234 lines
6.3 KiB
C
234 lines
6.3 KiB
C
// Copyright (C) 2003 Dolphin Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official SVN repository and contact information can be found at
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// http://code.google.com/p/dolphin-emu/
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#ifndef GCOGL_PIXELSHADER_H
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#define GCOGL_PIXELSHADER_H
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#include "VideoCommon.h"
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#include "ShaderGenCommon.h"
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#include "BPMemory.h"
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#define I_COLORS "color"
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#define I_KCOLORS "k"
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#define I_ALPHA "alphaRef"
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#define I_TEXDIMS "texdim"
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#define I_ZBIAS "czbias"
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#define I_INDTEXSCALE "cindscale"
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#define I_INDTEXMTX "cindmtx"
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#define I_FOG "cfog"
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#define I_PLIGHTS "cPLights"
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#define I_PMATERIALS "cPmtrl"
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#define C_COLORMATRIX 0 // 0
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#define C_COLORS 0 // 0
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#define C_KCOLORS (C_COLORS + 4) // 4
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#define C_ALPHA (C_KCOLORS + 4) // 8
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#define C_TEXDIMS (C_ALPHA + 1) // 9
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#define C_ZBIAS (C_TEXDIMS + 8) //17
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#define C_INDTEXSCALE (C_ZBIAS + 2) //19
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#define C_INDTEXMTX (C_INDTEXSCALE + 2) //21
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#define C_FOG (C_INDTEXMTX + 6) //27
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#define C_PLIGHTS (C_FOG + 3)
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#define C_PMATERIALS (C_PLIGHTS + 40)
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#define C_PENVCONST_END (C_PMATERIALS + 4)
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// Different ways to achieve rendering with destination alpha
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enum DSTALPHA_MODE
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{
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DSTALPHA_NONE, // Render normally, without destination alpha
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DSTALPHA_ALPHA_PASS, // Render normally first, then render again for alpha
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DSTALPHA_DUAL_SOURCE_BLEND // Use dual-source blending
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};
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// Annoying sure, can be removed once we get up to GLSL ~1.3
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const s_svar PSVar_Loc[] = { {I_COLORS, C_COLORS, 4 },
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{I_KCOLORS, C_KCOLORS, 4 },
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{I_ALPHA, C_ALPHA, 1 },
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{I_TEXDIMS, C_TEXDIMS, 8 },
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{I_ZBIAS , C_ZBIAS, 2 },
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{I_INDTEXSCALE , C_INDTEXSCALE, 2 },
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{I_INDTEXMTX, C_INDTEXMTX, 6 },
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{I_FOG, C_FOG, 3 },
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{I_PLIGHTS, C_PLIGHTS, 40 },
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{I_PMATERIALS, C_PMATERIALS, 4 },
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};
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struct pixel_shader_uid_data
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{
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u32 components;
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DSTALPHA_MODE dstAlphaMode; // TODO: as u32 :2
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AlphaTest::TEST_RESULT Pretest; // TODO: As :2
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u32 nIndirectStagesUsed : 8;
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struct {
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u32 numtexgens : 4;
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u32 numtevstages : 4;
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u32 numindstages : 3;
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} genMode;
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struct
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{
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u32 unknown : 1;
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u32 projection : 1; // XF_TEXPROJ_X
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u32 inputform : 2; // XF_TEXINPUT_X
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u32 texgentype : 3; // XF_TEXGEN_X
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u32 sourcerow : 5; // XF_SRCGEOM_X
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u32 embosssourceshift : 3; // what generated texcoord to use
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u32 embosslightshift : 3; // light index that is used
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} texMtxInfo[8];
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struct
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{
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u32 bi0 : 3; // indirect tex stage 0 ntexmap
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u32 bc0 : 3; // indirect tex stage 0 ntexcoord
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u32 bi1 : 3;
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u32 bc1 : 3;
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u32 bi2 : 3;
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u32 bc3 : 3;
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u32 bi4 : 3;
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u32 bc4 : 3;
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void SetValues(int index, u32 texcoord, u32 texmap)
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{
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if (index == 0) { bc0 = texcoord; bi0 = texmap; }
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else if (index == 1) { bc1 = texcoord; bi1 = texmap; }
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else if (index == 2) { bc3 = texcoord; bi2 = texmap; }
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else if (index == 3) { bc4 = texcoord; bi4 = texmap; }
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}
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} tevindref;
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u32 tevorders_n_texcoord1 : 24; // 8 x 3 bit
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u32 tevorders_n_texcoord2 : 24; // 8 x 3 bit
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struct
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{
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u32 sw1 : 24; // 8 x 3 bit
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u32 sw2 : 24; // 8 x 3 bit
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u32 tw1 : 24; // 8 x 3 bit
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u32 tw2 : 24; // 8 x 3 bit
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u32 fb_addprev : 16; // 16 x 1 bit
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u32 bs : 32; // 16 x 2 bit
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u32 fmt : 32; // 16 x 2 bit
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u32 bt : 32; // 16 x 2 bit
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u32 bias1 : 24; // 8 x 3 bit
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u32 bias2 : 24; // 8 x 3 bit
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u32 mid1 : 32; // 8 x 4 bit
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u32 mid2 : 32; // 8 x 4 bit
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// NOTE: These assume that the affected bits are zero before calling
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void Set_sw(int index, u32 val)
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{
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if (index < 8) sw1 |= val << (3*index);
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else sw2 |= val << (3*index - 24);
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}
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void Set_tw(int index, u32 val)
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{
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if (index < 8) tw1 |= val << (3*index);
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else tw2 |= val << (3*index - 24);
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}
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void Set_bias(int index, u32 val)
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{
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if (index < 8) bias1 |= val << (3*index);
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else bias2 |= val << (3*index - 24);
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}
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void Set_mid(int index, u32 val)
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{
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if (index < 8) mid1 |= val << (4*index);
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else mid2 |= val << (4*index - 32);
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}
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} tevind_n;
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u32 tevksel_n_swap : 32; // 8 x 2 bit (swap1) + 8 x 2 bit (swap2)
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struct
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{
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union {
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struct //abc=8bit,d=10bit
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{
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u32 d : 4; // TEVSELCC_X
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u32 c : 4; // TEVSELCC_X
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u32 b : 4; // TEVSELCC_X
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u32 a : 4; // TEVSELCC_X
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u32 bias : 2;
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u32 op : 1;
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u32 clamp : 1;
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u32 shift : 2;
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u32 dest : 2; //1,2,3
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};
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u32 hex : 24;
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} colorC;
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union {
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struct
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{
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u32 rswap : 2;
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u32 tswap : 2;
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u32 d : 3; // TEVSELCA_
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u32 c : 3; // TEVSELCA_
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u32 b : 3; // TEVSELCA_
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u32 a : 3; // TEVSELCA_
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u32 bias : 2; //GXTevBias
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u32 op : 1;
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u32 clamp : 1;
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u32 shift : 2;
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u32 dest : 2; //1,2,3
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};
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u32 hex : 24;
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} alphaC;
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} combiners[16];
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struct
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{
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u32 comp0 : 3;
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u32 comp1 : 3;
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u32 logic : 2;
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// TODO: ref???
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u32 use_zcomploc_hack : 1;
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} alpha_test;
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union {
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struct
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{
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u32 proj : 1; // 0 - perspective, 1 - orthographic
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u32 fsel : 3; // 0 - off, 2 - linear, 4 - exp, 5 - exp2, 6 - backward exp, 7 - backward exp2
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u32 RangeBaseEnabled : 1;
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};
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u32 hex : 4;
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} fog;
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union {
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struct {
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u32 op : 2;
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};
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u32 hex : 2;
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} ztex;
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u32 per_pixel_depth : 1;
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u32 bHasIndStage : 16;
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u32 xfregs_numTexGen_numTexGens : 4;
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LightingUidData lighting;
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};
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typedef ShaderUid<pixel_shader_uid_data> PixelShaderUid;
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typedef ShaderCode PixelShaderCode; // TODO: Obsolete
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typedef ShaderConstantProfile PixelShaderConstantProfile; // TODO: Obsolete
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void GeneratePixelShaderCode(PixelShaderCode& object, DSTALPHA_MODE dstAlphaMode, API_TYPE ApiType, u32 components);
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void GetPixelShaderUid(PixelShaderUid& object, DSTALPHA_MODE dstAlphaMode, API_TYPE ApiType, u32 components);
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void GetPixelShaderConstantProfile(PixelShaderConstantProfile& object, DSTALPHA_MODE dstAlphaMode, API_TYPE ApiType, u32 components);
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#endif // GCOGL_PIXELSHADER_H
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