void Vao_SetVertexPointers(vao_t *vao)
{
int attribIndex;
// set vertex pointers
for (attribIndex = 0; attribIndex < ATTR_INDEX_COUNT; attribIndex++)
{
uint32_t attribBit = 1 << attribIndex;
vaoAttrib_t *vAtb = &vao->attribs[attribIndex];
if (vAtb->enabled)
{
qglVertexAttribPointer(attribIndex, vAtb->count, vAtb->type, vAtb->normalized, vAtb->stride, BUFFER_OFFSET(vAtb->offset));
if (glRefConfig.vertexArrayObject || !(glState.vertexAttribsEnabled & attribBit))
qglEnableVertexAttribArray(attribIndex);
if (!glRefConfig.vertexArrayObject || vao == tess.vao)
glState.vertexAttribsEnabled |= attribBit;
}
else
{
// don't disable vertex attribs when using vertex array objects
// Vao_SetVertexPointers is only called during init when using VAOs, and vertex attribs start disabled anyway
if (!glRefConfig.vertexArrayObject && (glState.vertexAttribsEnabled & attribBit))
qglDisableVertexAttribArray(attribIndex);
if (!glRefConfig.vertexArrayObject || vao == tess.vao)
glState.vertexAttribsEnabled &= ~attribBit;
}
}
}
void R_DisableAttribute (const char* name)
{
r_progvar_t* v;
if (!(v = R_ProgramVariable(GL_ATTRIBUTE, name)))
return;
qglDisableVertexAttribArray(v->location);
}
/*
* @brief
*/
void R_DisableAttribute(r_attribute_t *attribute) {
if (!attribute || attribute->location == -1) {
Com_Warn("NULL or invalid attribute\n");
return;
}
if (attribute->value.i != 0) {
qglDisableVertexAttribArray(attribute->location);
attribute->value.i = 0;
}
R_GetError(attribute->name);
}
/*
==================
GL_SetDefaultState
==================
*/
void GL_SetDefaultState (){
int i;
QGL_LogPrintf("---------- GL_SetDefaultState ----------\n");
// Reset the state manager
glState.projectionMatrixIdentity = true;
glState.modelviewMatrixIdentity = true;
for (i = 0; i < MAX_TEXTURE_UNITS; i++)
glState.textureMatrixIdentity[i] = true;
for (i = 0; i < MAX_TEXTURE_UNITS; i++)
glState.texture[i] = NULL;
glState.program = NULL;
glState.indexBuffer = NULL;
glState.vertexBuffer = NULL;
glState.viewportX = 0;
glState.viewportY = 0;
glState.viewportWidth = glConfig.videoWidth;
glState.viewportHeight = glConfig.videoHeight;
glState.scissorX = 0;
glState.scissorY = 0;
glState.scissorWidth = glConfig.videoWidth;
glState.scissorHeight = glConfig.videoHeight;
glState.depthBoundsMin = 0.0f;
glState.depthBoundsMax = 1.0f;
glState.texUnit = 0;
for (i = 0; i < MAX_TEXTURE_UNITS; i++){
glState.texTarget[i] = 0;
glState.texEnv[i] = GL_MODULATE;
glState.texGen[i][0] = GL_OBJECT_LINEAR;
glState.texGen[i][1] = GL_OBJECT_LINEAR;
glState.texGen[i][2] = GL_OBJECT_LINEAR;
glState.texGen[i][3] = GL_OBJECT_LINEAR;
}
glState.cullFace = false;
glState.polygonOffsetFill = false;
glState.polygonOffsetLine = false;
glState.blend = false;
glState.alphaTest = false;
glState.depthTest = false;
glState.stencilTest = false;
for (i = 0; i < MAX_TEXTURE_UNITS; i++){
glState.textureGen[i][0] = false;
glState.textureGen[i][1] = false;
glState.textureGen[i][2] = false;
glState.textureGen[i][3] = false;
}
glState.cullMode = GL_FRONT;
glState.polygonMode = GL_FILL;
glState.polygonOffsetFactor = 0.0f;
glState.polygonOffsetUnits = 0.0f;
glState.blendSrc = GL_ONE;
glState.blendDst = GL_ZERO;
glState.blendMode = GL_FUNC_ADD;
glState.alphaFunc = GL_GREATER;
glState.alphaFuncRef = 0.0f;
glState.depthFunc = GL_LEQUAL;
glState.stencilFunc[0] = GL_ALWAYS;
glState.stencilFunc[1] = GL_ALWAYS;
glState.stencilFuncRef[0] = 0;
glState.stencilFuncRef[1] = 0;
glState.stencilFuncMask[0] = 255;
glState.stencilFuncMask[1] = 255;
glState.stencilOpFail[0] = GL_KEEP;
glState.stencilOpFail[1] = GL_KEEP;
glState.stencilOpZFail[0] = GL_KEEP;
glState.stencilOpZFail[1] = GL_KEEP;
glState.stencilOpZPass[0] = GL_KEEP;
glState.stencilOpZPass[1] = GL_KEEP;
glState.depthMin = 0.0f;
glState.depthMax = 1.0f;
glState.colorMask[0] = GL_TRUE;
glState.colorMask[1] = GL_TRUE;
glState.colorMask[2] = GL_TRUE;
glState.colorMask[3] = GL_TRUE;
glState.depthMask = GL_TRUE;
glState.stencilMask[0] = 255;
glState.stencilMask[1] = 255;
// Set default state
qglMatrixMode(GL_PROJECTION);
qglLoadIdentity();
qglMatrixMode(GL_MODELVIEW);
qglLoadIdentity();
for (i = MAX_TEXTURE_UNITS - 1; i >= 0; i--){
if (i >= glConfig.maxTextureImageUnits)
continue;
if (i >= glConfig.maxTextureUnits){
qglActiveTexture(GL_TEXTURE0 + i);
qglBindTexture(GL_TEXTURE_2D, 0);
qglBindTexture(GL_TEXTURE_3D, 0);
qglBindTexture(GL_TEXTURE_CUBE_MAP, 0);
qglBindTexture(GL_TEXTURE_2D_ARRAY, 0);
continue;
}
qglActiveTexture(GL_TEXTURE0 + i);
qglMatrixMode(GL_TEXTURE);
qglLoadIdentity();
qglDisable(GL_TEXTURE_2D);
qglDisable(GL_TEXTURE_3D);
qglDisable(GL_TEXTURE_CUBE_MAP);
qglDisable(GL_TEXTURE_2D_ARRAY);
qglBindTexture(GL_TEXTURE_2D, 0);
qglBindTexture(GL_TEXTURE_3D, 0);
qglBindTexture(GL_TEXTURE_CUBE_MAP, 0);
qglBindTexture(GL_TEXTURE_2D_ARRAY, 0);
qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
qglDisable(GL_TEXTURE_GEN_S);
qglDisable(GL_TEXTURE_GEN_T);
qglDisable(GL_TEXTURE_GEN_R);
qglDisable(GL_TEXTURE_GEN_Q);
qglTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
qglTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
qglTexGeni(GL_R, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
qglTexGeni(GL_Q, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
}
qglDisable(GL_TEXTURE_CUBE_MAP_SEAMLESS);
qglUseProgram(0);
qglBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
qglBindBuffer(GL_ARRAY_BUFFER, 0);
qglViewport(0, 0, glConfig.videoWidth, glConfig.videoHeight);
qglEnable(GL_SCISSOR_TEST);
qglScissor(0, 0, glConfig.videoWidth, glConfig.videoHeight);
qglEnable(GL_DEPTH_BOUNDS_TEST_EXT);
qglDepthBoundsEXT(0.0f, 1.0f);
qglFrontFace(GL_CCW);
qglShadeModel(GL_SMOOTH);
qglPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
qglDisable(GL_CULL_FACE);
qglCullFace(GL_FRONT);
qglDisable(GL_POLYGON_OFFSET_FILL);
qglDisable(GL_POLYGON_OFFSET_LINE);
qglPolygonOffset(0.0f, 0.0f);
qglDisable(GL_BLEND);
qglBlendFunc(GL_ONE, GL_ZERO);
qglBlendEquation(GL_FUNC_ADD);
qglDisable(GL_ALPHA_TEST);
qglAlphaFunc(GL_GREATER, 0.0f);
qglDisable(GL_DEPTH_TEST);
qglDepthFunc(GL_LEQUAL);
qglDisable(GL_STENCIL_TEST);
qglStencilFunc(GL_ALWAYS, 128, 255);
qglStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
qglDepthRange(0.0f, 1.0f);
qglColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
qglDepthMask(GL_TRUE);
qglStencilMask(255);
qglDisable(GL_DEPTH_CLAMP);
qglDisable(GL_CLIP_PLANE0);
if (glConfig.multiSamples > 1){
qglDisable(GL_MULTISAMPLE);
qglDisable(GL_SAMPLE_ALPHA_TO_COVERAGE);
}
qglClearColor(0.0f, 0.0f, 0.0f, 1.0f);
qglClearDepth(1.0f);
qglClearStencil(128);
qglEnableClientState(GL_VERTEX_ARRAY);
qglDisableVertexAttribArray(GL_ATTRIB_NORMAL);
qglDisableVertexAttribArray(GL_ATTRIB_TANGENT1);
qglDisableVertexAttribArray(GL_ATTRIB_TANGENT2);
qglDisableVertexAttribArray(GL_ATTRIB_TEXCOORD);
qglDisableVertexAttribArray(GL_ATTRIB_COLOR);
QGL_LogPrintf("--------------------\n");
}
/*
==============
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;
int attribUpload;
R_BindVao(tess.vao);
// orphan old vertex buffer so we don't stall on it
qglBufferData(GL_ARRAY_BUFFER, tess.vao->vertexesSize, NULL, GL_DYNAMIC_DRAW);
// if nothing to set, set everything
if(!(attribBits & ATTR_BITS))
attribBits = ATTR_BITS;
attribUpload = attribBits;
if((attribUpload & ATTR_TEXCOORD) || (attribUpload & 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
attribUpload &= ~ATTR_LIGHTCOORD;
attribUpload |= ATTR_TEXCOORD;
}
for (attribIndex = 0; attribIndex < ATTR_INDEX_COUNT; attribIndex++)
{
uint32_t attribBit = 1 << attribIndex;
vaoAttrib_t *vAtb = &tess.vao->attribs[attribIndex];
if (attribUpload & attribBit)
{
// note: tess has a VBO where stride == size
qglBufferSubData(GL_ARRAY_BUFFER, vAtb->offset, tess.numVertexes * vAtb->stride, tess.attribPointers[attribIndex]);
}
if (attribBits & attribBit)
{
if (!glRefConfig.vertexArrayObject)
qglVertexAttribPointer(attribIndex, vAtb->count, vAtb->type, vAtb->normalized, vAtb->stride, BUFFER_OFFSET(vAtb->offset));
if (!(glState.vertexAttribsEnabled & attribBit))
{
qglEnableVertexAttribArray(attribIndex);
glState.vertexAttribsEnabled |= attribBit;
}
}
else
{
if ((glState.vertexAttribsEnabled & attribBit))
{
qglDisableVertexAttribArray(attribIndex);
glState.vertexAttribsEnabled &= ~attribBit;
}
}
}
// orphan old index buffer so we don't stall on it
qglBufferData(GL_ELEMENT_ARRAY_BUFFER, tess.vao->indexesSize, NULL, GL_DYNAMIC_DRAW);
qglBufferSubData(GL_ELEMENT_ARRAY_BUFFER, 0, tess.numIndexes * sizeof(tess.indexes[0]), tess.indexes);
}
}
