gl_rasterizer: Implement a VAO cache.

This patch caches VAO objects instead of re-emiting all pointers per draw call.
Configuring this pointers is known as a fast task, but it yields too many GL
calls. So for better performance, just bind the VAO instead of 16 pointers.

1 files changed, 7 insertions, 2 deletions

diff --git a/src/video_core/engines/maxwell_3d.h b/src/video_core/engines/maxwell_3d.h
index 92bfda053..f59d01738 100644
--- a/src/video_core/engines/maxwell_3d.h
+++ b/src/video_core/engines/maxwell_3d.h
@@ -127,6 +127,7 @@ public:
                 BitField<21, 6, Size> size;
                 BitField<27, 3, Type> type;
                 BitField<31, 1, u32> bgra;
+                u32 hex;
             };
 
             u32 ComponentCount() const {
@@ -262,6 +263,10 @@ public:
             bool IsValid() const {
                 return size != Size::Invalid;
             }
+
+            bool operator<(const VertexAttribute& other) const {
+                return hex < other.hex;
+            }
         };
 
         enum class PrimitiveTopology : u32 {
@@ -545,7 +550,7 @@ public:
 
                 INSERT_PADDING_WORDS(0x5B);
 
-                VertexAttribute vertex_attrib_format[NumVertexAttributes];
+                std::array<VertexAttribute, NumVertexAttributes> vertex_attrib_format;
 
                 INSERT_PADDING_WORDS(0xF);
 
@@ -964,7 +969,7 @@ ASSERT_REG_POSITION(stencil_back_func_ref, 0x3D5);
 ASSERT_REG_POSITION(stencil_back_mask, 0x3D6);
 ASSERT_REG_POSITION(stencil_back_func_mask, 0x3D7);
 ASSERT_REG_POSITION(zeta, 0x3F8);
-ASSERT_REG_POSITION(vertex_attrib_format[0], 0x458);
+ASSERT_REG_POSITION(vertex_attrib_format, 0x458);
 ASSERT_REG_POSITION(rt_control, 0x487);
 ASSERT_REG_POSITION(zeta_width, 0x48a);
 ASSERT_REG_POSITION(zeta_height, 0x48b);