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glsl: Address rest of feedback

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This commit is contained in:
ameerj 2021-06-15 17:23:57 -04:00
parent c5dfa0b630
commit d36f667bc0
11 changed files with 86 additions and 38 deletions
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44
src/shader_recompiler/backend/glsl/emit_context.cpp
View file

@ -148,6 +148,16 @@ std::string_view ImageFormatString(ImageFormat format) {
}
}
std::string_view ImageAccessQualifier(bool is_written, bool is_read) {
if (is_written && !is_read) {
return "writeonly ";
}
if (is_read && !is_written) {
return "readonly ";
}
return "";
}
std::string_view GetTessMode(TessPrimitive primitive) {
switch (primitive) {
case TessPrimitive::Triangles:
@ -262,7 +272,9 @@ void SetupLegacyInPerFragment(EmitContext& ctx, std::string& header) {
EmitContext::EmitContext(IR::Program& program, Bindings& bindings, const Profile& profile_,
const RuntimeInfo& runtime_info_)
: info{program.info}, profile{profile_}, runtime_info{runtime_info_} {
header += "#pragma optionNV(fastmath off)\n";
if (profile.need_fastmath_off) {
header += "#pragma optionNV(fastmath off)\n";
}
SetupExtensions();
stage = program.stage;
switch (program.stage) {
@ -335,7 +347,7 @@ EmitContext::EmitContext(IR::Program& program, Bindings& bindings, const Profile
}
for (size_t index = 0; index < info.stores_generics.size(); ++index) {
// TODO: Properly resolve attribute issues
if (info.stores_generics[index] || stage == Stage::VertexA || stage == Stage::VertexB) {
if (info.stores_generics[index] || StageInitializesVaryings()) {
DefineGenericOutput(index, program.invocations);
}
}
@ -347,6 +359,17 @@ EmitContext::EmitContext(IR::Program& program, Bindings& bindings, const Profile
DefineConstants();
}
bool EmitContext::StageInitializesVaryings() const noexcept {
switch (stage) {
case Stage::VertexA:
case Stage::VertexB:
case Stage::Geometry:
return true;
default:
return false;
}
}
void EmitContext::SetupExtensions() {
if (info.uses_shadow_lod && profile.support_gl_texture_shadow_lod) {
header += "#extension GL_EXT_texture_shadow_lod : enable\n";
@ -361,7 +384,7 @@ void EmitContext::SetupExtensions() {
header += "#extension GL_NV_shader_atomic_float : enable\n";
}
if (info.uses_atomic_f16x2_add || info.uses_atomic_f16x2_min || info.uses_atomic_f16x2_max) {
header += "#extension NV_shader_atomic_fp16_vector : enable\n";
header += "#extension GL_NV_shader_atomic_fp16_vector : enable\n";
}
if (info.uses_fp16) {
if (profile.support_gl_nv_gpu_shader_5) {
@ -392,7 +415,7 @@ void EmitContext::SetupExtensions() {
if (info.stores_viewport_mask && profile.support_viewport_mask) {
header += "#extension GL_NV_viewport_array2 : enable\n";
}
if (info.uses_typeless_image_reads || info.uses_typeless_image_writes) {
if (info.uses_typeless_image_reads) {
header += "#extension GL_EXT_shader_image_load_formatted : enable\n";
}
if (info.uses_derivatives && profile.support_gl_derivative_control) {
@ -593,9 +616,9 @@ std::string EmitContext::DefineGlobalMemoryFunctions() {
"return uvec4({0}[uint(addr-{1})>>2],{0}[uint(addr-{1}+4)>>2],{0}["
"uint(addr-{1}+8)>>2],{0}[uint(addr-{1}+12)>>2]);}}");
}
write_func += "}";
write_func_64 += "}";
write_func_128 += "}";
write_func += '}';
write_func_64 += '}';
write_func_128 += '}';
load_func += "return 0u;}";
load_func_64 += "return uvec2(0);}";
load_func_128 += "return uvec4(0);}";
@ -607,9 +630,10 @@ void EmitContext::SetupImages(Bindings& bindings) {
for (const auto& desc : info.image_buffer_descriptors) {
image_buffers.push_back({bindings.image, desc.count});
const auto format{ImageFormatString(desc.format)};
const auto qualifier{ImageAccessQualifier(desc.is_written, desc.is_read)};
const auto array_decorator{desc.count > 1 ? fmt::format("[{}]", desc.count) : ""};
header += fmt::format("layout(binding={}{}) uniform uimageBuffer img{}{};", bindings.image,
format, bindings.image, array_decorator);
header += fmt::format("layout(binding={}{}) uniform {}uimageBuffer img{}{};",
bindings.image, format, qualifier, bindings.image, array_decorator);
bindings.image += desc.count;
}
images.reserve(info.image_descriptors.size());
@ -617,7 +641,7 @@ void EmitContext::SetupImages(Bindings& bindings) {
images.push_back({bindings.image, desc.count});
const auto format{ImageFormatString(desc.format)};
const auto image_type{ImageType(desc.type)};
const auto qualifier{desc.is_written ? "" : "readonly "};
const auto qualifier{ImageAccessQualifier(desc.is_written, desc.is_read)};
const auto array_decorator{desc.count > 1 ? fmt::format("[{}]", desc.count) : ""};
header += fmt::format("layout(binding={}{})uniform {}{} img{}{};", bindings.image, format,
qualifier, image_type, bindings.image, array_decorator);

2
src/shader_recompiler/backend/glsl/emit_context.h
View file

@ -136,6 +136,8 @@ public:
code += '\n';
}
[[nodiscard]] bool StageInitializesVaryings() const noexcept;
std::string header;
std::string code;
VarAlloc var_alloc;

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

@ -329,7 +329,7 @@ void EmitSetAttribute(EmitContext& ctx, IR::Attribute attr, std::string_view val
ctx.Add("gl_BackSecondaryColor.{}={};", swizzle, value);
break;
case IR::Attribute::FogCoordinate:
ctx.Add("gl_FogFragCoord.x={};", value);
ctx.Add("gl_FogFragCoord={};", value);
break;
case IR::Attribute::ClipDistance0:
case IR::Attribute::ClipDistance1:

22
src/shader_recompiler/backend/glsl/emit_glsl_special.cpp
View file

@ -10,6 +10,17 @@
#include "shader_recompiler/frontend/ir/value.h"
namespace Shader::Backend::GLSL {
namespace {
void InitializeVaryings(EmitContext& ctx) {
ctx.Add("gl_Position=vec4(0,0,0,1);");
// TODO: Properly resolve attribute issues
for (size_t index = 0; index < ctx.info.stores_generics.size() / 2; ++index) {
if (!ctx.info.stores_generics[index]) {
ctx.Add("out_attr{}=vec4(0,0,0,1);", index);
}
}
}
} // Anonymous namespace
void EmitPhi(EmitContext& ctx, IR::Inst& phi) {
const size_t num_args{phi.NumArgs()};
@ -44,14 +55,8 @@ void EmitPhiMove(EmitContext& ctx, const IR::Value& phi_value, const IR::Value&
}
void EmitPrologue(EmitContext& ctx) {
if (ctx.stage == Stage::VertexA || ctx.stage == Stage::VertexB) {
ctx.Add("gl_Position=vec4(0.0f, 0.0f, 0.0f, 1.0f);");
// TODO: Properly resolve attribute issues
for (size_t index = 0; index < ctx.info.stores_generics.size() / 2; ++index) {
if (!ctx.info.stores_generics[index]) {
ctx.Add("out_attr{}=vec4(0,0,0,1);", index);
}
}
if (ctx.StageInitializesVaryings()) {
InitializeVaryings(ctx);
}
}
@ -59,6 +64,7 @@ void EmitEpilogue(EmitContext&) {}
void EmitEmitVertex(EmitContext& ctx, const IR::Value& stream) {
ctx.Add("EmitStreamVertex(int({}));", ctx.var_alloc.Consume(stream));
InitializeVaryings(ctx);
}
void EmitEndPrimitive(EmitContext& ctx, const IR::Value& stream) {