/
PixelShaderGen.cpp
1357 lines (1183 loc) · 46.5 KB
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PixelShaderGen.cpp
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// Copyright (C) 2003 Dolphin Project.
// 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, version 2.0.
// 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 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
#include <stdio.h>
#include <cmath>
#include <assert.h>
#include <locale.h>
#include "LightingShaderGen.h"
#include "PixelShaderGen.h"
#include "XFMemory.h" // for texture projection mode
#include "BPMemory.h"
#include "VideoConfig.h"
#include "NativeVertexFormat.h"
static void StageHash(u32 stage, u32* out)
{
out[0] |= bpmem.combiners[stage].colorC.hex & 0xFFFFFF; // 24
u32 alphaC = bpmem.combiners[stage].alphaC.hex & 0xFFFFF0; // 24, strip out tswap and rswap for now
out[0] |= (alphaC&0xF0) << 24; // 8
out[1] |= alphaC >> 8; // 16
// reserve 3 bits for bpmem.tevorders[stage/2].getTexMap
out[1] |= bpmem.tevorders[stage/2].getTexCoord(stage&1) << 19; // 3
out[1] |= bpmem.tevorders[stage/2].getEnable(stage&1) << 22; // 1
// reserve 3 bits for bpmem.tevorders[stage/2].getColorChan
bool bHasIndStage = bpmem.tevind[stage].IsActive() && bpmem.tevind[stage].bt < bpmem.genMode.numindstages;
out[2] |= bHasIndStage << 2; // 1
bool needstexcoord = false;
if (bHasIndStage)
{
out[2] |= (bpmem.tevind[stage].hex & 0x17FFFF) << 3; // 21, TODO: needs an explanation
needstexcoord = true;
}
TevStageCombiner::ColorCombiner& cc = bpmem.combiners[stage].colorC;
TevStageCombiner::AlphaCombiner& ac = bpmem.combiners[stage].alphaC;
if(cc.a == TEVCOLORARG_RASA || cc.a == TEVCOLORARG_RASC
|| cc.b == TEVCOLORARG_RASA || cc.b == TEVCOLORARG_RASC
|| cc.c == TEVCOLORARG_RASA || cc.c == TEVCOLORARG_RASC
|| cc.d == TEVCOLORARG_RASA || cc.d == TEVCOLORARG_RASC
|| ac.a == TEVALPHAARG_RASA || ac.b == TEVALPHAARG_RASA
|| ac.c == TEVALPHAARG_RASA || ac.d == TEVALPHAARG_RASA)
{
out[0] |= bpmem.combiners[stage].alphaC.rswap;
out[2] |= bpmem.tevksel[bpmem.combiners[stage].alphaC.rswap*2].swap1 << 24; // 2
out[2] |= bpmem.tevksel[bpmem.combiners[stage].alphaC.rswap*2].swap2 << 26; // 2
out[2] |= bpmem.tevksel[bpmem.combiners[stage].alphaC.rswap*2+1].swap1 << 28; // 2
out[2] |= bpmem.tevksel[bpmem.combiners[stage].alphaC.rswap*2+1].swap2 << 30; // 2
out[1] |= (bpmem.tevorders[stage/2].getColorChan(stage&1)&1) << 23;
out[2] |= (bpmem.tevorders[stage/2].getColorChan(stage&1)&0x6) >> 1;
}
out[3] |= bpmem.tevorders[stage/2].getEnable(stage&1);
if (bpmem.tevorders[stage/2].getEnable(stage&1))
{
if (bHasIndStage) needstexcoord = true;
out[0] |= bpmem.combiners[stage].alphaC.tswap;
out[3] |= bpmem.tevksel[bpmem.combiners[stage].alphaC.tswap*2].swap1 << 1; // 2
out[3] |= bpmem.tevksel[bpmem.combiners[stage].alphaC.tswap*2].swap2 << 3; // 2
out[3] |= bpmem.tevksel[bpmem.combiners[stage].alphaC.tswap*2+1].swap1 << 5; // 2
out[3] |= bpmem.tevksel[bpmem.combiners[stage].alphaC.tswap*2+1].swap2 << 7; // 2
out[1] |= bpmem.tevorders[stage/2].getTexMap(stage&1) << 16;
}
if (cc.a == TEVCOLORARG_KONST || cc.b == TEVCOLORARG_KONST || cc.c == TEVCOLORARG_KONST || cc.d == TEVCOLORARG_KONST
|| ac.a == TEVALPHAARG_KONST || ac.b == TEVALPHAARG_KONST || ac.c == TEVALPHAARG_KONST || ac.d == TEVALPHAARG_KONST)
{
out[3] |= bpmem.tevksel[stage/2].getKC(stage&1) << 9; // 5
out[3] |= bpmem.tevksel[stage/2].getKA(stage&1) << 14; // 5
}
if (needstexcoord)
{
out[1] |= bpmem.tevorders[stage/2].getTexCoord(stage&1) << 16;
}
}
// Mash together all the inputs that contribute to the code of a generated pixel shader into
// a unique identifier, basically containing all the bits. Yup, it's a lot ....
// It would likely be a lot more efficient to build this incrementally as the attributes
// are set...
void GetPixelShaderId(PIXELSHADERUID *uid, DSTALPHA_MODE dstAlphaMode, u32 components)
{
memset(uid->values, 0, sizeof(uid->values));
uid->values[0] |= bpmem.genMode.numtevstages; // 4
uid->values[0] |= bpmem.genMode.numtexgens << 4; // 4
uid->values[0] |= dstAlphaMode << 8; // 2
bool enablePL = g_ActiveConfig.bEnablePixelLighting && g_ActiveConfig.backend_info.bSupportsPixelLighting;
uid->values[0] |= enablePL << 10; // 1
if (!enablePL) uid->values[0] |= xfregs.numTexGen.numTexGens << 11; // 4
AlphaTest::TEST_RESULT alphaPreTest = bpmem.alpha_test.TestResult();
uid->values[0] |= alphaPreTest << 15; // 2
// numtexgens should be <= 8
for (unsigned int i = 0; i < bpmem.genMode.numtexgens; ++i)
uid->values[0] |= xfregs.texMtxInfo[i].projection << (17+i); // 1
uid->values[1] = bpmem.genMode.numindstages; // 3
u32 indirectStagesUsed = 0;
for (unsigned int i = 0; i < bpmem.genMode.numindstages; ++i)
if (bpmem.tevind[i].IsActive() && bpmem.tevind[i].bt < bpmem.genMode.numindstages)
indirectStagesUsed |= (1 << bpmem.tevind[i].bt);
assert(indirectStagesUsed == (indirectStagesUsed & 0xF));
uid->values[1] |= indirectStagesUsed << 3; // 4;
for (unsigned int i = 0; i < bpmem.genMode.numindstages; ++i)
{
if (indirectStagesUsed & (1 << i))
{
uid->values[1] |= (bpmem.tevindref.getTexCoord(i) < bpmem.genMode.numtexgens) << (7 + 3*i); // 1
if (bpmem.tevindref.getTexCoord(i) < bpmem.genMode.numtexgens)
uid->values[1] |= bpmem.tevindref.getTexCoord(i) << (8 + 3*i); // 2
}
}
u32* ptr = &uid->values[2];
for (unsigned int i = 0; i < bpmem.genMode.numtevstages+1u; ++i)
{
StageHash(i, ptr);
ptr += 4; // max: ptr = &uid->values[66]
}
ptr[0] |= bpmem.alpha_test.comp0; // 3
ptr[0] |= bpmem.alpha_test.comp1 << 3; // 3
ptr[0] |= bpmem.alpha_test.logic << 6; // 2
ptr[0] |= bpmem.ztex2.op << 8; // 2
ptr[0] |= bpmem.zcontrol.early_ztest << 10; // 1
ptr[0] |= bpmem.zmode.testenable << 11; // 1
ptr[0] |= bpmem.zmode.updateenable << 12; // 1
if (dstAlphaMode != DSTALPHA_ALPHA_PASS)
{
ptr[0] |= bpmem.fog.c_proj_fsel.fsel << 13; // 3
if (bpmem.fog.c_proj_fsel.fsel != 0)
{
ptr[0] |= bpmem.fog.c_proj_fsel.proj << 16; // 1
ptr[0] |= bpmem.fogRange.Base.Enabled << 17; // 1
}
}
++ptr;
if (enablePL)
{
ptr += GetLightingShaderId(ptr);
*ptr++ = components;
}
uid->num_values = int(ptr - uid->values);
}
void GetSafePixelShaderId(PIXELSHADERUIDSAFE *uid, DSTALPHA_MODE dstAlphaMode, u32 components)
{
memset(uid->values, 0, sizeof(uid->values));
u32* ptr = uid->values;
*ptr++ = dstAlphaMode; // 0
*ptr++ = bpmem.genMode.hex; // 1
*ptr++ = bpmem.ztex2.hex; // 2
*ptr++ = bpmem.zcontrol.hex; // 3
*ptr++ = bpmem.zmode.hex; // 4
*ptr++ = g_ActiveConfig.bEnablePixelLighting && g_ActiveConfig.backend_info.bSupportsPixelLighting; // 5
*ptr++ = xfregs.numTexGen.hex; // 6
if (g_ActiveConfig.bEnablePixelLighting && g_ActiveConfig.backend_info.bSupportsPixelLighting)
{
*ptr++ = xfregs.color[0].hex;
*ptr++ = xfregs.alpha[0].hex;
*ptr++ = xfregs.color[1].hex;
*ptr++ = xfregs.alpha[1].hex;
*ptr++ = components;
}
for (unsigned int i = 0; i < 8; ++i)
*ptr++ = xfregs.texMtxInfo[i].hex; // 7-14
for (unsigned int i = 0; i < 16; ++i)
*ptr++ = bpmem.tevind[i].hex; // 15-30
*ptr++ = bpmem.tevindref.hex; // 31
for (u32 i = 0; i < bpmem.genMode.numtevstages+1u; ++i) // up to 16 times
{
*ptr++ = bpmem.combiners[i].colorC.hex; // 32+5*i
*ptr++ = bpmem.combiners[i].alphaC.hex; // 33+5*i
*ptr++ = bpmem.tevind[i].hex; // 34+5*i
*ptr++ = bpmem.tevksel[i/2].hex; // 35+5*i
*ptr++ = bpmem.tevorders[i/2].hex; // 36+5*i
}
ptr = &uid->values[112];
*ptr++ = bpmem.alpha_test.hex; // 112
*ptr++ = bpmem.fog.c_proj_fsel.hex; // 113
*ptr++ = bpmem.fogRange.Base.hex; // 114
_assert_((ptr - uid->values) == uid->GetNumValues());
}
void ValidatePixelShaderIDs(API_TYPE api, PIXELSHADERUIDSAFE old_id, const std::string& old_code, DSTALPHA_MODE dstAlphaMode, u32 components)
{
if (!g_ActiveConfig.bEnableShaderDebugging)
return;
PIXELSHADERUIDSAFE new_id;
GetSafePixelShaderId(&new_id, dstAlphaMode, components);
if (!(old_id == new_id))
{
std::string new_code(GeneratePixelShaderCode(dstAlphaMode, api, components));
if (old_code != new_code)
{
_assert_(old_id.GetNumValues() == new_id.GetNumValues());
char msg[8192];
char* ptr = msg;
ptr += sprintf(ptr, "Pixel shader IDs matched but unique IDs did not!\nUnique IDs (old <-> new):\n");
const int N = new_id.GetNumValues();
for (int i = 0; i < N/2; ++i)
ptr += sprintf(ptr, "%02d, %08X %08X | %08X %08X\n", 2*i, old_id.values[2*i], old_id.values[2*i+1],
new_id.values[2*i], new_id.values[2*i+1]);
if (N % 2)
ptr += sprintf(ptr, "%02d, %08X | %08X\n", N-1, old_id.values[N-1], new_id.values[N-1]);
static int num_failures = 0;
char szTemp[MAX_PATH];
sprintf(szTemp, "%spsuid_mismatch_%04i.txt", File::GetUserPath(D_DUMP_IDX).c_str(), num_failures++);
std::ofstream file;
OpenFStream(file, szTemp, std::ios_base::out);
file << msg;
file << "\n\nOld shader code:\n" << old_code;
file << "\n\nNew shader code:\n" << new_code;
file.close();
PanicAlert("Unique pixel shader ID mismatch!\n\nReport this to the devs, along with the contents of %s.", szTemp);
}
}
}
// old tev->pixelshader notes
//
// color for this stage (alpha, color) is given by bpmem.tevorders[0].colorchan0
// konstant for this stage (alpha, color) is given by bpmem.tevksel
// inputs are given by bpmem.combiners[0].colorC.a/b/c/d << could be current chan color
// according to GXTevColorArg table above
// output is given by .outreg
// tevtemp is set according to swapmodetables and
static void WriteStage(char *&p, int n, API_TYPE ApiType);
static void SampleTexture(char *&p, const char *destination, const char *texcoords, const char *texswap, int texmap, API_TYPE ApiType);
// static void WriteAlphaCompare(char *&p, int num, int comp);
static void WriteAlphaTest(char *&p, API_TYPE ApiType,DSTALPHA_MODE dstAlphaMode, bool per_pixel_depth);
static void WriteFog(char *&p);
static const char *tevKSelTableC[] = // KCSEL
{
"1.0f,1.0f,1.0f", // 1 = 0x00
"0.875f,0.875f,0.875f", // 7_8 = 0x01
"0.75f,0.75f,0.75f", // 3_4 = 0x02
"0.625f,0.625f,0.625f", // 5_8 = 0x03
"0.5f,0.5f,0.5f", // 1_2 = 0x04
"0.375f,0.375f,0.375f", // 3_8 = 0x05
"0.25f,0.25f,0.25f", // 1_4 = 0x06
"0.125f,0.125f,0.125f", // 1_8 = 0x07
"ERROR1", // 0x08
"ERROR2", // 0x09
"ERROR3", // 0x0a
"ERROR4", // 0x0b
I_KCOLORS"[0].rgb", // K0 = 0x0C
I_KCOLORS"[1].rgb", // K1 = 0x0D
I_KCOLORS"[2].rgb", // K2 = 0x0E
I_KCOLORS"[3].rgb", // K3 = 0x0F
I_KCOLORS"[0].rrr", // K0_R = 0x10
I_KCOLORS"[1].rrr", // K1_R = 0x11
I_KCOLORS"[2].rrr", // K2_R = 0x12
I_KCOLORS"[3].rrr", // K3_R = 0x13
I_KCOLORS"[0].ggg", // K0_G = 0x14
I_KCOLORS"[1].ggg", // K1_G = 0x15
I_KCOLORS"[2].ggg", // K2_G = 0x16
I_KCOLORS"[3].ggg", // K3_G = 0x17
I_KCOLORS"[0].bbb", // K0_B = 0x18
I_KCOLORS"[1].bbb", // K1_B = 0x19
I_KCOLORS"[2].bbb", // K2_B = 0x1A
I_KCOLORS"[3].bbb", // K3_B = 0x1B
I_KCOLORS"[0].aaa", // K0_A = 0x1C
I_KCOLORS"[1].aaa", // K1_A = 0x1D
I_KCOLORS"[2].aaa", // K2_A = 0x1E
I_KCOLORS"[3].aaa", // K3_A = 0x1F
};
static const char *tevKSelTableA[] = // KASEL
{
"1.0f", // 1 = 0x00
"0.875f",// 7_8 = 0x01
"0.75f", // 3_4 = 0x02
"0.625f",// 5_8 = 0x03
"0.5f", // 1_2 = 0x04
"0.375f",// 3_8 = 0x05
"0.25f", // 1_4 = 0x06
"0.125f",// 1_8 = 0x07
"ERROR5", // 0x08
"ERROR6", // 0x09
"ERROR7", // 0x0a
"ERROR8", // 0x0b
"ERROR9", // 0x0c
"ERROR10", // 0x0d
"ERROR11", // 0x0e
"ERROR12", // 0x0f
I_KCOLORS"[0].r", // K0_R = 0x10
I_KCOLORS"[1].r", // K1_R = 0x11
I_KCOLORS"[2].r", // K2_R = 0x12
I_KCOLORS"[3].r", // K3_R = 0x13
I_KCOLORS"[0].g", // K0_G = 0x14
I_KCOLORS"[1].g", // K1_G = 0x15
I_KCOLORS"[2].g", // K2_G = 0x16
I_KCOLORS"[3].g", // K3_G = 0x17
I_KCOLORS"[0].b", // K0_B = 0x18
I_KCOLORS"[1].b", // K1_B = 0x19
I_KCOLORS"[2].b", // K2_B = 0x1A
I_KCOLORS"[3].b", // K3_B = 0x1B
I_KCOLORS"[0].a", // K0_A = 0x1C
I_KCOLORS"[1].a", // K1_A = 0x1D
I_KCOLORS"[2].a", // K2_A = 0x1E
I_KCOLORS"[3].a", // K3_A = 0x1F
};
static const char *tevScaleTable[] = // CS
{
"1.0f", // SCALE_1
"2.0f", // SCALE_2
"4.0f", // SCALE_4
"0.5f", // DIVIDE_2
};
static const char *tevBiasTable[] = // TB
{
"", // ZERO,
"+0.5f", // ADDHALF,
"-0.5f", // SUBHALF,
"",
};
static const char *tevOpTable[] = { // TEV
"+", // TEVOP_ADD = 0,
"-", // TEVOP_SUB = 1,
};
static const char *tevCInputTable[] = // CC
{
"(prev.rgb)", // CPREV,
"(prev.aaa)", // APREV,
"(c0.rgb)", // C0,
"(c0.aaa)", // A0,
"(c1.rgb)", // C1,
"(c1.aaa)", // A1,
"(c2.rgb)", // C2,
"(c2.aaa)", // A2,
"(textemp.rgb)", // TEXC,
"(textemp.aaa)", // TEXA,
"(rastemp.rgb)", // RASC,
"(rastemp.aaa)", // RASA,
"float3(1.0f, 1.0f, 1.0f)", // ONE
"float3(0.5f, 0.5f, 0.5f)", // HALF
"(konsttemp.rgb)", //"konsttemp.rgb", // KONST
"float3(0.0f, 0.0f, 0.0f)", // ZERO
///aded extra values to map clamped values
"(cprev.rgb)", // CPREV,
"(cprev.aaa)", // APREV,
"(cc0.rgb)", // C0,
"(cc0.aaa)", // A0,
"(cc1.rgb)", // C1,
"(cc1.aaa)", // A1,
"(cc2.rgb)", // C2,
"(cc2.aaa)", // A2,
"(textemp.rgb)", // TEXC,
"(textemp.aaa)", // TEXA,
"(crastemp.rgb)", // RASC,
"(crastemp.aaa)", // RASA,
"float3(1.0f, 1.0f, 1.0f)", // ONE
"float3(0.5f, 0.5f, 0.5f)", // HALF
"(ckonsttemp.rgb)", //"konsttemp.rgb", // KONST
"float3(0.0f, 0.0f, 0.0f)", // ZERO
"PADERROR1", "PADERROR2", "PADERROR3", "PADERROR4"
};
static const char *tevAInputTable[] = // CA
{
"prev", // APREV,
"c0", // A0,
"c1", // A1,
"c2", // A2,
"textemp", // TEXA,
"rastemp", // RASA,
"konsttemp", // KONST, (hw1 had quarter)
"float4(0.0f, 0.0f, 0.0f, 0.0f)", // ZERO
///aded extra values to map clamped values
"cprev", // APREV,
"cc0", // A0,
"cc1", // A1,
"cc2", // A2,
"textemp", // TEXA,
"crastemp", // RASA,
"ckonsttemp", // KONST, (hw1 had quarter)
"float4(0.0f, 0.0f, 0.0f, 0.0f)", // ZERO
"PADERROR5", "PADERROR6", "PADERROR7", "PADERROR8",
"PADERROR9", "PADERROR10", "PADERROR11", "PADERROR12",
};
static const char *tevRasTable[] =
{
"colors_0",
"colors_1",
"ERROR13", //2
"ERROR14", //3
"ERROR15", //4
"float4(alphabump,alphabump,alphabump,alphabump)", // use bump alpha
"(float4(alphabump,alphabump,alphabump,alphabump)*(255.0f/248.0f))", //normalized
"float4(0.0f, 0.0f, 0.0f, 0.0f)", // zero
};
//static const char *tevTexFunc[] = { "tex2D", "texRECT" };
static const char *tevCOutputTable[] = { "prev.rgb", "c0.rgb", "c1.rgb", "c2.rgb" };
static const char *tevAOutputTable[] = { "prev.a", "c0.a", "c1.a", "c2.a" };
static const char *tevIndAlphaSel[] = {"", "x", "y", "z"};
//static const char *tevIndAlphaScale[] = {"", "*32", "*16", "*8"};
static const char *tevIndAlphaScale[] = {"*(248.0f/255.0f)", "*(224.0f/255.0f)", "*(240.0f/255.0f)", "*(248.0f/255.0f)"};
static const char *tevIndBiasField[] = {"", "x", "y", "xy", "z", "xz", "yz", "xyz"}; // indexed by bias
static const char *tevIndBiasAdd[] = {"-128.0f", "1.0f", "1.0f", "1.0f" }; // indexed by fmt
static const char *tevIndWrapStart[] = {"0.0f", "256.0f", "128.0f", "64.0f", "32.0f", "16.0f", "0.001f" };
static const char *tevIndFmtScale[] = {"255.0f", "31.0f", "15.0f", "7.0f" };
#define WRITE p+=sprintf
static char swapModeTable[4][5];
static char text[16384];
struct RegisterState
{
bool ColorNeedOverflowControl;
bool AlphaNeedOverflowControl;
bool AuxStored;
};
static RegisterState RegisterStates[4];
static void BuildSwapModeTable()
{
static const char *swapColors = "rgba";
for (int i = 0; i < 4; i++)
{
swapModeTable[i][0] = swapColors[bpmem.tevksel[i*2].swap1];
swapModeTable[i][1] = swapColors[bpmem.tevksel[i*2].swap2];
swapModeTable[i][2] = swapColors[bpmem.tevksel[i*2+1].swap1];
swapModeTable[i][3] = swapColors[bpmem.tevksel[i*2+1].swap2];
swapModeTable[i][4] = 0;
}
}
const char* WriteRegister(API_TYPE ApiType, const char *prefix, const u32 num)
{
if (ApiType == API_OPENGL)
return ""; // Nothing to do here
static char result[64];
sprintf(result, " : register(%s%d)", prefix, num);
return result;
}
const char *WriteLocation(API_TYPE ApiType)
{
if (g_ActiveConfig.backend_info.bSupportsGLSLUBO)
return "";
static char result[64];
sprintf(result, "uniform ");
return result;
}
const char *GeneratePixelShaderCode(DSTALPHA_MODE dstAlphaMode, API_TYPE ApiType, u32 components)
{
setlocale(LC_NUMERIC, "C"); // Reset locale for compilation
text[sizeof(text) - 1] = 0x7C; // canary
BuildSwapModeTable(); // Needed for WriteStage
int numStages = bpmem.genMode.numtevstages + 1;
int numTexgen = bpmem.genMode.numtexgens;
bool per_pixel_depth = bpmem.ztex2.op != ZTEXTURE_DISABLE && !bpmem.zcontrol.early_ztest && bpmem.zmode.testenable;
char *p = text;
WRITE(p, "//Pixel Shader for TEV stages\n");
WRITE(p, "//%i TEV stages, %i texgens, XXX IND stages\n",
numStages, numTexgen/*, bpmem.genMode.numindstages*/);
int nIndirectStagesUsed = 0;
if (bpmem.genMode.numindstages > 0)
{
for (int i = 0; i < numStages; ++i)
{
if (bpmem.tevind[i].IsActive() && bpmem.tevind[i].bt < bpmem.genMode.numindstages)
nIndirectStagesUsed |= 1 << bpmem.tevind[i].bt;
}
}
if (ApiType == API_OPENGL)
{
// A function here
// Fmod implementation gleaned from Nvidia
// At http://http.developer.nvidia.com/Cg/fmod.html
WRITE(p, "float fmod( float x, float y )\n");
WRITE(p, "{\n");
WRITE(p, "\tfloat z = fract( abs( x / y) ) * abs( y );\n");
WRITE(p, "\treturn (x < 0) ? -z : z;\n");
WRITE(p, "}\n");
for (int i = 0; i < 8; ++i)
WRITE(p, "uniform sampler2D samp%d;\n", i);
}
else
{
// Declare samplers
if (ApiType != API_D3D11)
{
WRITE(p, "uniform sampler2D ");
}
else
{
WRITE(p, "sampler ");
}
bool bfirst = true;
for (int i = 0; i < 8; ++i)
{
WRITE(p, "%s samp%d %s", bfirst?"":",", i, WriteRegister(ApiType, "s", i));
bfirst = false;
}
WRITE(p, ";\n");
if (ApiType == API_D3D11)
{
WRITE(p, "Texture2D ");
bfirst = true;
for (int i = 0; i < 8; ++i)
{
WRITE(p, "%s Tex%d : register(t%d)", bfirst?"":",", i, i);
bfirst = false;
}
WRITE(p, ";\n");
}
}
WRITE(p, "\n");
if (g_ActiveConfig.backend_info.bSupportsGLSLUBO)
WRITE(p, "layout(std140) uniform PSBlock {\n");
WRITE(p, "\t%sfloat4 " I_COLORS"[4] %s;\n", WriteLocation(ApiType), WriteRegister(ApiType, "c", C_COLORS));
WRITE(p, "\t%sfloat4 " I_KCOLORS"[4] %s;\n", WriteLocation(ApiType), WriteRegister(ApiType, "c", C_KCOLORS));
WRITE(p, "\t%sfloat4 " I_ALPHA"[1] %s;\n", WriteLocation(ApiType), WriteRegister(ApiType, "c", C_ALPHA));
WRITE(p, "\t%sfloat4 " I_TEXDIMS"[8] %s;\n", WriteLocation(ApiType), WriteRegister(ApiType, "c", C_TEXDIMS));
WRITE(p, "\t%sfloat4 " I_ZBIAS"[2] %s;\n", WriteLocation(ApiType), WriteRegister(ApiType, "c", C_ZBIAS));
WRITE(p, "\t%sfloat4 " I_INDTEXSCALE"[2] %s;\n", WriteLocation(ApiType), WriteRegister(ApiType, "c", C_INDTEXSCALE));
WRITE(p, "\t%sfloat4 " I_INDTEXMTX"[6] %s;\n", WriteLocation(ApiType), WriteRegister(ApiType, "c", C_INDTEXMTX));
WRITE(p, "\t%sfloat4 " I_FOG"[3] %s;\n", WriteLocation(ApiType), WriteRegister(ApiType, "c", C_FOG));
// For pixel lighting
WRITE(p, "\t%sfloat4 " I_PLIGHTS"[40] %s;\n", WriteLocation(ApiType), WriteRegister(ApiType, "c", C_PLIGHTS));
WRITE(p, "\t%sfloat4 " I_PMATERIALS"[4] %s;\n", WriteLocation(ApiType), WriteRegister(ApiType, "c", C_PMATERIALS));
if (g_ActiveConfig.backend_info.bSupportsGLSLUBO)
WRITE(p, "};\n");
if (ApiType == API_OPENGL)
{
WRITE(p, "out float4 ocol0;\n");
if (dstAlphaMode == DSTALPHA_DUAL_SOURCE_BLEND)
WRITE(p, "out float4 ocol1;\n");
if (per_pixel_depth)
WRITE(p, "#define depth gl_FragDepth\n");
WRITE(p, "float4 rawpos = gl_FragCoord;\n");
WRITE(p, "VARYIN float4 colors_02;\n");
WRITE(p, "VARYIN float4 colors_12;\n");
WRITE(p, "float4 colors_0 = colors_02;\n");
WRITE(p, "float4 colors_1 = colors_12;\n");
// compute window position if needed because binding semantic WPOS is not widely supported
// Let's set up attributes
if (xfregs.numTexGen.numTexGens < 7)
{
for (int i = 0; i < 8; ++i)
{
WRITE(p, "VARYIN float3 uv%d_2;\n", i);
WRITE(p, "float3 uv%d = uv%d_2;\n", i, i);
}
WRITE(p, "VARYIN float4 clipPos_2;\n");
WRITE(p, "float4 clipPos = clipPos_2;\n");
if (g_ActiveConfig.bEnablePixelLighting && g_ActiveConfig.backend_info.bSupportsPixelLighting)
{
WRITE(p, "VARYIN float4 Normal_2;\n");
WRITE(p, "float4 Normal = Normal_2;\n");
}
}
else
{
// wpos is in w of first 4 texcoords
if (g_ActiveConfig.bEnablePixelLighting && g_ActiveConfig.backend_info.bSupportsPixelLighting)
{
for (int i = 0; i < 8; ++i)
{
WRITE(p, "VARYIN float4 uv%d_2;\n", i);
WRITE(p, "float4 uv%d = uv%d_2;\n", i, i);
}
}
else
{
for (unsigned int i = 0; i < xfregs.numTexGen.numTexGens; ++i)
{
WRITE(p, "VARYIN float%d uv%d_2;\n", i < 4 ? 4 : 3 , i);
WRITE(p, "float%d uv%d = uv%d_2;\n", i < 4 ? 4 : 3 , i, i);
}
}
WRITE(p, "float4 clipPos;\n");
}
WRITE(p, "void main()\n{\n");
}
else
{
WRITE(p, "void main(\n");
if (ApiType != API_D3D11)
{
WRITE(p, " out float4 ocol0 : COLOR0,%s%s\n in float4 rawpos : %s,\n",
dstAlphaMode == DSTALPHA_DUAL_SOURCE_BLEND ? "\n out float4 ocol1 : COLOR1," : "",
per_pixel_depth ? "\n out float depth : DEPTH," : "",
ApiType & API_D3D9_SM20 ? "POSITION" : "VPOS");
}
else
{
WRITE(p, " out float4 ocol0 : SV_Target0,%s%s\n in float4 rawpos : SV_Position,\n",
dstAlphaMode == DSTALPHA_DUAL_SOURCE_BLEND ? "\n out float4 ocol1 : SV_Target1," : "",
per_pixel_depth ? "\n out float depth : SV_Depth," : "");
}
WRITE(p, " in float4 colors_0 : COLOR0,\n");
WRITE(p, " in float4 colors_1 : COLOR1");
// compute window position if needed because binding semantic WPOS is not widely supported
if (numTexgen < 7)
{
for (int i = 0; i < numTexgen; ++i)
WRITE(p, ",\n in float3 uv%d : TEXCOORD%d", i, i);
WRITE(p, ",\n in float4 clipPos : TEXCOORD%d", numTexgen);
if(g_ActiveConfig.bEnablePixelLighting && g_ActiveConfig.backend_info.bSupportsPixelLighting)
WRITE(p, ",\n in float4 Normal : TEXCOORD%d", numTexgen + 1);
WRITE(p, " ) {\n");
}
else
{
// wpos is in w of first 4 texcoords
if(g_ActiveConfig.bEnablePixelLighting && g_ActiveConfig.backend_info.bSupportsPixelLighting)
{
for (int i = 0; i < 8; ++i)
WRITE(p, ",\n in float4 uv%d : TEXCOORD%d", i, i);
}
else
{
for (unsigned int i = 0; i < xfregs.numTexGen.numTexGens; ++i)
WRITE(p, ",\n in float%d uv%d : TEXCOORD%d", i < 4 ? 4 : 3 , i, i);
}
WRITE(p, " ) {\n");
WRITE(p, "\tfloat4 clipPos = float4(0.0f, 0.0f, 0.0f, 0.0f);");
}
}
WRITE(p, " float4 c0 = " I_COLORS"[1], c1 = " I_COLORS"[2], c2 = " I_COLORS"[3], prev = float4(0.0f, 0.0f, 0.0f, 0.0f), textemp = float4(0.0f, 0.0f, 0.0f, 0.0f), rastemp = float4(0.0f, 0.0f, 0.0f, 0.0f), konsttemp = float4(0.0f, 0.0f, 0.0f, 0.0f);\n"
" float3 comp16 = float3(1.0f, 255.0f, 0.0f), comp24 = float3(1.0f, 255.0f, 255.0f*255.0f);\n"
" float alphabump=0.0f;\n"
" float3 tevcoord=float3(0.0f, 0.0f, 0.0f);\n"
" float2 wrappedcoord=float2(0.0f,0.0f), tempcoord=float2(0.0f,0.0f);\n"
" float4 cc0=float4(0.0f,0.0f,0.0f,0.0f), cc1=float4(0.0f,0.0f,0.0f,0.0f);\n"
" float4 cc2=float4(0.0f,0.0f,0.0f,0.0f), cprev=float4(0.0f,0.0f,0.0f,0.0f);\n"
" float4 crastemp=float4(0.0f,0.0f,0.0f,0.0f),ckonsttemp=float4(0.0f,0.0f,0.0f,0.0f);\n\n");
if (g_ActiveConfig.bEnablePixelLighting && g_ActiveConfig.backend_info.bSupportsPixelLighting)
{
if (xfregs.numTexGen.numTexGens < 7)
{
WRITE(p,"\tfloat3 _norm0 = normalize(Normal.xyz);\n\n");
WRITE(p,"\tfloat3 pos = float3(clipPos.x,clipPos.y,Normal.w);\n");
}
else
{
WRITE(p,"\tfloat3 _norm0 = normalize(float3(uv4.w,uv5.w,uv6.w));\n\n");
WRITE(p,"\tfloat3 pos = float3(uv0.w,uv1.w,uv7.w);\n");
}
WRITE(p, "\tfloat4 mat, lacc;\n"
"\tfloat3 ldir, h;\n"
"\tfloat dist, dist2, attn;\n");
p = GenerateLightingShader(p, components, I_PMATERIALS, I_PLIGHTS, "colors_", "colors_");
}
if (numTexgen < 7)
WRITE(p, "\tclipPos = float4(rawpos.x, rawpos.y, clipPos.z, clipPos.w);\n");
else
WRITE(p, "\tclipPos = float4(rawpos.x, rawpos.y, uv2.w, uv3.w);\n");
// HACK to handle cases where the tex gen is not enabled
if (numTexgen == 0)
{
WRITE(p, "\tfloat3 uv0 = float3(0.0f, 0.0f, 0.0f);\n");
}
else
{
for (int i = 0; i < numTexgen; ++i)
{
// optional perspective divides
if (xfregs.texMtxInfo[i].projection == XF_TEXPROJ_STQ)
{
WRITE(p, "\tif (uv%d.z != 0.0f)", i);
WRITE(p, "\t\tuv%d.xy = uv%d.xy / uv%d.z;\n", i, i, i);
}
WRITE(p, "uv%d.xy = uv%d.xy * " I_TEXDIMS"[%d].zw;\n", i, i, i);
}
}
// indirect texture map lookup
for (u32 i = 0; i < bpmem.genMode.numindstages; ++i)
{
if (nIndirectStagesUsed & (1<<i))
{
int texcoord = bpmem.tevindref.getTexCoord(i);
if (texcoord < numTexgen)
WRITE(p, "\ttempcoord = uv%d.xy * " I_INDTEXSCALE"[%d].%s;\n", texcoord, i/2, (i&1)?"zw":"xy");
else
WRITE(p, "\ttempcoord = float2(0.0f, 0.0f);\n");
char buffer[32];
sprintf(buffer, "float3 indtex%d", i);
SampleTexture(p, buffer, "tempcoord", "abg", bpmem.tevindref.getTexMap(i), ApiType);
}
}
RegisterStates[0].AlphaNeedOverflowControl = false;
RegisterStates[0].ColorNeedOverflowControl = false;
RegisterStates[0].AuxStored = false;
for(int i = 1; i < 4; i++)
{
RegisterStates[i].AlphaNeedOverflowControl = true;
RegisterStates[i].ColorNeedOverflowControl = true;
RegisterStates[i].AuxStored = false;
}
for (int i = 0; i < numStages; i++)
WriteStage(p, i, ApiType); //build the equation for this stage
if (numStages)
{
// The results of the last texenv stage are put onto the screen,
// regardless of the used destination register
if(bpmem.combiners[numStages - 1].colorC.dest != 0)
{
bool retrieveFromAuxRegister = !RegisterStates[bpmem.combiners[numStages - 1].colorC.dest].ColorNeedOverflowControl && RegisterStates[bpmem.combiners[numStages - 1].colorC.dest].AuxStored;
WRITE(p, "\tprev.rgb = %s%s;\n", retrieveFromAuxRegister ? "c" : "" , tevCOutputTable[bpmem.combiners[numStages - 1].colorC.dest]);
RegisterStates[0].ColorNeedOverflowControl = RegisterStates[bpmem.combiners[numStages - 1].colorC.dest].ColorNeedOverflowControl;
}
if(bpmem.combiners[numStages - 1].alphaC.dest != 0)
{
bool retrieveFromAuxRegister = !RegisterStates[bpmem.combiners[numStages - 1].alphaC.dest].AlphaNeedOverflowControl && RegisterStates[bpmem.combiners[numStages - 1].alphaC.dest].AuxStored;
WRITE(p, "\tprev.a = %s%s;\n", retrieveFromAuxRegister ? "c" : "" , tevAOutputTable[bpmem.combiners[numStages - 1].alphaC.dest]);
RegisterStates[0].AlphaNeedOverflowControl = RegisterStates[bpmem.combiners[numStages - 1].alphaC.dest].AlphaNeedOverflowControl;
}
}
// emulation of unsigned 8 overflow when casting if needed
if(RegisterStates[0].AlphaNeedOverflowControl || RegisterStates[0].ColorNeedOverflowControl)
WRITE(p, "\tprev = frac(prev * (255.0f/256.0f)) * (256.0f/255.0f);\n");
AlphaTest::TEST_RESULT Pretest = bpmem.alpha_test.TestResult();
if (Pretest == AlphaTest::UNDETERMINED)
WriteAlphaTest(p, ApiType, dstAlphaMode, per_pixel_depth);
// the screen space depth value = far z + (clip z / clip w) * z range
if(ApiType == API_OPENGL || ApiType == API_D3D11)
WRITE(p, "float zCoord = rawpos.z;\n");
else
// dx9 doesn't support 4 component position, so we have to calculate it again
WRITE(p, "float zCoord = " I_ZBIAS"[1].x + (clipPos.z / clipPos.w) * " I_ZBIAS"[1].y;\n");
// depth texture can safely be ignored if the result won't be written to the depth buffer (early_ztest) and isn't used for fog either
bool skip_ztexture = !per_pixel_depth && !bpmem.fog.c_proj_fsel.fsel;
if (bpmem.ztex2.op != ZTEXTURE_DISABLE && !skip_ztexture)
{
// use the texture input of the last texture stage (textemp), hopefully this has been read and is in correct format...
WRITE(p, "zCoord = dot(" I_ZBIAS"[0].xyzw, textemp.xyzw) + " I_ZBIAS"[1].w %s;\n",
(bpmem.ztex2.op == ZTEXTURE_ADD) ? "+ zCoord" : "");
// scale to make result from frac correct
WRITE(p, "zCoord = zCoord * (16777215.0f/16777216.0f);\n");
WRITE(p, "zCoord = frac(zCoord);\n");
WRITE(p, "zCoord = zCoord * (16777216.0f/16777215.0f);\n");
// Note: depth texture out put is only written to depth buffer if late depth test is used
if (per_pixel_depth)
WRITE(p, "depth = zCoord;\n");
}
if (dstAlphaMode == DSTALPHA_ALPHA_PASS)
WRITE(p, "\tocol0 = float4(prev.rgb, " I_ALPHA"[0].a);\n");
else
{
WriteFog(p);
WRITE(p, "\tocol0 = prev;\n");
}
// On D3D11, use dual-source color blending to perform dst alpha in a
// single pass
if (dstAlphaMode == DSTALPHA_DUAL_SOURCE_BLEND)
{
if(ApiType & API_D3D9)
{
//Colors will be blended against the color from ocol1 in D3D 9...
//ALPHA must be 0 or the shader will not compile( direct3d9 ex resriction)
WRITE(p, "\tocol1 = float4(prev.a, prev.a, prev.a, 0.0f);\n");
}
else
{
// Colors will be blended against the alpha from ocol1...
WRITE(p, "\tocol1 = prev;\n");
}
// ...and the alpha from ocol0 will be written to the framebuffer.
WRITE(p, "\tocol0.a = " I_ALPHA"[0].a;\n");
}
WRITE(p, "}\n");
if (text[sizeof(text) - 1] != 0x7C)
PanicAlert("PixelShader generator - buffer too small, canary has been eaten!");
setlocale(LC_NUMERIC, ""); // restore locale
return text;
}
//table with the color compare operations
static const char *TEVCMPColorOPTable[16] =
{
"float3(0.0f, 0.0f, 0.0f)",//0
"float3(0.0f, 0.0f, 0.0f)",//1
"float3(0.0f, 0.0f, 0.0f)",//2
"float3(0.0f, 0.0f, 0.0f)",//3
"float3(0.0f, 0.0f, 0.0f)",//4
"float3(0.0f, 0.0f, 0.0f)",//5
"float3(0.0f, 0.0f, 0.0f)",//6
"float3(0.0f, 0.0f, 0.0f)",//7
" %s + ((%s.r >= %s.r + (0.25f/255.0f)) ? %s : float3(0.0f, 0.0f, 0.0f))",//#define TEVCMP_R8_GT 8
" %s + ((abs(%s.r - %s.r) < (0.5f/255.0f)) ? %s : float3(0.0f, 0.0f, 0.0f))",//#define TEVCMP_R8_EQ 9
" %s + (( dot(%s.rgb, comp16) >= (dot(%s.rgb, comp16) + (0.25f/255.0f))) ? %s : float3(0.0f, 0.0f, 0.0f))",//#define TEVCMP_GR16_GT 10
" %s + (abs(dot(%s.rgb, comp16) - dot(%s.rgb, comp16)) < (0.5f/255.0f) ? %s : float3(0.0f, 0.0f, 0.0f))",//#define TEVCMP_GR16_EQ 11
" %s + (( dot(%s.rgb, comp24) >= (dot(%s.rgb, comp24) + (0.25f/255.0f))) ? %s : float3(0.0f, 0.0f, 0.0f))",//#define TEVCMP_BGR24_GT 12
" %s + (abs(dot(%s.rgb, comp24) - dot(%s.rgb, comp24)) < (0.5f/255.0f) ? %s : float3(0.0f, 0.0f, 0.0f))",//#define TEVCMP_BGR24_EQ 13
" %s + (max(sign(%s.rgb - %s.rgb - (0.25f/255.0f)), float3(0.0f, 0.0f, 0.0f)) * %s)",//#define TEVCMP_RGB8_GT 14
" %s + ((float3(1.0f, 1.0f, 1.0f) - max(sign(abs(%s.rgb - %s.rgb) - (0.5f/255.0f)), float3(0.0f, 0.0f, 0.0f))) * %s)"//#define TEVCMP_RGB8_EQ 15
};
//table with the alpha compare operations
static const char *TEVCMPAlphaOPTable[16] =
{
"0.0f",//0
"0.0f",//1
"0.0f",//2
"0.0f",//3
"0.0f",//4
"0.0f",//5
"0.0f",//6
"0.0f",//7
" %s.a + ((%s.r >= (%s.r + (0.25f/255.0f))) ? %s.a : 0.0f)",//#define TEVCMP_R8_GT 8
" %s.a + (abs(%s.r - %s.r) < (0.5f/255.0f) ? %s.a : 0.0f)",//#define TEVCMP_R8_EQ 9
" %s.a + ((dot(%s.rgb, comp16) >= (dot(%s.rgb, comp16) + (0.25f/255.0f))) ? %s.a : 0.0f)",//#define TEVCMP_GR16_GT 10
" %s.a + (abs(dot(%s.rgb, comp16) - dot(%s.rgb, comp16)) < (0.5f/255.0f) ? %s.a : 0.0f)",//#define TEVCMP_GR16_EQ 11
" %s.a + ((dot(%s.rgb, comp24) >= (dot(%s.rgb, comp24) + (0.25f/255.0f))) ? %s.a : 0.0f)",//#define TEVCMP_BGR24_GT 12
" %s.a + (abs(dot(%s.rgb, comp24) - dot(%s.rgb, comp24)) < (0.5f/255.0f) ? %s.a : 0.0f)",//#define TEVCMP_BGR24_EQ 13
" %s.a + ((%s.a >= (%s.a + (0.25f/255.0f))) ? %s.a : 0.0f)",//#define TEVCMP_A8_GT 14
" %s.a + (abs(%s.a - %s.a) < (0.5f/255.0f) ? %s.a : 0.0f)"//#define TEVCMP_A8_EQ 15
};
static void WriteStage(char *&p, int n, API_TYPE ApiType)
{
int texcoord = bpmem.tevorders[n/2].getTexCoord(n&1);
bool bHasTexCoord = (u32)texcoord < bpmem.genMode.numtexgens;
bool bHasIndStage = bpmem.tevind[n].IsActive() && bpmem.tevind[n].bt < bpmem.genMode.numindstages;
// HACK to handle cases where the tex gen is not enabled
if (!bHasTexCoord)
texcoord = 0;
WRITE(p, "// TEV stage %d\n", n);
if (bHasIndStage)
{
WRITE(p, "// indirect op\n");
// perform the indirect op on the incoming regular coordinates using indtex%d as the offset coords
if (bpmem.tevind[n].bs != ITBA_OFF)
{
WRITE(p, "alphabump = indtex%d.%s %s;\n",
bpmem.tevind[n].bt,
tevIndAlphaSel[bpmem.tevind[n].bs],
tevIndAlphaScale[bpmem.tevind[n].fmt]);
}
// format
WRITE(p, "float3 indtevcrd%d = indtex%d * %s;\n", n, bpmem.tevind[n].bt, tevIndFmtScale[bpmem.tevind[n].fmt]);
// bias
if (bpmem.tevind[n].bias != ITB_NONE )
WRITE(p, "indtevcrd%d.%s += %s;\n", n, tevIndBiasField[bpmem.tevind[n].bias], tevIndBiasAdd[bpmem.tevind[n].fmt]);
// multiply by offset matrix and scale
if (bpmem.tevind[n].mid != 0)
{
if (bpmem.tevind[n].mid <= 3)
{
int mtxidx = 2*(bpmem.tevind[n].mid-1);
WRITE(p, "float2 indtevtrans%d = float2(dot(" I_INDTEXMTX"[%d].xyz, indtevcrd%d), dot(" I_INDTEXMTX"[%d].xyz, indtevcrd%d));\n",
n, mtxidx, n, mtxidx+1, n);
}
else if (bpmem.tevind[n].mid <= 7 && bHasTexCoord)
{ // s matrix
_assert_(bpmem.tevind[n].mid >= 5);
int mtxidx = 2*(bpmem.tevind[n].mid-5);
WRITE(p, "float2 indtevtrans%d = " I_INDTEXMTX"[%d].ww * uv%d.xy * indtevcrd%d.xx;\n", n, mtxidx, texcoord, n);
}
else if (bpmem.tevind[n].mid <= 11 && bHasTexCoord)
{ // t matrix
_assert_(bpmem.tevind[n].mid >= 9);
int mtxidx = 2*(bpmem.tevind[n].mid-9);
WRITE(p, "float2 indtevtrans%d = " I_INDTEXMTX"[%d].ww * uv%d.xy * indtevcrd%d.yy;\n", n, mtxidx, texcoord, n);
}
else
WRITE(p, "float2 indtevtrans%d = float2(0.0f, 0.0f);\n", n);
}
else
WRITE(p, "float2 indtevtrans%d = float2(0.0f, 0.0f);\n", n);
// ---------
// Wrapping
// ---------
// wrap S
if (bpmem.tevind[n].sw == ITW_OFF)
WRITE(p, "wrappedcoord.x = uv%d.x;\n", texcoord);
else if (bpmem.tevind[n].sw == ITW_0)
WRITE(p, "wrappedcoord.x = 0.0f;\n");
else
WRITE(p, "wrappedcoord.x = fmod( uv%d.x, %s );\n", texcoord, tevIndWrapStart[bpmem.tevind[n].sw]);
// wrap T
if (bpmem.tevind[n].tw == ITW_OFF)
WRITE(p, "wrappedcoord.y = uv%d.y;\n", texcoord);
else if (bpmem.tevind[n].tw == ITW_0)
WRITE(p, "wrappedcoord.y = 0.0f;\n");
else
WRITE(p, "wrappedcoord.y = fmod( uv%d.y, %s );\n", texcoord, tevIndWrapStart[bpmem.tevind[n].tw]);
if (bpmem.tevind[n].fb_addprev) // add previous tevcoord
WRITE(p, "tevcoord.xy += wrappedcoord + indtevtrans%d;\n", n);
else
WRITE(p, "tevcoord.xy = wrappedcoord + indtevtrans%d;\n", n);