presentation loop

include/Refresh.h

@@ -932,8 +932,8 @@ REFRESHAPI void REFRESH_SetTextureDataYUV(
  *
  * NOTE:
  * 		Calling this function on a buffer after the buffer
- * 		has been bound by BindVertexBuffers but before
- * 		Present has been called is an error.
+ * 		has been bound by BindVertexBuffers without calling
+ * 		Submit first is an error.
  *
  * buffer:		The vertex buffer to be updated.
  * offsetInBytes:	The starting offset of the buffer to write into.
@@ -954,8 +954,8 @@ REFRESHAPI void REFRESH_SetVertexBufferData(
  *
  * NOTE:
  * 		Calling this function on a buffer after the buffer
- * 		has been bound by BindIndexBuffer but before
- * 		Present has been called is an error.
+ * 		has been bound by BindIndexBuffer without calling
+ * 		Submit first is an error.
  *
  * buffer:		The index buffer to be updated.
  * offsetInBytes:	The starting offset of the buffer to write into.
@@ -1249,6 +1249,7 @@ REFRESHAPI void REFRESH_BindGraphicsPipeline(
 	REFRESH_GraphicsPipeline *graphicsPipeline
 );
 
+/* Binds vertex buffers for use with subsequent draw calls. */
 REFRESHAPI void REFRESH_BindVertexBuffers(
 	REFRESH_Device *device,
 	uint32_t firstBinding,
@@ -1257,6 +1258,7 @@ REFRESHAPI void REFRESH_BindVertexBuffers(
 	uint64_t *pOffsets
 );
 
+/* Binds an index buffer for use with subsequent draw calls. */
 REFRESHAPI void REFRESH_BindIndexBuffer(
 	REFRESH_Device *device,
 	REFRESH_Buffer *buffer,
@@ -1264,14 +1266,30 @@ REFRESHAPI void REFRESH_BindIndexBuffer(
 	REFRESH_IndexElementSize indexElementSize
 );
 
-/* Presentation */
+/* Submission/Presentation */
 
-REFRESHAPI void REFRESH_Present(
+/* Prepares for an image to be presented to the screen.
+ * The image will be presented upon the next REFRESH_Submit call.
+ *
+ * NOTE:
+ *		It is an error to call this function in headless mode.
+ * 
+ * texture:					The image to present.
+ * sourceRectangle:			The region of the image to present (or NULL).
+ * destinationRectangle:	The region of the window to update (or NULL).
+ */
+REFRESHAPI void REFRESH_PreparePresent(
 	REFRESH_Device *device,
+	REFRESH_Texture* texture,
 	REFRESH_Rect *sourceRectangle,
 	REFRESH_Rect *destinationRectangle
 );
 
+/* Submits all of the enqueued commands. */
+REFRESHAPI void REFRESH_Submit(
+	REFRESH_Device* device
+);
+
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */

src/Refresh.c

@@ -346,7 +346,7 @@ REFRESH_Texture* REFRESH_CreateTextureCube(
 
 REFRESH_ColorTarget* REFRESH_GenColorTarget(
 	REFRESH_Device *device,
-	uint32_t multisampleCount,
+    REFRESH_SampleCount multisampleCount,
 	REFRESH_TextureSlice textureSlice
 ) {
     NULL_RETURN_NULL(device);
@@ -835,17 +835,28 @@ void REFRESH_BindIndexBuffer(
     );
 }
 
-void REFRESH_Present(
+void REFRESH_PreparePresent(
     REFRESH_Device *device,
+    REFRESH_Texture *texture,
     REFRESH_Rect *sourceRectangle,
     REFRESH_Rect *destinationRectangle
 ) {
     NULL_RETURN(device);
-    device->Present(
+    device->PreparePresent(
         device->driverData,
+        texture,
         sourceRectangle,
         destinationRectangle
     );
 }
 
+void REFRESH_Submit(
+    REFRESH_Device *device
+) {
+    NULL_RETURN(device);
+    device->Submit(
+        device->driverData
+    );
+}
+
 /* vim: set noexpandtab shiftwidth=8 tabstop=8: */

src/Refresh_Driver.h

@@ -268,7 +268,7 @@ struct REFRESH_Device
 
     REFRESH_ColorTarget* (*GenColorTarget)(
         REFRESH_Renderer *driverData,
-        uint32_t multisampleCount,
+        REFRESH_SampleCount multisampleCount,
         REFRESH_TextureSlice textureSlice
     );
 
@@ -505,12 +505,17 @@ struct REFRESH_Device
         REFRESH_IndexElementSize indexElementSize
     );
 
-    void(*Present)(
+    void(*PreparePresent)(
         REFRESH_Renderer *driverData,
+        REFRESH_Texture *texture,
         REFRESH_Rect *sourceRectangle,
         REFRESH_Rect *destinationRectangle
     );
 
+    void(*Submit)(
+        REFRESH_Renderer *driverData
+    );
+
 	/* Opaque pointer for the Driver */
 	REFRESH_Renderer *driverData;
 };
@@ -562,7 +567,8 @@ struct REFRESH_Device
     ASSIGN_DRIVER_FUNC(BindGraphicsPipeline, name) \
     ASSIGN_DRIVER_FUNC(BindVertexBuffers, name) \
     ASSIGN_DRIVER_FUNC(BindIndexBuffer, name) \
-    ASSIGN_DRIVER_FUNC(Present, name)
+    ASSIGN_DRIVER_FUNC(PreparePresent, name) \
+    ASSIGN_DRIVER_FUNC(Submit, name)
 
 typedef struct REFRESH_Driver
 {