Merge pull request #1535 from ReinUsesLisp/fixup-position

gl_shader_decompiler: Move position varying declaration back to gl_shader_gen

src/video_core/renderer_opengl/gl_shader_decompiler.cpp

@@ -30,8 +30,6 @@ using Tegra::Shader::SubOp;
 constexpr u32 PROGRAM_END = MAX_PROGRAM_CODE_LENGTH;
 constexpr u32 PROGRAM_HEADER_SIZE = sizeof(Tegra::Shader::Header);
 
-enum : u32 { POSITION_VARYING_LOCATION = 0, GENERIC_VARYING_START_LOCATION = 1 };
-
 constexpr u32 MAX_GEOMETRY_BUFFERS = 6;
 constexpr u32 MAX_ATTRIBUTES = 0x100; // Size in vec4s, this value is untested
 
@@ -591,13 +589,6 @@ private:
 
     /// Generates declarations for input attributes.
     void GenerateInputAttrs() {
-        if (stage != Maxwell3D::Regs::ShaderStage::Vertex) {
-            const std::string attr =
-                stage == Maxwell3D::Regs::ShaderStage::Geometry ? "gs_position[]" : "position";
-            declarations.AddLine("layout (location = " + std::to_string(POSITION_VARYING_LOCATION) +
-                                 ") in vec4 " + attr + ';');
-        }
-
         for (const auto element : declr_input_attribute) {
             // TODO(bunnei): Use proper number of elements for these
             u32 idx =
@@ -620,10 +611,6 @@ private:
 
     /// Generates declarations for output attributes.
     void GenerateOutputAttrs() {
-        if (stage != Maxwell3D::Regs::ShaderStage::Fragment) {
-            declarations.AddLine("layout (location = " + std::to_string(POSITION_VARYING_LOCATION) +
-                                 ") out vec4 position;");
-        }
         for (const auto& index : declr_output_attribute) {
             // TODO(bunnei): Use proper number of elements for these
             const u32 idx = static_cast<u32>(index) -

src/video_core/renderer_opengl/gl_shader_gen.cpp

@@ -23,6 +23,8 @@ out gl_PerVertex {
     vec4 gl_Position;
 };
 
+layout (location = 0) out vec4 position;
+
 layout(std140) uniform vs_config {
     vec4 viewport_flip;
     uvec4 instance_id;
@@ -96,6 +98,9 @@ out gl_PerVertex {
     vec4 gl_Position;
 };
 
+layout (location = 0) in vec4 gs_position[];
+layout (location = 0) out vec4 position;
+
 layout (std140) uniform gs_config {
     vec4 viewport_flip;
     uvec4 instance_id;
@@ -131,6 +136,8 @@ layout(location = 5) out vec4 FragColor5;
 layout(location = 6) out vec4 FragColor6;
 layout(location = 7) out vec4 FragColor7;
 
+layout (location = 0) in vec4 position;
+
 layout (std140) uniform fs_config {
     vec4 viewport_flip;
     uvec4 instance_id;

src/video_core/renderer_opengl/gl_shader_gen.h

@@ -16,6 +16,8 @@ namespace OpenGL::GLShader {
 constexpr std::size_t MAX_PROGRAM_CODE_LENGTH{0x1000};
 using ProgramCode = std::vector<u64>;
 
+enum : u32 { POSITION_VARYING_LOCATION = 0, GENERIC_VARYING_START_LOCATION = 1 };
+
 class ConstBufferEntry {
     using Maxwell = Tegra::Engines::Maxwell3D::Regs;