Render Pass API Streamlining (#14)

Removes `Refresh_RenderPass` and `Refresh_Framebuffer` objects.

`Refresh_BeginRenderPass` now takes a set of `Refresh_ColorAttachmentInfo` structs and an optional `Refresh_DepthStencilAttachmentInfo` struct that describe the render pass. The render pass and framebuffer objects are now managed by the implementation instead of the application.

Accordingly, `Refresh_GraphicsPipelineCreateInfo` now takes a `Refresh_GraphicsPipelineAttachmentInfo` struct that describes render passes that may be used with the pipeline. It is an error to bind a pipeline during an incompatible render pass.

Reviewed-on: MoonsideGames/Refresh#14
Co-authored-by: cosmonaut <evan@moonside.games>
Co-committed-by: cosmonaut <evan@moonside.games>

include/Refresh.h

@@ -59,9 +59,7 @@ typedef struct Refresh_Buffer Refresh_Buffer;
 typedef struct Refresh_Texture Refresh_Texture;
 typedef struct Refresh_Sampler Refresh_Sampler;
 typedef struct Refresh_RenderTarget Refresh_RenderTarget;
-typedef struct Refresh_Framebuffer Refresh_Framebuffer;
 typedef struct Refresh_ShaderModule Refresh_ShaderModule;
-typedef struct Refresh_RenderPass Refresh_RenderPass;
 typedef struct Refresh_ComputePipeline Refresh_ComputePipeline;
 typedef struct Refresh_GraphicsPipeline Refresh_GraphicsPipeline;
 typedef struct Refresh_CommandBuffer Refresh_CommandBuffer;
@@ -473,30 +471,6 @@ typedef struct Refresh_GraphicsPipelineLayoutCreateInfo
 	uint32_t fragmentSamplerBindingCount;
 } Refresh_GraphicsPipelineLayoutCreateInfo;
 
-typedef struct Refresh_ColorTargetDescription
-{
-	Refresh_TextureFormat format;
-	Refresh_SampleCount multisampleCount;
-	Refresh_LoadOp loadOp;
-	Refresh_StoreOp storeOp;
-} Refresh_ColorTargetDescription;
-
-typedef struct Refresh_DepthStencilTargetDescription
-{
-	Refresh_TextureFormat depthStencilFormat;
-	Refresh_LoadOp loadOp;
-	Refresh_StoreOp storeOp;
-	Refresh_LoadOp stencilLoadOp;
-	Refresh_StoreOp stencilStoreOp;
-} Refresh_DepthStencilTargetDescription;
-
-typedef struct Refresh_RenderPassCreateInfo
-{
-	const Refresh_ColorTargetDescription *colorTargetDescriptions;
-	uint32_t colorTargetCount;
-	const Refresh_DepthStencilTargetDescription *depthTargetDescription; /* can be NULL */
-} Refresh_RenderPassCreateInfo;
-
 typedef struct Refresh_ShaderModuleCreateInfo
 {
 	size_t codeSize;
@@ -579,6 +553,20 @@ typedef struct Refresh_ComputePipelineCreateInfo
 	Refresh_ComputePipelineLayoutCreateInfo pipelineLayoutCreateInfo;
 } Refresh_ComputePipelineCreateInfo;
 
+typedef struct Refresh_ColorAttachmentDescription
+{
+	Refresh_TextureFormat format;
+	Refresh_SampleCount sampleCount;
+} Refresh_ColorAttachmentDescription;
+
+typedef struct Refresh_GraphicsPipelineAttachmentInfo
+{
+	Refresh_ColorAttachmentDescription colorAttachmentDescriptions[4];
+	uint32_t colorAttachmentCount;
+	uint8_t hasDepthStencilAttachment;
+	Refresh_TextureFormat depthStencilFormat;
+} Refresh_GraphicsPipelineAttachmentInfo;
+
 typedef struct Refresh_GraphicsPipelineCreateInfo
 {
 	Refresh_ShaderStageState vertexShaderState;
@@ -591,18 +579,28 @@ typedef struct Refresh_GraphicsPipelineCreateInfo
 	Refresh_DepthStencilState depthStencilState;
 	Refresh_ColorBlendState colorBlendState;
 	Refresh_GraphicsPipelineLayoutCreateInfo pipelineLayoutCreateInfo;
-	Refresh_RenderPass *renderPass;
+	Refresh_GraphicsPipelineAttachmentInfo attachmentInfo;
 } Refresh_GraphicsPipelineCreateInfo;
 
-typedef struct Refresh_FramebufferCreateInfo
+/* Render pass structures */
+
+typedef struct Refresh_ColorAttachmentInfo
+{
+	Refresh_RenderTarget *pRenderTarget;
+	Refresh_Vec4 clearColor; /* Can be ignored by RenderPass */
+	Refresh_LoadOp loadOp;
+	Refresh_StoreOp storeOp;
+} Refresh_ColorAttachmentInfo;
+
+typedef struct Refresh_DepthStencilAttachmentInfo
 {
-	Refresh_RenderPass *renderPass;
-	Refresh_RenderTarget **pColorTargets;
-	uint32_t colorTargetCount;
 	Refresh_RenderTarget *pDepthStencilTarget;
-	uint32_t width;
-	uint32_t height;
-} Refresh_FramebufferCreateInfo;
+	Refresh_DepthStencilValue depthStencilValue; /* Can be ignored by RenderPass */
+	Refresh_LoadOp loadOp;
+	Refresh_StoreOp storeOp;
+	Refresh_LoadOp stencilLoadOp;
+	Refresh_StoreOp stencilStoreOp;
+} Refresh_DepthStencilAttachmentInfo;
 
 /* Interop Structs */
 
@@ -802,12 +800,6 @@ REFRESHAPI void Refresh_DispatchCompute(
 
 /* State Creation */
 
-/* Returns an allocated RenderPass* object. */
-REFRESHAPI Refresh_RenderPass* Refresh_CreateRenderPass(
-	Refresh_Device *device,
-	Refresh_RenderPassCreateInfo *renderPassCreateInfo
-);
-
 /* Returns an allocated ComputePipeline* object. */
 REFRESHAPI Refresh_ComputePipeline* Refresh_CreateComputePipeline(
 	Refresh_Device *device,
@@ -826,12 +818,6 @@ REFRESHAPI Refresh_Sampler* Refresh_CreateSampler(
 	Refresh_SamplerStateCreateInfo *samplerStateCreateInfo
 );
 
-/* Returns an allocated Framebuffer* object. */
-REFRESHAPI Refresh_Framebuffer* Refresh_CreateFramebuffer(
-	Refresh_Device *device,
-	Refresh_FramebufferCreateInfo *framebufferCreateInfo
-);
-
 /* Returns an allocated ShaderModule* object. */
 REFRESHAPI Refresh_ShaderModule* Refresh_CreateShaderModule(
 	Refresh_Device *device,
@@ -1081,19 +1067,6 @@ REFRESHAPI void Refresh_QueueDestroyRenderTarget(
 	Refresh_RenderTarget *renderTarget
 );
 
-/* Sends a framebuffer to be destroyed by the renderer. Note that we call it
- * "QueueDestroy" because it may not be immediately destroyed by the renderer if
- * this is not called from the main thread (for example, if a garbage collector
- * deletes the resource instead of the programmer).
- *
- * framebuffer: The Refresh_Framebuffer to be destroyed.
- */
-REFRESHAPI void Refresh_QueueDestroyFramebuffer(
-	Refresh_Device *device,
-	Refresh_CommandBuffer *commandBuffer,
-	Refresh_Framebuffer *frameBuffer
-);
-
 /* Sends a shader module to be destroyed by the renderer. Note that we call it
  * "QueueDestroy" because it may not be immediately destroyed by the renderer if
  * this is not called from the main thread (for example, if a garbage collector
@@ -1107,19 +1080,6 @@ REFRESHAPI void Refresh_QueueDestroyShaderModule(
 	Refresh_ShaderModule *shaderModule
 );
 
-/* Sends a render pass to be destroyed by the renderer. Note that we call it
- * "QueueDestroy" because it may not be immediately destroyed by the renderer if
- * this is not called from the main thread (for example, if a garbage collector
- * deletes the resource instead of the programmer).
- *
- * renderPass: The Refresh_RenderPass to be destroyed.
- */
-REFRESHAPI void Refresh_QueueDestroyRenderPass(
-	Refresh_Device *device,
-	Refresh_CommandBuffer *commandBuffer,
-	Refresh_RenderPass *renderPass
-);
-
 /* Sends a compute pipeline to be destroyed by the renderer. Note that we call it
  * "QueueDestroy" because it may not be immediately destroyed by the renderer if
  * this is not called from the main thread (for example, if a garbage collector
@@ -1150,28 +1110,23 @@ REFRESHAPI void Refresh_QueueDestroyGraphicsPipeline(
 
 /* Begins a render pass.
  *
- * renderPass: The renderpass to begin.
- * framebuffer: The framebuffer to bind for the render pass.
  * renderArea:
  * 		The area affected by the render pass.
  * 		All load, store and resolve operations are restricted
  * 		to the given rectangle.
- * clearValues:
- * 		A pointer to an array of Refresh_Color structures
- * 		that contains clear values for each color target in the
- * 		framebuffer. May be NULL.
- * clearCount: The amount of color structs in the above array.
- * depthStencilClearValue: The depth/stencil clear value. May be NULL.
+ * colorAttachmentInfos:
+ * 		A pointer to an array of Refresh_ColorAttachmentInfo structures
+ * 		that contains render targets and clear values. May be NULL.
+ * colorAttachmentCount: The amount of structs in the above array.
+ * depthStencilAttachmentInfo: The depth/stencil render target and clear value. May be NULL.
  */
 REFRESHAPI void Refresh_BeginRenderPass(
 	Refresh_Device *device,
 	Refresh_CommandBuffer *commandBuffer,
-	Refresh_RenderPass *renderPass,
-	Refresh_Framebuffer *framebuffer,
 	Refresh_Rect *renderArea,
-	Refresh_Vec4 *pColorClearValues,
-	uint32_t colorClearCount,
-	Refresh_DepthStencilValue *depthStencilClearValue
+	Refresh_ColorAttachmentInfo *colorAttachmentInfos,
+	uint32_t colorAttachmentCount,
+	Refresh_DepthStencilAttachmentInfo *depthStencilAttachmentInfo
 );
 
 /* Ends the current render pass. */

src/Refresh.c

@@ -250,17 +250,6 @@ void Refresh_DispatchCompute(
     );
 }
 
-Refresh_RenderPass* Refresh_CreateRenderPass(
-	Refresh_Device *device,
-	Refresh_RenderPassCreateInfo *renderPassCreateInfo
-) {
-    NULL_RETURN_NULL(device);
-    return device->CreateRenderPass(
-        device->driverData,
-        renderPassCreateInfo
-    );
-}
-
 Refresh_ComputePipeline* Refresh_CreateComputePipeline(
     Refresh_Device *device,
     Refresh_ComputePipelineCreateInfo *pipelineCreateInfo
@@ -294,17 +283,6 @@ Refresh_Sampler* Refresh_CreateSampler(
     );
 }
 
-Refresh_Framebuffer* Refresh_CreateFramebuffer(
-	Refresh_Device *device,
-	Refresh_FramebufferCreateInfo *framebufferCreateInfo
-) {
-    NULL_RETURN_NULL(device);
-    return device->CreateFramebuffer(
-        device->driverData,
-        framebufferCreateInfo
-    );
-}
-
 Refresh_ShaderModule* Refresh_CreateShaderModule(
 	Refresh_Device *device,
 	Refresh_ShaderModuleCreateInfo *shaderModuleCreateInfo
@@ -592,19 +570,6 @@ void Refresh_QueueDestroyRenderTarget(
     );
 }
 
-void Refresh_QueueDestroyFramebuffer(
-	Refresh_Device *device,
-	Refresh_CommandBuffer *commandBuffer,
-	Refresh_Framebuffer *frameBuffer
-) {
-    NULL_RETURN(device);
-    device->QueueDestroyFramebuffer(
-        device->driverData,
-		commandBuffer,
-        frameBuffer
-    );
-}
-
 void Refresh_QueueDestroyShaderModule(
 	Refresh_Device *device,
 	Refresh_CommandBuffer *commandBuffer,
@@ -618,19 +583,6 @@ void Refresh_QueueDestroyShaderModule(
     );
 }
 
-void Refresh_QueueDestroyRenderPass(
-	Refresh_Device *device,
-	Refresh_CommandBuffer *commandBuffer,
-	Refresh_RenderPass *renderPass
-) {
-    NULL_RETURN(device);
-    device->QueueDestroyRenderPass(
-        device->driverData,
-		commandBuffer,
-        renderPass
-    );
-}
-
 void Refresh_QueueDestroyComputePipeline(
 	Refresh_Device *device,
 	Refresh_CommandBuffer *commandBuffer,
@@ -659,24 +611,20 @@ void Refresh_QueueDestroyGraphicsPipeline(
 
 void Refresh_BeginRenderPass(
 	Refresh_Device *device,
-    Refresh_CommandBuffer *commandBuffer,
-	Refresh_RenderPass *renderPass,
-	Refresh_Framebuffer *framebuffer,
+	Refresh_CommandBuffer *commandBuffer,
 	Refresh_Rect *renderArea,
-	Refresh_Vec4 *pColorClearValues,
-	uint32_t colorClearCount,
-	Refresh_DepthStencilValue *depthStencilClearValue
+	Refresh_ColorAttachmentInfo *colorAttachmentInfos,
+	uint32_t colorAttachmentCount,
+	Refresh_DepthStencilAttachmentInfo *depthStencilAttachmentInfo
 ) {
     NULL_RETURN(device);
     device->BeginRenderPass(
         device->driverData,
         commandBuffer,
-        renderPass,
-        framebuffer,
         renderArea,
-        pColorClearValues,
-        colorClearCount,
-        depthStencilClearValue
+        colorAttachmentInfos,
+        colorAttachmentCount,
+        depthStencilAttachmentInfo
     );
 }
 

src/Refresh_Driver.h

@@ -218,11 +218,6 @@ struct Refresh_Device
 
     /* State Creation */
 
-    Refresh_RenderPass* (*CreateRenderPass)(
-        Refresh_Renderer *driverData,
-        Refresh_RenderPassCreateInfo *renderPassCreateInfo
-    );
-
     Refresh_ComputePipeline* (*CreateComputePipeline)(
         Refresh_Renderer *driverData,
         Refresh_ComputePipelineCreateInfo *pipelineCreateInfo
@@ -238,11 +233,6 @@ struct Refresh_Device
 	    Refresh_SamplerStateCreateInfo *samplerStateCreateInfo
     );
 
-    Refresh_Framebuffer* (*CreateFramebuffer)(
-        Refresh_Renderer *driverData,
-        Refresh_FramebufferCreateInfo *framebufferCreateInfo
-    );
-
     Refresh_ShaderModule* (*CreateShaderModule)(
         Refresh_Renderer *driverData,
 	    Refresh_ShaderModuleCreateInfo *shaderModuleCreateInfo
@@ -383,24 +373,12 @@ struct Refresh_Device
 	    Refresh_RenderTarget *renderTarget
     );
 
-    void(*QueueDestroyFramebuffer)(
-        Refresh_Renderer *driverData,
-		Refresh_CommandBuffer *commandBuffer,
-        Refresh_Framebuffer *frameBuffer
-    );
-
     void(*QueueDestroyShaderModule)(
         Refresh_Renderer *driverData,
 		Refresh_CommandBuffer *commandBuffer,
         Refresh_ShaderModule *shaderModule
     );
 
-    void(*QueueDestroyRenderPass)(
-        Refresh_Renderer *driverData,
-		Refresh_CommandBuffer *commandBuffer,
-        Refresh_RenderPass *renderPass
-    );
-
     void(*QueueDestroyComputePipeline)(
         Refresh_Renderer *driverData,
 		Refresh_CommandBuffer *commandBuffer,
@@ -417,13 +395,11 @@ struct Refresh_Device
 
     void(*BeginRenderPass)(
         Refresh_Renderer *driverData,
-        Refresh_CommandBuffer *commandBuffer,
-        Refresh_RenderPass *renderPass,
-        Refresh_Framebuffer *framebuffer,
-        Refresh_Rect *renderArea,
-        Refresh_Vec4 *pColorClearValues,
-        uint32_t colorClearCount,
-        Refresh_DepthStencilValue *depthStencilClearValue
+		Refresh_CommandBuffer *commandBuffer,
+		Refresh_Rect *renderArea,
+		Refresh_ColorAttachmentInfo *colorAttachmentInfos,
+		uint32_t colorAttachmentCount,
+		Refresh_DepthStencilAttachmentInfo *depthStencilAttachmentInfo
     );
 
     void(*EndRenderPass)(
@@ -509,11 +485,9 @@ struct Refresh_Device
 	ASSIGN_DRIVER_FUNC(DrawInstancedPrimitives, name) \
 	ASSIGN_DRIVER_FUNC(DrawPrimitives, name) \
     ASSIGN_DRIVER_FUNC(DispatchCompute, name) \
-    ASSIGN_DRIVER_FUNC(CreateRenderPass, name) \
     ASSIGN_DRIVER_FUNC(CreateComputePipeline, name) \
     ASSIGN_DRIVER_FUNC(CreateGraphicsPipeline, name) \
     ASSIGN_DRIVER_FUNC(CreateSampler, name) \
-    ASSIGN_DRIVER_FUNC(CreateFramebuffer, name) \
     ASSIGN_DRIVER_FUNC(CreateShaderModule, name) \
     ASSIGN_DRIVER_FUNC(CreateTexture, name) \
     ASSIGN_DRIVER_FUNC(CreateRenderTarget, name) \
@@ -533,9 +507,7 @@ struct Refresh_Device
     ASSIGN_DRIVER_FUNC(QueueDestroySampler, name) \
     ASSIGN_DRIVER_FUNC(QueueDestroyBuffer, name) \
     ASSIGN_DRIVER_FUNC(QueueDestroyRenderTarget, name) \
-    ASSIGN_DRIVER_FUNC(QueueDestroyFramebuffer, name) \
     ASSIGN_DRIVER_FUNC(QueueDestroyShaderModule, name) \
-    ASSIGN_DRIVER_FUNC(QueueDestroyRenderPass, name) \
     ASSIGN_DRIVER_FUNC(QueueDestroyComputePipeline, name) \
     ASSIGN_DRIVER_FUNC(QueueDestroyGraphicsPipeline, name) \
     ASSIGN_DRIVER_FUNC(BeginRenderPass, name) \

src/Refresh_Driver_Template.txt

@@ -321,12 +321,6 @@ static void TEMPLATE_DispatchCompute(
 
 /* State Creation */
 
-static Refresh_RenderPass* TEMPLATE_CreateRenderPass(
-	Refresh_Renderer *driverData,
-	Refresh_RenderPassCreateInfo *renderPassCreateInfo
-) {
-	NOT_IMPLEMENTED
-}
 
 static Refresh_ComputePipeline* TEMPLATE_CreateComputePipeline(
 	Refresh_Renderer *driverData,
@@ -349,13 +343,6 @@ static Refresh_Sampler* TEMPLATE_CreateSampler(
 	NOT_IMPLEMENTED
 }
 
-static Refresh_Framebuffer* TEMPLATE_CreateFramebuffer(
-	Refresh_Renderer *driverData,
-	Refresh_FramebufferCreateInfo *framebufferCreateInfo
-) {
-	NOT_IMPLEMENTED
-}
-
 static Refresh_ShaderModule* TEMPLATE_CreateShaderModule(
 	Refresh_Renderer *driverData,
 	Refresh_ShaderModuleCreateInfo *shaderModuleCreateInfo
@@ -504,6 +491,7 @@ static void TEMPLATE_GetBufferData(
 
 static void TEMPLATE_QueueDestroyTexture(
 	Refresh_Renderer *driverData,
+	Refresh_CommandBuffer *commandBuffer,
 	Refresh_Texture *texture
 ) {
 	NOT_IMPLEMENTED
@@ -511,6 +499,7 @@ static void TEMPLATE_QueueDestroyTexture(
 
 static void TEMPLATE_QueueDestroySampler(
 	Refresh_Renderer *driverData,
+	Refresh_CommandBuffer *commandBuffer,
 	Refresh_Sampler *sampler
 ) {
 	NOT_IMPLEMENTED
@@ -518,6 +507,7 @@ static void TEMPLATE_QueueDestroySampler(
 
 static void TEMPLATE_QueueDestroyBuffer(
 	Refresh_Renderer *driverData,
+	Refresh_CommandBuffer *commandBuffer,
 	Refresh_Buffer *buffer
 ) {
 	NOT_IMPLEMENTED
@@ -525,34 +515,25 @@ static void TEMPLATE_QueueDestroyBuffer(
 
 static void TEMPLATE_QueueDestroyRenderTarget(
 	Refresh_Renderer *driverData,
+	Refresh_CommandBuffer *commandBuffer,
 	Refresh_RenderTarget *renderTarget
 ) {
 	NOT_IMPLEMENTED
 }
 
-static void TEMPLATE_QueueDestroyFramebuffer(
-	Refresh_Renderer *driverData,
-	Refresh_Framebuffer *frameBuffer
-) {
-	NOT_IMPLEMENTED
-}
-
 static void TEMPLATE_QueueDestroyShaderModule(
 	Refresh_Renderer *driverData,
+	Refresh_CommandBuffer *commandBuffer,
+
 	Refresh_ShaderModule *shaderModule
 ) {
 	NOT_IMPLEMENTED
 }
 
-static void TEMPLATE_QueueDestroyRenderPass(
-	Refresh_Renderer *driverData,
-	Refresh_RenderPass *renderPass
-) {
-	NOT_IMPLEMENTED
-}
 
 static void TEMPLATE_QueueDestroyComputePipeline(
 	Refresh_Renderer *driverData,
+	Refresh_CommandBuffer *commandBuffer,
 	Refresh_ComputePipeline *computePipeline
 ) {
 	NOT_IMPLEMENTED
@@ -560,6 +541,7 @@ static void TEMPLATE_QueueDestroyComputePipeline(
 
 static void TEMPLATE_QueueDestroyGraphicsPipeline(
 	Refresh_Renderer *driverData,
+	Refresh_CommandBuffer *commandBuffer,
 	Refresh_GraphicsPipeline *graphicsPipeline
 ) {
 	NOT_IMPLEMENTED
@@ -570,12 +552,10 @@ static void TEMPLATE_QueueDestroyGraphicsPipeline(
 static void TEMPLATE_BeginRenderPass(
 	Refresh_Renderer *driverData,
 	Refresh_CommandBuffer *commandBuffer,
-	Refresh_RenderPass *renderPass,
-	Refresh_Framebuffer *framebuffer,
 	Refresh_Rect *renderArea,
-	Refresh_Vec4 *pColorClearValues,
-	uint32_t colorClearCount,
-	Refresh_DepthStencilValue *depthStencilClearValue
+	Refresh_ColorAttachmentInfo *colorAttachmentInfos,
+	uint32_t colorAttachmentCount,
+	Refresh_DepthStencilAttachmentInfo *depthStencilAttachmentInfo
 ) {
 	NOT_IMPLEMENTED
 }