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Merge pull request #193 from neobrain/tev_combiner_fixes
PixelShaderGen: Cleanups and fixes for tev combiners.
This commit is contained in:
Pierre Bourdon
@ -90,27 +90,6 @@ static const char *tevKSelTableA[] =
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I_KCOLORS"[3].a", // K3_A = 0x1F
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};
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static const char *tevScaleTable[] =
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{
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"", // SCALE_1
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" << 1", // SCALE_2
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" << 2", // SCALE_4
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" >> 1", // DIVIDE_2
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};
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static const char *tevBiasTable[] =
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{
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"", // ZERO,
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"+ 128", // ADDHALF,
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"- 128", // SUBHALF,
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"",
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};
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static const char *tevOpTable[] = {
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"+", // TEVOP_ADD = 0,
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"-", // TEVOP_SUB = 1,
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};
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static const char *tevCInputTable[] =
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{
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"prev.rgb", // CPREV,
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@ -133,14 +112,14 @@ static const char *tevCInputTable[] =
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static const char *tevAInputTable[] =
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{
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"prev", // APREV,
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"c0", // A0,
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"c1", // A1,
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"c2", // A2,
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"textemp", // TEXA,
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"rastemp", // RASA,
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"konsttemp", // KONST, (hw1 had quarter)
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"int4(0,0,0,0)", // ZERO
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"prev.a", // APREV,
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"c0.a", // A0,
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"c1.a", // A1,
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"c2.a", // A2,
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"textemp.a", // TEXA,
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"rastemp.a", // RASA,
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"konsttemp.a", // KONST, (hw1 had quarter)
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"0", // ZERO
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};
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static const char *tevRasTable[] =
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@ -161,6 +140,7 @@ static const char *tevAOutputTable[] = { "prev.a", "c0.a", "c1.a", "c2.a" };
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static char text[16384];
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template<class T> static inline void WriteStage(T& out, pixel_shader_uid_data& uid_data, int n, API_TYPE ApiType, const char swapModeTable[4][5]);
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template<class T> static inline void WriteTevRegular(T& out, const char* components, int bias, int op, int clamp, int shift);
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template<class T> static inline void SampleTexture(T& out, const char *texcoords, const char *texswap, int texmap, API_TYPE ApiType);
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template<class T> static inline void WriteAlphaTest(T& out, pixel_shader_uid_data& uid_data, API_TYPE ApiType,DSTALPHA_MODE dstAlphaMode, bool per_pixel_depth);
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template<class T> static inline void WriteFog(T& out, pixel_shader_uid_data& uid_data);
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@ -343,7 +323,8 @@ static inline void GeneratePixelShader(T& out, DSTALPHA_MODE dstAlphaMode, API_T
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"\tint3 comp16 = int3(1, 256, 0), comp24 = int3(1, 256, 256*256);\n"
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"\tint alphabump=0;\n"
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"\tint3 tevcoord=int3(0, 0, 0);\n"
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"\tint2 wrappedcoord=int2(0,0), tempcoord=int2(0,0);\n\n");
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"\tint2 wrappedcoord=int2(0,0), tempcoord=int2(0,0);\n"
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"\tint4 tevin_a=int4(0,0,0,0),tevin_b=int4(0,0,0,0),tevin_c=int4(0,0,0,0),tevin_d=int4(0,0,0,0);\n\n"); // tev combiner inputs
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if (ApiType == API_OPENGL)
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{
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@ -778,44 +759,35 @@ static inline void WriteStage(T& out, pixel_shader_uid_data& uid_data, int n, AP
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if (ac.dest >= GX_TEVREG0 && ac.dest <= GX_TEVREG2)
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out.SetConstantsUsed(C_COLORS+ac.dest, C_COLORS+ac.dest);
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out.Write("tevin_a = int4(%s, %s)&255;\n", tevCInputTable[cc.a], tevAInputTable[ac.a]);
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out.Write("tevin_b = int4(%s, %s)&255;\n", tevCInputTable[cc.b], tevAInputTable[ac.b]);
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out.Write("tevin_c = int4(%s, %s)&255;\n", tevCInputTable[cc.c], tevAInputTable[ac.c]);
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out.Write("tevin_d = int4(%s, %s);\n", tevCInputTable[cc.d], tevAInputTable[ac.d]);
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out.Write("\t// color combine\n");
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out.Write("\t%s = clamp(", tevCOutputTable[cc.dest]);
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// combine the color channel
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if (cc.bias != TevBias_COMPARE) // if not compare
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if (cc.bias != TevBias_COMPARE)
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{
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//normal color combiner goes here
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if (cc.shift > TEVSCALE_1)
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out.Write("(");
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if (!(cc.d == TEVCOLORARG_ZERO && cc.op == TEVOP_ADD))
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out.Write("%s %s ", tevCInputTable[cc.d], tevOpTable[cc.op]);
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out.Write("((%s&255) * (int3(255,255,255) - (%s&255)) + (%s&255) * (%s&255)) / 255", tevCInputTable[cc.a], tevCInputTable[cc.c], tevCInputTable[cc.b], tevCInputTable[cc.c]);
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out.Write(" %s", tevBiasTable[cc.bias]);
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if (cc.shift > TEVSCALE_1)
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out.Write(")%s", tevScaleTable[cc.shift]);
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WriteTevRegular(out, "rgb", cc.bias, cc.op, cc.clamp, cc.shift);
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}
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else
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{
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const char *function_table[] =
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{
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"(((%s.r&255) > %s.r) ? (%s&255): int3(0,0,0))", // TEVCMP_R8_GT
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"(((%s.r&255) == %s.r) ? (%s&255): int3(0,0,0))", // TEVCMP_R8_EQ
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"((idot((%s.rgb&255), comp16) > idot((%s.rgb&255), comp16)) ? (%s&255): int3(0,0,0))", // TEVCMP_GR16_GT
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"((idot((%s.rgb&255), comp16) == idot((%s.rgb&255), comp16)) ? (%s&255): int3(0,0,0))", // TEVCMP_GR16_EQ
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"((idot((%s.rgb&255), comp24) > idot((%s.rgb&255), comp24)) ? (%s&255): int3(0,0,0))", // TEVCMP_BGR24_GT
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"((idot((%s.rgb&255), comp24) == idot((%s.rgb&255), comp24)) ? (%s&255): int3(0,0,0))", // TEVCMP_BGR24_EQ
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"int3(max(sign(int3((%s.rgb&255)) - int3((%s.rgb&255))), int3(0,0,0)) * (%s&255))", // TEVCMP_RGB8_GT
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"int3((int3(255,255,255) - max(sign(abs(int3((%s.rgb&255)) - int3((%s.rgb&255)))), int3(0,0,0))) * (%s&255))" // TEVCMP_RGB8_EQ
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"((tevin_a.r > tevin_b.r) ? tevin_c.rgb : int3(0,0,0))", // TEVCMP_R8_GT
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"((tevin_a.r == tevin_b.r) ? tevin_c.rgb : int3(0,0,0))", // TEVCMP_R8_EQ
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"((idot(tevin_a.rgb, comp16) > idot(tevin_b.rgb, comp16)) ? tevin_c.rgb : int3(0,0,0))", // TEVCMP_GR16_GT
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"((idot(tevin_a.rgb, comp16) == idot(tevin_b.rgb, comp16)) ? tevin_c.rgb : int3(0,0,0))", // TEVCMP_GR16_EQ
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"((idot(tevin_a.rgb, comp24) > idot(tevin_b.rgb, comp24)) ? tevin_c.rgb : int3(0,0,0))", // TEVCMP_BGR24_GT
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"((idot(tevin_a.rgb, comp24) == idot(tevin_b.rgb, comp24)) ? tevin_c.rgb : int3(0,0,0))", // TEVCMP_BGR24_EQ
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"(max(sign(tevin_a.rgb - tevin_b.rgb), int3(0,0,0)) * tevin_c.rgb)", // TEVCMP_RGB8_GT
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"((int3(255,255,255) - max(sign(abs(tevin_a.rgb - tevin_b.rgb))), int3(0,0,0))) * tevin_c.rgb)" // TEVCMP_RGB8_EQ
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};
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int mode = (cc.shift<<1)|cc.op;
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out.Write(" %s + ", tevCInputTable[cc.d]);
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out.Write(function_table[mode], tevCInputTable[cc.a],
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tevCInputTable[cc.b], tevCInputTable[cc.c]);
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out.Write(" tevin_d.rgb + ");
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out.Write(function_table[mode]);
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}
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if (cc.clamp)
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out.Write(", int3(0,0,0), int3(255,255,255))");
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@ -825,41 +797,27 @@ static inline void WriteStage(T& out, pixel_shader_uid_data& uid_data, int n, AP
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out.Write("\t// alpha combine\n");
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out.Write("\t%s = clamp(", tevAOutputTable[ac.dest]);
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if (ac.bias != TevBias_COMPARE) // if not compare
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if (ac.bias != TevBias_COMPARE)
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{
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//normal alpha combiner goes here
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if (ac.shift > 0)
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out.Write("(");
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if (!(ac.d == TEVALPHAARG_ZERO && ac.op == TEVOP_ADD))
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out.Write("%s.a %s ", tevAInputTable[ac.d], tevOpTable[ac.op]);
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out.Write("((%s.a&255) * (255 - (%s.a&255)) + (%s.a&255) * (%s.a&255)) / 255", tevAInputTable[ac.a], tevAInputTable[ac.c], tevAInputTable[ac.b], tevAInputTable[ac.c]);
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out.Write(" %s",tevBiasTable[ac.bias]);
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if (ac.shift>0)
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out.Write(")%s", tevScaleTable[ac.shift]);
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WriteTevRegular(out, "a", ac.bias, ac.op, ac.clamp, ac.shift);
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}
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else
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{
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const char *function_table[] =
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{
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"(((%s.r&255) > (%s.r&255)) ? (%s.a&255) : 0)", // TEVCMP_R8_GT
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"(((%s.r&255) == (%s.r&255)) ? (%s.a&255) : 0)", // TEVCMP_R8_EQ
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"((idot((%s.rgb&255), comp16) > idot((%s.rgb&255), comp16)) ? (%s.a&255) : 0)", // TEVCMP_GR16_GT
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"((idot((%s.rgb&255), comp16) == idot((%s.rgb&255), comp16)) ? (%s.a&255) : 0)", // TEVCMP_GR16_EQ
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"((idot((%s.rgb&255), comp24) > idot((%s.rgb&255), comp24)) ? (%s.a&255) : 0)", // TEVCMP_BGR24_GT
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"((idot((%s.rgb&255), comp24) == idot((%s.rgb&255), comp24)) ? (%s.a&255) : 0)", // TEVCMP_BGR24_EQ
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"(((%s.a&255) > (%s.a&255)) ? (%s.a&255) : 0)", // TEVCMP_A8_GT
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"(((%s.a&255) == (%s.a&255)) ? (%s.a&255) : 0)" // TEVCMP_A8_EQ
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"((tevin_a.r > tevin_b.r) ? tevin_c.a : 0)", // TEVCMP_R8_GT
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"((tevin_a.r == tevin_b.r) ? tevin_c.a : 0)", // TEVCMP_R8_EQ
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"((idot(tevin_a.rgb, comp16) > idot(tevin_b.rgb, comp16)) ? tevin_c.a : 0)", // TEVCMP_GR16_GT
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"((idot(tevin_a.rgb, comp16) == idot(tevin_b.rgb, comp16)) ? tevin_c.a : 0)", // TEVCMP_GR16_EQ
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"((idot(tevin_a.rgb, comp24) > idot(tevin_b.rgb, comp24)) ? tevin_c.a : 0)", // TEVCMP_BGR24_GT
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"((idot(tevin_a.rgb, comp24) == idot(tevin_b.rgb, comp24)) ? tevin_c.a : 0)", // TEVCMP_BGR24_EQ
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"((tevin_a.a > tevin_b.a) ? tevin_c.a : 0)", // TEVCMP_A8_GT
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"((tevin_a.a == tevin_b.a) ? tevin_c.a : 0)" // TEVCMP_A8_EQ
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};
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int mode = (ac.shift<<1)|ac.op;
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out.Write(" %s.a + ", tevAInputTable[ac.d]);
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out.Write(function_table[mode], tevAInputTable[ac.a],
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tevAInputTable[ac.b], tevAInputTable[ac.c]);
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out.Write(" tevin_d.a + ");
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out.Write(function_table[mode]);
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}
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if (ac.clamp)
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out.Write(", 0, 255)");
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@ -869,6 +827,59 @@ static inline void WriteStage(T& out, pixel_shader_uid_data& uid_data, int n, AP
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out.Write(";\n\n");
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}
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template<class T>
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static inline void WriteTevRegular(T& out, const char* components, int bias, int op, int clamp, int shift)
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{
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const char *tevScaleTableLeft[] =
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{
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"", // SCALE_1
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" << 1", // SCALE_2
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" << 2", // SCALE_4
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"", // DIVIDE_2
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};
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const char *tevScaleTableRight[] =
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{
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"", // SCALE_1
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"", // SCALE_2
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"", // SCALE_4
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" >> 1", // DIVIDE_2
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};
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const char *tevLerpBias[] = // indexed by 2*op+(shift==3)
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{
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"",
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" + 128",
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"",
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" + 127",
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};
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const char *tevBiasTable[] =
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{
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"", // ZERO,
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" + 128", // ADDHALF,
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" - 128", // SUBHALF,
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"",
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};
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const char *tevOpTable[] = {
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"+", // TEVOP_ADD = 0,
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"-", // TEVOP_SUB = 1,
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};
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// Regular TEV stage: (d + bias + lerp(a,b,c)) * scale
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// The GC/Wii GPU uses a very sophisticated algorithm for scale-lerping:
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// - c is scaled from 0..255 to 0..256, which allows dividing the result by 256 instead of 255
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// - if scale is bigger than one, it is moved inside the lerp calculation for increased accuracy
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// - a rounding bias is added before dividing by 256
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out.Write("(((tevin_d.%s%s)%s)", components, tevBiasTable[bias], tevScaleTableLeft[shift]);
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out.Write(" %s ", tevOpTable[op]);
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out.Write("((((tevin_a.%s*256 + (tevin_b.%s-tevin_a.%s)*(tevin_c.%s+(tevin_c.%s>>7)))%s)%s)>>8)",
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components, components, components, components, components,
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tevScaleTableLeft[shift], tevLerpBias[2*op+(shift==3)]);
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out.Write(")%s", tevScaleTableRight[shift]);
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}
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template<class T>
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static inline void SampleTexture(T& out, const char *texcoords, const char *texswap, int texmap, API_TYPE ApiType)
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{
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