gl_state: Remove depth tracking

src/video_core/renderer_opengl/gl_rasterizer.cpp

@@ -446,12 +446,8 @@ void RasterizerOpenGL::Clear() {
         ASSERT_MSG(regs.zeta_enable != 0, "Tried to clear Z but buffer is not enabled!");
         use_depth = true;
 
-        // Always enable the depth write when clearing the depth buffer. The depth write mask is
-        // ignored when clearing the buffer in the Switch, but OpenGL obeys it so we set it to
-        // true.
-        clear_state.depth.test_enabled = true;
-        clear_state.depth.test_func = GL_ALWAYS;
-        clear_state.depth.write_mask = GL_TRUE;
+        // TODO: Signal state tracker about these changes
+        glDepthMask(GL_TRUE);
     }
     if (regs.clear_buffers.S) {
         ASSERT_MSG(regs.zeta_enable != 0, "Tried to clear stencil but buffer is not enabled!");
@@ -1036,14 +1032,12 @@ void RasterizerOpenGL::SyncPrimitiveRestart() {
 void RasterizerOpenGL::SyncDepthTestState() {
     const auto& regs = system.GPU().Maxwell3D().regs;
 
-    state.depth.test_enabled = regs.depth_test_enable != 0;
-    state.depth.write_mask = regs.depth_write_enabled ? GL_TRUE : GL_FALSE;
+    glDepthMask(regs.depth_write_enabled ? GL_TRUE : GL_FALSE);
 
-    if (!state.depth.test_enabled) {
-        return;
+    oglEnable(GL_DEPTH_TEST, regs.depth_test_enable);
+    if (regs.depth_test_enable) {
+        glDepthFunc(MaxwellToGL::ComparisonOp(regs.depth_test_func));
     }
-
-    state.depth.test_func = MaxwellToGL::ComparisonOp(regs.depth_test_func);
 }
 
 void RasterizerOpenGL::SyncStencilTestState() {

src/video_core/renderer_opengl/gl_state.cpp

@@ -183,20 +183,6 @@ void OpenGLState::ApplyColorMask() {
     }
 }
 
-void OpenGLState::ApplyDepth() {
-    Enable(GL_DEPTH_TEST, cur_state.depth.test_enabled, depth.test_enabled);
-
-    if (cur_state.depth.test_func != depth.test_func) {
-        cur_state.depth.test_func = depth.test_func;
-        glDepthFunc(depth.test_func);
-    }
-
-    if (cur_state.depth.write_mask != depth.write_mask) {
-        cur_state.depth.write_mask = depth.write_mask;
-        glDepthMask(depth.write_mask);
-    }
-}
-
 void OpenGLState::ApplyStencilTest() {
     Enable(GL_STENCIL_TEST, cur_state.stencil.test_enabled, stencil.test_enabled);
 
@@ -380,7 +366,6 @@ void OpenGLState::Apply() {
     ApplyViewport();
     ApplyStencilTest();
     ApplySRgb();
-    ApplyDepth();
     ApplyBlending();
     ApplyTextures();
     ApplySamplers();

src/video_core/renderer_opengl/gl_state.h

@@ -31,12 +31,6 @@ public:
         bool near_plane = false;
     } depth_clamp; // GL_DEPTH_CLAMP
 
-    struct {
-        bool test_enabled = false;      // GL_DEPTH_TEST
-        GLboolean write_mask = GL_TRUE; // GL_DEPTH_WRITEMASK
-        GLenum test_func = GL_LESS;     // GL_DEPTH_FUNC
-    } depth;
-
     bool rasterizer_discard = false; // GL_RASTERIZER_DISCARD
 
     struct ColorMask {
@@ -137,7 +131,6 @@ public:
     void ApplySRgb();
     void ApplyRasterizerDiscard();
     void ApplyColorMask();
-    void ApplyDepth();
     void ApplyStencilTest();
     void ApplyViewport();
     void ApplyTargetBlending(std::size_t target, bool force);

src/video_core/renderer_opengl/renderer_opengl.cpp

@@ -576,6 +576,7 @@ void RendererOpenGL::DrawScreenTriangles(const ScreenInfo& screen_info, float x,
     glEnable(GL_CULL_FACE);
     glDisable(GL_COLOR_LOGIC_OP);
     glDisable(GL_ALPHA_TEST);
+    glDisable(GL_DEPTH_TEST);
     glDisable(GL_POLYGON_OFFSET_FILL);
     glCullFace(GL_BACK);
     glFrontFace(GL_CW);