mirror of
https://github.com/hrydgard/ppsspp.git
synced 2025-04-02 11:01:50 -04:00
738 lines
27 KiB
C++
738 lines
27 KiB
C++
// Copyright (c) 2012- PPSSPP 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 or later versions.
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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 git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#include <cstdio>
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#include <locale.h>
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#include "Common/StringUtils.h"
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#include "GPU/ge_constants.h"
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#include "GPU/GPUState.h"
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#include "Core/Config.h"
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#include "GPU/Directx9/VertexShaderGeneratorHLSL.h"
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#include "GPU/Common/VertexDecoderCommon.h"
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#include "GPU/Common/ShaderUniforms.h"
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#undef WRITE
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#define WRITE p+=sprintf
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static const char * const boneWeightAttrDecl[9] = {
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"#ERROR#",
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"float a_w1:TEXCOORD1;\n",
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"vec2 a_w1:TEXCOORD1;\n",
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"vec3 a_w1:TEXCOORD1;\n",
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"vec4 a_w1:TEXCOORD1;\n",
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"vec4 a_w1:TEXCOORD1;\n float a_w2:TEXCOORD2;\n",
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"vec4 a_w1:TEXCOORD1;\n vec2 a_w2:TEXCOORD2;\n",
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"vec4 a_w1:TEXCOORD1;\n vec3 a_w2:TEXCOORD2;\n",
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"vec4 a_w1:TEXCOORD1;\n vec4 a_w2:TEXCOORD2;\n",
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};
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bool GenerateVertexShaderHLSL(const VShaderID &id, char *buffer, ShaderLanguage lang, std::string *errorString) {
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char *p = buffer;
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bool isModeThrough = id.Bit(VS_BIT_IS_THROUGH);
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bool lmode = id.Bit(VS_BIT_LMODE);
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bool doTexture = id.Bit(VS_BIT_DO_TEXTURE);
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bool doTextureTransform = id.Bit(VS_BIT_DO_TEXTURE_TRANSFORM);
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GETexMapMode uvGenMode = static_cast<GETexMapMode>(id.Bits(VS_BIT_UVGEN_MODE, 2));
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// this is only valid for some settings of uvGenMode
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GETexProjMapMode uvProjMode = static_cast<GETexProjMapMode>(id.Bits(VS_BIT_UVPROJ_MODE, 2));
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bool doShadeMapping = uvGenMode == GE_TEXMAP_ENVIRONMENT_MAP;
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bool doFlatShading = id.Bit(VS_BIT_FLATSHADE);
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bool useHWTransform = id.Bit(VS_BIT_USE_HW_TRANSFORM);
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bool hasColor = id.Bit(VS_BIT_HAS_COLOR) || !useHWTransform;
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bool hasNormal = id.Bit(VS_BIT_HAS_NORMAL) && useHWTransform;
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bool hasTexcoord = id.Bit(VS_BIT_HAS_TEXCOORD) || !useHWTransform;
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bool enableFog = id.Bit(VS_BIT_ENABLE_FOG);
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bool flipNormal = id.Bit(VS_BIT_NORM_REVERSE);
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int ls0 = id.Bits(VS_BIT_LS0, 2);
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int ls1 = id.Bits(VS_BIT_LS1, 2);
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bool enableBones = id.Bit(VS_BIT_ENABLE_BONES);
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bool enableLighting = id.Bit(VS_BIT_LIGHTING_ENABLE);
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int matUpdate = id.Bits(VS_BIT_MATERIAL_UPDATE, 3);
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bool doBezier = id.Bit(VS_BIT_BEZIER) && !enableBones && useHWTransform;
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bool doSpline = id.Bit(VS_BIT_SPLINE) && !enableBones && useHWTransform;
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if ((doBezier || doSpline) && !hasNormal) {
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// Bad usage.
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*errorString = "Invalid flags - tess requires normal.";
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return false;
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}
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bool hasColorTess = id.Bit(VS_BIT_HAS_COLOR_TESS);
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bool hasTexcoordTess = id.Bit(VS_BIT_HAS_TEXCOORD_TESS);
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bool hasNormalTess = id.Bit(VS_BIT_HAS_NORMAL_TESS);
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bool flipNormalTess = id.Bit(VS_BIT_NORM_REVERSE_TESS);
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DoLightComputation doLight[4] = { LIGHT_OFF, LIGHT_OFF, LIGHT_OFF, LIGHT_OFF };
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if (useHWTransform) {
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int shadeLight0 = doShadeMapping ? ls0 : -1;
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int shadeLight1 = doShadeMapping ? ls1 : -1;
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for (int i = 0; i < 4; i++) {
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if (i == shadeLight0 || i == shadeLight1)
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doLight[i] = LIGHT_SHADE;
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if (enableLighting && id.Bit(VS_BIT_LIGHT0_ENABLE + i))
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doLight[i] = LIGHT_FULL;
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}
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}
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int numBoneWeights = 0;
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int boneWeightScale = id.Bits(VS_BIT_WEIGHT_FMTSCALE, 2);
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if (enableBones) {
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numBoneWeights = 1 + id.Bits(VS_BIT_BONES, 3);
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}
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// Output some compatibility defines
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WRITE(p, "#define vec2 float2\n");
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WRITE(p, "#define vec3 float3\n");
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WRITE(p, "#define vec4 float4\n");
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WRITE(p, "#define mat4 float4x4\n");
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WRITE(p, "#define mat3x4 float4x3\n"); // note how the conventions are backwards
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WRITE(p, "#define splat3(x) vec3(x, x, x)\n");
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if (lang == HLSL_DX9) {
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WRITE(p, "#pragma warning( disable : 3571 )\n");
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if (isModeThrough) {
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WRITE(p, "float4x4 u_proj_through : register(c%i);\n", CONST_VS_PROJ_THROUGH);
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} else {
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WRITE(p, "float4x4 u_proj : register(c%i);\n", CONST_VS_PROJ);
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// Add all the uniforms we'll need to transform properly.
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}
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if (enableFog) {
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WRITE(p, "vec2 u_fogcoef : register(c%i);\n", CONST_VS_FOGCOEF);
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}
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if (useHWTransform || !hasColor)
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WRITE(p, "vec4 u_matambientalpha : register(c%i);\n", CONST_VS_MATAMBIENTALPHA); // matambient + matalpha
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if (useHWTransform) {
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// When transforming by hardware, we need a great deal more uniforms...
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WRITE(p, "mat3x4 u_world : register(c%i);\n", CONST_VS_WORLD);
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WRITE(p, "mat3x4 u_view : register(c%i);\n", CONST_VS_VIEW);
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if (doTextureTransform)
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WRITE(p, "mat3x4 u_texmtx : register(c%i);\n", CONST_VS_TEXMTX);
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if (enableBones) {
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#ifdef USE_BONE_ARRAY
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WRITE(p, "mat3x4 u_bone[%i] : register(c%i);\n", numBones, CONST_VS_BONE0);
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#else
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for (int i = 0; i < numBoneWeights; i++) {
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WRITE(p, "mat3x4 u_bone%i : register(c%i);\n", i, CONST_VS_BONE0 + i * 3);
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}
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#endif
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}
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if (doTexture) {
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WRITE(p, "vec4 u_uvscaleoffset : register(c%i);\n", CONST_VS_UVSCALEOFFSET);
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}
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for (int i = 0; i < 4; i++) {
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if (doLight[i] != LIGHT_OFF) {
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// This is needed for shade mapping
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WRITE(p, "vec3 u_lightpos%i : register(c%i);\n", i, CONST_VS_LIGHTPOS + i);
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}
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if (doLight[i] == LIGHT_FULL) {
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GELightType type = static_cast<GELightType>(id.Bits(VS_BIT_LIGHT0_TYPE + 4 * i, 2));
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GELightComputation comp = static_cast<GELightComputation>(id.Bits(VS_BIT_LIGHT0_COMP + 4 * i, 2));
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if (type != GE_LIGHTTYPE_DIRECTIONAL)
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WRITE(p, "vec3 u_lightatt%i : register(c%i);\n", i, CONST_VS_LIGHTATT + i);
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if (type == GE_LIGHTTYPE_SPOT || type == GE_LIGHTTYPE_UNKNOWN) {
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WRITE(p, "vec3 u_lightdir%i : register(c%i);\n", i, CONST_VS_LIGHTDIR + i);
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WRITE(p, "vec4 u_lightangle_spotCoef%i : register(c%i);\n", i, CONST_VS_LIGHTANGLE_SPOTCOEF + i);
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}
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WRITE(p, "vec3 u_lightambient%i : register(c%i);\n", i, CONST_VS_LIGHTAMBIENT + i);
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WRITE(p, "vec3 u_lightdiffuse%i : register(c%i);\n", i, CONST_VS_LIGHTDIFFUSE + i);
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if (comp == GE_LIGHTCOMP_BOTH) {
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WRITE(p, "vec3 u_lightspecular%i : register(c%i);\n", i, CONST_VS_LIGHTSPECULAR + i);
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}
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}
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}
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if (enableLighting) {
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WRITE(p, "vec4 u_ambient : register(c%i);\n", CONST_VS_AMBIENT);
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if ((matUpdate & 2) == 0 || !hasColor)
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WRITE(p, "vec3 u_matdiffuse : register(c%i);\n", CONST_VS_MATDIFFUSE);
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// if ((matUpdate & 4) == 0)
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WRITE(p, "vec4 u_matspecular : register(c%i);\n", CONST_VS_MATSPECULAR); // Specular coef is contained in alpha
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WRITE(p, "vec3 u_matemissive : register(c%i);\n", CONST_VS_MATEMISSIVE);
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}
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}
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if (!isModeThrough && gstate_c.Supports(GPU_ROUND_DEPTH_TO_16BIT)) {
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WRITE(p, "vec4 u_depthRange : register(c%i);\n", CONST_VS_DEPTHRANGE);
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}
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if (!isModeThrough) {
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WRITE(p, "vec4 u_cullRangeMin : register(c%i);\n", CONST_VS_CULLRANGEMIN);
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WRITE(p, "vec4 u_cullRangeMax : register(c%i);\n", CONST_VS_CULLRANGEMAX);
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}
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} else {
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WRITE(p, "cbuffer base : register(b0) {\n%s};\n", cb_baseStr);
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WRITE(p, "cbuffer lights: register(b1) {\n%s};\n", cb_vs_lightsStr);
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WRITE(p, "cbuffer bones : register(b2) {\n%s};\n", cb_vs_bonesStr);
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}
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bool scaleUV = !isModeThrough && (uvGenMode == GE_TEXMAP_TEXTURE_COORDS || uvGenMode == GE_TEXMAP_UNKNOWN);
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// And the "varyings".
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bool texCoordInVec3 = false;
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if (useHWTransform) {
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WRITE(p, "struct VS_IN { \n");
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if ((doSpline || doBezier) && lang == HLSL_D3D11) {
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WRITE(p, " uint instanceId : SV_InstanceID;\n");
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}
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if (enableBones) {
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WRITE(p, " %s", boneWeightAttrDecl[numBoneWeights]);
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}
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if (doTexture && hasTexcoord) {
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WRITE(p, " vec2 texcoord : TEXCOORD0;\n");
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}
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if (hasColor) {
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WRITE(p, " vec4 color0 : COLOR0;\n");
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}
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if (hasNormal) {
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WRITE(p, " vec3 normal : NORMAL;\n");
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}
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WRITE(p, " vec3 position : POSITION;\n");
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WRITE(p, "};\n");
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} else {
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WRITE(p, "struct VS_IN {\n");
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WRITE(p, " vec4 position : POSITION;\n");
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if (doTexture && hasTexcoord) {
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if (doTextureTransform && !isModeThrough) {
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texCoordInVec3 = true;
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WRITE(p, " vec3 texcoord : TEXCOORD0;\n");
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}
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else
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WRITE(p, " vec2 texcoord : TEXCOORD0;\n");
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}
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if (hasColor) {
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WRITE(p, " vec4 color0 : COLOR0;\n");
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}
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// only software transform supplies color1 as vertex data
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if (lmode) {
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WRITE(p, " vec4 color1 : COLOR1;\n");
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}
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WRITE(p, "};\n");
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}
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WRITE(p, "struct VS_OUT {\n");
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if (doTexture) {
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WRITE(p, " vec3 v_texcoord : TEXCOORD0;\n");
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}
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const char *colorInterpolation = doFlatShading && lang == HLSL_D3D11 ? "nointerpolation " : "";
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WRITE(p, " %svec4 v_color0 : COLOR0;\n", colorInterpolation);
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if (lmode)
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WRITE(p, " vec3 v_color1 : COLOR1;\n");
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if (enableFog) {
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WRITE(p, " float v_fogdepth: TEXCOORD1;\n");
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}
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if (lang == HLSL_DX9) {
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WRITE(p, " vec4 gl_Position : POSITION;\n");
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} else {
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WRITE(p, " vec4 gl_Position : SV_Position;\n");
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}
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WRITE(p, "};\n");
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// Confirmed: Through mode gets through exactly the same in GL and D3D in Phantasy Star: Text is 38023.0 in the test scene.
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if (!isModeThrough && gstate_c.Supports(GPU_ROUND_DEPTH_TO_16BIT)) {
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// Apply the projection and viewport to get the Z buffer value, floor to integer, undo the viewport and projection.
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// The Z range in D3D is different but we compensate for that using parameters.
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WRITE(p, "\nvec4 depthRoundZVP(vec4 v) {\n");
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WRITE(p, " float z = v.z / v.w;\n");
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WRITE(p, " z = (z * u_depthRange.x + u_depthRange.y);\n");
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WRITE(p, " z = floor(z);\n");
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WRITE(p, " z = (z - u_depthRange.z) * u_depthRange.w;\n");
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WRITE(p, " return vec4(v.x, v.y, z * v.w, v.w);\n");
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WRITE(p, "}\n\n");
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}
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// Hardware tessellation
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if (doSpline || doBezier) {
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if (lang == HLSL_D3D11) {
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WRITE(p, "struct TessData {\n");
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WRITE(p, " vec3 pos; float pad1;\n");
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WRITE(p, " vec2 tex; vec2 pad2;\n");
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WRITE(p, " vec4 col;\n");
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WRITE(p, "};\n");
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WRITE(p, "StructuredBuffer<TessData> tess_data : register(t0);\n");
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WRITE(p, "struct TessWeight {\n");
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WRITE(p, " vec4 basis;\n");
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WRITE(p, " vec4 deriv;\n");
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WRITE(p, "};\n");
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WRITE(p, "StructuredBuffer<TessWeight> tess_weights_u : register(t1);\n");
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WRITE(p, "StructuredBuffer<TessWeight> tess_weights_v : register(t2);\n");
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}
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const char *init[3] = { "0.0, 0.0", "0.0, 0.0, 0.0", "0.0, 0.0, 0.0, 0.0" };
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for (int i = 2; i <= 4; i++) {
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// Define 3 types vec2, vec3, vec4
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WRITE(p, "float%d tess_sample(in float%d points[16], float4x4 weights) {\n", i, i);
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WRITE(p, " float%d pos = float%d(%s);\n", i, i, init[i - 2]);
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for (int v = 0; v < 4; ++v) {
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for (int u = 0; u < 4; ++u) {
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WRITE(p, " pos += weights[%i][%i] * points[%i];\n", v, u, v * 4 + u);
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}
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}
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WRITE(p, " return pos;\n");
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WRITE(p, "}\n");
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}
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WRITE(p, "float4x4 outerProduct(vec4 u, vec4 v) {\n");
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WRITE(p, " return mul((float4x1)v, (float1x4)u);\n");
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WRITE(p, "}\n");
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WRITE(p, "struct Tess {\n");
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WRITE(p, " vec3 pos;\n");
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if (doTexture)
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WRITE(p, " vec2 tex;\n");
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WRITE(p, " vec4 col;\n");
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if (hasNormalTess)
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WRITE(p, " vec3 nrm;\n");
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WRITE(p, "};\n");
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WRITE(p, "void tessellate(in VS_IN In, out Tess tess) {\n");
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WRITE(p, " int2 point_pos = int2(In.position.z, In.normal.z)%s;\n", doBezier ? " * 3" : "");
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WRITE(p, " int2 weight_idx = int2(In.position.xy);\n");
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// Load 4x4 control points
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WRITE(p, " vec3 _pos[16];\n");
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WRITE(p, " vec2 _tex[16];\n");
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WRITE(p, " vec4 _col[16];\n");
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WRITE(p, " int index;\n");
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for (int i = 0; i < 4; i++) {
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for (int j = 0; j < 4; j++) {
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WRITE(p, " index = (%i + point_pos.y) * u_spline_counts + (%i + point_pos.x);\n", i, j);
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WRITE(p, " _pos[%i] = tess_data[index].pos;\n", i * 4 + j);
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if (doTexture && hasTexcoordTess)
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WRITE(p, " _tex[%i] = tess_data[index].tex;\n", i * 4 + j);
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if (hasColorTess)
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WRITE(p, " _col[%i] = tess_data[index].col;\n", i * 4 + j);
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}
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}
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// Basis polynomials as weight coefficients
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WRITE(p, " vec4 basis_u = tess_weights_u[weight_idx.x].basis;\n");
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WRITE(p, " vec4 basis_v = tess_weights_v[weight_idx.y].basis;\n");
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WRITE(p, " float4x4 basis = outerProduct(basis_u, basis_v);\n");
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// Tessellate
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WRITE(p, " tess.pos = tess_sample(_pos, basis);\n");
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if (doTexture) {
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if (hasTexcoordTess)
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WRITE(p, " tess.tex = tess_sample(_tex, basis);\n");
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else
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WRITE(p, " tess.tex = In.normal.xy;\n");
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}
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if (hasColorTess)
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WRITE(p, " tess.col = tess_sample(_col, basis);\n");
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else
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WRITE(p, " tess.col = u_matambientalpha;\n");
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if (hasNormalTess) {
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// Derivatives as weight coefficients
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WRITE(p, " vec4 deriv_u = tess_weights_u[weight_idx.x].deriv;\n");
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WRITE(p, " vec4 deriv_v = tess_weights_v[weight_idx.y].deriv;\n");
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WRITE(p, " vec3 du = tess_sample(_pos, outerProduct(deriv_u, basis_v));\n");
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WRITE(p, " vec3 dv = tess_sample(_pos, outerProduct(basis_u, deriv_v));\n");
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WRITE(p, " tess.nrm = normalize(cross(du, dv));\n");
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}
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WRITE(p, "}\n");
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}
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WRITE(p, "VS_OUT main(VS_IN In) {\n");
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WRITE(p, " VS_OUT Out;\n");
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if (!useHWTransform) {
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// Simple pass-through of vertex data to fragment shader
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if (doTexture) {
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if (texCoordInVec3) {
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WRITE(p, " Out.v_texcoord = In.texcoord;\n");
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} else {
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WRITE(p, " Out.v_texcoord = vec3(In.texcoord, 1.0);\n");
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}
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}
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if (hasColor) {
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WRITE(p, " Out.v_color0 = In.color0;\n");
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if (lmode)
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WRITE(p, " Out.v_color1 = In.color1.rgb;\n");
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} else {
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WRITE(p, " Out.v_color0 = In.u_matambientalpha;\n");
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if (lmode)
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WRITE(p, " Out.v_color1 = vec3(0.0);\n");
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}
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if (enableFog) {
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WRITE(p, " Out.v_fogdepth = In.position.w;\n");
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}
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if (lang == HLSL_D3D11) {
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if (isModeThrough) {
|
|
WRITE(p, " float4 outPos = mul(u_proj_through, vec4(In.position.xyz, 1.0));\n");
|
|
} else {
|
|
if (gstate_c.Supports(GPU_ROUND_DEPTH_TO_16BIT)) {
|
|
WRITE(p, " vec4 outPos = depthRoundZVP(mul(u_proj, vec4(In.position.xyz, 1.0)));\n");
|
|
} else {
|
|
WRITE(p, " vec4 outPos = mul(u_proj, vec4(In.position.xyz, 1.0));\n");
|
|
}
|
|
}
|
|
} else {
|
|
if (isModeThrough) {
|
|
WRITE(p, " vec4 outPos = mul(vec4(In.position.xyz, 1.0), u_proj_through);\n");
|
|
} else {
|
|
if (gstate_c.Supports(GPU_ROUND_DEPTH_TO_16BIT)) {
|
|
WRITE(p, " vec4 outPos = depthRoundZVP(mul(vec4(In.position.xyz, 1.0), u_proj));\n");
|
|
} else {
|
|
WRITE(p, " vec4 outPos = mul(vec4(In.position.xyz, 1.0), u_proj);\n");
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
// Step 1: World Transform / Skinning
|
|
if (!enableBones) {
|
|
if (doSpline || doBezier) {
|
|
// Hardware tessellation
|
|
WRITE(p, " Tess tess;\n");
|
|
WRITE(p, " tessellate(In, tess);\n");
|
|
|
|
WRITE(p, " vec3 worldpos = mul(vec4(tess.pos.xyz, 1.0), u_world);\n");
|
|
if (hasNormalTess)
|
|
WRITE(p, " vec3 worldnormal = normalize(mul(vec4(%stess.nrm, 0.0), u_world));\n", flipNormalTess ? "-" : "");
|
|
else
|
|
WRITE(p, " vec3 worldnormal = vec3(0.0, 0.0, 1.0);\n");
|
|
} else {
|
|
// No skinning, just standard T&L.
|
|
WRITE(p, " vec3 worldpos = mul(vec4(In.position.xyz, 1.0), u_world);\n");
|
|
if (hasNormal)
|
|
WRITE(p, " vec3 worldnormal = normalize(mul(vec4(%sIn.normal, 0.0), u_world));\n", flipNormal ? "-" : "");
|
|
else
|
|
WRITE(p, " vec3 worldnormal = vec3(0.0, 0.0, 1.0);\n");
|
|
}
|
|
} else {
|
|
static const char * const boneWeightAttr[8] = {
|
|
"a_w1.x", "a_w1.y", "a_w1.z", "a_w1.w",
|
|
"a_w2.x", "a_w2.y", "a_w2.z", "a_w2.w",
|
|
};
|
|
|
|
if (lang == HLSL_D3D11) {
|
|
if (numBoneWeights == 1)
|
|
WRITE(p, " mat3x4 skinMatrix = mul(In.a_w1, u_bone[0])");
|
|
else
|
|
WRITE(p, " float4x3 skinMatrix = mul(In.a_w1.x, u_bone[0])");
|
|
for (int i = 1; i < numBoneWeights; i++) {
|
|
const char *weightAttr = boneWeightAttr[i];
|
|
// workaround for "cant do .x of scalar" issue
|
|
if (numBoneWeights == 1 && i == 0) weightAttr = "a_w1";
|
|
if (numBoneWeights == 5 && i == 4) weightAttr = "a_w2";
|
|
WRITE(p, " + mul(In.%s, u_bone[%i])", weightAttr, i);
|
|
}
|
|
} else {
|
|
if (numBoneWeights == 1)
|
|
WRITE(p, " float4x3 skinMatrix = mul(In.a_w1, u_bone0)");
|
|
else
|
|
WRITE(p, " float4x3 skinMatrix = mul(In.a_w1.x, u_bone0)");
|
|
for (int i = 1; i < numBoneWeights; i++) {
|
|
const char *weightAttr = boneWeightAttr[i];
|
|
// workaround for "cant do .x of scalar" issue
|
|
if (numBoneWeights == 1 && i == 0) weightAttr = "a_w1";
|
|
if (numBoneWeights == 5 && i == 4) weightAttr = "a_w2";
|
|
WRITE(p, " + mul(In.%s, u_bone%i)", weightAttr, i);
|
|
}
|
|
}
|
|
|
|
WRITE(p, ";\n");
|
|
|
|
// Trying to simplify this results in bugs in LBP...
|
|
WRITE(p, " vec3 skinnedpos = mul(float4(In.position.xyz, 1.0), skinMatrix);\n");
|
|
WRITE(p, " vec3 worldpos = mul(float4(skinnedpos, 1.0), u_world);\n");
|
|
|
|
if (hasNormal) {
|
|
WRITE(p, " vec3 skinnednormal = mul(float4(%sIn.normal, 0.0), skinMatrix);\n", flipNormal ? "-" : "");
|
|
} else {
|
|
WRITE(p, " vec3 skinnednormal = mul(float4(0.0, 0.0, %s1.0, 0.0), skinMatrix);\n", flipNormal ? "-" : "");
|
|
}
|
|
WRITE(p, " vec3 worldnormal = normalize(mul(float4(skinnednormal, 0.0), u_world));\n");
|
|
}
|
|
|
|
WRITE(p, " vec4 viewPos = vec4(mul(vec4(worldpos, 1.0), u_view), 1.0);\n");
|
|
|
|
if (lang == HLSL_D3D11) {
|
|
// Final view and projection transforms.
|
|
if (gstate_c.Supports(GPU_ROUND_DEPTH_TO_16BIT)) {
|
|
WRITE(p, " vec4 outPos = depthRoundZVP(mul(u_proj, viewPos));\n");
|
|
} else {
|
|
WRITE(p, " vec4 outPos = mul(u_proj, viewPos);\n");
|
|
}
|
|
} else {
|
|
// Final view and projection transforms.
|
|
if (gstate_c.Supports(GPU_ROUND_DEPTH_TO_16BIT)) {
|
|
WRITE(p, " vec4 outPos = depthRoundZVP(mul(viewPos, u_proj));\n");
|
|
} else {
|
|
WRITE(p, " vec4 outPos = mul(viewPos, u_proj);\n");
|
|
}
|
|
}
|
|
|
|
// TODO: Declare variables for dots for shade mapping if needed.
|
|
|
|
const char *ambientStr = (matUpdate & 1) && hasColor ? "In.color0" : "u_matambientalpha";
|
|
const char *diffuseStr = (matUpdate & 2) && hasColor ? "In.color0.rgb" : "u_matdiffuse";
|
|
const char *specularStr = (matUpdate & 4) && hasColor ? "In.color0.rgb" : "u_matspecular.rgb";
|
|
if (doBezier || doSpline) {
|
|
// TODO: Probably, should use hasColorTess but FF4 has a problem with drawing the background.
|
|
ambientStr = (matUpdate & 1) && hasColor ? "tess.col" : "u_matambientalpha";
|
|
diffuseStr = (matUpdate & 2) && hasColor ? "tess.col.rgb" : "u_matdiffuse";
|
|
specularStr = (matUpdate & 4) && hasColor ? "tess.col.rgb" : "u_matspecular.rgb";
|
|
}
|
|
|
|
bool diffuseIsZero = true;
|
|
bool specularIsZero = true;
|
|
bool distanceNeeded = false;
|
|
bool anySpots = false;
|
|
if (enableLighting) {
|
|
WRITE(p, " vec4 lightSum0 = u_ambient * %s + float4(u_matemissive, 0.0);\n", ambientStr);
|
|
|
|
for (int i = 0; i < 4; i++) {
|
|
GELightType type = static_cast<GELightType>(id.Bits(VS_BIT_LIGHT0_TYPE + 4 * i, 2));
|
|
GELightComputation comp = static_cast<GELightComputation>(id.Bits(VS_BIT_LIGHT0_COMP + 4 * i, 2));
|
|
if (doLight[i] != LIGHT_FULL)
|
|
continue;
|
|
diffuseIsZero = false;
|
|
if (comp == GE_LIGHTCOMP_BOTH)
|
|
specularIsZero = false;
|
|
if (type != GE_LIGHTTYPE_DIRECTIONAL)
|
|
distanceNeeded = true;
|
|
if (type == GE_LIGHTTYPE_SPOT || type == GE_LIGHTTYPE_UNKNOWN)
|
|
anySpots = true;
|
|
}
|
|
|
|
if (!specularIsZero) {
|
|
WRITE(p, " vec3 lightSum1 = 0;\n");
|
|
}
|
|
if (!diffuseIsZero) {
|
|
WRITE(p, " vec3 toLight;\n");
|
|
WRITE(p, " vec3 diffuse;\n");
|
|
}
|
|
if (distanceNeeded) {
|
|
WRITE(p, " float distance;\n");
|
|
WRITE(p, " float lightScale;\n");
|
|
}
|
|
WRITE(p, " float ldot;\n");
|
|
if (anySpots) {
|
|
WRITE(p, " float angle;\n");
|
|
}
|
|
}
|
|
|
|
// Calculate lights if needed. If shade mapping is enabled, lights may need to be
|
|
// at least partially calculated.
|
|
for (int i = 0; i < 4; i++) {
|
|
if (doLight[i] != LIGHT_FULL)
|
|
continue;
|
|
|
|
GELightType type = static_cast<GELightType>(id.Bits(VS_BIT_LIGHT0_TYPE + 4 * i, 2));
|
|
GELightComputation comp = static_cast<GELightComputation>(id.Bits(VS_BIT_LIGHT0_COMP + 4 * i, 2));
|
|
|
|
if (type == GE_LIGHTTYPE_DIRECTIONAL) {
|
|
// We prenormalize light positions for directional lights.
|
|
WRITE(p, " toLight = u_lightpos%i;\n", i);
|
|
} else {
|
|
WRITE(p, " toLight = u_lightpos%i - worldpos;\n", i);
|
|
WRITE(p, " distance = length(toLight);\n");
|
|
WRITE(p, " toLight /= distance;\n");
|
|
}
|
|
|
|
bool doSpecular = comp == GE_LIGHTCOMP_BOTH;
|
|
bool poweredDiffuse = comp == GE_LIGHTCOMP_ONLYPOWDIFFUSE;
|
|
|
|
WRITE(p, " ldot = dot(toLight, worldnormal);\n");
|
|
if (poweredDiffuse) {
|
|
// pow(0.0, 0.0) may be undefined, but the PSP seems to treat it as 1.0.
|
|
// Seen in Tales of the World: Radiant Mythology (#2424.)
|
|
WRITE(p, " if (u_matspecular.a <= 0.0) {\n");
|
|
WRITE(p, " ldot = 1.0;\n");
|
|
WRITE(p, " } else {\n");
|
|
WRITE(p, " ldot = pow(max(ldot, 0.0), u_matspecular.a);\n");
|
|
WRITE(p, " }\n");
|
|
}
|
|
|
|
const char *timesLightScale = " * lightScale";
|
|
|
|
// Attenuation
|
|
switch (type) {
|
|
case GE_LIGHTTYPE_DIRECTIONAL:
|
|
timesLightScale = "";
|
|
break;
|
|
case GE_LIGHTTYPE_POINT:
|
|
WRITE(p, " lightScale = clamp(1.0 / dot(u_lightatt%i, vec3(1.0, distance, distance*distance)), 0.0, 1.0);\n", i);
|
|
break;
|
|
case GE_LIGHTTYPE_SPOT:
|
|
case GE_LIGHTTYPE_UNKNOWN:
|
|
WRITE(p, " angle = length(u_lightdir%i) == 0.0 ? 0.0 : dot(normalize(u_lightdir%i), toLight);\n", i, i);
|
|
WRITE(p, " if (angle >= u_lightangle_spotCoef%i.x) {\n", i);
|
|
WRITE(p, " lightScale = clamp(1.0 / dot(u_lightatt%i, vec3(1.0, distance, distance*distance)), 0.0, 1.0) * (u_lightangle_spotCoef%i.y <= 0.0 ? 1.0 : pow(angle, u_lightangle_spotCoef%i.y));\n", i, i, i);
|
|
WRITE(p, " } else {\n");
|
|
WRITE(p, " lightScale = 0.0;\n");
|
|
WRITE(p, " }\n");
|
|
break;
|
|
default:
|
|
// ILLEGAL
|
|
break;
|
|
}
|
|
|
|
WRITE(p, " diffuse = (u_lightdiffuse%i * %s) * max(ldot, 0.0);\n", i, diffuseStr);
|
|
if (doSpecular) {
|
|
WRITE(p, " if (ldot >= 0.0) {\n");
|
|
WRITE(p, " ldot = dot(normalize(toLight + vec3(0.0, 0.0, 1.0)), worldnormal);\n");
|
|
WRITE(p, " if (u_matspecular.a <= 0.0) {\n");
|
|
WRITE(p, " ldot = 1.0;\n");
|
|
WRITE(p, " } else {\n");
|
|
WRITE(p, " ldot = pow(max(ldot, 0.0), u_matspecular.a);\n");
|
|
WRITE(p, " }\n");
|
|
WRITE(p, " if (ldot > 0.0)\n");
|
|
WRITE(p, " lightSum1 += u_lightspecular%i * %s * ldot %s;\n", i, specularStr, timesLightScale);
|
|
WRITE(p, " }\n");
|
|
}
|
|
WRITE(p, " lightSum0.rgb += (u_lightambient%i * %s.rgb + diffuse)%s;\n", i, ambientStr, timesLightScale);
|
|
}
|
|
|
|
if (enableLighting) {
|
|
// Sum up ambient, emissive here.
|
|
if (lmode) {
|
|
WRITE(p, " Out.v_color0 = clamp(lightSum0, 0.0, 1.0);\n");
|
|
// v_color1 only exists when lmode = 1.
|
|
if (specularIsZero) {
|
|
WRITE(p, " Out.v_color1 = splat3(0.0);\n");
|
|
} else {
|
|
WRITE(p, " Out.v_color1 = clamp(lightSum1, 0.0, 1.0);\n");
|
|
}
|
|
} else {
|
|
if (specularIsZero) {
|
|
WRITE(p, " Out.v_color0 = clamp(lightSum0, 0.0, 1.0);\n");
|
|
} else {
|
|
WRITE(p, " Out.v_color0 = clamp(clamp(lightSum0, 0.0, 1.0) + float4(lightSum1, 0.0), 0.0, 1.0);\n");
|
|
}
|
|
}
|
|
} else {
|
|
// Lighting doesn't affect color.
|
|
if (hasColor) {
|
|
if (doBezier || doSpline)
|
|
WRITE(p, " Out.v_color0 = tess.col;\n");
|
|
else
|
|
WRITE(p, " Out.v_color0 = In.color0;\n");
|
|
} else {
|
|
WRITE(p, " Out.v_color0 = u_matambientalpha;\n");
|
|
}
|
|
if (lmode)
|
|
WRITE(p, " Out.v_color1 = splat3(0.0);\n");
|
|
}
|
|
|
|
// Step 3: UV generation
|
|
if (doTexture) {
|
|
switch (uvGenMode) {
|
|
case GE_TEXMAP_TEXTURE_COORDS: // Scale-offset. Easy.
|
|
case GE_TEXMAP_UNKNOWN: // Not sure what this is, but Riviera uses it. Treating as coords works.
|
|
if (scaleUV) {
|
|
if (hasTexcoord) {
|
|
if (doBezier || doSpline)
|
|
WRITE(p, " Out.v_texcoord = vec3(tess.tex.xy * u_uvscaleoffset.xy + u_uvscaleoffset.zw, 0.0);\n");
|
|
else
|
|
WRITE(p, " Out.v_texcoord = vec3(In.texcoord.xy * u_uvscaleoffset.xy, 0.0);\n");
|
|
} else {
|
|
WRITE(p, " Out.v_texcoord = splat3(0.0);\n");
|
|
}
|
|
} else {
|
|
if (hasTexcoord) {
|
|
WRITE(p, " Out.v_texcoord = vec3(In.texcoord.xy * u_uvscaleoffset.xy + u_uvscaleoffset.zw, 0.0);\n");
|
|
} else {
|
|
WRITE(p, " Out.v_texcoord = vec3(u_uvscaleoffset.zw, 0.0);\n");
|
|
}
|
|
}
|
|
break;
|
|
|
|
case GE_TEXMAP_TEXTURE_MATRIX: // Projection mapping.
|
|
{
|
|
std::string temp_tc;
|
|
switch (uvProjMode) {
|
|
case GE_PROJMAP_POSITION: // Use model space XYZ as source
|
|
temp_tc = "vec4(In.position.xyz, 1.0)";
|
|
break;
|
|
case GE_PROJMAP_UV: // Use unscaled UV as source
|
|
{
|
|
if (hasTexcoord) {
|
|
temp_tc = StringFromFormat("vec4(In.texcoord.xy, 0.0, 1.0)");
|
|
} else {
|
|
temp_tc = "vec4(0.0, 0.0, 0.0, 1.0)";
|
|
}
|
|
}
|
|
break;
|
|
case GE_PROJMAP_NORMALIZED_NORMAL: // Use normalized transformed normal as source
|
|
if (hasNormal)
|
|
temp_tc = flipNormal ? "vec4(normalize(-In.normal), 1.0)" : "vec4(normalize(In.normal), 1.0)";
|
|
else
|
|
temp_tc = "vec4(0.0, 0.0, 1.0, 1.0)";
|
|
break;
|
|
case GE_PROJMAP_NORMAL: // Use non-normalized transformed normal as source
|
|
if (hasNormal)
|
|
temp_tc = flipNormal ? "vec4(-In.normal, 1.0)" : "vec4(In.normal, 1.0)";
|
|
else
|
|
temp_tc = "vec4(0.0, 0.0, 1.0, 1.0)";
|
|
break;
|
|
}
|
|
// Transform by texture matrix. XYZ as we are doing projection mapping.
|
|
WRITE(p, " Out.v_texcoord.xyz = mul(%s, u_texmtx) * vec3(u_uvscaleoffset.xy, 1.0);\n", temp_tc.c_str());
|
|
}
|
|
break;
|
|
|
|
case GE_TEXMAP_ENVIRONMENT_MAP: // Shade mapping - use dots from light sources.
|
|
{
|
|
std::string lightFactor0 = StringFromFormat("(length(u_lightpos%i) == 0.0 ? worldnormal.z : dot(normalize(u_lightpos%i), worldnormal))", ls0, ls0);
|
|
std::string lightFactor1 = StringFromFormat("(length(u_lightpos%i) == 0.0 ? worldnormal.z : dot(normalize(u_lightpos%i), worldnormal))", ls1, ls1);
|
|
WRITE(p, " Out.v_texcoord = vec3(u_uvscaleoffset.xy * vec2(1.0 + %s, 1.0 + %s) * 0.5, 1.0);\n", lightFactor0.c_str(), lightFactor1.c_str());
|
|
}
|
|
break;
|
|
|
|
default:
|
|
// Should be unreachable.
|
|
_assert_(false);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Compute fogdepth
|
|
if (enableFog) {
|
|
WRITE(p, " Out.v_fogdepth = (viewPos.z + u_fogcoef.x) * u_fogcoef.y;\n");
|
|
}
|
|
}
|
|
|
|
if (!isModeThrough && gstate_c.Supports(GPU_SUPPORTS_VS_RANGE_CULLING)) {
|
|
WRITE(p, " vec3 projPos = outPos.xyz / outPos.w;\n");
|
|
// Vertex range culling doesn't happen when depth is clamped, so only do this if in range.
|
|
WRITE(p, " if (u_cullRangeMin.w <= 0.0 || (projPos.z >= u_cullRangeMin.z && projPos.z <= u_cullRangeMax.z)) {\n");
|
|
const char *outMin = "projPos.x < u_cullRangeMin.x || projPos.y < u_cullRangeMin.y || projPos.z < u_cullRangeMin.z";
|
|
const char *outMax = "projPos.x > u_cullRangeMax.x || projPos.y > u_cullRangeMax.y || projPos.z > u_cullRangeMax.z";
|
|
WRITE(p, " if (%s || %s) {\n", outMin, outMax);
|
|
WRITE(p, " outPos.w = u_cullRangeMax.w;\n");
|
|
WRITE(p, " }\n");
|
|
WRITE(p, " }\n");
|
|
}
|
|
WRITE(p, " Out.gl_Position = outPos;\n");
|
|
|
|
WRITE(p, " return Out;\n");
|
|
WRITE(p, "}\n");
|
|
return true;
|
|
}
|