gl_device: Enable compute shaders for Intel Mesa drivers

Previously we naively checked for "Intel" in GL_VENDOR, but this
includes both Intel's proprietary driver and the mesa driver. Re-enable
compute shaders for mesa.

src/core/hle/kernel/svc.cpp

@@ -1781,6 +1781,17 @@ static ResultCode SignalToAddress(Core::System& system, VAddr address, u32 type,
     return address_arbiter.SignalToAddress(address, signal_type, value, num_to_wake);
 }
 
+static void KernelDebug([[maybe_unused]] Core::System& system,
+                        [[maybe_unused]] u32 kernel_debug_type, [[maybe_unused]] u64 param1,
+                        [[maybe_unused]] u64 param2, [[maybe_unused]] u64 param3) {
+    // Intentionally do nothing, as this does nothing in released kernel binaries.
+}
+
+static void ChangeKernelTraceState([[maybe_unused]] Core::System& system,
+                                   [[maybe_unused]] u32 trace_state) {
+    // Intentionally do nothing, as this does nothing in released kernel binaries.
+}
+
 /// This returns the total CPU ticks elapsed since the CPU was powered-on
 static u64 GetSystemTick(Core::System& system) {
     LOG_TRACE(Kernel_SVC, "called");
@@ -2418,8 +2429,8 @@ static const FunctionDef SVC_Table[] = {
     {0x39, nullptr, "Unknown"},
     {0x3A, nullptr, "Unknown"},
     {0x3B, nullptr, "Unknown"},
-    {0x3C, nullptr, "DumpInfo"},
-    {0x3D, nullptr, "DumpInfoNew"},
+    {0x3C, SvcWrap<KernelDebug>, "KernelDebug"},
+    {0x3D, SvcWrap<ChangeKernelTraceState>, "ChangeKernelTraceState"},
     {0x3E, nullptr, "Unknown"},
     {0x3F, nullptr, "Unknown"},
     {0x40, nullptr, "CreateSession"},

src/core/hle/kernel/svc_wrap.h

@@ -311,6 +311,17 @@ void SvcWrap(Core::System& system) {
     func(system);
 }
 
+template <void func(Core::System&, u32)>
+void SvcWrap(Core::System& system) {
+    func(system, static_cast<u32>(Param(system, 0)));
+}
+
+template <void func(Core::System&, u32, u64, u64, u64)>
+void SvcWrap(Core::System& system) {
+    func(system, static_cast<u32>(Param(system, 0)), Param(system, 1), Param(system, 2),
+         Param(system, 3));
+}
+
 template <void func(Core::System&, s64)>
 void SvcWrap(Core::System& system) {
     func(system, static_cast<s64>(Param(system, 0)));

src/video_core/engines/maxwell_3d.h

@@ -310,6 +310,11 @@ public:
             }
         };
 
+        enum class DepthMode : u32 {
+            MinusOneToOne = 0,
+            ZeroToOne = 1,
+        };
+
         enum class PrimitiveTopology : u32 {
             Points = 0x0,
             Lines = 0x1,
@@ -491,11 +496,6 @@ public:
             INSERT_UNION_PADDING_WORDS(1);
         };
 
-        enum class DepthMode : u32 {
-            MinusOneToOne = 0,
-            ZeroToOne = 1,
-        };
-
         enum class TessellationPrimitive : u32 {
             Isolines = 0,
             Triangles = 1,
@@ -676,7 +676,7 @@ public:
                     u32 count;
                 } vertex_buffer;
 
-                INSERT_UNION_PADDING_WORDS(1);
+                DepthMode depth_mode;
 
                 float clear_color[4];
                 float clear_depth;
@@ -1425,6 +1425,7 @@ ASSERT_REG_POSITION(rt, 0x200);
 ASSERT_REG_POSITION(viewport_transform, 0x280);
 ASSERT_REG_POSITION(viewports, 0x300);
 ASSERT_REG_POSITION(vertex_buffer, 0x35D);
+ASSERT_REG_POSITION(depth_mode, 0x35F);
 ASSERT_REG_POSITION(clear_color[0], 0x360);
 ASSERT_REG_POSITION(clear_depth, 0x364);
 ASSERT_REG_POSITION(clear_stencil, 0x368);

src/video_core/renderer_opengl/gl_device.cpp

@@ -5,6 +5,7 @@
 #include <algorithm>
 #include <array>
 #include <cstddef>
+#include <cstring>
 #include <optional>
 #include <vector>
 
@@ -134,11 +135,13 @@ std::array<Device::BaseBindings, Tegra::Engines::MaxShaderTypes> BuildBaseBindin
 
 Device::Device() : base_bindings{BuildBaseBindings()} {
     const std::string_view vendor = reinterpret_cast<const char*>(glGetString(GL_VENDOR));
+    const auto renderer = reinterpret_cast<const char*>(glGetString(GL_RENDERER));
     const std::vector extensions = GetExtensions();
 
     const bool is_nvidia = vendor == "NVIDIA Corporation";
     const bool is_amd = vendor == "ATI Technologies Inc.";
     const bool is_intel = vendor == "Intel";
+    const bool is_intel_proprietary = is_intel && std::strstr(renderer, "Mesa") == nullptr;
 
     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);
@@ -152,7 +155,7 @@ Device::Device() : base_bindings{BuildBaseBindings()} {
     has_variable_aoffi = TestVariableAoffi();
     has_component_indexing_bug = is_amd;
     has_precise_bug = TestPreciseBug();
-    has_broken_compute = is_intel;
+    has_broken_compute = is_intel_proprietary;
     has_fast_buffer_sub_data = is_nvidia;
 
     LOG_INFO(Render_OpenGL, "Renderer_VariableAOFFI: {}", has_variable_aoffi);

src/video_core/renderer_opengl/gl_rasterizer.cpp

@@ -1028,6 +1028,10 @@ void RasterizerOpenGL::SyncViewport(OpenGLState& current_state) {
         flip_y = !flip_y;
     }
     state.clip_control.origin = flip_y ? GL_UPPER_LEFT : GL_LOWER_LEFT;
+    state.clip_control.depth_mode =
+        regs.depth_mode == Tegra::Engines::Maxwell3D::Regs::DepthMode::ZeroToOne
+            ? GL_ZERO_TO_ONE
+            : GL_NEGATIVE_ONE_TO_ONE;
 }
 
 void RasterizerOpenGL::SyncClipEnabled(

src/video_core/renderer_opengl/gl_state.cpp

@@ -411,8 +411,9 @@ void OpenGLState::ApplyAlphaTest() {
 }
 
 void OpenGLState::ApplyClipControl() {
-    if (UpdateValue(cur_state.clip_control.origin, clip_control.origin)) {
-        glClipControl(clip_control.origin, GL_NEGATIVE_ONE_TO_ONE);
+    if (UpdateTie(std::tie(cur_state.clip_control.origin, cur_state.clip_control.depth_mode),
+                  std::tie(clip_control.origin, clip_control.depth_mode))) {
+        glClipControl(clip_control.origin, clip_control.depth_mode);
     }
 }
 

src/video_core/renderer_opengl/gl_state.h

@@ -150,6 +150,7 @@ public:
 
     struct {
         GLenum origin = GL_LOWER_LEFT;
+        GLenum depth_mode = GL_NEGATIVE_ONE_TO_ONE;
     } clip_control;
 
     OpenGLState();