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Compute coverage value

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S2S 2020-12-14 22:50:15 +01:00 committed by Sergey Lipskiy
parent 486cf59614
commit fdf3bc4f21
2 changed files with 34 additions and 1 deletions
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34
src/Graphics/OpenGLContext/GLSL/glsl_CombinerProgramBuilder.cpp
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@ -941,6 +941,7 @@ public:
"highp vec2 tcData1[5]; \n"
"uniform lowp int uCvgDest; \n"
"uniform lowp int uBlendAlphaMode; \n"
"lowp float mcvg;"
;
if (config.generalEmulation.enableLegacyBlending != 0) {
@ -1058,7 +1059,7 @@ public:
"uniform lowp int uScreenSpaceTriangle; \n"
"uniform lowp int uCvgDest; \n"
"uniform lowp int uBlendAlphaMode; \n"
"lowp float mcvg; \n"
;
if (config.generalEmulation.enableLegacyBlending != 0) {
@ -2581,6 +2582,28 @@ public:
}
};
class ShaderCoverage : public ShaderPart {
public:
ShaderCoverage() {
m_part =
"const highp vec2 bias[8] = vec2[8] (vec2(-0.5,-0.5), vec2(0.0, -0.5), vec2(-0.25,-0.25), vec2(-0.25, 0.25), \n"
" vec2(-0.5, 0.0), vec2(0.0,0.0), vec2(-0.25,0.25), vec2(0.25,0.25)); \n"
"highp vec4 dBCdx = dFdx(vBaryCoords); \n"
"highp vec4 dBCdy = dFdy(vBaryCoords); \n"
"highp vec2 deltaBC0 = vec2(dBCdx[0], dBCdy[0]); \n"
"highp vec2 deltaBC1 = vec2(dBCdx[1], dBCdy[1]); \n"
"highp vec2 deltaBC2 = vec2(dBCdx[2], dBCdy[2]); \n"
"highp vec2 deltaBC3 = vec2(dBCdx[3], dBCdy[3]); \n"
"mcvg = 0.0; \n"
"for (int i = 0; i<8; i++) { \n"
" mcvg += 0.125 * step(0.0, vBaryCoords[0] + dot(deltaBC0, bias[i])) * step(0.0, vBaryCoords[1] + dot(deltaBC1, bias[i])) "
" * step(0.0, vBaryCoords[2] + dot(deltaBC2, bias[i])) * step(0.0, vBaryCoords[3] + dot(deltaBC3, bias[i])); \n"
"} \n"
;
}
};
/*---------------ShaderPartsEnd-------------*/
static
@ -2780,9 +2803,17 @@ graphics::CombinerProgram * CombinerProgramBuilder::buildCombinerProgram(Combine
else
m_fragmentMain->write(ssShader);
if (g_cycleType <= G_CYC_2CYCLE)
m_fragmentBlendMux->write(ssShader);
if (g_cycleType <= G_CYC_2CYCLE)
m_shaderCoverage->write(ssShader);
else
ssShader << "mcvg = 1.0f; \n" << std::endl;
if (bUseTextures) {
if (combinerInputs.usesTile(0))
{
@ -2970,6 +3001,7 @@ CombinerProgramBuilder::CombinerProgramBuilder(const opengl::GLInfo & _glinfo, o
, m_shaderN64DepthCompare(new ShaderN64DepthCompare(_glinfo))
, m_shaderN64DepthRender(new ShaderN64DepthRender(_glinfo))
, m_shaderTextureEngine(new ShaderTextureEngine(_glinfo))
, m_shaderCoverage(new ShaderCoverage())
, m_useProgram(_useProgram)
, m_combinerOptionsBits(graphics::CombinerProgram::getShaderCombinerOptionsBits())
{

1
src/Graphics/OpenGLContext/GLSL/glsl_CombinerProgramBuilder.h
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@ -92,6 +92,7 @@ namespace glsl {
ShaderPartPtr m_shaderN64DepthCompare;
ShaderPartPtr m_shaderN64DepthRender;
ShaderPartPtr m_shaderTextureEngine;
ShaderPartPtr m_shaderCoverage;
std::unique_ptr<CombinerProgramUniformFactory> m_uniformFactory;