1 files changed, 59 insertions, 15 deletions

diff --git a/src/video_core/renderer_opengl/gl_device.cpp b/src/video_core/renderer_opengl/gl_device.cpp
index 65a88b06c..64de7e425 100644
--- a/src/video_core/renderer_opengl/gl_device.cpp
+++ b/src/video_core/renderer_opengl/gl_device.cpp
@@ -2,8 +2,10 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include <algorithm>
 #include <array>
 #include <cstddef>
+#include <vector>
 #include <glad/glad.h>
 
 #include "common/logging/log.h"
@@ -14,51 +16,84 @@
 namespace OpenGL {
 
 namespace {
+
 template <typename T>
 T GetInteger(GLenum pname) {
     GLint temporary;
     glGetIntegerv(pname, &temporary);
     return static_cast<T>(temporary);
 }
+
+bool TestProgram(const GLchar* glsl) {
+    const GLuint shader{glCreateShaderProgramv(GL_VERTEX_SHADER, 1, &glsl)};
+    GLint link_status;
+    glGetProgramiv(shader, GL_LINK_STATUS, &link_status);
+    glDeleteProgram(shader);
+    return link_status == GL_TRUE;
+}
+
+std::vector<std::string_view> GetExtensions() {
+    GLint num_extensions;
+    glGetIntegerv(GL_NUM_EXTENSIONS, &num_extensions);
+    std::vector<std::string_view> extensions;
+    extensions.reserve(num_extensions);
+    for (GLint index = 0; index < num_extensions; ++index) {
+        extensions.push_back(
+            reinterpret_cast<const char*>(glGetStringi(GL_EXTENSIONS, static_cast<GLuint>(index))));
+    }
+    return extensions;
+}
+
+bool HasExtension(const std::vector<std::string_view>& images, std::string_view extension) {
+    return std::find(images.begin(), images.end(), extension) != images.end();
+}
+
 } // Anonymous namespace
 
 Device::Device() {
+    const std::vector extensions = GetExtensions();
+
     uniform_buffer_alignment = GetInteger<std::size_t>(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT);
+    shader_storage_alignment = GetInteger<std::size_t>(GL_SHADER_STORAGE_BUFFER_OFFSET_ALIGNMENT);
     max_vertex_attributes = GetInteger<u32>(GL_MAX_VERTEX_ATTRIBS);
     max_varyings = GetInteger<u32>(GL_MAX_VARYING_VECTORS);
+    has_warp_intrinsics = GLAD_GL_NV_gpu_shader5 && GLAD_GL_NV_shader_thread_group &&
+                          GLAD_GL_NV_shader_thread_shuffle;
+    has_vertex_viewport_layer = GLAD_GL_ARB_shader_viewport_layer_array;
+    has_image_load_formatted = HasExtension(extensions, "GL_EXT_shader_image_load_formatted");
     has_variable_aoffi = TestVariableAoffi();
     has_component_indexing_bug = TestComponentIndexingBug();
+    has_precise_bug = TestPreciseBug();
+
+    LOG_INFO(Render_OpenGL, "Renderer_VariableAOFFI: {}", has_variable_aoffi);
+    LOG_INFO(Render_OpenGL, "Renderer_ComponentIndexingBug: {}", has_component_indexing_bug);
+    LOG_INFO(Render_OpenGL, "Renderer_PreciseBug: {}", has_precise_bug);
 }
 
 Device::Device(std::nullptr_t) {
     uniform_buffer_alignment = 0;
     max_vertex_attributes = 16;
     max_varyings = 15;
+    has_warp_intrinsics = true;
+    has_vertex_viewport_layer = true;
+    has_image_load_formatted = true;
     has_variable_aoffi = true;
     has_component_indexing_bug = false;
+    has_precise_bug = false;
 }
 
 bool Device::TestVariableAoffi() {
-    const GLchar* AOFFI_TEST = R"(#version 430 core
+    return TestProgram(R"(#version 430 core
 // This is a unit test, please ignore me on apitrace bug reports.
 uniform sampler2D tex;
 uniform ivec2 variable_offset;
+out vec4 output_attribute;
 void main() {
-    gl_Position = textureOffset(tex, vec2(0), variable_offset);
-}
-)";
-    const GLuint shader{glCreateShaderProgramv(GL_VERTEX_SHADER, 1, &AOFFI_TEST)};
-    GLint link_status{};
-    glGetProgramiv(shader, GL_LINK_STATUS, &link_status);
-    glDeleteProgram(shader);
-
-    const bool supported{link_status == GL_TRUE};
-    LOG_INFO(Render_OpenGL, "Renderer_VariableAOFFI: {}", supported);
-    return supported;
+    output_attribute = textureOffset(tex, vec2(0), variable_offset);
+})");
 }
 
 bool Device::TestComponentIndexingBug() {
-    constexpr char log_message[] = "Renderer_ComponentIndexingBug: {}";
     const GLchar* COMPONENT_TEST = R"(#version 430 core
 layout (std430, binding = 0) buffer OutputBuffer {
     uint output_value;
@@ -98,12 +133,21 @@ void main() {
         GLuint result;
         glGetNamedBufferSubData(ssbo.handle, 0, sizeof(result), &result);
         if (result != values.at(index)) {
-            LOG_INFO(Render_OpenGL, log_message, true);
             return true;
         }
     }
-    LOG_INFO(Render_OpenGL, log_message, false);
     return false;
 }
 
+bool Device::TestPreciseBug() {
+    return !TestProgram(R"(#version 430 core
+in vec3 coords;
+out float out_value;
+uniform sampler2DShadow tex;
+void main() {
+    precise float tmp_value = vec4(texture(tex, coords)).x;
+    out_value = tmp_value;
+})");
+}
+
 } // namespace OpenGL