->StrideB,
		292	from->Type,
		293	from->Size,
		294	0,
		295	ac->count - ac->start);
		296
		297	to->StrideB = 4 * sizeof(GLushort);
		298	to->Type = GL_UNSIGNED_SHORT;
		299	break;
		300
		301	default:
		302	ASSERT(0);
		303	break;
		304	}
		305	}
		306
		307
		308
		309	/*
		310	* Functions to import array ranges with specified types and strides.
		311	* For example, if the vertex data is GLshort[2] and we want GLfloat[3]
		312	* we'll use an import function to do the data conversion.
		313	*/
		314
		315	static void import_texcoord( GLcontext *ctx, GLuint unit,
		316	GLenum type, GLuint stride )
		317	{
		318	ACcontext *ac = AC_CONTEXT(ctx);
		319	struct gl_client_array *from = &ac->Raw.TexCoord[unit];
		320	struct gl_client_array *to = &ac->Cache.TexCoord[unit];
		321
		322	ASSERT(unit < ctx->Const.MaxTextureUnits);
		323
		324	/* Limited choices at this stage:
		325	*/
		326	ASSERT(type == GL_FLOAT);
		327	ASSERT(stride == 4*sizeof(GLfloat) \|\| stride == 0);
		328	ASSERT(ac->count - ac->start < ctx->Const.MaxArrayLockSize);
		329
		330	_math_trans_4f( (GLfloat (*)[4]) to->Ptr,
		331	from->Ptr,
		332	from->StrideB,
		333	from->Type,
		334	from->Size,
		335	0,
		336	ac->count - ac->start);
		337
		338	to->Size = from->Size;
		339	to->StrideB = 4 * sizeof(GLfloat);
		340	to->Type = GL_FLOAT;
		341	ac->IsCached.TexCoord[unit] = GL_TRUE;
		342	}
		343
		344	static void import_vertex( GLcontext *ctx,
		345	GLenum type, GLuint stride )
		346	{
		347	ACcontext *ac = AC_CONTEXT(ctx);
		348	struct gl_client_array *from = &ac->Raw.Vertex;
		349	struct gl_client_array *to = &ac->Cache.Vertex;
		350
		351	/* Limited choices at this stage:
		352	*/
		353	ASSERT(type == GL_FLOAT);
		354	ASSERT(stride == 4*sizeof(GLfloat) \|\| stride == 0);
		355
		356	_math_trans_4f( (GLfloat (*)[4]) to->Ptr,
		357	from->Ptr,
		358	from->StrideB,
		359	from->Type,
		360	from->Size,
		361	0,
		362	ac->count - ac->start);
		363
		364	to->Size = from->Size;
		365	to->StrideB = 4 * sizeof(GLfloat);
		366	to->Type = GL_FLOAT;
		367	ac->IsCached.Vertex = GL_TRUE;
		368	}
		369
		370	static void import_normal( GLcontext *ctx,
		371	GLenum type, GLuint stride )
		372	{
		373	ACcontext *ac = AC_CONTEXT(ctx);
		374	struct gl_client_array *from = &ac->Raw.Normal;
		375	struct gl_client_array *to = &ac->Cache.Normal;
		376
		377	/* Limited choices at this stage:
		378	*/
		379	ASSERT(type == GL_FLOAT);
		380	ASSERT(stride == 3*sizeof(GLfloat) \|\| stride == 0);
		381
		382	_math_trans_3f( (GLfloat (*)[3]) to->Ptr,
		383	from->Ptr,
		384	from->StrideB,
		385	from->Type,
		386	0,
		387	ac->count - ac->start);
		388
		389	to->StrideB = 3 * sizeof(GLfloat);
		390	to->Type = GL_FLOAT;
		391	ac->IsCached.Normal = GL_TRUE;
		392	}
		393
		394	static void import_color( GLcontext *ctx,
		395	GLenum type, GLuint stride )
		396	{
		397	ACcontext *ac = AC_CONTEXT(ctx);
		398	struct gl_client_array *from = &ac->Raw.Color;
		399	struct gl_client_array *to = &ac->Cache.Color;
		400
		401	import( ctx, type, to, from );
		402
		403	ac->IsCached.Color = GL_TRUE;
		404	}
		405
		406	static void import_index( GLcontext *ctx,
		407	GLenum type, GLuint stride )
		408	{
		409	ACcontext *ac = AC_CONTEXT(ctx);
		410	struct gl_client_array *from = &ac->Raw.Index;
		411	struct gl_client_array *to = &ac->Cache.Index;
		412
		413	/* Limited choices at this stage:
		414	*/
		415	ASSERT(type == GL_UNSIGNED_INT);
		416	ASSERT(stride == sizeof(GLuint) \|\| stride == 0);
		417
		418	_math_trans_1ui( (GLuint *) to->Ptr,
		419	from->Ptr,
		420	from->StrideB,
		421	from->Type,
		422	0,
		423	ac->count - ac->start);
		424
		425	to->StrideB = sizeof(GLuint);
		426	to->Type = GL_UNSIGNED_INT;
		427	ac->IsCached.Index = GL_TRUE;
		428	}
		429
		430	static void import_secondarycolor( GLcontext *ctx,
		431	GLenum type, GLuint stride )
		432	{
		433	ACcontext *ac = AC_CONTEXT(ctx);
		434	struct gl_client_array *from = &ac->Raw.SecondaryColor;
		435	struct gl_client_array *to = &ac->Cache.SecondaryColor;
		436
		437	import( ctx, type, to, from );
		438
		439	ac->IsCached.SecondaryColor = GL_TRUE;
		440	}
		441
		442	static void import_fogcoord( GLcontext *ctx,
		443	GLenum type, GLuint stride )
		444	{
		445	ACcontext *ac = AC_CONTEXT(ctx);
		446	struct gl_client_array *from = &ac->Raw.FogCoord;
		447	struct gl_client_array *to = &ac->Cache.FogCoord;
		448
		449	/* Limited choices at this stage:
		450	*/
		451	ASSERT(type == GL_FLOAT);
		452	ASSERT(stride == sizeof(GLfloat) \|\| stride == 0);
		453
		454	_math_trans_1f( (GLfloat *) to->Ptr,
		455	from->Ptr,
		456	from->StrideB,
		457	from->Type,
		458	0,
		459	ac->count - ac->start);
		460
		461	to->StrideB = sizeof(GLfloat);
		462	to->Type = GL_FLOAT;
		463	ac->IsCached.FogCoord = GL_TRUE;
		464	}
		465
		466	static void import_edgeflag( GLcontext *ctx,
		467	GLenum type, GLuint stride )
		468	{
		469	ACcontext *ac = AC_CONTEXT(ctx);
		470	struct gl_client_array *from = &ac->Raw.EdgeFlag;
		471	struct gl_client_array *to = &ac->Cache.EdgeFlag;
		472
		473	/* Limited choices at this stage:
		474	*/
		475	ASSERT(type == GL_UNSIGNED_BYTE);
		476	ASSERT(stride == sizeof(GLubyte) \|\| stride == 0);
		477
		478	_math_trans_1ub( (GLubyte *) to->Ptr,
		479	from->Ptr,
		480	from->StrideB,
		481	from->Type,
		482	0,
		483	ac->count - ac->start);
		484
		485	to->StrideB = sizeof(GLubyte);
		486	to->Type = GL_UNSIGNED_BYTE;
		487	ac->IsCached.EdgeFlag = GL_TRUE;
		488	}
		489
		490	static void import_attrib( GLcontext *ctx, GLuint index,
		491	GLenum type, GLuint stride )
		492	{
		493	ACcontext *ac = AC_CONTEXT(ctx);
		494	struct gl_client_array *from = &ac->Raw.Attrib[index];
		495	struct gl_client_array *to = &ac->Cache.Attrib[index];
		496
		497	ASSERT(index < VERT_ATTRIB_MAX);
		498
		499	/* Limited choices at this stage:
		500	*/
		501	ASSERT(type == GL_FLOAT);
		502	ASSERT(stride == 4*sizeof(GLfloat) \|\| stride == 0);
		503	ASSERT(ac->count - ac->start < ctx->Const.MaxArrayLockSize);
		504
		505	_math_trans_4f( (GLfloat (*)[4]) to->Ptr,
		506	from->Ptr,
		507	from->StrideB,
		508	from->Type,
		509	from->Size,
		510	0,
		511	ac->count - ac->start);
		512
		513	to->Size = from->Size;
		514	to->StrideB = 4 * sizeof(GLfloat);
		515	to->Type = GL_FLOAT;
		516	ac->IsCached.Attrib[index] = GL_TRUE;
		517	}
		518
		519
		520
		521	/*
		522	* Externals to request arrays with specific properties:
		523	*/
		524
		525
		526	struct gl_client_array _ac_import_texcoord( GLcontext ctx,
		527	GLuint unit,
		528	GLenum type,
		529	GLuint reqstride,
		530	GLuint reqsize,
		531	GLboolean reqwriteable,
		532	GLboolean *writeable )
		533	{
		534	ACcontext *ac = AC_CONTEXT(ctx);
		535
		536	ASSERT(unit < ctx->Const.MaxTextureUnits);
		537
		538	/* Can we keep the existing version?
		539	*/
		540	if (ac->NewArrayState & _NEW_ARRAY_TEXCOORD(unit))
		541	reset_texcoord( ctx, unit );
		542
		543	/* Is the request impossible?
		544	*/
		545	if (reqsize != 0 && ac->Raw.TexCoord[unit].Size > (GLint) reqsize)
		546	return 0;
		547
		548	/* Do we need to pull in a copy of the client data:
		549	*/
		550	if (ac->Raw.TexCoord[unit].Type != type \|\|
		551	(reqstride != 0 && ac->Raw.TexCoord[unit].StrideB != (GLint)reqstride) \|\|
		552	reqwriteable)
		553	{
		554	if (!ac->IsCached.TexCoord[unit])
		555	import_texcoord(ctx, unit, type, reqstride );
		556	*writeable = GL_TRUE;
		557	return &ac->Cache.TexCoord[unit];
		558	}
		559	else {
		560	*writeable = GL_FALSE;
		561	return &ac->Raw.TexCoord[unit];
		562	}
		563	}
		564
		565	struct gl_client_array _ac_import_vertex( GLcontext ctx,
		566	GLenum type,
		567	GLuint reqstride,
		568	GLuint reqsize,
		569	GLboolean reqwriteable,
		570	GLboolean *writeable )
		571	{
		572	ACcontext *ac = AC_CONTEXT(ctx);
		573
		574	/* Can we keep the existing version?
		575	*/
		576	if (ac->NewArrayState & _NEW_ARRAY_VERTEX)
		577	reset_vertex( ctx );
		578
		579	/* Is the request impossible?
		580	*/
		581	if (reqsize != 0 && ac->Raw.Vertex.Size > (GLint) reqsize)
		582	return 0;
		583
		584	/* Do we need to pull in a copy of the client data:
		585	*/
		586	if (ac->Raw.Vertex.Type != type \|\|
		587	(reqstride != 0 && ac->Raw.Vertex.StrideB != (GLint) reqstride) \|\|
		588	reqwriteable)
		589	{
		590	if (!ac->IsCached.Vertex)
		591	import_vertex(ctx, type, reqstride );
		592	*writeable = GL_TRUE;
		593	return &ac->Cache.Vertex;
		594	}
		595	else {
		596	*writeable = GL_FALSE;
		597	return &ac->Raw.Vertex;
		598	}
		599	}
		600
		601	struct gl_client_array _ac_import_normal( GLcontext ctx,
		602	GLenum type,
		603	GLuint reqstride,
		604	GLboolean reqwriteable,
		605	GLboolean *writeable )
		606	{
		607	ACcontext *ac = AC_CONTEXT(ctx);
		608
		609	/* Can we keep the existing version?
		610	*/
		611	if (ac->NewArrayState & _NEW_ARRAY_NORMAL)
		612	reset_normal( ctx );
		613
		614	/* Do we need to pull in a copy of the client data:
		615	*/
		616	if (ac->Raw.Normal.Type != type \|\|
		617	(reqstride != 0 && ac->Raw.Normal.StrideB != (GLint) reqstride) \|\|
		618	reqwriteable)
		619	{
		620	if (!ac->IsCached.Normal)
		621	import_normal(ctx, type, reqstride );
		622	*writeable = GL_TRUE;
		623	return &ac->Cache.Normal;
		624	}
		625	else {
		626	*writeable = GL_FALSE;
		627	return &ac->Raw.Normal;
		628	}
		629	}
		630
		631	struct gl_client_array _ac_import_color( GLcontext ctx,
		632	GLenum type,
		633	GLuint reqstride,
		634	GLuint reqsize,
		635	GLboolean reqwriteable,
		636	GLboolean *writeable )
		637	{
		638	ACcontext *ac = AC_CONTEXT(ctx);
		639
		640	/* Can we keep the existing version?
		641	*/
		642	if (ac->NewArrayState & _NEW_ARRAY_COLOR0)
		643	reset_color( ctx );
		644
		645	/* Is the request impossible?
		646	*/
		647	if (reqsize != 0 && ac->Raw.Color.Size > (GLint) reqsize) {
		648	return 0;
		649	}
		650
		651	/* Do we need to pull in a copy of the client data:
		652	*/
		653	if ((type != 0 && ac->Raw.Color.Type != type) \|\|
		654	(reqstride != 0 && ac->Raw.Color.StrideB != (GLint) reqstride) \|\|
		655	reqwriteable)
		656	{
		657	if (!ac->IsCached.Color)
		658	import_color(ctx, type, reqstride );
		659	*writeable = GL_TRUE;
		660	return &ac->Cache.Color;
		661	}
		662	else {
		663	*writeable = GL_FALSE;
		664	return &ac->Raw.Color;
		665	}
		666	}
		667
		668	struct gl_client_array _ac_import_index( GLcontext ctx,
		669	GLenum type,
		670	GLuint reqstride,
		671	GLboolean reqwriteable,
		672	GLboolean *writeable )
		673	{
		674	ACcontext *ac = AC_CONTEXT(ctx);
		675
		676	/* Can we keep the existing version?
		677	*/
		678	if (ac->NewArrayState & _NEW_ARRAY_INDEX)
		679	reset_index( ctx );
		680
		681
		682	/* Do we need to pull in a copy of the client data:
		683	*/
		684	if (ac->Raw.Index.Type != type \|\|
		685	(reqstride != 0 && ac->Raw.Index.StrideB != (GLint) reqstride) \|\|
		686	reqwriteable)
		687	{
		688	if (!ac->IsCached.Index)
		689	import_index(ctx, type, reqstride );
		690	*writeable = GL_TRUE;
		691	return &ac->Cache.Index;
		692	}
		693	else {
		694	*writeable = GL_FALSE;
		695	return &ac->Raw.Index;
		696	}
		697	}
		698
		699	struct gl_client_array _ac_import_secondarycolor( GLcontext ctx,
		700	GLenum type,
		701	GLuint reqstride,
		702	GLuint reqsize,
		703	GLboolean reqwriteable,
		704	GLboolean *writeable )
		705	{
		706	ACcontext *ac = AC_CONTEXT(ctx);
		707
		708	/* Can we keep the existing version?
		709	*/
		710	if (ac->NewArrayState & _NEW_ARRAY_COLOR1)
		711	reset_secondarycolor( ctx );
		712
		713	/* Is the request impossible?
		714	*/
		715	if (reqsize != 0 && ac->Raw.SecondaryColor.Size > (GLint) reqsize)
		716	return 0;
		717
		718	/* Do we need to pull in a copy of the client data:
		719	*/
		720	if ((type != 0 && ac->Raw.SecondaryColor.Type != type) \|\|
		721	(reqstride != 0 && ac->Raw.SecondaryColor.StrideB != (GLint)reqstride) \|\|
		722	reqwriteable)
		723	{
		724	if (!ac->IsCached.SecondaryColor)
		725	import_secondarycolor(ctx, type, reqstride );
		726	*writeable = GL_TRUE;
		727	return &ac->Cache.SecondaryColor;
		728	}
		729	else {
		730	*writeable = GL_FALSE;
		731	return &ac->Raw.SecondaryColor;
		732	}
		733	}
		734
		735	struct gl_client_array _ac_import_fogcoord( GLcontext ctx,
		736	GLenum type,
		737	GLuint reqstride,
		738	GLboolean reqwriteable,
		739	GLboolean *writeable )
		740	{
		741	ACcontext *ac = AC_CONTEXT(ctx);
		742
		743	/* Can we keep the existing version?
		744	*/
		745	if (ac->NewArrayState & _NEW_ARRAY_FOGCOORD)
		746	reset_fogcoord( ctx );
		747
		748	/* Do we need to pull in a copy of the client data:
		749	*/
		750	if (ac->Raw.FogCoord.Type != type \|\|
		751	(reqstride != 0 && ac->Raw.FogCoord.StrideB != (GLint) reqstride) \|\|
		752	reqwriteable)
		753	{
		754	if (!ac->IsCached.FogCoord)
		755	import_fogcoord(ctx, type, reqstride );
		756	*writeable = GL_TRUE;
		757	return &ac->Cache.FogCoord;
		758	}
		759	else {
		760	*writeable = GL_FALSE;
		761	return &ac->Raw.FogCoord;
		762	}
		763	}
		764
		765	struct gl_client_array _ac_import_edgeflag( GLcontext ctx,
		766	GLenum type,
		767	GLuint reqstride,
		768	GLboolean reqwriteable,
		769	GLboolean *writeable )
		770	{
		771	ACcontext *ac = AC_CONTEXT(ctx);
		772
		773	/* Can we keep the existing version?
		774	*/
		775	if (ac->NewArrayState & _NEW_ARRAY_EDGEFLAG)
		776	reset_edgeflag( ctx );
		777
		778	/* Do we need to pull in a copy of the client data:
		779	*/
		780	if (ac->Raw.EdgeFlag.Type != type \|\|
		781	(reqstride != 0 && ac->Raw.EdgeFlag.StrideB != (GLint) reqstride) \|\|
		782	reqwriteable)
		783	{
		784	if (!ac->IsCached.EdgeFlag)
		785	import_edgeflag(ctx, type, reqstride );
		786	*writeable = GL_TRUE;
		787	return &ac->Cache.EdgeFlag;
		788	}
		789	else {
		790	*writeable = GL_FALSE;
		791	return &ac->Raw.EdgeFlag;
		792	}
		793	}
		794
		795	/* GL_NV_vertex_program */
		796	struct gl_client_array _ac_import_attrib( GLcontext ctx,
		797	GLuint index,
		798	GLenum type,
		799	GLuint reqstride,
		800	GLuint reqsize,
		801	GLboolean reqwriteable,
		802	GLboolean *writeable )
		803	{
		804	ACcontext *ac = AC_CONTEXT(ctx);
		805
		806	ASSERT(index < VERT_ATTRIB_MAX);
		807
		808	/* Can we keep the existing version?
		809	*/
		810	if (ac->NewArrayState & _NEW_ARRAY_ATTRIB(index)) {
		811	reset_attrib( ctx, index );
		812	}
		813	else if (ac->NewArrayState & (1 << index)) {
		814	/* Also need to check conventional attributes */
		815	reset_attrib( ctx, index );
		816	}
		817
		818	/* Is the request impossible?
		819	*/
		820	if (reqsize != 0 && ac->Raw.Attrib[index].Size > (GLint) reqsize)
		821	return NULL;
		822
		823	/* Do we need to pull in a copy of the client data:
		824	*/
		825	if (ac->Raw.Attrib[index].Type != type \|\|
		826	(reqstride != 0 && ac->Raw.Attrib[index].StrideB != (GLint)reqstride) \|\|
		827	reqwriteable)
		828	{
		829	if (!ac->IsCached.Attrib[index])
		830	import_attrib(ctx, index, type, reqstride );
		831	*writeable = GL_TRUE;
		832	return &ac->Cache.Attrib[index];
		833	}
		834	else {
		835	*writeable = GL_FALSE;
		836	return &ac->Raw.Attrib[index];
		837	}
		838	}
		839
		840
		841	/* Clients must call this function to validate state and set bounds
		842	* before importing any data:
		843	*/
		844	void _ac_import_range( GLcontext *ctx, GLuint start, GLuint count )
		845	{
		846	ACcontext *ac = AC_CONTEXT(ctx);
		847
		848	if (!ctx->Array.LockCount) {
		849	/* Not locked, discard cached data. Changes to lock
		850	* status are caught via. _ac_invalidate_state().
		851	*/
		852	ac->NewArrayState = _NEW_ARRAY_ALL;
		853	ac->start = start;
		854	ac->count = count;
		855	}
		856	else {
		857	/* Locked, discard data for any disabled arrays. Require that
		858	* the whole locked range always be dealt with, otherwise hard to
		859	* maintain cached data in the face of clipping.
		860	*/
		861	ac->NewArrayState \|= ~ctx->Array._Enabled;
		862	ac->start = ctx->Array.LockFirst;
		863	ac->count = ctx->Array.LockCount;
		864	ASSERT(ac->start == start); /* hmm? */
		865	ASSERT(ac->count == count);
		866	}
		867	}
		868
		869
		870
		871	/* Additional convienence function for importing the element list
		872	* for glDrawElements() and glDrawRangeElements().
		873	*/
		874	CONST void *
		875	_ac_import_elements( GLcontext *ctx,
		876	GLenum new_type,
		877	GLuint count,
		878	GLenum old_type,
		879	CONST void *indices )
		880	{
		881	ACcontext *ac = AC_CONTEXT(ctx);
		882
		883	if (old_type == new_type)
		884	return indices;
		885
		886	if (ac->elt_size < count * sizeof(GLuint)) {
		887	if (ac->Elts) FREE(ac->Elts);
		888	while (ac->elt_size < count * sizeof(GLuint))
		889	ac->elt_size *= 2;
		890	ac->Elts = (GLuint *) MALLOC(ac->elt_size);
		891	}
		892
		893	switch (new_type) {
		894	case GL_UNSIGNED_BYTE:
		895	ASSERT(0);
		896	return 0;
		897	case GL_UNSIGNED_SHORT:
		898	ASSERT(0);
		899	return 0;
		900	case GL_UNSIGNED_INT: {
		901	GLuint out = (GLuint )ac->Elts;
		902	GLuint i;
		903
		904	switch (old_type) {
		905	case GL_UNSIGNED_BYTE: {
		906	CONST GLubyte in = (CONST GLubyte )indices;
		907	for (i = 0 ; i < count ; i++)
		908	out[i] = in[i];
		909	break;
		910	}
		911	case GL_UNSIGNED_SHORT: {
		912	CONST GLushort in = (CONST GLushort )indices;
		913	for (i = 0 ; i < count ; i++)
		914	out[i] = in[i];
		915	break;
		916	}
		917	default:
		918	ASSERT(0);
		919	}
		920
		921	return (CONST void *)out;
		922	}
		923	default:
		924	ASSERT(0);
		925	break;
		926	}
		927
		928	return 0;
		929	}

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(root)/shark/branches/xen/ports/mesa/src/array_cache/ac_import.c - Rev 1618