maxwell_3d: Unify draw methods

Pass instanced state of a draw invocation as an argument instead of
having two separate virtual methods.

src/video_core/engines/maxwell_3d.cpp

@@ -482,7 +482,7 @@ void Maxwell3D::FlushMMEInlineDraw() {
 
     const bool is_indexed = mme_draw.current_mode == MMEDrawMode::Indexed;
     if (ShouldExecute()) {
-        rasterizer.DrawMultiBatch(is_indexed);
+        rasterizer.Draw(is_indexed, true);
     }
 
     // TODO(bunnei): Below, we reset vertex count so that we can use these registers to determine if
@@ -647,7 +647,7 @@ void Maxwell3D::DrawArrays() {
 
     const bool is_indexed{regs.index_array.count && !regs.vertex_buffer.count};
     if (ShouldExecute()) {
-        rasterizer.DrawBatch(is_indexed);
+        rasterizer.Draw(is_indexed, false);
     }
 
     // TODO(bunnei): Below, we reset vertex count so that we can use these registers to determine if

src/video_core/rasterizer_interface.h

@@ -29,11 +29,8 @@ class RasterizerInterface {
 public:
     virtual ~RasterizerInterface() {}
 
-    /// Draw the current batch of vertex arrays
-    virtual bool DrawBatch(bool is_indexed) = 0;
-
-    /// Draw the current batch of multiple instances of vertex arrays
-    virtual bool DrawMultiBatch(bool is_indexed) = 0;
+    /// Dispatches a draw invocation
+    virtual void Draw(bool is_indexed, bool is_instanced) = 0;
 
     /// Clear the current framebuffer
     virtual void Clear() = 0;

src/video_core/renderer_opengl/gl_rasterizer.cpp

@@ -657,16 +657,6 @@ void RasterizerOpenGL::Draw(bool is_indexed, bool is_instanced) {
     }
 }
 
-bool RasterizerOpenGL::DrawBatch(bool is_indexed) {
-    Draw(is_indexed, false);
-    return true;
-}
-
-bool RasterizerOpenGL::DrawMultiBatch(bool is_indexed) {
-    Draw(is_indexed, true);
-    return true;
-}
-
 void RasterizerOpenGL::DispatchCompute(GPUVAddr code_addr) {
     if (device.HasBrokenCompute()) {
         return;

src/video_core/renderer_opengl/gl_rasterizer.h

@@ -57,8 +57,7 @@ public:
                               ScreenInfo& info);
     ~RasterizerOpenGL() override;
 
-    bool DrawBatch(bool is_indexed) override;
-    bool DrawMultiBatch(bool is_indexed) override;
+    void Draw(bool is_indexed, bool is_instanced) override;
     void Clear() override;
     void DispatchCompute(GPUVAddr code_addr) override;
     void FlushAll() override;
@@ -102,9 +101,6 @@ private:
     void SetupGlobalMemory(u32 binding, const GLShader::GlobalMemoryEntry& entry, GPUVAddr gpu_addr,
                            std::size_t size);
 
-    /// Syncs all the state, shaders, render targets and textures setting before a draw call.
-    void Draw(bool is_indexed, bool is_instanced);
-
     /// Configures the current textures to use for the draw command.
     void SetupDrawTextures(std::size_t stage_index, const Shader& shader);
 

src/video_core/renderer_vulkan/vk_rasterizer.cpp

@@ -293,16 +293,6 @@ RasterizerVulkan::RasterizerVulkan(Core::System& system, Core::Frontend::EmuWind
 
 RasterizerVulkan::~RasterizerVulkan() = default;
 
-bool RasterizerVulkan::DrawBatch(bool is_indexed) {
-    Draw(is_indexed, false);
-    return true;
-}
-
-bool RasterizerVulkan::DrawMultiBatch(bool is_indexed) {
-    Draw(is_indexed, true);
-    return true;
-}
-
 void RasterizerVulkan::Draw(bool is_indexed, bool is_instanced) {
     MICROPROFILE_SCOPE(Vulkan_Drawing);
 

src/video_core/renderer_vulkan/vk_rasterizer.h

@@ -104,8 +104,7 @@ public:
                               VKScheduler& scheduler);
     ~RasterizerVulkan() override;
 
-    bool DrawBatch(bool is_indexed) override;
-    bool DrawMultiBatch(bool is_indexed) override;
+    void Draw(bool is_indexed, bool is_instanced) override;
     void Clear() override;
     void DispatchCompute(GPUVAddr code_addr) override;
     void FlushAll() override;
@@ -140,8 +139,6 @@ private:
 
     static constexpr std::size_t ZETA_TEXCEPTION_INDEX = 8;
 
-    void Draw(bool is_indexed, bool is_instanced);
-
     void FlushWork();
 
     Texceptions UpdateAttachments();