void
R_SetDefaultState(void)
{
qglClearColor(1, 0, 0.5, 0.5);
qglCullFace(GL_FRONT);
qglEnable(GL_TEXTURE_2D);
qglEnable(GL_ALPHA_TEST);
qglAlphaFunc(GL_GREATER, 0.666);
qglDisable(GL_DEPTH_TEST);
qglDisable(GL_CULL_FACE);
qglDisable(GL_BLEND);
qglColor4f(1, 1, 1, 1);
qglPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
qglShadeModel(GL_FLAT);
R_TextureMode(gl_texturemode->string);
R_TextureAlphaMode(gl_texturealphamode->string);
R_TextureSolidMode(gl_texturesolidmode->string);
qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min);
qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max);
qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
qglTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
qglBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
R_TexEnv(GL_REPLACE);
if (qglPointParameterfEXT)
{
float attenuations[3];
attenuations[0] = gl_particle_att_a->value;
attenuations[1] = gl_particle_att_b->value;
attenuations[2] = gl_particle_att_c->value;
/* GL_POINT_SMOOTH is not implemented by some OpenGL
drivers, especially the crappy Mesa3D backends like
i915.so. That the points are squares and not circles
is not a problem by Quake II! */
qglEnable(GL_POINT_SMOOTH);
qglPointParameterfEXT(GL_POINT_SIZE_MIN_EXT,
gl_particle_min_size->value);
qglPointParameterfEXT(GL_POINT_SIZE_MAX_EXT,
gl_particle_max_size->value);
qglPointParameterfvEXT(GL_DISTANCE_ATTENUATION_EXT, attenuations);
}
if (qglColorTableEXT && gl_ext_palettedtexture->value)
{
qglEnable(GL_SHARED_TEXTURE_PALETTE_EXT);
R_SetTexturePalette(d_8to24table);
}
}
/**
* @sa R_RenderFrame
* @sa R_EndFrame
*/
void R_BeginFrame (void)
{
r_locals.frame++;
/* avoid overflows, negatives and zero are reserved */
if (r_locals.frame > 0xffff)
r_locals.frame = 1;
if (Com_IsRenderModified()) {
Com_Printf("Modified render related cvars\n");
if (Cvar_PendingCvars(CVAR_R_PROGRAMS))
R_RestartPrograms_f();
/* prevent reloading of some rendering cvars */
Cvar_ClearVars(CVAR_R_MASK);
Com_SetRenderModified(false);
}
if (r_anisotropic->modified) {
if (r_anisotropic->integer > r_config.maxAnisotropic) {
Com_Printf("...max GL_EXT_texture_filter_anisotropic value is %i\n", r_config.maxAnisotropic);
Cvar_SetValue("r_anisotropic", r_config.maxAnisotropic);
}
/*R_UpdateAnisotropy();*/
r_anisotropic->modified = false;
}
/* draw buffer stuff */
if (r_drawbuffer->modified) {
r_drawbuffer->modified = false;
if (Q_strcasecmp(r_drawbuffer->string, "GL_FRONT") == 0)
glDrawBuffer(GL_FRONT);
else
glDrawBuffer(GL_BACK);
R_CheckError();
}
/* texturemode stuff */
/* Realtime set level of anisotropy filtering and change texture lod bias */
if (r_texturemode->modified) {
R_TextureMode(r_texturemode->string);
r_texturemode->modified = false;
}
if (r_texturealphamode->modified) {
R_TextureAlphaMode(r_texturealphamode->string);
r_texturealphamode->modified = false;
}
if (r_texturesolidmode->modified) {
R_TextureSolidMode(r_texturesolidmode->string);
r_texturesolidmode->modified = false;
}
/* threads */
if (r_threads->modified) {
if (r_threads->integer)
R_InitThreads();
else
R_ShutdownThreads();
r_threads->modified = false;
}
R_Setup2D();
/* clear screen if desired */
R_Clear();
}
