/*
* 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);
}
/**
* @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);
}