/*  ZZ Open GL graphics plugin
 *  Copyright (c)2009 zeydlitz@gmail.com
 *  Based on Zerofrog's ZeroGS KOSMOS (c)2005-2006
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

// ZZogl Shader manipulation functions.

//------------------- Includes
#include "zerogs.h"
#include "ZeroGSShaders/zerogsshaders.h"
#include "zpipe.h"
	
// ----------------- Defines

using namespace ZeroGS; 
//------------------ Constants

// ----------------- Global Variables 
namespace ZeroGS { 
	FRAGMENTSHADER ppsBitBlt[2], ppsBitBltDepth, ppsOne;
	FRAGMENTSHADER ppsBaseTexture, ppsConvert16to32, ppsConvert32to16;
}

// Debug variable, store name of the function that call the shader.
const char* ShaderCallerName = "";
const char* ShaderHandleName = "";

//------------------ Code

// Error handler. Setup in ZZogl_Create once.
void HandleCgError(CGcontext ctx, CGerror err, void* appdata)
{
	ERROR_LOG("%s->%s: %s\n", ShaderCallerName, ShaderHandleName, cgGetErrorString(err));
	const char* listing = cgGetLastListing(g_cgcontext);
	if (listing != NULL) 
		DEBUG_LOG("	last listing: %s\n", listing);
}

// This is a helper of cgGLSetParameter4fv, made for debugging purposes.
// The name could be any string. We must use it on compilation time, because the erronious handler does not
// return it.
void ZZcgSetParameter4fv(CGparameter param, const float* v, const char* name) 
{
	ShaderHandleName = name;
	cgGLSetParameter4fv(param, v);
}

void SetupFragmentProgramParameters(FRAGMENTSHADER* pf, int context, int type)
{
	// uniform parameters
	pf->connect(g_fparamFogColor, "g_fFogColor");

	pf->set_uniform_param(pf->sOneColor, "g_fOneColor");
	pf->set_uniform_param(pf->sBitBltZ, "g_fBitBltZ");
	pf->set_uniform_param(pf->sInvTexDims, "g_fInvTexDims");
	pf->set_uniform_param(pf->fTexAlpha2, "fTexAlpha2");
	pf->set_uniform_param(pf->fTexOffset, "g_fTexOffset");
	pf->set_uniform_param(pf->fTexDims, "g_fTexDims");
	pf->set_uniform_param(pf->fTexBlock, "g_fTexBlock");
	pf->set_uniform_param(pf->fClampExts, "g_fClampExts");
	pf->set_uniform_param(pf->fTexWrapMode, "TexWrapMode");
	pf->set_uniform_param(pf->fRealTexDims, "g_fRealTexDims");
	pf->set_uniform_param(pf->fTestBlack, "g_fTestBlack");
	pf->set_uniform_param(pf->fPageOffset, "g_fPageOffset");
	pf->set_uniform_param(pf->fTexAlpha, "fTexAlpha");

	// textures
	pf->set_texture(ptexBlocks, "g_sBlocks");

	// cg parameter usage is wrong, so do it manually
	switch(type)
	{
		case 3: pf->set_texture(ptexConv16to32, "g_sConv16to32"); break;
		case 4: pf->set_texture(ptexConv32to16, "g_sConv32to16"); break;
		default: pf->set_texture(ptexBilinearBlocks, "g_sBilinearBlocks"); break;
	}

	pf->set_texture(pf->sMemory, "g_sMemory");
	pf->set_texture(pf->sFinal, "g_sSrcFinal");
	pf->set_texture(pf->sBitwiseANDX, "g_sBitwiseANDX");
	pf->set_texture(pf->sBitwiseANDY, "g_sBitwiseANDY");
	pf->set_texture(pf->sCLUT, "g_sCLUT");
	pf->set_texture(pf->sInterlace, "g_sInterlace");

	// set global shader constants
	pf->set_shader_const(Vector(0.5f, (g_GameSettings&GAME_EXACTCOLOR)?0.9f/256.0f:0.5f/256.0f, 0,1/255.0f), "g_fExactColor");
	pf->set_shader_const(Vector(-0.2f, -0.65f, 0.9f, 1.0f / 32767.0f ), "g_fBilinear");
	pf->set_shader_const(Vector(1.0f/256.0f, 1.0004f, 1, 0.5f), "g_fZBias");
	pf->set_shader_const(Vector(0,1, 0.001f, 0.5f), "g_fc0");
	pf->set_shader_const(Vector(1/1024.0f, 0.2f/1024.0f, 1/128.0f, 1/512.0f), "g_fMult");
}

void SetupVertexProgramParameters(CGprogram prog, int context)
{
	CGparameter p;

	p = cgGetNamedParameter(prog, "g_fPosXY");
	if( p != NULL && cgIsParameterUsed(p, prog) == CG_TRUE )
		cgConnectParameter(g_vparamPosXY[context], p);

	// Set Z-test, log or no log;
	if (g_GameSettings&GAME_NOLOGZ) 
	{
		g_vdepth = Vector( 255.0 /256.0f,  255.0/65536.0f, 255.0f/(65535.0f*256.0f), 1.0f/(65536.0f*65536.0f));
		vlogz = Vector( 1.0f, 0.0f, 0.0f, 0.0f);
	}
	else 
	{
		g_vdepth = Vector( 256.0f*65536.0f, 65536.0f, 256.0f, 65536.0f*65536.0f);	
		vlogz = Vector( 0.0f, 1.0f, 0.0f, 0.0f);
	}

	p = cgGetNamedParameter(prog, "g_fZ");
	if( p != NULL && cgIsParameterUsed(p, prog) == CG_TRUE ) {
		cgGLSetParameter4fv(p, g_vdepth);

		p = cgGetNamedParameter(prog, "g_fZMin"); // Switch to flat-z when needed
		if( p != NULL && cgIsParameterUsed(p, prog) == CG_TRUE )  {
			//ERROR_LOG ("Use flat-z\n");
			cgGLSetParameter4fv(p, vlogz);			
		}
		else
			ERROR_LOG ("Shader file version is outdated! Only is log-Z possible\n");
	}

	Vector vnorm = Vector(g_filog32, 0, 0,0);
	p = cgGetNamedParameter(prog, "g_fZNorm");
	if( p != NULL && cgIsParameterUsed(p, prog) == CG_TRUE )
		cgGLSetParameter4fv(p, vnorm);

	p = cgGetNamedParameter(prog, "g_fBilinear");
	if( p != NULL && cgIsParameterUsed(p, prog) == CG_TRUE )
		cgGLSetParameter4fv(p, Vector(-0.2f, -0.65f, 0.9f, 1.0f / 32767.0f ));

	p = cgGetNamedParameter(prog, "g_fZBias");
	if( p != NULL && cgIsParameterUsed(p, prog) == CG_TRUE )
		cgGLSetParameter4fv(p, Vector(1.0f/256.0f, 1.0004f, 1, 0.5f));

	p = cgGetNamedParameter(prog, "g_fc0");
	if( p != NULL && cgIsParameterUsed(p, prog) == CG_TRUE )
		cgGLSetParameter4fv(p, Vector(0,1, 0.001f, 0.5f));
}

#ifndef DEVBUILD

#define LOAD_VS(Index, prog) {						  \
	assert( mapShaderResources.find(Index) != mapShaderResources.end() ); \
	header = mapShaderResources[Index]; \
	assert( (header) != NULL && (header)->index == (Index) ); \
	prog = cgCreateProgram(g_cgcontext, CG_OBJECT, (char*)(s_lpShaderResources + (header)->offset), cgvProf, NULL, NULL); \
	if( !cgIsProgram(prog) ) { \
		ERROR_LOG("Failed to load vs %d: \n%s\n", Index, cgGetLastListing(g_cgcontext)); \
		return false; \
	} \
	cgGLLoadProgram(prog); \
	if( cgGetError() != CG_NO_ERROR ) ERROR_LOG("failed to load program %d\n", Index); \
	SetupVertexProgramParameters(prog, !!(Index&SH_CONTEXT1));			\
} \

#define LOAD_PS(Index, fragment) {  \
	bLoadSuccess = true; \
	assert( mapShaderResources.find(Index) != mapShaderResources.end() ); \
	header = mapShaderResources[Index]; \
	fragment.prog = cgCreateProgram(g_cgcontext, CG_OBJECT, (char*)(s_lpShaderResources + (header)->offset), cgfProf, NULL, NULL); \
	if( !cgIsProgram(fragment.prog) ) { \
		ERROR_LOG("Failed to load ps %d: \n%s\n", Index, cgGetLastListing(g_cgcontext)); \
		return false; \
	} \
	cgGLLoadProgram(fragment.prog); \
	if( cgGetError() != CG_NO_ERROR ) { \
		ERROR_LOG("failed to load program %d\n", Index);		   \
		bLoadSuccess = false; \
	} \
	SetupFragmentProgramParameters(&fragment, !!(Index&SH_CONTEXT1), 0);  \
} \

bool ZeroGS::LoadEffects()
{
	assert( s_lpShaderResources != NULL );

	// process the header
	u32 num = *(u32*)s_lpShaderResources;
	int compressed_size = *(int*)(s_lpShaderResources+4);
	int real_size = *(int*)(s_lpShaderResources+8);
	int out;

	char* pbuffer = (char*)malloc(real_size);
	inf((char*)s_lpShaderResources+12, &pbuffer[0], compressed_size, real_size, &out);
	assert(out == real_size);

	s_lpShaderResources = (u8*)pbuffer;
	SHADERHEADER* header = (SHADERHEADER*)s_lpShaderResources;

	mapShaderResources.clear();
	while(num-- > 0 ) {
		mapShaderResources[header->index] = header;
		++header;
	}

	// clear the textures
	for(int i = 0; i < ARRAY_SIZE(ppsTexture); ++i) {
		SAFE_RELEASE_PROG(ppsTexture[i].prog);
		ppsTexture[i].prog = NULL;
	}
#ifndef _DEBUG
	memset(ppsTexture, 0, sizeof(ppsTexture));
#endif

	return true;
}

// called
bool ZeroGS::LoadExtraEffects()
{
	SHADERHEADER* header;
	bool bLoadSuccess = true;

	const int vsshaders[4] = { SH_REGULARVS, SH_TEXTUREVS, SH_REGULARFOGVS, SH_TEXTUREFOGVS };

	for(int i = 0; i < 4; ++i) {
		LOAD_VS(vsshaders[i], pvs[2*i]);
		LOAD_VS((vsshaders[i] | SH_CONTEXT1), pvs[2*i+1]);
		//if( conf.mrtdepth ) {
			LOAD_VS((vsshaders[i] | SH_WRITEDEPTH), pvs[2*i+8]);
			LOAD_VS((vsshaders[i] | SH_WRITEDEPTH | SH_CONTEXT1), pvs[2*i+8+1]);
//		}
//		else {
//			pvs[2*i+8] = pvs[2*i+8+1] = NULL;
//		}
	}
	
	LOAD_VS(SH_BITBLTVS, pvsBitBlt.prog);
	pvsBitBlt.sBitBltPos = cgGetNamedParameter(pvsBitBlt.prog, "g_fBitBltPos");
	pvsBitBlt.sBitBltTex = cgGetNamedParameter(pvsBitBlt.prog, "g_fBitBltTex");
	pvsBitBlt.fBitBltTrans = cgGetNamedParameter(pvsBitBlt.prog, "g_fBitBltTrans");

	LOAD_PS(SH_REGULARPS, ppsRegular[0]);
	LOAD_PS(SH_REGULARFOGPS, ppsRegular[1]);

	if( conf.mrtdepth ) {
		LOAD_PS(SH_REGULARPS, ppsRegular[2]);
		if( !bLoadSuccess )
			conf.mrtdepth = 0;
		LOAD_PS(SH_REGULARFOGPS, ppsRegular[3]);
		if( !bLoadSuccess )
			conf.mrtdepth = 0;
	}

	LOAD_PS(SH_BITBLTPS, ppsBitBlt[0]);
	LOAD_PS(SH_BITBLTAAPS, ppsBitBlt[1]);
	if( !bLoadSuccess ) {
		ERROR_LOG("Failed to load BitBltAAPS, using BitBltPS\n");
		LOAD_PS(SH_BITBLTPS, ppsBitBlt[1]);
	}
	LOAD_PS(SH_BITBLTDEPTHPS, ppsBitBltDepth);
	LOAD_PS(SH_CRTCTARGPS, ppsCRTCTarg[0]);
	LOAD_PS(SH_CRTCTARGINTERPS, ppsCRTCTarg[1]);
	
	g_bCRTCBilinear = TRUE;
	LOAD_PS(SH_CRTCPS, ppsCRTC[0]);
	if( !bLoadSuccess ) {
		// switch to simpler
		g_bCRTCBilinear = FALSE;
		LOAD_PS(SH_CRTC_NEARESTPS, ppsCRTC[0]);
		LOAD_PS(SH_CRTCINTER_NEARESTPS, ppsCRTC[0]);
	}
	else {
		LOAD_PS(SH_CRTCINTERPS, ppsCRTC[1]);
	}

	if( !bLoadSuccess )
		ERROR_LOG("Failed to create CRTC shaders\n");
	
	LOAD_PS(SH_CRTC24PS, ppsCRTC24[0]);
	LOAD_PS(SH_CRTC24INTERPS, ppsCRTC24[1]);
	LOAD_PS(SH_ZEROPS, ppsOne);
	LOAD_PS(SH_BASETEXTUREPS, ppsBaseTexture);
	LOAD_PS(SH_CONVERT16TO32PS, ppsConvert16to32);
	LOAD_PS(SH_CONVERT32TO16PS, ppsConvert32to16);

	return true;
}

FRAGMENTSHADER* ZeroGS::LoadShadeEffect(int type, int texfilter, int fog, int testaem, int exactcolor, const clampInfo& clamp, int context, bool* pbFailed)
{
	int texwrap;
	assert( texfilter < NUM_FILTERS );

	if(g_nPixelShaderVer&SHADER_REDUCED)
		texfilter = 0;
	assert(!(g_nPixelShaderVer&SHADER_REDUCED) || !exactcolor);

	if( clamp.wms == clamp.wmt ) {
		switch( clamp.wms ) {
			case 0: texwrap = TEXWRAP_REPEAT; break;
			case 1: texwrap = TEXWRAP_CLAMP; break;
			case 2: texwrap = TEXWRAP_CLAMP; break;
			default: texwrap = TEXWRAP_REGION_REPEAT; break;
		}
	}
	else if( clamp.wms==3||clamp.wmt==3)
		texwrap = TEXWRAP_REGION_REPEAT;
	else
		texwrap = TEXWRAP_REPEAT_CLAMP;

	int index = GET_SHADER_INDEX(type, texfilter, texwrap, fog, s_bWriteDepth, testaem, exactcolor, context, 0);
	
	assert( index < ARRAY_SIZE(ppsTexture) );
	FRAGMENTSHADER* pf = ppsTexture+index;
	
	if( pbFailed != NULL ) *pbFailed = false;

	if( pf->prog != NULL ) 
		return pf;

	if( (g_nPixelShaderVer & SHADER_ACCURATE) && mapShaderResources.find(index+NUM_SHADERS*SHADER_ACCURATE) != mapShaderResources.end() )
		index += NUM_SHADERS*SHADER_ACCURATE;

	assert( mapShaderResources.find(index) != mapShaderResources.end() );
	SHADERHEADER* header = mapShaderResources[index];
	if( header == NULL )
		ERROR_LOG("%d %d\n", index, g_nPixelShaderVer);
	assert( header != NULL );

	//DEBUG_LOG("shader:\n%s\n", (char*)(s_lpShaderResources + (header)->offset));
	pf->prog = cgCreateProgram(g_cgcontext, CG_OBJECT, (char*)(s_lpShaderResources + (header)->offset), cgfProf, NULL, NULL);
	if( pf->prog != NULL && cgIsProgram(pf->prog) && cgGetError() == CG_NO_ERROR ) {
		SetupFragmentProgramParameters(pf, context, type);
		cgGLLoadProgram(pf->prog);
		if( cgGetError() != CG_NO_ERROR ) {
//		  cgGLLoadProgram(pf->prog);
//		  if( cgGetError() != CG_NO_ERROR ) {
				ERROR_LOG("Failed to load shader %d,%d,%d,%d\n", type, fog, texfilter, 4*clamp.wms+clamp.wmt);
				if( pbFailed != NULL ) *pbFailed = true;
				return pf;
//		  }
		}
		return pf;
	}

	ERROR_LOG("Failed to create shader %d,%d,%d,%d\n", type, fog, texfilter, 4*clamp.wms+clamp.wmt);
	if( pbFailed != NULL ) *pbFailed = true;

	return NULL;
}
	
#else // not RELEASE_TO_PUBLIC

#define LOAD_VS(name, prog, shaderver) { \
	prog = cgCreateProgramFromFile(g_cgcontext, CG_SOURCE, EFFECT_NAME, shaderver, name, args); \
	if( !cgIsProgram(prog) ) { \
		ERROR_LOG("Failed to load vs %s: \n%s\n", name, cgGetLastListing(g_cgcontext)); \
		return false; \
	} \
	cgGLLoadProgram(prog); \
	if( cgGetError() != CG_NO_ERROR ) ERROR_LOG("failed to load program %s\n", name); \
	SetupVertexProgramParameters(prog, args[0]==context1); \
} \

#ifdef _DEBUG
#define SET_PSFILENAME(frag, name) frag.filename = name
#else
#define SET_PSFILENAME(frag, name)
#endif

#define LOAD_PS(name, fragment, shaderver) { \
	bLoadSuccess = true; \
	fragment.prog = cgCreateProgramFromFile(g_cgcontext, CG_SOURCE, EFFECT_NAME, shaderver, name, args); \
	if( !cgIsProgram(fragment.prog) ) { \
		ERROR_LOG("Failed to load ps %s: \n%s\n", name, cgGetLastListing(g_cgcontext)); \
		return false; \
	} \
	cgGLLoadProgram(fragment.prog); \
	if( cgGetError() != CG_NO_ERROR ) { \
		ERROR_LOG("failed to load program %s\n", name);		   \
		bLoadSuccess = false; \
	} \
	SetupFragmentProgramParameters(&fragment, args[0]==context1, 0);  \
	SET_PSFILENAME(fragment, name); \
} \

bool ZeroGS::LoadEffects()
{
	// clear the textures
	for(int i = 0; i < ARRAY_SIZE(ppsTexture); ++i) {
		SAFE_RELEASE_PROG(ppsTexture[i].prog);
	}

#ifndef _DEBUG
	memset(ppsTexture, 0, sizeof(ppsTexture));
#endif

	return true;
}

bool ZeroGS::LoadExtraEffects()
{
	const char* args[] = { NULL , NULL, NULL, NULL };
	char context0[255], context1[255];
	sprintf(context0, "-I%sctx0", EFFECT_DIR);
	sprintf(context1, "-I%sctx1", EFFECT_DIR);
	char* write_depth = "-DWRITE_DEPTH";
	bool bLoadSuccess = true;

	const char* pvsshaders[4] = { "RegularVS", "TextureVS", "RegularFogVS", "TextureFogVS" };

	for(int i = 0; i < 4; ++i) {
		args[0] = context0;
		args[1] = NULL;
		LOAD_VS(pvsshaders[i], pvs[2*i], cgvProf);
		args[0] = context1;
		LOAD_VS(pvsshaders[i], pvs[2*i+1], cgvProf);

		//if( conf.mrtdepth ) {
			args[0] = context0;
			args[1] = write_depth;
			LOAD_VS(pvsshaders[i], pvs[2*i+8], cgvProf);
			args[0] = context1;
			LOAD_VS(pvsshaders[i], pvs[2*i+8+1], cgvProf);
//		}
//		else {
//			pvs[2*i+8] = pvs[2*i+8+1] = NULL;
//		}
	}

	args[0] = context0;
	args[1] = NULL;
	LOAD_VS("BitBltVS", pvsBitBlt.prog, cgvProf);
	pvsBitBlt.sBitBltPos = cgGetNamedParameter(pvsBitBlt.prog, "g_fBitBltPos");
	pvsBitBlt.sBitBltTex = cgGetNamedParameter(pvsBitBlt.prog, "g_fBitBltTex");
	pvsBitBlt.fBitBltTrans = cgGetNamedParameter(pvsBitBlt.prog, "g_fBitBltTrans");

	LOAD_PS("RegularPS", ppsRegular[0], cgfProf);
	LOAD_PS("RegularFogPS", ppsRegular[1], cgfProf);

	if( conf.mrtdepth ) {
		args[0] = context0;
		args[1] = write_depth;
		LOAD_PS("RegularPS", ppsRegular[2], cgfProf);
		if( !bLoadSuccess )
			conf.mrtdepth = 0;
		LOAD_PS("RegularFogPS", ppsRegular[3], cgfProf);
		if( !bLoadSuccess )
			conf.mrtdepth = 0;
	}

	LOAD_PS("BitBltPS", ppsBitBlt[0], cgfProf);
	LOAD_PS("BitBltAAPS", ppsBitBlt[1], cgfProf);
	if( !bLoadSuccess ) {
		ERROR_LOG("Failed to load BitBltAAPS, using BitBltPS\n");
		LOAD_PS("BitBltPS", ppsBitBlt[1], cgfProf);
	}

	LOAD_PS("BitBltDepthPS", ppsBitBltDepth, cgfProf);
	LOAD_PS("CRTCTargPS", ppsCRTCTarg[0], cgfProf); 
	LOAD_PS("CRTCTargInterPS", ppsCRTCTarg[1], cgfProf);
	
	g_bCRTCBilinear = TRUE;
	LOAD_PS("CRTCPS", ppsCRTC[0], cgfProf);
	if( !bLoadSuccess ) {
		// switch to simpler
		g_bCRTCBilinear = FALSE;
		LOAD_PS("CRTCPS_Nearest", ppsCRTC[0], cgfProf);
		LOAD_PS("CRTCInterPS_Nearest", ppsCRTC[0], cgfProf);
	}
	else {
		LOAD_PS("CRTCInterPS", ppsCRTC[1], cgfProf);
	}

	if( !bLoadSuccess )
		ERROR_LOG("Failed to create CRTC shaders\n");
	
	LOAD_PS("CRTC24PS", ppsCRTC24[0], cgfProf); LOAD_PS("CRTC24InterPS", ppsCRTC24[1], cgfProf);
	LOAD_PS("ZeroPS", ppsOne, cgfProf);
	LOAD_PS("BaseTexturePS", ppsBaseTexture, cgfProf);
	LOAD_PS("Convert16to32PS", ppsConvert16to32, cgfProf);
	LOAD_PS("Convert32to16PS", ppsConvert32to16, cgfProf);

//	if( !conf.mrtdepth ) {
//		ERROR_LOG("Disabling MRT depth writing\n");
//		s_bWriteDepth = FALSE;
//	}

	return true;
}

FRAGMENTSHADER* ZeroGS::LoadShadeEffect(int type, int texfilter, int fog, int testaem, int exactcolor, const clampInfo& clamp, int context, bool* pbFailed)
{
	int texwrap;
	
	assert( texfilter < NUM_FILTERS );
	//assert( g_nPixelShaderVer == SHADER_30 );
	if( clamp.wms == clamp.wmt ) {
		switch( clamp.wms ) {
			case 0: texwrap = TEXWRAP_REPEAT; break;
			case 1: texwrap = TEXWRAP_CLAMP; break;
			case 2: texwrap = TEXWRAP_CLAMP; break;
			default:
				texwrap = TEXWRAP_REGION_REPEAT; break;
		}
	}
	else if( clamp.wms==3||clamp.wmt==3)
		texwrap = TEXWRAP_REGION_REPEAT;
	else
		texwrap = TEXWRAP_REPEAT_CLAMP;

	int index = GET_SHADER_INDEX(type, texfilter, texwrap, fog, s_bWriteDepth, testaem, exactcolor, context, 0);

	if( pbFailed != NULL ) *pbFailed = false;

	FRAGMENTSHADER* pf = ppsTexture+index;

	if( pf->prog != NULL ) 
		return pf;
	
	pf->prog = LoadShaderFromType(EFFECT_DIR, EFFECT_NAME, type, texfilter, texwrap, fog, s_bWriteDepth, testaem, exactcolor, g_nPixelShaderVer, context);

	if( pf->prog != NULL ) {
#ifdef _DEBUG
		char str[255];
		sprintf(str, "Texture%s%d_%sPS", fog?"Fog":"", texfilter, g_pTexTypes[type]);
		pf->filename = str;
#endif
		SetupFragmentProgramParameters(pf, context, type);
		cgGLLoadProgram(pf->prog);
		if( cgGetError() != CG_NO_ERROR ) {
			// try again
//			cgGLLoadProgram(pf->prog);
//			if( cgGetError() != CG_NO_ERROR ) {
				ERROR_LOG("Failed to load shader %d,%d,%d,%d\n", type, fog, texfilter, 4*clamp.wms+clamp.wmt);
				if( pbFailed != NULL ) *pbFailed = true;
				//assert(0);
				// NULL makes things crash
				return pf;
//			}
		}
		return pf;
	}

	ERROR_LOG("Failed to create shader %d,%d,%d,%d\n", type, fog, texfilter, 4*clamp.wms+clamp.wmt);
	if( pbFailed != NULL ) *pbFailed = true;

	return NULL;
}

#endif // RELEASE_TO_PUBLIC