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GLES: Implement logic ops via fb fetch (#608)

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* GLES: Implement logic ops via fb fetch

* Attempt to fix deprecated libglx-mesa0 package

* Update Qt_Build.yml

* GLES: Enable fb fetch instead of requiring it

* GLES: Add support for GL_ARM_shader_framebuffer_fetch

* Fix GL_EXT_shader_framebuffer_fetch behavior
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wheremyfoodat 2024-10-13 21:17:24 +00:00 • committed by GitHub
parent 5eb628eb5f
commit fa9ce5fc70
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12 changed files with 111 additions and 12 deletions
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5
include/PICA/pica_frag_config.hpp
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@ -17,6 +17,7 @@ namespace PICA {
// enable == off means a CompareFunction of Always
BitField<0, 3, CompareFunction> alphaTestFunction;
BitField<3, 1, u32> depthMapEnable;
BitField<4, 4, LogicOpMode> logicOpMode;
};
};
@ -214,6 +215,10 @@ namespace PICA {
(alphaTestConfig & 1) ? static_cast<PICA::CompareFunction>(alphaTestFunction) : PICA::CompareFunction::Always;
outConfig.depthMapEnable = regs[InternalRegs::DepthmapEnable] & 1;
// Shows if blending is enabled. If it is not enabled, then logic ops are enabled instead
const bool blendingEnabled = (regs[InternalRegs::ColourOperation] & (1 << 8)) != 0;
outConfig.logicOpMode = blendingEnabled ? LogicOpMode::Copy : LogicOpMode(Helpers::getBits<0, 4>(regs[InternalRegs::LogicOp]));
texConfig.texUnitConfig = regs[InternalRegs::TexUnitCfg];
texConfig.texEnvUpdateBuffer = regs[InternalRegs::TexEnvUpdateBuffer];

19
include/PICA/regs.hpp
View file

@ -396,6 +396,25 @@ namespace PICA {
GreaterOrEqual = 7,
};
enum class LogicOpMode : u32 {
Clear = 0,
And = 1,
ReverseAnd = 2,
Copy = 3,
Set = 4,
InvertedCopy = 5,
Nop = 6,
Invert = 7,
Nand = 8,
Or = 9,
Nor = 10,
Xor = 11,
Equiv = 12,
InvertedAnd = 13,
ReverseOr = 14,
InvertedOr = 15,
};
enum class FogMode : u32 {
Disabled = 0,
Fog = 5,

3
include/PICA/shader_gen.hpp
View file

@ -25,10 +25,11 @@ namespace PICA::ShaderGen {
bool isSamplerEnabled(u32 environmentID, u32 lutID);
void compileFog(std::string& shader, const PICA::FragmentConfig& config);
void compileLogicOps(std::string& shader, const PICA::FragmentConfig& config);
public:
FragmentGenerator(API api, Language language) : api(api), language(language) {}
std::string generate(const PICA::FragmentConfig& config);
std::string generate(const PICA::FragmentConfig& config, void* driverInfo = nullptr);
std::string getDefaultVertexShader();
void setTarget(API api, Language language) {