From 73d9c494ea6ae0a8076f679506ff07e2fe014826 Mon Sep 17 00:00:00 2001
From: bunnei <bunneidev@gmail.com>
Date: Sun, 15 Apr 2018 03:32:12 -0400
Subject: shaders: Expose hints about used const buffers.

---
 src/video_core/renderer_opengl/gl_shader_gen.cpp | 54 +++++++++++++++++++++---
 1 file changed, 48 insertions(+), 6 deletions(-)

(limited to 'src/video_core/renderer_opengl/gl_shader_gen.cpp')

diff --git a/src/video_core/renderer_opengl/gl_shader_gen.cpp b/src/video_core/renderer_opengl/gl_shader_gen.cpp
index 524c2cfb5..aeea1c805 100644
--- a/src/video_core/renderer_opengl/gl_shader_gen.cpp
+++ b/src/video_core/renderer_opengl/gl_shader_gen.cpp
@@ -3,18 +3,60 @@
 // Refer to the license.txt file included.
 
 #include "common/assert.h"
+#include "video_core/engines/maxwell_3d.h"
+#include "video_core/renderer_opengl/gl_shader_decompiler.h"
 #include "video_core/renderer_opengl/gl_shader_gen.h"
 
 namespace GLShader {
 
-std::string GenerateVertexShader(const ShaderSetup& setup, const MaxwellVSConfig& config) {
-    UNREACHABLE();
-    return {};
+using Tegra::Engines::Maxwell3D;
+
+static constexpr u32 PROGRAM_OFFSET{10};
+
+ProgramResult GenerateVertexShader(const ShaderSetup& setup, const MaxwellVSConfig& config) {
+    std::string out = "#version 430 core\n";
+    out += "#extension GL_ARB_separate_shader_objects : enable\n\n";
+    out += Decompiler::GetCommonDeclarations();
+
+    ProgramResult program = Decompiler::DecompileProgram(setup.program_code, PROGRAM_OFFSET,
+                                                         Maxwell3D::Regs::ShaderStage::Vertex)
+                                .get_value_or({});
+    out += R"(
+
+out gl_PerVertex {
+    vec4 gl_Position;
+};
+
+void main() {
+    exec_shader();
+}
+
+)";
+    out += program.first;
+    return {out, program.second};
+}
+
+ProgramResult GenerateFragmentShader(const ShaderSetup& setup, const MaxwellFSConfig& config) {
+    std::string out = "#version 430 core\n";
+    out += "#extension GL_ARB_separate_shader_objects : enable\n\n";
+    out += Decompiler::GetCommonDeclarations();
+
+    ProgramResult program = Decompiler::DecompileProgram(setup.program_code, PROGRAM_OFFSET,
+                                                         Maxwell3D::Regs::ShaderStage::Fragment)
+                                .get_value_or({});
+    out += R"(
+
+out vec4 color;
+
+uniform sampler2D tex[32];
+
+void main() {
+    exec_shader();
 }
 
-std::string GenerateFragmentShader(const ShaderSetup& setup, const MaxwellFSConfig& config) {
-    UNREACHABLE();
-    return {};
+)";
+    out += program.first;
+    return {out, program.second};
 }
 
 } // namespace GLShader
-- 
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