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https://github.com/yuzu-emu/yuzu.git
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glsl: Add passthrough geometry shader support
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parent
8612b5fec5
commit
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@ -236,6 +236,9 @@ void SetupOutPerVertex(EmitContext& ctx, std::string& header) {
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if (!StoresPerVertexAttributes(ctx.stage)) {
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return;
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}
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if (ctx.uses_geometry_passthrough) {
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return;
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}
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header += "out gl_PerVertex{vec4 gl_Position;";
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if (ctx.info.stores[IR::Attribute::PointSize]) {
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header += "float gl_PointSize;";
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@ -272,12 +275,13 @@ void SetupLegacyInPerFragment(EmitContext& ctx, std::string& header) {
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EmitContext::EmitContext(IR::Program& program, Bindings& bindings, const Profile& profile_,
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const RuntimeInfo& runtime_info_)
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: info{program.info}, profile{profile_}, runtime_info{runtime_info_} {
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: info{program.info}, profile{profile_}, runtime_info{runtime_info_}, stage{program.stage},
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uses_geometry_passthrough{program.is_geometry_passthrough &&
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profile.support_geometry_shader_passthrough} {
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if (profile.need_fastmath_off) {
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header += "#pragma optionNV(fastmath off)\n";
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}
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SetupExtensions();
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stage = program.stage;
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switch (program.stage) {
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case Stage::VertexA:
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case Stage::VertexB:
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@ -295,10 +299,17 @@ EmitContext::EmitContext(IR::Program& program, Bindings& bindings, const Profile
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break;
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case Stage::Geometry:
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stage_name = "gs";
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header += fmt::format("layout({})in;layout({},max_vertices={})out;"
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"in gl_PerVertex{{vec4 gl_Position;}}gl_in[];",
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InputPrimitive(runtime_info.input_topology),
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OutputPrimitive(program.output_topology), program.output_vertices);
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header += fmt::format("layout({})in;", InputPrimitive(runtime_info.input_topology));
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if (uses_geometry_passthrough) {
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header += "layout(passthrough)in gl_PerVertex{vec4 gl_Position;};";
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break;
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} else if (program.is_geometry_passthrough &&
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!profile.support_geometry_shader_passthrough) {
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LOG_WARNING(Shader_GLSL, "Passthrough geometry program used but not supported");
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}
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header += fmt::format(
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"layout({},max_vertices={})out;in gl_PerVertex{{vec4 gl_Position;}}gl_in[];",
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OutputPrimitive(program.output_topology), program.output_vertices);
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break;
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case Stage::Fragment:
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stage_name = "fs";
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@ -329,7 +340,9 @@ EmitContext::EmitContext(IR::Program& program, Bindings& bindings, const Profile
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if (!info.loads.Generic(index) || !runtime_info.previous_stage_stores.Generic(index)) {
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continue;
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}
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header += fmt::format("layout(location={}){}in vec4 in_attr{}{};", index,
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const auto qualifier{uses_geometry_passthrough ? "passthrough"
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: fmt::format("location={}", index)};
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header += fmt::format("layout({}){}in vec4 in_attr{}{};", qualifier,
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InterpDecorator(info.interpolation[index]), index,
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InputArrayDecorator(stage));
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}
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@ -412,6 +425,9 @@ void EmitContext::SetupExtensions() {
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if (info.uses_derivatives && profile.support_gl_derivative_control) {
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header += "#extension GL_ARB_derivative_control : enable\n";
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}
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if (uses_geometry_passthrough) {
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header += "#extension GL_NV_geometry_shader_passthrough : enable\n";
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}
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}
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void EmitContext::DefineConstantBuffers(Bindings& bindings) {
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@ -157,6 +157,7 @@ public:
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bool uses_y_direction{};
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bool uses_cc_carry{};
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bool uses_geometry_passthrough{};
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private:
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void SetupExtensions();
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@ -17,6 +17,9 @@ std::string_view OutputVertexIndex(EmitContext& ctx) {
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}
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void InitializeOutputVaryings(EmitContext& ctx) {
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if (ctx.uses_geometry_passthrough) {
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return;
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}
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if (ctx.stage == Stage::VertexB || ctx.stage == Stage::Geometry) {
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ctx.Add("gl_Position=vec4(0,0,0,1);");
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}
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