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Added Alpha Func

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This commit is contained in:
FernandoS27 2018-10-10 09:20:13 -04:00
parent aa620c14af
commit 7b39107e3a
2 changed files with 43 additions and 3 deletions
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10
src/video_core/renderer_opengl/gl_rasterizer.cpp
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@ -885,10 +885,18 @@ u32 RasterizerOpenGL::SetupTextures(Maxwell::ShaderStage stage, Shader& shader,
void RasterizerOpenGL::SetupAlphaTesting(Shader& shader) {
const auto& regs = Core::System::GetInstance().GPU().Maxwell3D().regs;
glProgramUniform1i(shader->GetProgramHandle(), shader->GetAlphaTestingEnableLocation(),
glProgramUniform1ui(shader->GetProgramHandle(), shader->GetAlphaTestingEnableLocation(),
regs.alpha_test_enabled);
glProgramUniform1f(shader->GetProgramHandle(), shader->GetAlphaTestingRefLocation(),
regs.alpha_test_ref);
u32 func = static_cast<u32>(regs.alpha_test_func);
// Normalize the gl variants of opCompare to be the same as the normal variants
if (func >= 0x200) {
func = func - 0x200 + 1U;
}
glProgramUniform1ui(shader->GetProgramHandle(), shader->GetAlphaTestingFuncLocation(), func);
}
void RasterizerOpenGL::SyncViewport() {

36
src/video_core/renderer_opengl/gl_shader_decompiler.cpp
View file

@ -1280,13 +1280,13 @@ private:
header.ps.IsColorComponentOutputEnabled(render_target, 1) ||
header.ps.IsColorComponentOutputEnabled(render_target, 2) ||
header.ps.IsColorComponentOutputEnabled(render_target, 3)) {
shader.AddLine(fmt::format("if ({} < alpha_testing_ref) discard;",
shader.AddLine(fmt::format("if (AlphaFunc({}, alpha_testing_ref, alpha_testing_func)) discard;",
regs.GetRegisterAsFloat(current_reg)));
current_reg += 4;
}
}
--shader.scope;
shader.AddLine("}");
shader.AddLine('}');
// Write the color outputs using the data in the shader registers, disabled
// rendertargets/components are skipped in the register assignment.
@ -3505,6 +3505,38 @@ private:
declarations.AddLine("bool " + pred + " = false;");
}
declarations.AddNewLine();
GenerateFunctionDeclarations();
}
void GenerateFunctionDeclarations() {
if (stage == Maxwell3D::Regs::ShaderStage::Fragment) {
declarations.AddLine("bool AlphaFunc(in float value, in float ref, in uint func) {");
declarations.scope++;
declarations.AddLine("switch (func) {");
declarations.scope++;
declarations.AddLine("case 1:");
declarations.AddLine("return false;");
declarations.AddLine("case 2:");
declarations.AddLine("return value < ref;");
declarations.AddLine("case 3:");
declarations.AddLine("return value == ref;");
declarations.AddLine("case 4:");
declarations.AddLine("return value <= ref;");
declarations.AddLine("case 5:");
declarations.AddLine("return value > ref;");
declarations.AddLine("case 6:");
declarations.AddLine("return value != ref;");
declarations.AddLine("case 7:");
declarations.AddLine("return value >= ref;");
declarations.AddLine("case 8:");
declarations.AddLine("return true;");
declarations.AddLine("default:");
declarations.AddLine("return false;");
declarations.scope--;
declarations.AddLine('}');
declarations.scope--;
declarations.AddLine('}');
}
}
private: