OpenGL: Remove redundant texture.enable_2d field from OpenGLState

All uses of this field where it's false can just set the texture id to 0
instead.

src/video_core/renderer_opengl/gl_rasterizer.cpp

@@ -99,7 +99,6 @@ void RasterizerOpenGL::InitObjects() {
     fb_color_texture.texture.Create();
     ReconfigureColorTexture(fb_color_texture, Pica::Regs::ColorFormat::RGBA8, 1, 1);
 
-    state.texture_units[0].enabled_2d = true;
     state.texture_units[0].texture_2d = fb_color_texture.texture.handle;
     state.Apply();
 
@@ -115,7 +114,6 @@ void RasterizerOpenGL::InitObjects() {
     fb_depth_texture.texture.Create();
     ReconfigureDepthTexture(fb_depth_texture, Pica::Regs::DepthFormat::D16, 1, 1);
 
-    state.texture_units[0].enabled_2d = true;
     state.texture_units[0].texture_2d = fb_depth_texture.texture.handle;
     state.Apply();
 
@@ -493,7 +491,6 @@ void RasterizerOpenGL::ReconfigureColorTexture(TextureInfo& texture, Pica::Regs:
         break;
     }
 
-    state.texture_units[0].enabled_2d = true;
     state.texture_units[0].texture_2d = texture.texture.handle;
     state.Apply();
 
@@ -537,7 +534,6 @@ void RasterizerOpenGL::ReconfigureDepthTexture(DepthTextureInfo& texture, Pica::
         break;
     }
 
-    state.texture_units[0].enabled_2d = true;
     state.texture_units[0].texture_2d = texture.texture.handle;
     state.Apply();
 
@@ -766,10 +762,9 @@ void RasterizerOpenGL::SyncDrawState() {
         const auto& texture = pica_textures[texture_index];
 
         if (texture.enabled) {
-            state.texture_units[texture_index].enabled_2d = true;
             res_cache.LoadAndBindTexture(state, texture_index, texture);
         } else {
-            state.texture_units[texture_index].enabled_2d = false;
+            state.texture_units[texture_index].texture_2d = 0;
         }
     }
 
@@ -804,7 +799,6 @@ void RasterizerOpenGL::ReloadColorBuffer() {
         }
     }
 
-    state.texture_units[0].enabled_2d = true;
     state.texture_units[0].texture_2d = fb_color_texture.texture.handle;
     state.Apply();
 
@@ -862,7 +856,6 @@ void RasterizerOpenGL::ReloadDepthBuffer() {
         }
     }
 
-    state.texture_units[0].enabled_2d = true;
     state.texture_units[0].texture_2d = fb_depth_texture.texture.handle;
     state.Apply();
 
@@ -887,7 +880,6 @@ void RasterizerOpenGL::CommitColorBuffer() {
 
             std::unique_ptr<u8[]> temp_gl_color_buffer(new u8[fb_color_texture.width * fb_color_texture.height * bytes_per_pixel]);
 
-            state.texture_units[0].enabled_2d = true;
             state.texture_units[0].texture_2d = fb_color_texture.texture.handle;
             state.Apply();
 
@@ -927,7 +919,6 @@ void RasterizerOpenGL::CommitDepthBuffer() {
 
             std::unique_ptr<u8[]> temp_gl_depth_buffer(new u8[fb_depth_texture.width * fb_depth_texture.height * gl_bpp]);
 
-            state.texture_units[0].enabled_2d = true;
             state.texture_units[0].texture_2d = fb_depth_texture.texture.handle;
             state.Apply();
 

src/video_core/renderer_opengl/gl_state.cpp

@@ -40,7 +40,6 @@ OpenGLState::OpenGLState() {
     logic_op = GL_COPY;
 
     for (auto& texture_unit : texture_units) {
-        texture_unit.enabled_2d = false;
         texture_unit.texture_2d = 0;
     }
 
@@ -147,16 +146,9 @@ void OpenGLState::Apply() {
 
     // Textures
     for (unsigned texture_index = 0; texture_index < ARRAY_SIZE(texture_units); ++texture_index) {
-        if (texture_units[texture_index].enabled_2d != cur_state.texture_units[texture_index].enabled_2d ||
-            texture_units[texture_index].texture_2d != cur_state.texture_units[texture_index].texture_2d) {
-
+        if (texture_units[texture_index].texture_2d != cur_state.texture_units[texture_index].texture_2d) {
             glActiveTexture(GL_TEXTURE0 + texture_index);
-
-            if (texture_units[texture_index].enabled_2d) {
-                glBindTexture(GL_TEXTURE_2D, texture_units[texture_index].texture_2d);
-            } else {
-                glBindTexture(GL_TEXTURE_2D, 0);
-            }
+            glBindTexture(GL_TEXTURE_2D, texture_units[texture_index].texture_2d);
         }
     }
 

src/video_core/renderer_opengl/gl_state.h

@@ -53,7 +53,6 @@ public:
 
     // 3 texture units - one for each that is used in PICA fragment shader emulation
     struct {
-        bool enabled_2d; // GL_TEXTURE_2D
         GLuint texture_2d; // GL_TEXTURE_BINDING_2D
     } texture_units[3];
 

src/video_core/renderer_opengl/renderer_opengl.cpp

@@ -163,7 +163,6 @@ void RendererOpenGL::LoadFBToActiveGLTexture(const GPU::Regs::FramebufferConfig&
     // only allows rows to have a memory alignement of 4.
     ASSERT(pixel_stride % 4 == 0);
 
-    state.texture_units[0].enabled_2d = true;
     state.texture_units[0].texture_2d = texture.handle;
     state.Apply();
 
@@ -191,7 +190,6 @@ void RendererOpenGL::LoadFBToActiveGLTexture(const GPU::Regs::FramebufferConfig&
  */
 void RendererOpenGL::LoadColorToActiveGLTexture(u8 color_r, u8 color_g, u8 color_b,
                                                 const TextureInfo& texture) {
-    state.texture_units[0].enabled_2d = true;
     state.texture_units[0].texture_2d = texture.handle;
     state.Apply();
 
@@ -239,7 +237,6 @@ void RendererOpenGL::InitOpenGLObjects() {
         // Allocation of storage is deferred until the first frame, when we
         // know the framebuffer size.
 
-        state.texture_units[0].enabled_2d = true;
         state.texture_units[0].texture_2d = texture.handle;
         state.Apply();
 
@@ -305,7 +302,6 @@ void RendererOpenGL::ConfigureFramebufferTexture(TextureInfo& texture,
         UNIMPLEMENTED();
     }
 
-    state.texture_units[0].enabled_2d = true;
     state.texture_units[0].texture_2d = texture.handle;
     state.Apply();
 
@@ -325,7 +321,6 @@ void RendererOpenGL::DrawSingleScreenRotated(const TextureInfo& texture, float x
         ScreenRectVertex(x+w, y+h, 0.f, 1.f),
     };
 
-    state.texture_units[0].enabled_2d = true;
     state.texture_units[0].texture_2d = texture.handle;
     state.Apply();