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ioq3quest/code/renderergl2/tr_vbo.c
SmileTheory 0578b70f38 OpenGL2: Reduce redundant GL calls.
2014-10-14 06:15:06 -07:00

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/*
===========================================================================
Copyright (C) 2007-2009 Robert Beckebans <trebor_7@users.sourceforge.net>
This file is part of XreaL source code.
XreaL source code is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
XreaL source code is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with XreaL source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
===========================================================================
*/
// tr_vbo.c
#include "tr_local.h"
uint32_t R_VaoPackTangent(vec4_t v)
{
if (glRefConfig.packedNormalDataType == GL_UNSIGNED_INT_2_10_10_10_REV)
{
return (((uint32_t)(v[3] * 1.5f + 2.0f )) << 30)
| (((uint32_t)(v[2] * 511.5f + 512.0f)) << 20)
| (((uint32_t)(v[1] * 511.5f + 512.0f)) << 10)
| (((uint32_t)(v[0] * 511.5f + 512.0f)));
}
else
{
return (((uint32_t)(v[3] * 127.5f + 128.0f)) << 24)
| (((uint32_t)(v[2] * 127.5f + 128.0f)) << 16)
| (((uint32_t)(v[1] * 127.5f + 128.0f)) << 8)
| (((uint32_t)(v[0] * 127.5f + 128.0f)));
}
}
uint32_t R_VaoPackNormal(vec3_t v)
{
if (glRefConfig.packedNormalDataType == GL_UNSIGNED_INT_2_10_10_10_REV)
{
return (((uint32_t)(v[2] * 511.5f + 512.0f)) << 20)
| (((uint32_t)(v[1] * 511.5f + 512.0f)) << 10)
| (((uint32_t)(v[0] * 511.5f + 512.0f)));
}
else
{
return (((uint32_t)(v[2] * 127.5f + 128.0f)) << 16)
| (((uint32_t)(v[1] * 127.5f + 128.0f)) << 8)
| (((uint32_t)(v[0] * 127.5f + 128.0f)));
}
}
void R_VaoUnpackTangent(vec4_t v, uint32_t b)
{
if (glRefConfig.packedNormalDataType == GL_UNSIGNED_INT_2_10_10_10_REV)
{
v[0] = ((b) & 0x3ff) * 1.0f/511.5f - 1.0f;
v[1] = ((b >> 10) & 0x3ff) * 1.0f/511.5f - 1.0f;
v[2] = ((b >> 20) & 0x3ff) * 1.0f/511.5f - 1.0f;
v[3] = ((b >> 30) & 0x3) * 1.0f/1.5f - 1.0f;
}
else
{
v[0] = ((b) & 0xff) * 1.0f/127.5f - 1.0f;
v[1] = ((b >> 8) & 0xff) * 1.0f/127.5f - 1.0f;
v[2] = ((b >> 16) & 0xff) * 1.0f/127.5f - 1.0f;
v[3] = ((b >> 24) & 0xff) * 1.0f/127.5f - 1.0f;
}
}
void R_VaoUnpackNormal(vec3_t v, uint32_t b)
{
if (glRefConfig.packedNormalDataType == GL_UNSIGNED_INT_2_10_10_10_REV)
{
v[0] = ((b) & 0x3ff) * 1.0f/511.5f - 1.0f;
v[1] = ((b >> 10) & 0x3ff) * 1.0f/511.5f - 1.0f;
v[2] = ((b >> 20) & 0x3ff) * 1.0f/511.5f - 1.0f;
}
else
{
v[0] = ((b) & 0xff) * 1.0f/127.5f - 1.0f;
v[1] = ((b >> 8) & 0xff) * 1.0f/127.5f - 1.0f;
v[2] = ((b >> 16) & 0xff) * 1.0f/127.5f - 1.0f;
}
}
void Vao_SetVertexPointers(vao_t *vao)
{
int i;
// set vertex pointers
for (i = 0; i < ATTR_INDEX_COUNT; i++)
{
if (vao->attribs[i].enabled)
{
qglVertexAttribPointerARB((GLuint)i,
(GLint)vao->attribs[i].count,
(GLenum)vao->attribs[i].type,
(GLboolean)vao->attribs[i].normalized,
(GLsizei)vao->attribs[i].stride,
BUFFER_OFFSET(vao->attribs[i].offset));
qglEnableVertexAttribArrayARB(i);
}
else
{
qglDisableVertexAttribArrayARB(i);
}
}
}
/*
============
R_CreateVao
============
*/
vao_t *R_CreateVao(const char *name, byte *vertexes, int vertexesSize, byte *indexes, int indexesSize, vaoUsage_t usage)
{
vao_t *vao;
int glUsage;
switch (usage)
{
case VAO_USAGE_STATIC:
glUsage = GL_STATIC_DRAW_ARB;
break;
case VAO_USAGE_DYNAMIC:
glUsage = GL_DYNAMIC_DRAW_ARB;
break;
default:
Com_Error(ERR_FATAL, "bad vaoUsage_t given: %i", usage);
return NULL;
}
if(strlen(name) >= MAX_QPATH)
{
ri.Error(ERR_DROP, "R_CreateVao: \"%s\" is too long", name);
}
if ( tr.numVaos == MAX_VAOS ) {
ri.Error( ERR_DROP, "R_CreateVao: MAX_VAOS hit");
}
R_IssuePendingRenderCommands();
vao = tr.vaos[tr.numVaos] = ri.Hunk_Alloc(sizeof(*vao), h_low);
tr.numVaos++;
memset(vao, 0, sizeof(*vao));
Q_strncpyz(vao->name, name, sizeof(vao->name));
if (glRefConfig.vertexArrayObject)
{
qglGenVertexArraysARB(1, &vao->vao);
qglBindVertexArrayARB(vao->vao);
}
vao->vertexesSize = vertexesSize;
qglGenBuffersARB(1, &vao->vertexesVBO);
qglBindBufferARB(GL_ARRAY_BUFFER_ARB, vao->vertexesVBO);
qglBufferDataARB(GL_ARRAY_BUFFER_ARB, vertexesSize, vertexes, glUsage);
vao->indexesSize = indexesSize;
qglGenBuffersARB(1, &vao->indexesIBO);
qglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, vao->indexesIBO);
qglBufferDataARB(GL_ELEMENT_ARRAY_BUFFER_ARB, indexesSize, indexes, glUsage);
glState.currentVao = vao;
GL_CheckErrors();
return vao;
}
/*
============
R_CreateVao2
============
*/
vao_t *R_CreateVao2(const char *name, int numVertexes, srfVert_t *verts, int numIndexes, glIndex_t *indexes)
{
vao_t *vao;
int i;
byte *data;
int dataSize;
int dataOfs;
int glUsage = GL_STATIC_DRAW_ARB;
if(!numVertexes || !numIndexes)
return NULL;
if(strlen(name) >= MAX_QPATH)
{
ri.Error(ERR_DROP, "R_CreateVao2: \"%s\" is too long", name);
}
if ( tr.numVaos == MAX_VAOS ) {
ri.Error( ERR_DROP, "R_CreateVao2: MAX_VAOS hit");
}
R_IssuePendingRenderCommands();
vao = tr.vaos[tr.numVaos] = ri.Hunk_Alloc(sizeof(*vao), h_low);
tr.numVaos++;
memset(vao, 0, sizeof(*vao));
Q_strncpyz(vao->name, name, sizeof(vao->name));
// since these vertex attributes are never altered, interleave them
vao->attribs[ATTR_INDEX_POSITION ].enabled = 1;
vao->attribs[ATTR_INDEX_NORMAL ].enabled = 1;
#ifdef USE_VERT_TANGENT_SPACE
vao->attribs[ATTR_INDEX_TANGENT ].enabled = 1;
#endif
vao->attribs[ATTR_INDEX_TEXCOORD ].enabled = 1;
vao->attribs[ATTR_INDEX_LIGHTCOORD ].enabled = 1;
vao->attribs[ATTR_INDEX_COLOR ].enabled = 1;
vao->attribs[ATTR_INDEX_LIGHTDIRECTION].enabled = 1;
vao->attribs[ATTR_INDEX_POSITION ].count = 3;
vao->attribs[ATTR_INDEX_NORMAL ].count = 4;
vao->attribs[ATTR_INDEX_TANGENT ].count = 4;
vao->attribs[ATTR_INDEX_TEXCOORD ].count = 2;
vao->attribs[ATTR_INDEX_LIGHTCOORD ].count = 2;
vao->attribs[ATTR_INDEX_COLOR ].count = 4;
vao->attribs[ATTR_INDEX_LIGHTDIRECTION].count = 4;
vao->attribs[ATTR_INDEX_POSITION ].type = GL_FLOAT;
vao->attribs[ATTR_INDEX_NORMAL ].type = glRefConfig.packedNormalDataType;
vao->attribs[ATTR_INDEX_TANGENT ].type = glRefConfig.packedNormalDataType;
vao->attribs[ATTR_INDEX_TEXCOORD ].type = GL_FLOAT;
vao->attribs[ATTR_INDEX_LIGHTCOORD ].type = GL_FLOAT;
vao->attribs[ATTR_INDEX_COLOR ].type = GL_FLOAT;
vao->attribs[ATTR_INDEX_LIGHTDIRECTION].type = glRefConfig.packedNormalDataType;
vao->attribs[ATTR_INDEX_POSITION ].normalized = GL_FALSE;
vao->attribs[ATTR_INDEX_NORMAL ].normalized = GL_TRUE;
vao->attribs[ATTR_INDEX_TANGENT ].normalized = GL_TRUE;
vao->attribs[ATTR_INDEX_TEXCOORD ].normalized = GL_FALSE;
vao->attribs[ATTR_INDEX_LIGHTCOORD ].normalized = GL_FALSE;
vao->attribs[ATTR_INDEX_COLOR ].normalized = GL_FALSE;
vao->attribs[ATTR_INDEX_LIGHTDIRECTION].normalized = GL_TRUE;
vao->attribs[ATTR_INDEX_POSITION ].offset = 0; dataSize = sizeof(verts[0].xyz);
vao->attribs[ATTR_INDEX_NORMAL ].offset = dataSize; dataSize += sizeof(uint32_t);
#ifdef USE_VERT_TANGENT_SPACE
vao->attribs[ATTR_INDEX_TANGENT ].offset = dataSize; dataSize += sizeof(uint32_t);
#endif
vao->attribs[ATTR_INDEX_TEXCOORD ].offset = dataSize; dataSize += sizeof(verts[0].st);
vao->attribs[ATTR_INDEX_LIGHTCOORD ].offset = dataSize; dataSize += sizeof(verts[0].lightmap);
vao->attribs[ATTR_INDEX_COLOR ].offset = dataSize; dataSize += sizeof(verts[0].vertexColors);
vao->attribs[ATTR_INDEX_LIGHTDIRECTION].offset = dataSize; dataSize += sizeof(uint32_t);
vao->attribs[ATTR_INDEX_POSITION ].stride = dataSize;
vao->attribs[ATTR_INDEX_NORMAL ].stride = dataSize;
vao->attribs[ATTR_INDEX_TANGENT ].stride = dataSize;
vao->attribs[ATTR_INDEX_TEXCOORD ].stride = dataSize;
vao->attribs[ATTR_INDEX_LIGHTCOORD ].stride = dataSize;
vao->attribs[ATTR_INDEX_COLOR ].stride = dataSize;
vao->attribs[ATTR_INDEX_LIGHTDIRECTION].stride = dataSize;
if (glRefConfig.vertexArrayObject)
{
qglGenVertexArraysARB(1, &vao->vao);
qglBindVertexArrayARB(vao->vao);
}
// create VBO
dataSize *= numVertexes;
data = ri.Hunk_AllocateTempMemory(dataSize);
dataOfs = 0;
for (i = 0; i < numVertexes; i++)
{
uint32_t *p;
// xyz
memcpy(data + dataOfs, &verts[i].xyz, sizeof(verts[i].xyz));
dataOfs += sizeof(verts[i].xyz);
// normal
p = (uint32_t *)(data + dataOfs);
*p = R_VaoPackNormal(verts[i].normal);
dataOfs += sizeof(uint32_t);
#ifdef USE_VERT_TANGENT_SPACE
// tangent
p = (uint32_t *)(data + dataOfs);
*p = R_VaoPackTangent(verts[i].tangent);
dataOfs += sizeof(uint32_t);
#endif
// vertex texcoords
memcpy(data + dataOfs, &verts[i].st, sizeof(verts[i].st));
dataOfs += sizeof(verts[i].st);
// feed vertex lightmap texcoords
memcpy(data + dataOfs, &verts[i].lightmap, sizeof(verts[i].lightmap));
dataOfs += sizeof(verts[i].lightmap);
// feed vertex colors
memcpy(data + dataOfs, &verts[i].vertexColors, sizeof(verts[i].vertexColors));
dataOfs += sizeof(verts[i].vertexColors);
// feed vertex light directions
p = (uint32_t *)(data + dataOfs);
*p = R_VaoPackNormal(verts[i].lightdir);
dataOfs += sizeof(uint32_t);
}
vao->vertexesSize = dataSize;
qglGenBuffersARB(1, &vao->vertexesVBO);
qglBindBufferARB(GL_ARRAY_BUFFER_ARB, vao->vertexesVBO);
qglBufferDataARB(GL_ARRAY_BUFFER_ARB, vao->vertexesSize, data, glUsage);
// create IBO
vao->indexesSize = numIndexes * sizeof(glIndex_t);
qglGenBuffersARB(1, &vao->indexesIBO);
qglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, vao->indexesIBO);
qglBufferDataARB(GL_ELEMENT_ARRAY_BUFFER_ARB, vao->indexesSize, indexes, glUsage);
Vao_SetVertexPointers(vao);
glState.currentVao = vao;
GL_CheckErrors();
ri.Hunk_FreeTempMemory(data);
return vao;
}
/*
============
R_BindVao
============
*/
void R_BindVao(vao_t * vao)
{
if(!vao)
{
//R_BindNullVao();
ri.Error(ERR_DROP, "R_BindVao: NULL vao");
return;
}
if(r_logFile->integer)
{
// don't just call LogComment, or we will get a call to va() every frame!
GLimp_LogComment(va("--- R_BindVao( %s ) ---\n", vao->name));
}
if(glState.currentVao != vao)
{
glState.currentVao = vao;
glState.vertexAttribsInterpolation = 0;
glState.vertexAttribsOldFrame = 0;
glState.vertexAttribsNewFrame = 0;
glState.vertexAnimation = qfalse;
backEnd.pc.c_vaoBinds++;
if (glRefConfig.vertexArrayObject)
{
qglBindVertexArrayARB(vao->vao);
// why you no save GL_ELEMENT_ARRAY_BUFFER binding, Intel?
if (1)
qglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER, vao->indexesIBO);
}
else
{
qglBindBufferARB(GL_ARRAY_BUFFER_ARB, vao->vertexesVBO);
qglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, vao->indexesIBO);
Vao_SetVertexPointers(vao);
}
}
}
/*
============
R_BindNullVao
============
*/
void R_BindNullVao(void)
{
GLimp_LogComment("--- R_BindNullVao ---\n");
if(glState.currentVao)
{
if (glRefConfig.vertexArrayObject)
{
qglBindVertexArrayARB(0);
// why you no save GL_ELEMENT_ARRAY_BUFFER binding, Intel?
if (1) qglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
}
else
{
qglBindBufferARB(GL_ARRAY_BUFFER_ARB, 0);
qglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
}
glState.currentVao = NULL;
}
GL_CheckErrors();
}
/*
============
R_InitVaos
============
*/
void R_InitVaos(void)
{
int vertexesSize, indexesSize;
int offset;
ri.Printf(PRINT_ALL, "------- R_InitVaos -------\n");
tr.numVaos = 0;
vertexesSize = sizeof(tess.xyz[0]);
vertexesSize += sizeof(tess.normal[0]);
#ifdef USE_VERT_TANGENT_SPACE
vertexesSize += sizeof(tess.tangent[0]);
#endif
vertexesSize += sizeof(tess.vertexColors[0]);
vertexesSize += sizeof(tess.texCoords[0][0]) * 2;
vertexesSize += sizeof(tess.lightdir[0]);
vertexesSize *= SHADER_MAX_VERTEXES;
indexesSize = sizeof(tess.indexes[0]) * SHADER_MAX_INDEXES;
tess.vao = R_CreateVao("tessVertexArray_VAO", NULL, vertexesSize, NULL, indexesSize, VAO_USAGE_DYNAMIC);
offset = 0;
tess.vao->attribs[ATTR_INDEX_POSITION ].enabled = 1;
tess.vao->attribs[ATTR_INDEX_NORMAL ].enabled = 1;
#ifdef USE_VERT_TANGENT_SPACE
tess.vao->attribs[ATTR_INDEX_TANGENT ].enabled = 1;
#endif
tess.vao->attribs[ATTR_INDEX_TEXCOORD ].enabled = 1;
tess.vao->attribs[ATTR_INDEX_LIGHTCOORD ].enabled = 1;
tess.vao->attribs[ATTR_INDEX_COLOR ].enabled = 1;
tess.vao->attribs[ATTR_INDEX_LIGHTDIRECTION].enabled = 1;
tess.vao->attribs[ATTR_INDEX_POSITION ].count = 3;
tess.vao->attribs[ATTR_INDEX_NORMAL ].count = 4;
tess.vao->attribs[ATTR_INDEX_TANGENT ].count = 4;
tess.vao->attribs[ATTR_INDEX_TEXCOORD ].count = 2;
tess.vao->attribs[ATTR_INDEX_LIGHTCOORD ].count = 2;
tess.vao->attribs[ATTR_INDEX_COLOR ].count = 4;
tess.vao->attribs[ATTR_INDEX_LIGHTDIRECTION].count = 4;
tess.vao->attribs[ATTR_INDEX_POSITION ].type = GL_FLOAT;
tess.vao->attribs[ATTR_INDEX_NORMAL ].type = glRefConfig.packedNormalDataType;
tess.vao->attribs[ATTR_INDEX_TANGENT ].type = glRefConfig.packedNormalDataType;
tess.vao->attribs[ATTR_INDEX_TEXCOORD ].type = GL_FLOAT;
tess.vao->attribs[ATTR_INDEX_LIGHTCOORD ].type = GL_FLOAT;
tess.vao->attribs[ATTR_INDEX_COLOR ].type = GL_FLOAT;
tess.vao->attribs[ATTR_INDEX_LIGHTDIRECTION].type = glRefConfig.packedNormalDataType;
tess.vao->attribs[ATTR_INDEX_POSITION ].normalized = GL_FALSE;
tess.vao->attribs[ATTR_INDEX_NORMAL ].normalized = GL_TRUE;
tess.vao->attribs[ATTR_INDEX_TANGENT ].normalized = GL_TRUE;
tess.vao->attribs[ATTR_INDEX_TEXCOORD ].normalized = GL_FALSE;
tess.vao->attribs[ATTR_INDEX_LIGHTCOORD ].normalized = GL_FALSE;
tess.vao->attribs[ATTR_INDEX_COLOR ].normalized = GL_FALSE;
tess.vao->attribs[ATTR_INDEX_LIGHTDIRECTION].normalized = GL_TRUE;
tess.vao->attribs[ATTR_INDEX_POSITION ].offset = offset; offset += sizeof(tess.xyz[0]) * SHADER_MAX_VERTEXES;
tess.vao->attribs[ATTR_INDEX_NORMAL ].offset = offset; offset += sizeof(tess.normal[0]) * SHADER_MAX_VERTEXES;
#ifdef USE_VERT_TANGENT_SPACE
tess.vao->attribs[ATTR_INDEX_TANGENT ].offset = offset; offset += sizeof(tess.tangent[0]) * SHADER_MAX_VERTEXES;
#endif
// these next two are actually interleaved
tess.vao->attribs[ATTR_INDEX_TEXCOORD ].offset = offset;
tess.vao->attribs[ATTR_INDEX_LIGHTCOORD ].offset = offset + sizeof(tess.texCoords[0][0]);
offset += sizeof(tess.texCoords[0][0]) * 2 * SHADER_MAX_VERTEXES;
tess.vao->attribs[ATTR_INDEX_COLOR ].offset = offset; offset += sizeof(tess.vertexColors[0]) * SHADER_MAX_VERTEXES;
tess.vao->attribs[ATTR_INDEX_LIGHTDIRECTION].offset = offset;
tess.vao->attribs[ATTR_INDEX_POSITION ].stride = sizeof(tess.xyz[0]);
tess.vao->attribs[ATTR_INDEX_NORMAL ].stride = sizeof(tess.normal[0]);
#ifdef USE_VERT_TANGENT_SPACE
tess.vao->attribs[ATTR_INDEX_TANGENT ].stride = sizeof(tess.tangent[0]);
#endif
tess.vao->attribs[ATTR_INDEX_COLOR ].stride = sizeof(tess.vertexColors[0]);
tess.vao->attribs[ATTR_INDEX_TEXCOORD ].stride = sizeof(tess.texCoords[0][0]) * 2;
tess.vao->attribs[ATTR_INDEX_LIGHTCOORD ].stride = sizeof(tess.texCoords[0][0]) * 2;
tess.vao->attribs[ATTR_INDEX_LIGHTDIRECTION].stride = sizeof(tess.lightdir[0]);
tess.attribPointers[ATTR_INDEX_POSITION] = tess.xyz;
tess.attribPointers[ATTR_INDEX_TEXCOORD] = tess.texCoords;
tess.attribPointers[ATTR_INDEX_NORMAL] = tess.normal;
#ifdef USE_VERT_TANGENT_SPACE
tess.attribPointers[ATTR_INDEX_TANGENT] = tess.tangent;
#endif
tess.attribPointers[ATTR_INDEX_COLOR] = tess.vertexColors;
tess.attribPointers[ATTR_INDEX_LIGHTDIRECTION] = tess.lightdir;
Vao_SetVertexPointers(tess.vao);
R_BindNullVao();
GL_CheckErrors();
}
/*
============
R_ShutdownVaos
============
*/
void R_ShutdownVaos(void)
{
int i;
vao_t *vao;
ri.Printf(PRINT_ALL, "------- R_ShutdownVaos -------\n");
R_BindNullVao();
for(i = 0; i < tr.numVaos; i++)
{
vao = tr.vaos[i];
if(vao->vao)
qglDeleteVertexArraysARB(1, &vao->vao);
if(vao->vertexesVBO)
{
qglDeleteBuffersARB(1, &vao->vertexesVBO);
}
if(vao->indexesIBO)
{
qglDeleteBuffersARB(1, &vao->indexesIBO);
}
}
tr.numVaos = 0;
}
/*
============
R_VaoList_f
============
*/
void R_VaoList_f(void)
{
int i;
vao_t *vao;
int vertexesSize = 0;
int indexesSize = 0;
ri.Printf(PRINT_ALL, " size name\n");
ri.Printf(PRINT_ALL, "----------------------------------------------------------\n");
for(i = 0; i < tr.numVaos; i++)
{
vao = tr.vaos[i];
ri.Printf(PRINT_ALL, "%d.%02d MB %s\n", vao->vertexesSize / (1024 * 1024),
(vao->vertexesSize % (1024 * 1024)) * 100 / (1024 * 1024), vao->name);
vertexesSize += vao->vertexesSize;
}
for(i = 0; i < tr.numVaos; i++)
{
vao = tr.vaos[i];
ri.Printf(PRINT_ALL, "%d.%02d MB %s\n", vao->indexesSize / (1024 * 1024),
(vao->indexesSize % (1024 * 1024)) * 100 / (1024 * 1024), vao->name);
indexesSize += vao->indexesSize;
}
ri.Printf(PRINT_ALL, " %i total VAOs\n", tr.numVaos);
ri.Printf(PRINT_ALL, " %d.%02d MB total vertices memory\n", vertexesSize / (1024 * 1024),
(vertexesSize % (1024 * 1024)) * 100 / (1024 * 1024));
ri.Printf(PRINT_ALL, " %d.%02d MB total triangle indices memory\n", indexesSize / (1024 * 1024),
(indexesSize % (1024 * 1024)) * 100 / (1024 * 1024));
}
/*
==============
RB_UpdateTessVao
Adapted from Tess_UpdateVBOs from xreal
Update the default VAO to replace the client side vertex arrays
==============
*/
void RB_UpdateTessVao(unsigned int attribBits)
{
GLimp_LogComment("--- RB_UpdateTessVao ---\n");
backEnd.pc.c_dynamicVaoDraws++;
// update the default VAO
if(tess.numVertexes > 0 && tess.numVertexes <= SHADER_MAX_VERTEXES && tess.numIndexes > 0 && tess.numIndexes <= SHADER_MAX_INDEXES)
{
int attribIndex;
R_BindVao(tess.vao);
// these may not be bound if we're using VAOs
if (glRefConfig.vertexArrayObject)
{
qglBindBufferARB(GL_ARRAY_BUFFER_ARB, tess.vao->vertexesVBO);
qglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, tess.vao->indexesIBO);
}
// orphan old vertex buffer so we don't stall on it
qglBufferDataARB(GL_ARRAY_BUFFER_ARB, tess.vao->vertexesSize, NULL, GL_DYNAMIC_DRAW_ARB);
// if nothing to set, set everything
if(!(attribBits & ATTR_BITS))
attribBits = ATTR_BITS;
if(attribBits & ATTR_TEXCOORD || attribBits & ATTR_LIGHTCOORD)
{
// these are interleaved, so we update both if either need it
// this translates to updating ATTR_TEXCOORD twice as large as it needs
attribBits &= ~ATTR_LIGHTCOORD;
attribBits |= ATTR_TEXCOORD;
}
for (attribIndex = 0; attribIndex < ATTR_INDEX_COUNT; attribIndex++)
{
if (attribBits & (1 << attribIndex))
{
vaoAttrib_t *vAtb = &tess.vao->attribs[attribIndex];
// note: tess has a VBO where stride == size
qglBufferSubDataARB(GL_ARRAY_BUFFER_ARB, vAtb->offset, tess.numVertexes * vAtb->stride, tess.attribPointers[attribIndex]);
}
}
// orphan old index buffer so we don't stall on it
qglBufferDataARB(GL_ELEMENT_ARRAY_BUFFER_ARB, tess.vao->indexesSize, NULL, GL_DYNAMIC_DRAW_ARB);
qglBufferSubDataARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0, tess.numIndexes * sizeof(tess.indexes[0]), tess.indexes);
}
}
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