video_core: Implement maxwell3d draw texture method

src/video_core/engines/draw_manager.h

@@ -32,6 +32,19 @@ public:
         std::vector<u8> inline_index_draw_indexes;
     };
 
+    struct DrawTextureState {
+        f32 dst_x0;
+        f32 dst_y0;
+        f32 dst_x1;
+        f32 dst_y1;
+        f32 src_x0;
+        f32 src_y0;
+        f32 src_x1;
+        f32 src_y1;
+        u32 src_sampler;
+        u32 src_texture;
+    };
+
     struct IndirectParams {
         bool is_indexed;
         bool include_count;
@@ -64,6 +77,10 @@ public:
         return draw_state;
     }
 
+    const DrawTextureState& GetDrawTextureState() const {
+        return draw_texture_state;
+    }
+
     IndirectParams& GetIndirectParams() {
         return indirect_state;
     }
@@ -81,6 +98,8 @@ private:
 
     void DrawIndexSmall(u32 argument);
 
+    void DrawTexture();
+
     void UpdateTopology();
 
     void ProcessDraw(bool draw_indexed, u32 instance_count);
@@ -89,6 +108,7 @@ private:
 
     Maxwell3D* maxwell3d{};
     State draw_state{};
+    DrawTextureState draw_texture_state{};
     IndirectParams indirect_state{};
 };
 } // namespace Tegra::Engines