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vk_shader_gen_spv: Emulate logic ops

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GPUCode
2023-01-08 13:02:23 +02:00
parent 5abfdff66a
commit a12748d79e
2 changed files with 29 additions and 3 deletions
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3
src/video_core/renderer_vulkan/vk_instance.h
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@ -87,7 +87,8 @@ public:
/// Returns true if logic operations need shader emulation
bool NeedsLogicOpEmulation() const {
return !features.logicOp;
return true;
//return !features.logicOp;
}
bool UseGeometryShaders() const {

29
src/video_core/renderer_vulkan/vk_shader_gen_spv.cpp
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@ -4,7 +4,6 @@
#include "common/microprofile.h"
#include "core/core.h"
#include "video_core/regs.h"
#include "video_core/renderer_vulkan/vk_shader_gen_spv.h"
#include "video_core/shader/shader_uniforms.h"
@ -75,8 +74,34 @@ void FragmentModule::Generate() {
// do our own transformation according to PICA specification.
WriteDepth();
Id color{Byteround(last_tex_env_out, 4)};
if (config.state.emulate_logic_op) {
switch (config.state.logic_op) {
case FramebufferRegs::LogicOp::Clear:
color = ConstF32(0.f, 0.f, 0.f, 0.f);
break;
case FramebufferRegs::LogicOp::Set:
color = ConstF32(1.f, 1.f, 1.f, 1.f);
break;
case FramebufferRegs::LogicOp::Copy:
// Take the color output as-is
break;
case FramebufferRegs::LogicOp::CopyInverted:
//out += "color = ~color;\n";
break;
case FramebufferRegs::LogicOp::NoOp:
// We need to discard the color, but not necessarily the depth. This is not possible
// with fragment shader alone, so we emulate this behavior with the color mask.
break;
default:
LOG_CRITICAL(HW_GPU, "Unhandled logic_op {:x}",
static_cast<u32>(config.state.logic_op.Value()));
UNIMPLEMENTED();
}
}
// Write output color
OpStore(color_id, Byteround(last_tex_env_out, 4));
OpStore(color_id, color);
OpReturn();
OpFunctionEnd();
}