Merge pull request #789 from bunnei/tex-wrap-border

maxwell_to_gl: Implement Texture::WrapMode::Border.

src/video_core/renderer_opengl/gl_rasterizer.cpp

@@ -601,7 +601,6 @@ void RasterizerOpenGL::SamplerInfo::Create() {
     sampler.Create();
     mag_filter = min_filter = Tegra::Texture::TextureFilter::Linear;
     wrap_u = wrap_v = Tegra::Texture::WrapMode::Wrap;
-    border_color_r = border_color_g = border_color_b = border_color_a = 0;
 
     // default is GL_LINEAR_MIPMAP_LINEAR
     glSamplerParameteri(sampler.handle, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
@@ -630,8 +629,12 @@ void RasterizerOpenGL::SamplerInfo::SyncWithConfig(const Tegra::Texture::TSCEntr
     }
 
     if (wrap_u == Tegra::Texture::WrapMode::Border || wrap_v == Tegra::Texture::WrapMode::Border) {
-        // TODO(Subv): Implement border color
-        ASSERT(false);
+        const GLvec4 new_border_color = {{config.border_color_r, config.border_color_g,
+                                          config.border_color_b, config.border_color_a}};
+        if (border_color != new_border_color) {
+            border_color = new_border_color;
+            glSamplerParameterfv(s, GL_TEXTURE_BORDER_COLOR, border_color.data());
+        }
     }
 }
 

src/video_core/renderer_opengl/gl_rasterizer.h

@@ -77,10 +77,7 @@ private:
         Tegra::Texture::TextureFilter min_filter;
         Tegra::Texture::WrapMode wrap_u;
         Tegra::Texture::WrapMode wrap_v;
-        u32 border_color_r;
-        u32 border_color_g;
-        u32 border_color_b;
-        u32 border_color_a;
+        GLvec4 border_color;
     };
 
     /// Configures the color and depth framebuffer states and returns the dirty <Color, Depth>

src/video_core/renderer_opengl/maxwell_to_gl.h

@@ -112,6 +112,8 @@ inline GLenum WrapMode(Tegra::Texture::WrapMode wrap_mode) {
         return GL_MIRRORED_REPEAT;
     case Tegra::Texture::WrapMode::ClampToEdge:
         return GL_CLAMP_TO_EDGE;
+    case Tegra::Texture::WrapMode::Border:
+        return GL_CLAMP_TO_BORDER;
     case Tegra::Texture::WrapMode::ClampOGL:
         // TODO(Subv): GL_CLAMP was removed as of OpenGL 3.1, to implement GL_CLAMP, we can use
         // GL_CLAMP_TO_BORDER to get the border color of the texture, and then sample the edge to

src/video_core/textures/texture.h

@@ -242,10 +242,10 @@ struct TSCEntry {
         BitField<6, 2, TextureMipmapFilter> mip_filter;
     };
     INSERT_PADDING_BYTES(8);
-    u32 border_color_r;
-    u32 border_color_g;
-    u32 border_color_b;
-    u32 border_color_a;
+    float border_color_r;
+    float border_color_g;
+    float border_color_b;
+    float border_color_a;
 };
 static_assert(sizeof(TSCEntry) == 0x20, "TSCEntry has wrong size");