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GLideN64 soft vertex clipping performance improvement for Adreno GPUs

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This commit is contained in:
fzurita 2021-01-20 22:47:07 -05:00 committed by Sergey Lipskiy
parent e129d66c22
commit 85ad11bbdd
2 changed files with 70 additions and 18 deletions
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67
src/Graphics/OpenGLContext/GLSL/glsl_CombinerProgramBuilder.cpp
View File

@ -255,7 +255,8 @@ public:
ss << "#version " << Utils::to_string(_glinfo.majorVersion) << Utils::to_string(_glinfo.minorVersion) << "0 es " << std::endl;
ss << "# define IN in" << std::endl << "# define OUT out" << std::endl;
if (_glinfo.noPerspective) {
ss << "#extension GL_NV_shader_noperspective_interpolation : enable" << std::endl;
ss << "#extension GL_NV_shader_noperspective_interpolation : enable" << std::endl
<< "noperspective OUT highp float vZCoord;" << std::endl;
}
m_part = ss.str();
}
@ -489,12 +490,16 @@ public:
" gl_ClipDistance[0] = gl_Position.w - gl_Position.z; \n"
;
} else if (config.generalEmulation.enableClipping != 0) {
// Move the near plane towards the camera.
// It helps to avoid issues with near-plane clipping in games, which do not use it.
// Z must be scaled back in fragment shader.
m_part =
" gl_Position.z /= 8.0; \n"
;
if (config.generalEmulation.enableFragmentDepthWrite != 0 && _glinfo.noPerspective) {
m_part = " vZCoord = gl_Position.z / gl_Position.w; \n";
m_part += " gl_Position.z = 0.0; \n";
} else {
// Move the near plane towards the camera.
// It helps to avoid issues with near-plane clipping in games, which do not use it.
// Z must be scaled back in fragment shader.
m_part = " gl_Position.z /= 8.0; \n";
}
}
m_part +=
" gl_Position.zw *= vec2(uClipRatio); \n"
@ -1172,6 +1177,14 @@ public:
"highp float writeDepth();\n";
;
}
if (_glinfo.isGLESX && _glinfo.noPerspective) {
m_part =
"noperspective IN highp float vZCoord; \n"
"uniform lowp float uPolygonOffset; \n"
+ m_part
;
}
}
};
@ -1918,10 +1931,17 @@ public:
"{ \n"
;
if (_glinfo.isGLESX && config.generalEmulation.enableClipping != 0) {
m_part +=
" highp float FragDepth = (uDepthSource != 0) ? uPrimDepth : \n"
" clamp(8.0 * (gl_FragCoord.z * 2.0 - 1.0) * uDepthScale.s + uDepthScale.t, 0.0, 1.0); \n"
;
if (_glinfo.noPerspective) {
m_part +=
" highp float FragDepth = (uDepthSource != 0) ? uPrimDepth : \n"
" clamp((vZCoord - uPolygonOffset) * uDepthScale.s + uDepthScale.t, 0.0, 1.0); \n"
;
} else {
m_part +=
" highp float FragDepth = (uDepthSource != 0) ? uPrimDepth : \n"
" clamp(8.0 * (gl_FragCoord.z * 2.0 - 1.0) * uDepthScale.s + uDepthScale.t, 0.0, 1.0); \n"
;
}
} else {
m_part +=
" highp float FragDepth = (uDepthSource != 0) ? uPrimDepth : \n"
@ -1938,13 +1958,24 @@ public:
;
} else {
if (_glinfo.isGLESX && config.generalEmulation.enableClipping != 0) {
m_part =
"highp float writeDepth() \n"
"{ \n"
" if (uDepthSource != 0) return uPrimDepth; \n"
" return clamp(8.0 * (gl_FragCoord.z * 2.0 - 1.0) * uDepthScale.s + uDepthScale.t, 0.0, 1.0); \n"
"} \n"
;
if (_glinfo.noPerspective) {
m_part =
"highp float writeDepth() \n"
"{ \n"
" if (uDepthSource != 0) return uPrimDepth; \n"
" return clamp((vZCoord - uPolygonOffset) * uDepthScale.s + uDepthScale.t, 0.0, 1.0); \n"
"} \n"
;
} else {
m_part =
"highp float writeDepth() \n"
"{ \n"
" if (uDepthSource != 0) return uPrimDepth; \n"
" return clamp(8.0 * (gl_FragCoord.z * 2.0 - 1.0) * uDepthScale.s + uDepthScale.t, 0.0, 1.0); \n"
"} \n"
;
}
} else {
m_part =
"highp float writeDepth() \n"

21
src/Graphics/OpenGLContext/GLSL/glsl_CombinerProgramUniformFactory.cpp
View File

@ -725,6 +725,23 @@ private:
fUniform uClipRatio;
};
class UPolygonOffset : public UniformGroup
{
public:
UPolygonOffset(GLuint _program) {
LocateUniform(uPolygonOffset);
}
void update(bool _force) override
{
f32 offset = gfxContext.isEnabled(graphics::enable::POLYGON_OFFSET_FILL) ? 0.003f : 0.0f;
uPolygonOffset.set(offset, _force);
}
private:
fUniform uPolygonOffset;
};
class UScreenCoordsScale : public UniformGroup
{
public:
@ -1114,6 +1131,10 @@ void CombinerProgramUniformFactory::buildUniforms(GLuint _program,
config.frameBufferEmulation.N64DepthCompare != Config::dcDisable)
_uniforms.emplace_back(new URenderTarget(_program));
if (m_glInfo.isGLESX && m_glInfo.noPerspective) {
_uniforms.emplace_back(new UPolygonOffset(_program));
}
_uniforms.emplace_back(new UClipRatio(_program));
_uniforms.emplace_back(new UScreenCoordsScale(_program));