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shader: Rework varyings and implement passthrough geometry shaders

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Put all varyings into a single std::bitset with helpers to access it.

Implement passthrough geometry shaders using host's.
This commit is contained in:
ReinUsesLisp 2021-06-24 02:41:09 -03:00 • committed by ameerj
parent 4f052a1f39
commit 7dafa96ab5
29 changed files with 351 additions and 337 deletions
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58
src/shader_recompiler/backend/glsl/emit_context.cpp
View file

@ -212,22 +212,22 @@ std::string_view OutputPrimitive(OutputTopology topology) {
}
void SetupLegacyOutPerVertex(EmitContext& ctx, std::string& header) {
if (!ctx.info.stores_legacy_varyings) {
if (!ctx.info.stores.Legacy()) {
return;
}
if (ctx.info.stores_fixed_fnc_textures) {
if (ctx.info.stores.FixedFunctionTexture()) {
header += "vec4 gl_TexCoord[8];";
}
if (ctx.info.stores_color_front_diffuse) {
if (ctx.info.stores.AnyComponent(IR::Attribute::ColorFrontDiffuseR)) {
header += "vec4 gl_FrontColor;";
}
if (ctx.info.stores_color_front_specular) {
if (ctx.info.stores.AnyComponent(IR::Attribute::ColorFrontSpecularR)) {
header += "vec4 gl_FrontSecondaryColor;";
}
if (ctx.info.stores_color_back_diffuse) {
if (ctx.info.stores.AnyComponent(IR::Attribute::ColorBackDiffuseR)) {
header += "vec4 gl_BackColor;";
}
if (ctx.info.stores_color_back_specular) {
if (ctx.info.stores.AnyComponent(IR::Attribute::ColorBackSpecularR)) {
header += "vec4 gl_BackSecondaryColor;";
}
}
@ -237,32 +237,32 @@ void SetupOutPerVertex(EmitContext& ctx, std::string& header) {
return;
}
header += "out gl_PerVertex{vec4 gl_Position;";
if (ctx.info.stores_point_size) {
if (ctx.info.stores[IR::Attribute::PointSize]) {
header += "float gl_PointSize;";
}
if (ctx.info.stores_clip_distance) {
if (ctx.info.stores.ClipDistances()) {
header += "float gl_ClipDistance[];";
}
if (ctx.info.stores_viewport_index && ctx.profile.support_viewport_index_layer_non_geometry &&
ctx.stage != Stage::Geometry) {
if (ctx.info.stores[IR::Attribute::ViewportIndex] &&
ctx.profile.support_viewport_index_layer_non_geometry && ctx.stage != Stage::Geometry) {
header += "int gl_ViewportIndex;";
}
SetupLegacyOutPerVertex(ctx, header);
header += "};";
if (ctx.info.stores_viewport_index && ctx.stage == Stage::Geometry) {
if (ctx.info.stores[IR::Attribute::ViewportIndex] && ctx.stage == Stage::Geometry) {
header += "out int gl_ViewportIndex;";
}
}
void SetupLegacyInPerFragment(EmitContext& ctx, std::string& header) {
if (!ctx.info.loads_legacy_varyings) {
if (!ctx.info.loads.Legacy()) {
return;
}
header += "in gl_PerFragment{";
if (ctx.info.loads_fixed_fnc_textures) {
if (ctx.info.loads.FixedFunctionTexture()) {
header += "vec4 gl_TexCoord[8];";
}
if (ctx.info.loads_color_front_diffuse) {
if (ctx.info.loads.AnyComponent(IR::Attribute::ColorFrontDiffuseR)) {
header += "vec4 gl_Color;";
}
header += "};";
@ -325,14 +325,13 @@ EmitContext::EmitContext(IR::Program& program, Bindings& bindings, const Profile
SetupOutPerVertex(*this, header);
SetupLegacyInPerFragment(*this, header);
for (size_t index = 0; index < info.input_generics.size(); ++index) {
const auto& generic{info.input_generics[index]};
if (!generic.used || !runtime_info.previous_stage_stores_generic[index]) {
for (size_t index = 0; index < IR::NUM_GENERICS; ++index) {
if (!info.loads.Generic(index) || !runtime_info.previous_stage_stores.Generic(index)) {
continue;
}
header +=
fmt::format("layout(location={}){}in vec4 in_attr{}{};", index,
InterpDecorator(generic.interpolation), index, InputArrayDecorator(stage));
header += fmt::format("layout(location={}){}in vec4 in_attr{}{};", index,
InterpDecorator(info.interpolation[index]), index,
InputArrayDecorator(stage));
}
for (size_t index = 0; index < info.uses_patches.size(); ++index) {
if (!info.uses_patches[index]) {
@ -349,11 +348,10 @@ EmitContext::EmitContext(IR::Program& program, Bindings& bindings, const Profile
header += fmt::format("layout(location={})out vec4 frag_color{};", index, index);
}
}
for (size_t index = 0; index < info.stores_generics.size(); ++index) {
if (!info.stores_generics[index]) {
continue;
for (size_t index = 0; index < IR::NUM_GENERICS; ++index) {
if (info.stores.Generic(index)) {
DefineGenericOutput(index, program.invocations);
}
DefineGenericOutput(index, program.invocations);
}
DefineConstantBuffers(bindings);
DefineStorageBuffers(bindings);
@ -398,14 +396,14 @@ void EmitContext::SetupExtensions() {
header += "#extension GL_NV_shader_thread_shuffle : enable\n";
}
}
if ((info.stores_viewport_index || info.stores_layer) &&
if ((info.stores[IR::Attribute::ViewportIndex] || info.stores[IR::Attribute::Layer]) &&
profile.support_viewport_index_layer_non_geometry && stage != Stage::Geometry) {
header += "#extension GL_ARB_shader_viewport_layer_array : enable\n";
}
if (info.uses_sparse_residency && profile.support_gl_sparse_textures) {
header += "#extension GL_ARB_sparse_texture2 : enable\n";
}
if (info.stores_viewport_mask && profile.support_viewport_mask) {
if (info.stores[IR::Attribute::ViewportMask] && profile.support_viewport_mask) {
header += "#extension GL_NV_viewport_array2 : enable\n";
}
if (info.uses_typeless_image_reads) {
@ -535,20 +533,20 @@ void EmitContext::DefineHelperFunctions() {
fmt::format("float IndexedAttrLoad(int offset{}){{int base_index=offset>>2;uint "
"masked_index=uint(base_index)&3u;switch(base_index>>2){{",
vertex_arg)};
if (info.loads_position) {
if (info.loads.AnyComponent(IR::Attribute::PositionX)) {
const auto position_idx{is_array ? "gl_in[vertex]." : ""};
func += fmt::format("case {}:return {}{}[masked_index];",
static_cast<u32>(IR::Attribute::PositionX) >> 2, position_idx,
position_name);
}
const u32 base_attribute_value = static_cast<u32>(IR::Attribute::Generic0X) >> 2;
for (u32 i = 0; i < info.input_generics.size(); ++i) {
if (!info.input_generics[i].used) {
for (u32 index = 0; index < IR::NUM_GENERICS; ++index) {
if (!info.loads.Generic(index)) {
continue;
}
const auto vertex_idx{is_array ? "[vertex]" : ""};
func += fmt::format("case {}:return in_attr{}{}[masked_index];",
base_attribute_value + i, i, vertex_idx);
base_attribute_value + index, index, vertex_idx);
}
func += "default: return 0.0;}}";
header += func;

2
src/shader_recompiler/backend/glsl/emit_glsl.cpp
View file

@ -171,7 +171,7 @@ void EmitCode(EmitContext& ctx, const IR::Program& program) {
}
std::string GlslVersionSpecifier(const EmitContext& ctx) {
if (ctx.uses_y_direction || ctx.info.stores_legacy_varyings || ctx.info.loads_legacy_varyings) {
if (ctx.uses_y_direction || ctx.info.stores.Legacy() || ctx.info.loads.Legacy()) {
return " compatibility";
}
return "";

2
src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp
View file

@ -179,7 +179,7 @@ void EmitGetAttribute(EmitContext& ctx, IR::Inst& inst, IR::Attribute attr,
const char swizzle{"xyzw"[element]};
if (IR::IsGeneric(attr)) {
const u32 index{IR::GenericAttributeIndex(attr)};
if (!ctx.runtime_info.previous_stage_stores_generic[index]) {
if (!ctx.runtime_info.previous_stage_stores.Generic(index)) {
ctx.AddF32("{}=0.f;", inst, attr);
return;
}

4
src/shader_recompiler/backend/glsl/emit_glsl_special.cpp
View file

@ -20,8 +20,8 @@ void InitializeOutputVaryings(EmitContext& ctx) {
if (ctx.stage == Stage::VertexB || ctx.stage == Stage::Geometry) {
ctx.Add("gl_Position=vec4(0,0,0,1);");
}
for (size_t index = 0; index < ctx.info.stores_generics.size(); ++index) {
if (!ctx.info.stores_generics[index]) {
for (size_t index = 0; index < IR::NUM_GENERICS; ++index) {
if (!ctx.info.stores.Generic(index)) {
continue;
}
const auto& info_array{ctx.output_generics.at(index)};