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shader: Implement geometry shaders

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This commit is contained in:
ReinUsesLisp 2021-04-12 19:41:22 -03:00 • committed by ameerj
parent a6cef71cc0
commit f263760c5a
14 changed files with 277 additions and 91 deletions
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42
src/shader_recompiler/backend/spirv/emit_spirv_special.cpp
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@ -5,6 +5,17 @@
#include "shader_recompiler/backend/spirv/emit_spirv.h"
namespace Shader::Backend::SPIRV {
namespace {
void ConvertDepthMode(EmitContext& ctx) {
const Id type{ctx.F32[1]};
const Id position{ctx.OpLoad(ctx.F32[4], ctx.output_position)};
const Id z{ctx.OpCompositeExtract(type, position, 2u)};
const Id w{ctx.OpCompositeExtract(type, position, 3u)};
const Id screen_depth{ctx.OpFMul(type, ctx.OpFAdd(type, z, w), ctx.Constant(type, 0.5f))};
const Id vector{ctx.OpCompositeInsert(ctx.F32[4], screen_depth, position, 2u)};
ctx.OpStore(ctx.output_position, vector);
}
} // Anonymous namespace
void EmitPrologue(EmitContext& ctx) {
if (ctx.stage == Stage::VertexB) {
@ -25,23 +36,30 @@ void EmitPrologue(EmitContext& ctx) {
}
void EmitEpilogue(EmitContext& ctx) {
if (ctx.profile.convert_depth_mode) {
const Id type{ctx.F32[1]};
const Id position{ctx.OpLoad(ctx.F32[4], ctx.output_position)};
const Id z{ctx.OpCompositeExtract(type, position, 2u)};
const Id w{ctx.OpCompositeExtract(type, position, 3u)};
const Id screen_depth{ctx.OpFMul(type, ctx.OpFAdd(type, z, w), ctx.Constant(type, 0.5f))};
const Id vector{ctx.OpCompositeInsert(ctx.F32[4], screen_depth, position, 2u)};
ctx.OpStore(ctx.output_position, vector);
if (ctx.stage == Stage::VertexB && ctx.profile.convert_depth_mode) {
ConvertDepthMode(ctx);
}
}
void EmitEmitVertex(EmitContext& ctx, Id stream) {
ctx.OpEmitStreamVertex(stream);
void EmitEmitVertex(EmitContext& ctx, const IR::Value& stream) {
if (ctx.profile.convert_depth_mode) {
ConvertDepthMode(ctx);
}
if (!stream.IsImmediate()) {
// LOG_WARNING(..., "EmitVertex's stream is not constant");
ctx.OpEmitStreamVertex(ctx.u32_zero_value);
return;
}
ctx.OpEmitStreamVertex(ctx.Def(stream));
}
void EmitEndPrimitive(EmitContext& ctx, Id stream) {
ctx.OpEndStreamPrimitive(stream);
void EmitEndPrimitive(EmitContext& ctx, const IR::Value& stream) {
if (!stream.IsImmediate()) {
// LOG_WARNING(..., "EndPrimitive's stream is not constant");
ctx.OpEndStreamPrimitive(ctx.u32_zero_value);
return;
}
ctx.OpEndStreamPrimitive(ctx.Def(stream));
}
} // namespace Shader::Backend::SPIRV