/*
==================
GL_SelectTexture
==================
*/
void GL_SelectTexture (int unit){
if (glState.texUnit == unit)
return;
glState.texUnit = unit;
qglActiveTexture(GL_TEXTURE0 + unit);
}
/*
* R_SelectTexture
*/
void R_SelectTexture(r_texunit_t *texunit) {
if (texunit == r_state.active_texunit)
return;
r_state.active_texunit = texunit;
qglActiveTexture(texunit->texture);
qglClientActiveTexture(texunit->texture);
}
/*
==================
GL_BindMultitexture
==================
*/
void GL_BindMultitexture (texture_t *texture, int unit){
if (texture->frameUsed != rg.frameCount){
texture->frameUsed = rg.frameCount;
rg.pc.textures++;
rg.pc.textureBytes += texture->size;
}
if (glState.texture[unit] == texture)
return;
glState.texture[unit] = texture;
if (glState.texUnit != unit){
glState.texUnit = unit;
qglActiveTexture(GL_TEXTURE0 + unit);
}
qglBindTexture(texture->target, texture->textureId);
}
/*
==================
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");
}
/**
* @brief Dumps OpenGL state for debugging - typically every capability set with glEnable().
*/
void R_DumpOpenGlState (void)
{
#define CAPABILITY( X ) {GL_ ## X, # X}
/* List taken from here: http://www.khronos.org/opengles/sdk/1.1/docs/man/glIsEnabled.xml */
const struct { GLenum idx; const char * text; } openGLCaps[] = {
CAPABILITY(ALPHA_TEST),
CAPABILITY(BLEND),
CAPABILITY(COLOR_ARRAY),
CAPABILITY(COLOR_LOGIC_OP),
CAPABILITY(COLOR_MATERIAL),
CAPABILITY(CULL_FACE),
CAPABILITY(DEPTH_TEST),
CAPABILITY(DITHER),
CAPABILITY(FOG),
CAPABILITY(LIGHTING),
CAPABILITY(LINE_SMOOTH),
CAPABILITY(MULTISAMPLE),
CAPABILITY(NORMAL_ARRAY),
CAPABILITY(NORMALIZE),
CAPABILITY(POINT_SMOOTH),
CAPABILITY(POLYGON_OFFSET_FILL),
CAPABILITY(RESCALE_NORMAL),
CAPABILITY(SAMPLE_ALPHA_TO_COVERAGE),
CAPABILITY(SAMPLE_ALPHA_TO_ONE),
CAPABILITY(SAMPLE_COVERAGE),
CAPABILITY(SCISSOR_TEST),
CAPABILITY(STENCIL_TEST),
CAPABILITY(VERTEX_ARRAY)
};
#undef CAPABILITY
char s[1024] = "";
GLint i;
GLint maxTexUnits = 0;
GLint activeTexUnit = 0;
GLint activeClientTexUnit = 0;
GLint activeTexId = 0;
GLfloat texEnvMode = 0;
const char * texEnvModeStr = "UNKNOWN";
GLfloat color[4];
for (int i = 0; i < lengthof(openGLCaps); i++) {
if (glIsEnabled(openGLCaps[i].idx)) {
Q_strcat(s, openGLCaps[i].text, sizeof(s));
Q_strcat(s, " ", sizeof(s));
}
}
glGetFloatv(GL_CURRENT_COLOR, color);
Com_Printf("OpenGL enabled caps: %s color %f %f %f %f \n", s, color[0], color[1], color[2], color[3]);
glGetIntegerv(GL_ACTIVE_TEXTURE, &activeTexUnit);
glGetIntegerv(GL_CLIENT_ACTIVE_TEXTURE, &activeClientTexUnit);
glGetIntegerv(GL_MAX_TEXTURE_UNITS, &maxTexUnits);
for (i = GL_TEXTURE0; i < GL_TEXTURE0 + maxTexUnits; i++) {
qglActiveTexture(i);
qglClientActiveTexture(i);
strcpy(s, "");
if (glIsEnabled (GL_TEXTURE_2D))
strcat(s, "enabled, ");
if (glIsEnabled (GL_TEXTURE_COORD_ARRAY))
strcat(s, "with texcoord array, ");
if (i == activeTexUnit)
strcat(s, "active, ");
if (i == activeClientTexUnit)
strcat(s, "client active, ");
glGetIntegerv(GL_TEXTURE_BINDING_2D, &activeTexId);
glGetTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, &texEnvMode);
if (fabs(texEnvMode - GL_ADD) < 0.1f)
texEnvModeStr = "ADD";
if (fabs(texEnvMode - GL_MODULATE) < 0.1f)
texEnvModeStr = "MODULATE";
if (fabs(texEnvMode - GL_DECAL) < 0.1f)
texEnvModeStr = "DECAL";
if (fabs(texEnvMode - GL_BLEND) < 0.1f)
texEnvModeStr = "BLEND";
if (fabs(texEnvMode - GL_REPLACE) < 0.1f)
texEnvModeStr = "REPLACE";
if (fabs(texEnvMode - GL_COMBINE) < 0.1f)
texEnvModeStr = "COMBINE";
Com_Printf("Texunit: %d texID %d %s texEnv mode %s\n", i - GL_TEXTURE0, activeTexId, s, texEnvModeStr);
}
qglActiveTexture(activeTexUnit);
qglClientActiveTexture(activeClientTexUnit);
}