vulkan: Avoid redundant commands for dynamic states

src/gpu/vulkan/SDL_gpu_vulkan.c

@@ -7440,6 +7440,7 @@ static void VULKAN_INTERNAL_SetCurrentViewport(
     const SDL_GPUViewport *viewport)
 {
     VulkanCommandBuffer *vulkanCommandBuffer = (VulkanCommandBuffer *)commandBuffer;
+    VulkanRenderer *renderer = (VulkanRenderer *)vulkanCommandBuffer->renderer;
 
     vulkanCommandBuffer->currentViewport.x = viewport->x;
     vulkanCommandBuffer->currentViewport.width = viewport->w;
@@ -7450,6 +7451,12 @@ static void VULKAN_INTERNAL_SetCurrentViewport(
     // FIXME: need moltenVK hack
     vulkanCommandBuffer->currentViewport.y = viewport->y + viewport->h;
     vulkanCommandBuffer->currentViewport.height = -viewport->h;
+
+    renderer->vkCmdSetViewport(
+        vulkanCommandBuffer->commandBuffer,
+        0,
+        1,
+        &vulkanCommandBuffer->currentViewport);
 }
 
 static void VULKAN_SetViewport(
@@ -7457,27 +7464,28 @@ static void VULKAN_SetViewport(
     const SDL_GPUViewport *viewport)
 {
     VulkanCommandBuffer *vulkanCommandBuffer = (VulkanCommandBuffer *)commandBuffer;
-    VulkanRenderer *renderer = (VulkanRenderer *)vulkanCommandBuffer->renderer;
 
     VULKAN_INTERNAL_SetCurrentViewport(
         vulkanCommandBuffer,
         viewport);
-
-    renderer->vkCmdSetViewport(
-        vulkanCommandBuffer->commandBuffer,
-        0,
-        1,
-        &vulkanCommandBuffer->currentViewport);
 }
 
 static void VULKAN_INTERNAL_SetCurrentScissor(
     VulkanCommandBuffer *vulkanCommandBuffer,
     const SDL_Rect *scissor)
 {
+    VulkanRenderer *renderer = (VulkanRenderer *)vulkanCommandBuffer->renderer;
+
     vulkanCommandBuffer->currentScissor.offset.x = scissor->x;
     vulkanCommandBuffer->currentScissor.offset.y = scissor->y;
     vulkanCommandBuffer->currentScissor.extent.width = scissor->w;
     vulkanCommandBuffer->currentScissor.extent.height = scissor->h;
+
+    renderer->vkCmdSetScissor(
+        vulkanCommandBuffer->commandBuffer,
+        0,
+        1,
+        &vulkanCommandBuffer->currentScissor);
 }
 
 static void VULKAN_SetScissor(
@@ -7485,27 +7493,26 @@ static void VULKAN_SetScissor(
     const SDL_Rect *scissor)
 {
     VulkanCommandBuffer *vulkanCommandBuffer = (VulkanCommandBuffer *)commandBuffer;
-    VulkanRenderer *renderer = (VulkanRenderer *)vulkanCommandBuffer->renderer;
 
     VULKAN_INTERNAL_SetCurrentScissor(
         vulkanCommandBuffer,
         scissor);
-
-    renderer->vkCmdSetScissor(
-        vulkanCommandBuffer->commandBuffer,
-        0,
-        1,
-        &vulkanCommandBuffer->currentScissor);
 }
 
 static void VULKAN_INTERNAL_SetCurrentBlendConstants(
     VulkanCommandBuffer *vulkanCommandBuffer,
     SDL_FColor blendConstants)
 {
+    VulkanRenderer *renderer = (VulkanRenderer *)vulkanCommandBuffer->renderer;
+
     vulkanCommandBuffer->blendConstants[0] = blendConstants.r;
     vulkanCommandBuffer->blendConstants[1] = blendConstants.g;
     vulkanCommandBuffer->blendConstants[2] = blendConstants.b;
     vulkanCommandBuffer->blendConstants[3] = blendConstants.a;
+
+    renderer->vkCmdSetBlendConstants(
+        vulkanCommandBuffer->commandBuffer,
+        vulkanCommandBuffer->blendConstants);
 }
 
 static void VULKAN_SetBlendConstants(
@@ -7513,22 +7520,24 @@ static void VULKAN_SetBlendConstants(
     SDL_FColor blendConstants)
 {
     VulkanCommandBuffer *vulkanCommandBuffer = (VulkanCommandBuffer *)commandBuffer;
-    VulkanRenderer *renderer = (VulkanRenderer *)vulkanCommandBuffer->renderer;
 
     VULKAN_INTERNAL_SetCurrentBlendConstants(
         vulkanCommandBuffer,
         blendConstants);
-
-    renderer->vkCmdSetBlendConstants(
-        vulkanCommandBuffer->commandBuffer,
-        vulkanCommandBuffer->blendConstants);
 }
 
 static void VULKAN_INTERNAL_SetCurrentStencilReference(
     VulkanCommandBuffer *vulkanCommandBuffer,
     Uint8 reference)
 {
+    VulkanRenderer *renderer = (VulkanRenderer *)vulkanCommandBuffer->renderer;
+
     vulkanCommandBuffer->stencilRef = reference;
+
+    renderer->vkCmdSetStencilReference(
+        vulkanCommandBuffer->commandBuffer,
+        VK_STENCIL_FACE_FRONT_AND_BACK,
+        vulkanCommandBuffer->stencilRef);
 }
 
 static void VULKAN_SetStencilReference(
@@ -7536,16 +7545,10 @@ static void VULKAN_SetStencilReference(
     Uint8 reference)
 {
     VulkanCommandBuffer *vulkanCommandBuffer = (VulkanCommandBuffer *)commandBuffer;
-    VulkanRenderer *renderer = (VulkanRenderer *)vulkanCommandBuffer->renderer;
 
     VULKAN_INTERNAL_SetCurrentStencilReference(
         vulkanCommandBuffer,
         reference);
-
-    renderer->vkCmdSetStencilReference(
-        vulkanCommandBuffer->commandBuffer,
-        VK_STENCIL_FACE_FRONT_AND_BACK,
-        reference);
 }
 
 static void VULKAN_BindVertexSamplers(
@@ -8058,27 +8061,6 @@ static void VULKAN_BindGraphicsPipeline(
 
     VULKAN_INTERNAL_TrackGraphicsPipeline(vulkanCommandBuffer, pipeline);
 
-    renderer->vkCmdSetViewport(
-        vulkanCommandBuffer->commandBuffer,
-        0,
-        1,
-        &vulkanCommandBuffer->currentViewport);
-
-    renderer->vkCmdSetScissor(
-        vulkanCommandBuffer->commandBuffer,
-        0,
-        1,
-        &vulkanCommandBuffer->currentScissor);
-
-    renderer->vkCmdSetBlendConstants(
-        vulkanCommandBuffer->commandBuffer,
-        vulkanCommandBuffer->blendConstants);
-
-    renderer->vkCmdSetStencilReference(
-        vulkanCommandBuffer->commandBuffer,
-        VK_STENCIL_FACE_FRONT_AND_BACK,
-        vulkanCommandBuffer->stencilRef);
-
     // Acquire uniform buffers if necessary
     for (Uint32 i = 0; i < pipeline->resourceLayout.vertexUniformBufferCount; i += 1) {
         if (vulkanCommandBuffer->vertexUniformBuffers[i] == NULL) {