/* $XFree86: xc/lib/GL/glx/vertarr.c,v 1.4 2001/03/25 05:32:00 tsi Exp $ */
/*
** License Applicability. Except to the extent portions of this file are
** made subject to an alternative license as permitted in the SGI Free
** Software License B, Version 1.1 (the "License"), the contents of this
** file are subject only to the provisions of the License. You may not use
** this file except in compliance with the License. You may obtain a copy
** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
**
** http://oss.sgi.com/projects/FreeB
**
** Note that, as provided in the License, the Software is distributed on an
** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
**
** Original Code. The Original Code is: OpenGL Sample Implementation,
** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
** Copyright in any portions created by third parties is as indicated
** elsewhere herein. All Rights Reserved.
**
** Additional Notice Provisions: The application programming interfaces
** established by SGI in conjunction with the Original Code are The
** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
** Window System(R) (Version 1.3), released October 19, 1998. This software
** was created using the OpenGL(R) version 1.2.1 Sample Implementation
** published by SGI, but has not been independently verified as being
** compliant with the OpenGL(R) version 1.2.1 Specification.
**
*/
#include <assert.h>
#include "glxclient.h"
#include "packrender.h"
#include "indirect.h"
#include <string.h>
#include <limits.h> /* INT_MAX */
/* macros for setting function pointers */
#define __GL_VERTEX_FUNC(NAME, let) \
case GL_##NAME: \
if (size == 2) \
vertexPointer->proc = (void (*)(const void *))__indirect_glVertex2##let##v; \
else if (size == 3) \
vertexPointer->proc = (void (*)(const void *))__indirect_glVertex3##let##v; \
else if (size == 4) \
vertexPointer->proc = (void (*)(const void *))__indirect_glVertex4##let##v; \
break
#define __GL_NORMAL_FUNC(NAME, let) \
case GL_##NAME: \
normalPointer->proc = (void (*)(const void *))__indirect_glNormal3##let##v; \
break
#define __GL_COLOR_FUNC(NAME, let) \
case GL_##NAME: \
if (size == 3) \
colorPointer->proc = (void (*)(const void *))__indirect_glColor3##let##v; \
else if (size == 4)\
colorPointer->proc = (void (*)(const void *))__indirect_glColor4##let##v; \
break
#define __GL_SEC_COLOR_FUNC(NAME, let) \
case GL_##NAME: \
seccolorPointer->proc = (void (*)(const void *))__indirect_glSecondaryColor3##let##vEXT; \
#define __GL_FOG_FUNC(NAME, let) \
case GL_##NAME: \
fogPointer->proc = (void (*)(const void *))__indirect_glFogCoord##let##vEXT; \
#define __GL_INDEX_FUNC(NAME, let) \
case GL_##NAME: \
indexPointer->proc = (void (*)(const void *))__indirect_glIndex##let##v; \
break
#define __GL_TEXTURE_FUNC(NAME, let) \
case GL_##NAME: \
if (size == 1) { \
texCoordPointer->proc = (void (*)(const void *))__indirect_glTexCoord1##let##v; \
texCoordPointer->mtex_proc = (void (*)(GLenum, const void *))__indirect_glMultiTexCoord1##let##vARB; \
} else if (size == 2) { \
texCoordPointer->proc = (void (*)(const void *))__indirect_glTexCoord2##let##v; \
texCoordPointer->mtex_proc = (void (*)(GLenum, const void *))__indirect_glMultiTexCoord2##let##vARB; \
} else if (size == 3) { \
texCoordPointer->proc = (void (*)(const void *))__indirect_glTexCoord3##let##v; \
texCoordPointer->mtex_proc = (void (*)(GLenum, const void *))__indirect_glMultiTexCoord2##let##vARB; \
} else if (size == 4) { \
texCoordPointer->proc = (void (*)(const void *))__indirect_glTexCoord4##let##v; \
texCoordPointer->mtex_proc = (void (*)(GLenum, const void *))__indirect_glMultiTexCoord4##let##vARB; \
} break
/**
* Table of sizes, in bytes, of a GL types. All of the type enums are be in
* the range 0x1400 - 0x140F. That includes types added by extensions (i.e.,
* \c GL_HALF_FLOAT_NV). This elements of this table correspond to the
* type enums masked with 0x0f.
*
* \notes
* \c GL_HAVE_FLOAT_NV is not included. Neither are \c GL_2_BYTES,
* \c GL_3_BYTES, or \c GL_4_BYTES.
*/
static const GLuint __glXTypeSize_table[16] = {
1, 1, 2, 2, 4, 4, 4, 0, 0, 0, 8, 0, 0, 0, 0, 0
};
#define __glXTypeSize(e) ((((e) & ~0x0f) != 0x1400) \
? 0 : __glXTypeSize_table[ (e) & 0x0f ])
/**
* Initialize vertex array state for a GLX context.
*
* \param gc GLX context whose vertex array state is to be initialized.
*
* \todo
* Someone is going to have to check the spec. This function takes greate
* care to initialize the \c size and \c type fields to "correct" values
* for each array. I'm not sure this is necessary. I think it should be
* acceptable to just \c memset the whole \c arrays and \c texCoord arrays
* to zero and be done with it. The spec may say something to the contrary,
* however.
*/
void __glXInitVertexArrayState(__GLXcontext *gc)
{
__GLXattribute * state = (__GLXattribute *)(gc->client_state_private);
__GLXvertArrayState *va = &state->vertArray;
GLint i;
va->enables = 0;
va->texture_enables = 0;
for ( i = 0 ; i < __GLX_MAX_ARRAYS ; i++ ) {
va->arrays[ i ].proc = NULL;
va->arrays[ i ].skip = 0;
va->arrays[ i ].ptr = 0;
va->arrays[ i ].size = 1;
va->arrays[ i ].type = GL_FLOAT;
va->arrays[ i ].stride = 0;
}
va->arrays[ edgeFlag_ARRAY ].type = GL_UNSIGNED_BYTE;;
va->arrays[ secondaryColor_ARRAY ].size = 3;
va->arrays[ color_ARRAY ].size = 4;
va->arrays[ normal_ARRAY ].size = 3;
va->arrays[ vertex_ARRAY ].size = 4;
for ( i = 0 ; i < __GLX_MAX_TEXTURE_UNITS ; i++ ) {
va->texCoord[ i ].proc = NULL;
va->texCoord[ i ].skip = 0;
va->texCoord[ i ].ptr = 0;
va->texCoord[ i ].size = 4;
va->texCoord[ i ].type = GL_FLOAT;
va->texCoord[ i ].stride = 0;
}
va->maxElementsVertices = INT_MAX;
va->maxElementsIndices = INT_MAX;
}
/*****************************************************************************/
/**
* \name Vertex array pointer bridge functions
*
* When EXT_vertex_array was moved into the core GL spec, the \c count
* parameter was lost. This libGL really only wants to implement the GL 1.1
* version, but we need to support applications that were written to the old
* interface. These bridge functions are part of the glue that makes this
* happen.
*/
/*@{*/
void __indirect_glColorPointerEXT(GLint size, GLenum type, GLsizei stride,
GLsizei count, const GLvoid * pointer )
{
(void) count; __indirect_glColorPointer( size, type, stride, pointer );
}
void __indirect_glEdgeFlagPointerEXT(GLsizei stride,
GLsizei count, const GLboolean * pointer )
{
(void) count; __indirect_glEdgeFlagPointer( stride, pointer );
}
void __indirect_glIndexPointerEXT(GLenum type, GLsizei stride,
GLsizei count, const GLvoid * pointer )
{
(void) count; __indirect_glIndexPointer( type, stride, pointer );
}
void __indirect_glNormalPointerEXT(GLenum type, GLsizei stride, GLsizei count,
const GLvoid * pointer )
{
(void) count; __indirect_glNormalPointer( type, stride, pointer );
}
void __indirect_glTexCoordPointerEXT(GLint size, GLenum type, GLsizei stride,
GLsizei count, const GLvoid * pointer )
{
(void) count; __indirect_glTexCoordPointer( size, type, stride, pointer );
}
void __indirect_glVertexPointerEXT(GLint size, GLenum type, GLsizei stride,
GLsizei count, const GLvoid * pointer )
{
(void) count; __indirect_glVertexPointer( size, type, stride, pointer );
}
/*@}*/
/*****************************************************************************/
void __indirect_glVertexPointer(GLint size, GLenum type, GLsizei stride,
const GLvoid *pointer)
{
__GLXcontext *gc = __glXGetCurrentContext();
__GLXattribute * state = (__GLXattribute *)(gc->client_state_private);
__GLXvertexArrayPointerState *vertexPointer = &state->vertArray.arrays[ vertex_ARRAY ];
/* Check arguments */
if (size < 2 || size > 4 || stride < 0) {
__glXSetError(gc, GL_INVALID_VALUE);
return;
}
/* Choose appropriate api proc */
switch(type) {
__GL_VERTEX_FUNC(SHORT, s);
__GL_VERTEX_FUNC(INT, i);
__GL_VERTEX_FUNC(FLOAT, f);
__GL_VERTEX_FUNC(DOUBLE, d);
default:
__glXSetError(gc, GL_INVALID_ENUM);
return;
}
vertexPointer->size = size;
vertexPointer->type = type;
vertexPointer->stride = stride;
vertexPointer->ptr = pointer;
/* Set internal state */
if (stride == 0) {
vertexPointer->skip = __glXTypeSize(type) * size;
} else {
vertexPointer->skip = stride;
}
}
void __indirect_glNormalPointer(GLenum type, GLsizei stride, const GLvoid *pointer)
{
__GLXcontext *gc = __glXGetCurrentContext();
__GLXattribute * state = (__GLXattribute *)(gc->client_state_private);
__GLXvertexArrayPointerState *normalPointer = &state->vertArray.arrays[ normal_ARRAY ];
/* Check arguments */
if (stride < 0) {
__glXSetError(gc, GL_INVALID_VALUE);
return;
}
/* Choose appropriate api proc */
switch(type) {
__GL_NORMAL_FUNC(BYTE, b);
__GL_NORMAL_FUNC(SHORT, s);
__GL_NORMAL_FUNC(INT, i);
__GL_NORMAL_FUNC(FLOAT, f);
__GL_NORMAL_FUNC(DOUBLE, d);
default:
__glXSetError(gc, GL_INVALID_ENUM);
return;
}
normalPointer->type = type;
normalPointer->stride = stride;
normalPointer->ptr = pointer;
/* Set internal state */
if (stride == 0) {
normalPointer->skip = 3 * __glXTypeSize(type);
} else {
normalPointer->skip = stride;
}
}
void __indirect_glColorPointer(GLint size, GLenum type, GLsizei stride,
const GLvoid *pointer)
{
__GLXcontext *gc = __glXGetCurrentContext();
__GLXattribute * state = (__GLXattribute *)(gc->client_state_private);
__GLXvertexArrayPointerState *colorPointer = &state->vertArray.arrays[ color_ARRAY ];
/* Check arguments */
if (stride < 0) {
__glXSetError(gc, GL_INVALID_VALUE);
return;
}
/* Choose appropriate api proc */
switch(type) {
__GL_COLOR_FUNC(BYTE, b);
__GL_COLOR_FUNC(UNSIGNED_BYTE, ub);
__GL_COLOR_FUNC(SHORT, s);
__GL_COLOR_FUNC(UNSIGNED_SHORT, us);
__GL_COLOR_FUNC(INT, i);
__GL_COLOR_FUNC(UNSIGNED_INT, ui);
__GL_COLOR_FUNC(FLOAT, f);
__GL_COLOR_FUNC(DOUBLE, d);
default:
__glXSetError(gc, GL_INVALID_ENUM);
return;
}
colorPointer->size = size;
colorPointer->type = type;
colorPointer->stride = stride;
colorPointer->ptr = pointer;
/* Set internal state */
if (stride == 0) {
colorPointer->skip = size * __glXTypeSize(type);
} else {
colorPointer->skip = stride;
}
}
void __indirect_glIndexPointer(GLenum type, GLsizei stride, const GLvoid *pointer)
{
__GLXcontext *gc = __glXGetCurrentContext();
__GLXattribute * state = (__GLXattribute *)(gc->client_state_private);
__GLXvertexArrayPointerState *indexPointer = &state->vertArray.arrays[ index_ARRAY ];
/* Check arguments */
if (stride < 0) {
__glXSetError(gc, GL_INVALID_VALUE);
return;
}
/* Choose appropriate api proc */
switch(type) {
__GL_INDEX_FUNC(UNSIGNED_BYTE, ub);
__GL_INDEX_FUNC(SHORT, s);
__GL_INDEX_FUNC(INT, i);
__GL_INDEX_FUNC(FLOAT, f);
__GL_INDEX_FUNC(DOUBLE, d);
default:
__glXSetError(gc, GL_INVALID_ENUM);
return;
}
indexPointer->type = type;
indexPointer->stride = stride;
indexPointer->ptr = pointer;
/* Set internal state */
if (stride == 0) {
indexPointer->skip = __glXTypeSize(type);
} else {
indexPointer->skip = stride;
}
}
void __indirect_glTexCoordPointer(GLint size, GLenum type, GLsizei stride,
const GLvoid *pointer)
{
__GLXcontext *gc = __glXGetCurrentContext();
__GLXattribute * state = (__GLXattribute *)(gc->client_state_private);
__GLXvertexArrayPointerState *texCoordPointer =
&state->vertArray.texCoord[state->vertArray.activeTexture];
/* Check arguments */
if (size < 1 || size > 4 || stride < 0) {
__glXSetError(gc, GL_INVALID_VALUE);
return;
}
/* Choose appropriate api proc */
switch(type) {
__GL_TEXTURE_FUNC(SHORT, s);
__GL_TEXTURE_FUNC(INT, i);
__GL_TEXTURE_FUNC(FLOAT, f);
__GL_TEXTURE_FUNC(DOUBLE, d);
default:
__glXSetError(gc, GL_INVALID_ENUM);
return;
}
texCoordPointer->size = size;
texCoordPointer->type = type;
texCoordPointer->stride = stride;
texCoordPointer->ptr = pointer;
/* Set internal state */
if (stride == 0) {
texCoordPointer->skip = __glXTypeSize(type) * size;
} else {
texCoordPointer->skip = stride;
}
}
void __indirect_glEdgeFlagPointer(GLsizei stride, const GLvoid *pointer)
{
__GLXcontext *gc = __glXGetCurrentContext();
__GLXattribute * state = (__GLXattribute *)(gc->client_state_private);
__GLXvertexArrayPointerState *edgeFlagPointer = &state->vertArray.arrays[ edgeFlag_ARRAY ];
/* Check arguments */
if (stride < 0) {
__glXSetError(gc, GL_INVALID_VALUE);
return;
}
/* Choose appropriate api proc */
edgeFlagPointer->proc = (void (*)(const void *))__indirect_glEdgeFlagv;
edgeFlagPointer->stride = stride;
edgeFlagPointer->ptr = pointer;
/* Set internal state */
if (stride == 0) {
edgeFlagPointer->skip = sizeof(GLboolean);
} else {
edgeFlagPointer->skip = stride;
}
}
void __indirect_glSecondaryColorPointerEXT(GLint size, GLenum type, GLsizei stride,
const GLvoid * pointer )
{
__GLXcontext *gc = __glXGetCurrentContext();
__GLXattribute * state = (__GLXattribute *)(gc->client_state_private);
__GLXvertexArrayPointerState *seccolorPointer = &state->vertArray.arrays[ secondaryColor_ARRAY ];
/* Check arguments */
if ( (stride < 0) || (size != 3) ) {
__glXSetError(gc, GL_INVALID_VALUE);
return;
}
/* Choose appropriate api proc */
switch(type) {
__GL_SEC_COLOR_FUNC(BYTE, b);
__GL_SEC_COLOR_FUNC(UNSIGNED_BYTE, ub);
__GL_SEC_COLOR_FUNC(SHORT, s);
__GL_SEC_COLOR_FUNC(UNSIGNED_SHORT, us);
__GL_SEC_COLOR_FUNC(INT, i);
__GL_SEC_COLOR_FUNC(UNSIGNED_INT, ui);
__GL_SEC_COLOR_FUNC(FLOAT, f);
__GL_SEC_COLOR_FUNC(DOUBLE, d);
default:
__glXSetError(gc, GL_INVALID_ENUM);
return;
}
seccolorPointer->size = size;
seccolorPointer->type = type;
seccolorPointer->stride = stride;
seccolorPointer->ptr = pointer;
/* Set internal state */
if (stride == 0) {
seccolorPointer->skip = size * __glXTypeSize(type);
} else {
seccolorPointer->skip = stride;
}
}
void __indirect_glFogCoordPointerEXT(GLenum type, GLsizei stride, const GLvoid * pointer)
{
__GLXcontext *gc = __glXGetCurrentContext();
__GLXattribute * state = (__GLXattribute *)(gc->client_state_private);
__GLXvertexArrayPointerState *fogPointer = &state->vertArray.arrays[ fogCoord_ARRAY ];
/* Check arguments */
if (stride < 0) {
__glXSetError(gc, GL_INVALID_VALUE);
return;
}
/* Choose appropriate api proc */
switch(type) {
__GL_FOG_FUNC(FLOAT, f);
__GL_FOG_FUNC(DOUBLE, d);
default:
__glXSetError(gc, GL_INVALID_ENUM);
return;
}
fogPointer->size = 1;
fogPointer->type = type;
fogPointer->stride = stride;
fogPointer->ptr = pointer;
/* Set internal state */
if (stride == 0) {
fogPointer->skip = __glXTypeSize(type);
} else {
fogPointer->skip = stride;
}
}
void __indirect_glInterleavedArrays(GLenum format, GLsizei stride, const GLvoid *pointer)
{
__GLXcontext *gc = __glXGetCurrentContext();
__GLXattribute * state = (__GLXattribute *)(gc->client_state_private);
GLboolean tEnable = GL_FALSE, cEnable = GL_FALSE, nEnable = GL_FALSE;
GLenum tType = GL_FLOAT, nType = GL_FLOAT, vType = GL_FLOAT;
GLenum cType = GL_FALSE;
GLint tSize = 0, cSize = 0, nSize = 3, vSize;
int cOffset = 0, nOffset = 0, vOffset = 0;
GLint trueStride, size;
switch (format) {
case GL_V2F:
vSize = 2;
size = __glXTypeSize(vType) * vSize;
break;
case GL_V3F:
vSize = 3;
size = __glXTypeSize(vType) * vSize;
break;
case GL_C4UB_V2F:
cEnable = GL_TRUE;
cSize = 4;
cType = GL_UNSIGNED_BYTE;
vSize = 2;
vOffset = __glXTypeSize(cType) * cSize;
size = vOffset + __glXTypeSize(vType) * vSize;
break;
case GL_C4UB_V3F:
cEnable = GL_TRUE;
cSize = 4;
cType = GL_UNSIGNED_BYTE;
vSize = 3;
vOffset = __glXTypeSize(vType) * cSize;
size = vOffset + __glXTypeSize(vType) * vSize;
break;
case GL_C3F_V3F:
cEnable = GL_TRUE;
cSize = 3;
cType = GL_FLOAT;
vSize = 3;
vOffset = __glXTypeSize(cType) * cSize;
size = vOffset + __glXTypeSize(vType) * vSize;
break;
case GL_N3F_V3F:
nEnable = GL_TRUE;
vSize = 3;
vOffset = __glXTypeSize(nType) * nSize;
size = vOffset + __glXTypeSize(vType) * vSize;
break;
case GL_C4F_N3F_V3F:
cEnable = GL_TRUE;
cSize = 4;
cType = GL_FLOAT;
nEnable = GL_TRUE;
nOffset = __glXTypeSize(cType) * cSize;
vSize = 3;
vOffset = nOffset + __glXTypeSize(nType) * nSize;
size = vOffset + __glXTypeSize(vType) * vSize;
break;
case GL_T2F_V3F:
tEnable = GL_TRUE;
tSize = 2;
vSize = 3;
vOffset = __glXTypeSize(tType) * tSize;
size = vOffset + __glXTypeSize(vType) * vSize;
break;
case GL_T4F_V4F:
tEnable = GL_TRUE;
tSize = 4;
vSize = 4;
vOffset = __glXTypeSize(tType) * tSize;
size = vOffset + __glXTypeSize(vType) * vSize;
break;
case GL_T2F_C4UB_V3F:
tEnable = GL_TRUE;
tSize = 2;
cEnable = GL_TRUE;
cSize = 4;
cType = GL_UNSIGNED_BYTE;
cOffset = __glXTypeSize(tType) * tSize;
vSize = 3;
vOffset = cOffset + __glXTypeSize(cType) * cSize;
size = vOffset + __glXTypeSize(vType) * vSize;
break;
case GL_T2F_C3F_V3F:
tEnable = GL_TRUE;
tSize = 2;
cEnable = GL_TRUE;
cSize = 3;
cType = GL_FLOAT;
cOffset = __glXTypeSize(tType) * tSize;
vSize = 3;
vOffset = cOffset + __glXTypeSize(cType) * cSize;
size = vOffset + __glXTypeSize(vType) * vSize;
break;
case GL_T2F_N3F_V3F:
tEnable = GL_TRUE;
tSize = 2;
nEnable = GL_TRUE;
nOffset = __glXTypeSize(tType) * tSize;
vSize = 3;
vOffset = nOffset + __glXTypeSize(nType) * nSize;
size = vOffset + __glXTypeSize(vType) * vSize;
break;
case GL_T2F_C4F_N3F_V3F:
tEnable = GL_TRUE;
tSize = 2;
cEnable = GL_TRUE;
cSize = 4;
cType = GL_FLOAT;
cOffset = __glXTypeSize(tType) * tSize;
nEnable = GL_TRUE;
nOffset = cOffset + __glXTypeSize(cType) * cSize;
vSize = 3;
vOffset = nOffset + __glXTypeSize(nType) * nSize;
size = vOffset + __glXTypeSize(vType) * vSize;
break;
case GL_T4F_C4F_N3F_V4F:
tEnable = GL_TRUE;
tSize = 4;
cEnable = GL_TRUE;
cSize = 4;
cType = GL_FLOAT;
cOffset = __glXTypeSize(tType) * tSize;
nEnable = GL_TRUE;
nOffset = cOffset + __glXTypeSize(cType) * cSize;
vSize = 4;
vOffset = nOffset + __glXTypeSize(nType) * nSize;
size = vOffset + __glXTypeSize(vType) * vSize;
break;
default:
__glXSetError(gc, GL_INVALID_ENUM);
return;
}
trueStride = (stride == 0) ? size : stride;
state->vertArray.enables = 0;
state->vertArray.texture_enables = 0;
if (tEnable) {
__indirect_glEnableClientState(GL_TEXTURE_COORD_ARRAY);
__indirect_glTexCoordPointer(tSize, tType, trueStride, (const char *)pointer);
}
if (cEnable) {
__indirect_glEnableClientState(GL_COLOR_ARRAY);
__indirect_glColorPointer(cSize, cType, trueStride, (const char *)pointer+cOffset);
}
if (nEnable) {
__indirect_glEnableClientState(GL_NORMAL_ARRAY);
__indirect_glNormalPointer(nType, trueStride, (const char *)pointer+nOffset);
}
__indirect_glEnableClientState(GL_VERTEX_ARRAY);
__indirect_glVertexPointer(vSize, vType, trueStride, (const char *)pointer+vOffset);
}
/*****************************************************************************/
void __indirect_glArrayElement(GLint i)
{
__GLXcontext *gc = __glXGetCurrentContext();
__GLXattribute * state = (__GLXattribute *)(gc->client_state_private);
__GLXvertArrayState *va = &state->vertArray;
GLint j;
if (IS_TEXARRAY_ENABLED(state, 0)) {
(*va->texCoord[0].proc)(va->texCoord[0].ptr+i*va->texCoord[0].skip);
}
/* Multitexturing is handled specially because the protocol
* requires an extra parameter.
*/
for (j=1; j<__GLX_MAX_TEXTURE_UNITS; ++j) {
if (IS_TEXARRAY_ENABLED(state, j)) {
(*va->texCoord[j].mtex_proc)(GL_TEXTURE0 + j, va->texCoord[j].ptr+i*va->texCoord[j].skip);
}
}
for ( j = 0 ; j < __GLX_MAX_ARRAYS ; j++ ) {
if (IS_ARRAY_ENABLED_BY_INDEX(state, j)) {
(*va->arrays[ j ].proc)(va->arrays[ j ].ptr+i*va->arrays[ j ].skip);
}
}
}
struct array_info {
__GLXdispatchDrawArraysComponentHeader ai;
GLsizei bytes;
const GLubyte *ptr;
GLsizei skip;
};
/**
* Initialize a \c array_info structure for each array that is enabled in
* \c state. Determine how many arrays are enabled, and store the result
* in \c num_arrays. Determine how big each vertex is, and store the result
* in \c total_vertex_size.
*
* \returns The size of the final request. This is the size, in bytes, of
* the DrawArrays header, the ARRAY_INFO structures, and all the vertex data.
* This value \b assumes a \c X_GLXRender command is used. The true size
* will be 4 bytes larger if a \c X_GLXRenderLarge command is used.
*/
static GLuint
prep_arrays(const __GLXattribute * const state, struct array_info * arrays,
GLint count,
GLsizei *num_arrays, GLsizei *total_vertex_size)
{
GLsizei na = 0;
GLsizei vs = 0;
#define ASSIGN_ARRAY_INFO(state, enum_name, arr) \
do { \
arrays[ na ].ai.datatype = state->vertArray. arr .type ; \
arrays[ na ].ai.numVals = state->vertArray. arr .size ; \
arrays[ na ].ai.component = GL_ ## enum_name ## _ARRAY; \
\
arrays[ na ].bytes = state->vertArray. arr .size \
* __glXTypeSize( state->vertArray. arr .type ); \
arrays[ na ].ptr = state->vertArray. arr .ptr; \
arrays[ na ].skip = state->vertArray. arr .skip; \
\
vs += __GLX_PAD(arrays[ na ].bytes); \
na++; \
} while( 0 )
#define ADD_ARRAY_IF_ENABLED(state, enum_name, arr) \
do { if ( IS_ARRAY_ENABLED(state, arr) ) { \
ASSIGN_ARRAY_INFO(state, enum_name, arrays[ arr ## _ARRAY ] ); \
} } while( 0 )
ADD_ARRAY_IF_ENABLED(state, VERTEX, vertex);
ADD_ARRAY_IF_ENABLED(state, NORMAL, normal);
ADD_ARRAY_IF_ENABLED(state, COLOR, color);
ADD_ARRAY_IF_ENABLED(state, SECONDARY_COLOR, secondaryColor);
ADD_ARRAY_IF_ENABLED(state, FOG_COORD, fogCoord);
ADD_ARRAY_IF_ENABLED(state, EDGE_FLAG, edgeFlag);
ADD_ARRAY_IF_ENABLED(state, INDEX, index);
/* The standard DrawArrays protocol *only* supports a single array of
* texture coordinates.
*/
if ( IS_TEXARRAY_ENABLED(state, 0) ) {
ASSIGN_ARRAY_INFO(state, TEXTURE_COORD, texCoord[0]);
}
*num_arrays = na;
*total_vertex_size = vs;
return __GLX_PAD((__GLX_COMPONENT_HDR_SIZE * na)
+ (vs * count)
+ __GLX_DRAWARRAYS_CMD_HDR_SIZE);
}
/**
* Emits the vertex data for the DrawArrays GLX protocol.
*/
static GLsizei
emit_vertex(GLubyte * data, const struct array_info * arrays,
GLsizei num_arrays, GLint element, GLsizei offset)
{
GLint i;
for ( i = 0 ; i < num_arrays ; i++ ) {
(void) memcpy( data + offset,
arrays[i].ptr + (arrays[i].skip * element),
arrays[i].bytes );
offset += __GLX_PAD(arrays[i].bytes);
}
return offset;
}
static void
emit_header(GLubyte * pc, const struct array_info * arrays,
GLsizei num_arrays, GLsizei count, GLenum mode)
{
__GLXdispatchDrawArraysComponentHeader *arrayInfo;
GLsizei i;
__GLX_PUT_LONG(0, count);
__GLX_PUT_LONG(4, num_arrays);
__GLX_PUT_LONG(8, mode);
arrayInfo = (__GLXdispatchDrawArraysComponentHeader *)
(pc + __GLX_DRAWARRAYS_HDR_SIZE);
/* Write the ARRAY_INFO data.
*/
for ( i = 0 ; i < num_arrays ; i++ ) {
arrayInfo[i] = arrays[i].ai;
}
}
/**
* Emit GLX DrawArrays protocol using a GLXRender packet.
*/
static void
emit_Render_DrawArrays(__GLXcontext * gc, const struct array_info * arrays,
GLsizei first, GLsizei count, GLsizei num_arrays, GLenum mode,
GLsizei cmdlen, GLsizei total_vertex_size)
{
GLubyte * pc = gc->pc;
GLsizei offset;
GLsizei i;
__GLX_BEGIN_VARIABLE(X_GLrop_DrawArrays, cmdlen);
emit_header(pc + 4, arrays, num_arrays, count, mode);
/* Write the actual array data.
*/
offset = __GLX_DRAWARRAYS_CMD_HDR_SIZE
+ (num_arrays * __GLX_COMPONENT_HDR_SIZE);
for ( i = 0 ; i < count ; i++ ) {
offset = emit_vertex(pc, arrays, num_arrays, i + first, offset);
}
__GLX_END(cmdlen);
}
/**
* Emit GLX DrawArrays protocol using a GLXRenderLarge packet.
*/
static void
emit_RenderLarge_DrawArrays(__GLXcontext * gc, const struct array_info * arrays,
GLsizei first, GLsizei count, GLsizei num_arrays, GLenum mode,
GLsizei cmdlen, GLsizei total_vertex_size)
{
GLubyte * pc = gc->pc;
GLsizei offset;
GLsizei i;
GLint maxSize;
GLint totalRequests;
GLint requestNumber;
GLsizei elements_per_request;
/* Calculate the maximum amount of data can be stuffed into a single
* packet. sz_xGLXRenderReq is added because bufSize is the maximum
* packet size minus sz_xGLXRenderReq.
*
* The important value here is elements_per_request. This is the number
* of complete array elements that will fit in a single buffer. There
* may be some wasted space at the end of the buffer, but splitting
* elements across buffer boundries would be painful.
*/
maxSize = (gc->bufSize + sz_xGLXRenderReq) - sz_xGLXRenderLargeReq;
elements_per_request = maxSize / total_vertex_size;
totalRequests = ((count + (elements_per_request - 1))
/ elements_per_request) + 1;
/* Fill in the header data and send it away.
*/
__GLX_BEGIN_VARIABLE_LARGE(X_GLrop_DrawArrays, cmdlen+4);
emit_header(pc + 8, arrays, num_arrays, count, mode);
gc->pc = pc + (__GLX_DRAWARRAYS_CMD_HDR_SIZE + 4)
+ (__GLX_COMPONENT_HDR_SIZE * num_arrays);
__glXSendLargeChunk(gc, 1, totalRequests, gc->buf, gc->pc - gc->buf);
/* Write the actual array data.
*/
offset = 0;
requestNumber = 2;
for ( i = 0 ; i < count ; i++ ) {
if ( i == elements_per_request ) {
__glXSendLargeChunk(gc, requestNumber, totalRequests,
gc->buf, offset);
requestNumber++;
offset = 0;
count -= i;
first += i;
i = 0;
}
offset = emit_vertex(gc->buf, arrays, num_arrays, i + first, offset);
}
/* If the buffer isn't empty, emit the last, partial request.
*/
if ( offset != 0 ) {
assert(requestNumber == totalRequests);
__glXSendLargeChunk(gc, requestNumber, totalRequests, gc->buf, offset);
}
gc->pc = gc->buf;
}
/**
* Emit DrawArrays protocol. This function acts as a switch betteen
* \c emit_Render_DrawArrays and \c emit_RenderLarge_DrawArrays depending
* on how much array data is to be sent.
*/
static void
emit_DrawArraysEXT(const __GLXattribute * const state,
GLint first, GLsizei count, GLenum mode)
{
struct array_info arrays[32];
GLsizei num_arrays;
GLsizei total_vertex_size;
__GLXcontext *gc = __glXGetCurrentContext();
GLuint cmdlen;
/* Determine how big the final request will be. This depends on a number
* of factors. It depends on how many array elemets there are (which is
* the passed-in 'count'), how many arrays are enabled, how many elements
* are in each array entry, and what the types are for each array.
*/
cmdlen = prep_arrays(state, arrays, count, & num_arrays,
& total_vertex_size);
/* If the data payload and the protocol header is too large for a Render
* command, use a RenderLarge command.
*/
if (cmdlen > gc->maxSmallRenderCommandSize) {
emit_RenderLarge_DrawArrays(gc, arrays, first, count, num_arrays,
mode, cmdlen, total_vertex_size);
}
else {
emit_Render_DrawArrays(gc, arrays, first, count, num_arrays,
mode, cmdlen, total_vertex_size);
}
}
/**
* Emit a DrawArrays call using the old "protocol." This isn't really
* DrawArrays protocol at all. It just simulates DrawArrays by using
* immediate-mode vertex calls. Very, very slow for large arrays, but works
* with every GLX server.
*/
static void
emit_DrawArrays_old(const __GLXattribute * const state,
GLint first, GLsizei count, GLenum mode)
{
const __GLXvertArrayState *va = &state->vertArray;
const GLubyte *vaPtr[__GLX_MAX_ARRAYS];
const GLubyte *tcaPtr[__GLX_MAX_TEXTURE_UNITS];
GLint i, j;
/*
** Set up pointers for quick array traversal.
*/
(void) memset( vaPtr, 0, sizeof(vaPtr) );
(void) memset( tcaPtr, 0, sizeof(tcaPtr) );
for ( j = 0 ; j < __GLX_MAX_ARRAYS ; j++ ) {
if (IS_ARRAY_ENABLED_BY_INDEX(state, j)) {
vaPtr[ j ] = va->arrays[ j ].ptr + first * va->arrays[ j ].skip;
}
}
for ( j = 0 ; j < __GLX_MAX_TEXTURE_UNITS ; j++ ) {
if (IS_TEXARRAY_ENABLED(state, j))
tcaPtr[ j ] = va->texCoord[ j ].ptr + first * va->texCoord[ j ].skip;
}
__indirect_glBegin(mode);
for (i = 0; i < count; i++) {
if (IS_TEXARRAY_ENABLED(state, 0)) {
(*va->texCoord[0].proc)(tcaPtr[0]);
tcaPtr[0] += va->texCoord[0].skip;
}
/* Multitexturing is handled specially because the protocol
* requires an extra parameter.
*/
for (j=1; j<__GLX_MAX_TEXTURE_UNITS; ++j) {
if (IS_TEXARRAY_ENABLED(state, j)) {
(*va->texCoord[j].mtex_proc)(GL_TEXTURE0 + j, tcaPtr[j]);
tcaPtr[j] += va->texCoord[j].skip;
}
}
for ( j = 0 ; j < __GLX_MAX_ARRAYS ; j++ ) {
if (IS_ARRAY_ENABLED_BY_INDEX(state, j)) {
(*va->arrays[ j ].proc)(vaPtr[ j ]);
vaPtr[ j ] += va->arrays[ j ].skip;
}
}
}
__indirect_glEnd();
}
/**
* Validate that the \c mode and \c count parameters to \c glDrawArrays or
* \c glDrawElements are valid. If the arguments are not valid, then an
* error code is set in the GLX context.
*
* \returns \c GL_TRUE if the arguments are valide, \c GL_FALSE if they are
* not.
*/
static GLboolean
glx_validate_array_args(__GLXcontext *gc, GLenum mode, GLsizei count)
{
switch(mode) {
case GL_POINTS:
case GL_LINE_STRIP:
case GL_LINE_LOOP:
case GL_LINES:
case GL_TRIANGLE_STRIP:
case GL_TRIANGLE_FAN:
case GL_TRIANGLES:
case GL_QUAD_STRIP:
case GL_QUADS:
case GL_POLYGON:
break;
default:
__glXSetError(gc, GL_INVALID_ENUM);
return GL_FALSE;
}
if (count < 0) {
__glXSetError(gc, GL_INVALID_VALUE);
return GL_FALSE;
}
return GL_TRUE;
}
void __indirect_glDrawArrays(GLenum mode, GLint first, GLsizei count)
{
__GLXcontext *gc = __glXGetCurrentContext();
const __GLXattribute * state =
(const __GLXattribute *)(gc->client_state_private);
if ( ! glx_validate_array_args(gc, mode, count) ) {
return;
}
/* The "true" DrawArrays protocol does not support generic attributes,
* multiple vertex arrays, or multiple texture coordinate arrays.
*/
if ( state->NoDrawArraysProtocol
|| (state->vertArray.texture_enables > 1) ) {
emit_DrawArrays_old(state, first, count, mode);
}
else {
emit_DrawArraysEXT(state, first, count, mode);
}
}
/**
* \todo Modify this to use the "true" DrawArrays protocol if possible. This
* would probably require refactoring out parts of \c emit_DrawArraysEXT into
* more general functions that could be used in either place.
*/
void __indirect_glDrawElements(GLenum mode, GLsizei count, GLenum type,
const GLvoid *indices)
{
__GLXcontext *gc = __glXGetCurrentContext();
__GLXattribute * state = (__GLXattribute *)(gc->client_state_private);
__GLXvertArrayState *va = &state->vertArray;
const GLubyte *iPtr1 = NULL;
const GLushort *iPtr2 = NULL;
const GLuint *iPtr3 = NULL;
GLint i, j, offset = 0;
if ( ! glx_validate_array_args(gc, mode, count) ) {
return;
}
switch (type) {
case GL_UNSIGNED_BYTE:
iPtr1 = (const GLubyte *)indices;
break;
case GL_UNSIGNED_SHORT:
iPtr2 = (const GLushort *)indices;
break;
case GL_UNSIGNED_INT:
iPtr3 = (const GLuint *)indices;
break;
default:
__glXSetError(gc, GL_INVALID_ENUM);
return;
}
__indirect_glBegin(mode);
for (i = 0; i < count; i++) {
switch (type) {
case GL_UNSIGNED_BYTE:
offset = (GLint)(*iPtr1++);
break;
case GL_UNSIGNED_SHORT:
offset = (GLint)(*iPtr2++);
break;
case GL_UNSIGNED_INT:
offset = (GLint)(*iPtr3++);
break;
}
if (IS_TEXARRAY_ENABLED(state, 0)) {
(*va->texCoord[0].proc)(va->texCoord[0].ptr+
(offset*va->texCoord[0].skip));
}
/* Multitexturing is handled specially because the protocol
* requires an extra parameter.
*/
for (j=1; j<__GLX_MAX_TEXTURE_UNITS; ++j) {
if (IS_TEXARRAY_ENABLED(state, j)) {
(*va->texCoord[j].mtex_proc)(GL_TEXTURE0 + j,
va->texCoord[j].ptr+
(offset*va->texCoord[j].skip));
}
}
for ( j = 0 ; j < __GLX_MAX_ARRAYS ; j++ ) {
if (IS_ARRAY_ENABLED_BY_INDEX(state, j)) {
(*va->arrays[ j ].proc)(va->arrays[ j ].ptr
+(offset*va->arrays[ j ].skip));
}
}
}
__indirect_glEnd();
}
void __indirect_glDrawRangeElements(GLenum mode, GLuint start, GLuint end,
GLsizei count, GLenum type,
const GLvoid *indices)
{
__GLXcontext *gc = __glXGetCurrentContext();
if (end < start) {
__glXSetError(gc, GL_INVALID_VALUE);
return;
}
__indirect_glDrawElements(mode,count,type,indices);
}
void __indirect_glMultiDrawArraysEXT(GLenum mode, GLint *first, GLsizei *count,
GLsizei primcount)
{
GLsizei i;
for(i=0; i<primcount; i++) {
if ( count[i] > 0 ) {
__indirect_glDrawArrays( mode, first[i], count[i] );
}
}
}
void __indirect_glMultiDrawElementsEXT(GLenum mode, const GLsizei *count,
GLenum type, const GLvoid ** indices,
GLsizei primcount)
{
GLsizei i;
for(i=0; i<primcount; i++) {
if ( count[i] > 0 ) {
__indirect_glDrawElements( mode, count[i], type, indices[i] );
}
}
}
void __indirect_glClientActiveTextureARB(GLenum texture)
{
__GLXcontext *gc = __glXGetCurrentContext();
__GLXattribute * state = (__GLXattribute *)(gc->client_state_private);
GLint unit = (GLint) texture - GL_TEXTURE0;
if (unit < 0 || __GLX_MAX_TEXTURE_UNITS <= unit) {
__glXSetError(gc, GL_INVALID_ENUM);
return;
}
state->vertArray.activeTexture = unit;
}