void SetExtGLFuncs(void)
{
//----------------------------------------------------//
SetFixes(); // update fix infos
//----------------------------------------------------//
{
if(bAdvancedBlend) bUseMultiPass=TRUE; // -> pseudo-advanced with 2 passes
else bUseMultiPass=FALSE; // -> or simple 'bright color' mode
// bGLBlend=FALSE; // -> no ext blending!
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); glError();
}
if(bOpaquePass) // opaque mode?
{
if(dwActFixes&32)
{
TCF[0]=CP8RGBA_0;
PalTexturedColourFn=CP8RGBA; // -> init col func
}
else
{
TCF[0]=XP8RGBA_0;
PalTexturedColourFn=XP8RGBA; // -> init col func
}
TCF[1]=XP8RGBA_1;
glAlphaFuncx(GL_GREATER,0.49f); glError();
}
else // no opaque mode?
{
TCF[0]=TCF[1]=P8RGBA;
PalTexturedColourFn=P8RGBA; // -> init col func
glAlphaFuncx(GL_NOTEQUAL,0); glError(); // --> set alpha func
}
//----------------------------------------------------//
LoadSubTexFn=LoadSubTexturePageSort; // init load tex ptr
bBlendEnable=FALSE; // init blending: off
glDisable(GL_BLEND); glError();
SetScanTrans(); // init scan lines (if wanted)
}
void SetExtGLFuncs(void)
{
//----------------------------------------------------//
SetFixes(); // update fix infos
//----------------------------------------------------//
if(iUseExts && !(dwActFixes&1024) && // extensions wanted? and not turned off by game fix?
strstr((char *)glGetString(GL_EXTENSIONS), // and blend_subtract available?
"GL_EXT_blend_subtract"))
{ // -> get ogl blend function pointer
glBlendEquationEXTEx=(PFNGLBLENDEQU)glBlendEquationEXT;
}
else // no subtract blending?
{
if(glBlendEquationEXTEx) // -> change to additive blending (if subract was active)
glBlendEquationEXTEx(FUNC_ADD_EXT);
glBlendEquationEXTEx=(PFNGLBLENDEQU)NULL; // -> no more blend function pointer
}
//----------------------------------------------------//
if(iUseExts && bAdvancedBlend && // advanced blending wanted ?
strstr((char *)glGetString(GL_EXTENSIONS), // and extension avail?
"GL_EXT_texture_env_combine"))
{
bUseMultiPass=FALSE;bGLBlend=TRUE; // -> no need for 2 passes, perfect
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, COMBINE_EXT);
glTexEnvf(GL_TEXTURE_ENV, COMBINE_RGB_EXT, GL_MODULATE);
glTexEnvf(GL_TEXTURE_ENV, COMBINE_ALPHA_EXT, GL_MODULATE);
glTexEnvf(GL_TEXTURE_ENV, RGB_SCALE_EXT, 2.0f);
}
else // no advanced blending wanted/available:
{
if(bAdvancedBlend) bUseMultiPass=TRUE; // -> pseudo-advanced with 2 passes
else bUseMultiPass=FALSE; // -> or simple 'bright color' mode
bGLBlend=FALSE; // -> no ext blending!
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
}
//----------------------------------------------------//
// init standard tex quality 0-2, and big alpha mode 3
if(!(dwActFixes&0x4000) && iFilterType && iTexQuality>=3)
bSmallAlpha=TRUE;
else bSmallAlpha=FALSE;
if(bOpaquePass) // opaque mode?
{
if(dwActFixes&32)
{
TCF[0]=CP8RGBA_0;
PalTexturedColourFn=CP8RGBA; // -> init col func
}
else
{
TCF[0]=XP8RGBA_0;
PalTexturedColourFn=XP8RGBA; // -> init col func
}
TCF[1]=XP8RGBA_1;
glAlphaFunc(GL_GREATER,0.49f);
}
else // no opaque mode?
{
TCF[0]=TCF[1]=P8RGBA;
PalTexturedColourFn=P8RGBA; // -> init col func
glAlphaFunc(GL_NOTEQUAL,0); // --> set alpha func
}
//----------------------------------------------------//
LoadSubTexFn=LoadSubTexturePageSort; // init load tex ptr
giWantedFMT=GL_RGBA; // init ogl tex format
switch(iTexQuality) // -> quality:
{
//--------------------------------------------------//
case 0: // -> don't care
giWantedRGBA=4;
giWantedTYPE=GL_UNSIGNED_BYTE;
break;
//--------------------------------------------------//
case 1: // -> R4G4B4A4
if(bGLExt)
{
giWantedRGBA=GL_RGBA4;
giWantedTYPE=GL_UNSIGNED_SHORT_4_4_4_4_EXT;
LoadSubTexFn=LoadPackedSubTexturePageSort;
if(bOpaquePass)
{
if(dwActFixes&32) PTCF[0]=CP4RGBA_0;
else PTCF[0]=XP4RGBA_0;
PTCF[1]=XP4RGBA_1;
}
else
{
PTCF[0]=PTCF[1]=P4RGBA;
}
}
else
{
giWantedRGBA=GL_RGBA4;
giWantedTYPE=GL_UNSIGNED_BYTE;
}
break;
//--------------------------------------------------//
case 2: // -> R5B5G5A1
if(bGLExt)
{
giWantedRGBA=GL_RGB5_A1;
giWantedTYPE=GL_UNSIGNED_SHORT_5_5_5_1_EXT;
LoadSubTexFn=LoadPackedSubTexturePageSort;
if(bOpaquePass)
{
if(dwActFixes&32) PTCF[0]=CP5RGBA_0;
else PTCF[0]=XP5RGBA_0;
PTCF[1]=XP5RGBA_1;
}
else
{
PTCF[0]=PTCF[1]=P5RGBA;
}
}
else
{
giWantedRGBA=GL_RGB5_A1;giWantedTYPE=GL_UNSIGNED_BYTE;
}
break;
//--------------------------------------------------//
case 3: // -> R8G8B8A8
giWantedRGBA=GL_RGBA8;
giWantedTYPE=GL_UNSIGNED_BYTE;
if(bSmallAlpha)
{
if(bOpaquePass) // opaque mode?
{
if(dwActFixes&32) {TCF[0]=CP8RGBAEx_0;PalTexturedColourFn=CP8RGBAEx;}
else {TCF[0]=XP8RGBAEx_0;PalTexturedColourFn=XP8RGBAEx;}
TCF[1]=XP8RGBAEx_1;
}
}
break;
//--------------------------------------------------//
case 4: // -> R8G8B8A8
giWantedRGBA = GL_RGBA8;
giWantedTYPE = GL_UNSIGNED_BYTE;
if(strstr((char *)glGetString(GL_EXTENSIONS), // and extension avail?
"GL_EXT_bgra"))
{
giWantedFMT = GL_BGRA_EXT;
if(bOpaquePass) // opaque mode?
{
if(bSmallAlpha)
{
if(dwActFixes&32) {TCF[0]=CP8BGRAEx_0;PalTexturedColourFn=CP8RGBAEx;}
else {TCF[0]=XP8BGRAEx_0;PalTexturedColourFn=XP8RGBAEx;}
TCF[1]=XP8BGRAEx_1;
}
else
{
if(dwActFixes&32) {TCF[0]=CP8BGRA_0;PalTexturedColourFn=CP8RGBA;}
else {TCF[0]=XP8BGRA_0;PalTexturedColourFn=XP8RGBA;}
TCF[1]=XP8BGRA_1;
}
}
else // no opaque mode?
{
TCF[0]=TCF[1]=P8BGRA; // -> init col func
}
}
else
{
iTexQuality=3;
if(bSmallAlpha)
{
if(bOpaquePass) // opaque mode?
{
if(dwActFixes&32) {TCF[0]=CP8RGBAEx_0;PalTexturedColourFn=CP8RGBAEx;}
else {TCF[0]=XP8RGBAEx_0;PalTexturedColourFn=XP8RGBAEx;}
TCF[1]=XP8RGBAEx_1;
}
}
}
break;
//--------------------------------------------------//
}
bBlendEnable=FALSE; // init blending: off
glDisable(GL_BLEND);
SetScanTrans(); // init scan lines (if wanted)
}
