memory system tweaks

This reverts commit 20636ec951.

CMakeLists.txt

@@ -8,8 +8,8 @@ option(BUILD_SHARED_LIBS "Build shared library" ON)
 
 # Version
 SET(LIB_MAJOR_VERSION "1")
-SET(LIB_MINOR_VERSION "10")
-SET(LIB_REVISION "0")
+SET(LIB_MINOR_VERSION "15")
+SET(LIB_REVISION "4")
 SET(LIB_VERSION "${LIB_MAJOR_VERSION}.${LIB_MINOR_VERSION}.${LIB_REVISION}")
 
 # Build Type
@@ -60,6 +60,11 @@ if(NOT MSVC)
 	set_property(TARGET Refresh PROPERTY COMPILE_FLAGS "-std=gnu99 -Wall -Wno-strict-aliasing -pedantic")
 endif()
 
+# Windows is silly and we need to manually include the Vulkan SDK
+if(MSVC)
+	target_include_directories(Refresh PUBLIC $ENV{VULKAN_SDK}/include)
+endif()
+
 # Refresh folders as includes, for other targets to consume
 target_include_directories(Refresh PUBLIC
 	$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src>

include/Refresh.h

@@ -55,8 +55,8 @@ extern "C" {
 /* Version API */
 
 #define REFRESH_MAJOR_VERSION   1
-#define REFRESH_MINOR_VERSION	10
-#define REFRESH_PATCH_VERSION	0
+#define REFRESH_MINOR_VERSION	15
+#define REFRESH_PATCH_VERSION	4
 
 #define REFRESH_COMPILED_VERSION ( \
 	(REFRESH_MAJOR_VERSION * 100 * 100) + \
@@ -76,6 +76,7 @@ typedef struct Refresh_ShaderModule Refresh_ShaderModule;
 typedef struct Refresh_ComputePipeline Refresh_ComputePipeline;
 typedef struct Refresh_GraphicsPipeline Refresh_GraphicsPipeline;
 typedef struct Refresh_CommandBuffer Refresh_CommandBuffer;
+typedef struct Refresh_Fence Refresh_Fence;
 
 typedef enum Refresh_PresentMode
 {
@@ -463,6 +464,7 @@ typedef struct Refresh_TextureCreateInfo
 	uint32_t depth;
 	uint8_t isCube;
 	uint32_t levelCount;
+	Refresh_SampleCount sampleCount;
 	Refresh_TextureFormat format;
 	Refresh_TextureUsageFlags usageFlags;
 } Refresh_TextureCreateInfo;
@@ -551,7 +553,6 @@ typedef struct Refresh_ColorAttachmentInfo
 	uint32_t depth;
 	uint32_t layer;
 	uint32_t level;
-	Refresh_SampleCount sampleCount;
 	Refresh_Vec4 clearColor; /* Can be ignored by RenderPass */
 	Refresh_LoadOp loadOp;
 	Refresh_StoreOp storeOp;
@@ -785,8 +786,13 @@ REFRESHAPI void Refresh_SetTextureData(
  * yHeight:      The height of the Y plane.
  * uvWidth:      The width of the U/V planes.
  * uvHeight:     The height of the U/V planes.
- * data:	A pointer to the raw YUV image data.
- * dataLength:	The size of the image data in bytes.
+ * yData:        A pointer to the raw Y image data.
+ * uData:        A pointer to the raw U image data.
+ * vData:        A pointer to the raw V image data.
+ * yDataLength:  The size of the Y image data in bytes.
+ * uvDataLength: The size of the UV image data in bytes.
+ * yStride:      The length of a Y image data row in bytes.
+ * uvStride:     The length of a UV image data row in bytes.
  */
 REFRESHAPI void Refresh_SetTextureDataYUV(
 	Refresh_Device *driverData,
@@ -798,8 +804,13 @@ REFRESHAPI void Refresh_SetTextureDataYUV(
 	uint32_t yHeight,
 	uint32_t uvWidth,
 	uint32_t uvHeight,
-	void* data,
-	uint32_t dataLength
+	void *yDataPtr,
+	void *uDataPtr,
+	void *vDataPtr,
+	uint32_t yDataLength,
+	uint32_t uvDataLength,
+	uint32_t yStride,
+	uint32_t uvStride
 );
 
 /* Performs an asynchronous texture-to-texture copy.
@@ -1196,15 +1207,50 @@ REFRESHAPI Refresh_Texture* Refresh_AcquireSwapchainTexture(
 /* Submits all of the enqueued commands. */
 REFRESHAPI void Refresh_Submit(
 	Refresh_Device* device,
-	uint32_t commandBufferCount,
-	Refresh_CommandBuffer **pCommandBuffers
+	Refresh_CommandBuffer *commandBuffer
 );
 
-/* Waits for all submissions to complete. */
+/* Submits a command buffer and acquires a fence.
+ * You can use the fence to check if or wait until the command buffer has finished processing.
+ * You are responsible for releasing this fence when you are done using it.
+ */
+REFRESHAPI Refresh_Fence* Refresh_SubmitAndAcquireFence(
+	Refresh_Device* device,
+	Refresh_CommandBuffer *commandBuffer
+);
+
+/* Waits for the device to become idle. */
 REFRESHAPI void Refresh_Wait(
 	Refresh_Device *device
 );
 
+/* Waits for given fences to be signaled.
+ *
+ * waitAll: If 0, waits for any fence to be signaled. If 1, waits for all fences to be signaled.
+ * fenceCount: The number of fences being submitted.
+ * pFences: An array of fences to be waited on.
+ */
+REFRESHAPI void Refresh_WaitForFences(
+	Refresh_Device *device,
+	uint8_t waitAll,
+	uint32_t fenceCount,
+	Refresh_Fence **pFences
+);
+
+/* Check the status of a fence. 1 means the fence is signaled. */
+REFRESHAPI int Refresh_QueryFence(
+	Refresh_Device *device,
+	Refresh_Fence *fence
+);
+
+/* Allows the fence to be reused by future command buffer submissions.
+ * If you do not release fences after acquiring them, you will cause unbounded resource growth.
+ */
+REFRESHAPI void Refresh_ReleaseFence(
+	Refresh_Device *device,
+	Refresh_Fence *fence
+);
+
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */

include/Refresh_Image.h

@@ -44,44 +44,45 @@
 extern "C" {
 #endif /* __cplusplus */
 
-/* Decodes PNG data into raw RGBA8 texture data.
+/* Image Read API */
+
+/* Decodes image data into raw RGBA8 texture data.
  *
  * w:		    Filled with the width of the image.
  * h:		    Filled with the height of the image.
- * numChannels: Filled with the number of channels in the image.
+ * len:			Filled with the length of pixel data in bytes.
  *
  * Returns a block of memory suitable for use with Refresh_SetTextureData2D.
  * Be sure to free the memory with Refresh_Image_Free after use!
  */
 REFRESHAPI uint8_t* Refresh_Image_Load(
-	char const *filename,
+	uint8_t *bufferPtr,
+	int32_t bufferLength,
 	int32_t *w,
 	int32_t *h,
-	int32_t *numChannels
+	int32_t *len
 );
 
-/* Frees memory returned by Refresh_Image_Load. (Do NOT free the memory yourself!)
+/* Frees memory returned by Refresh_Image_Load. Do NOT free the memory yourself!
  *
- * mem: A pointer previously returned by Refresh_Image_Load.
+ * mem: A pointer previously returned by Refresh_Image_LoadPNG.
  */
 REFRESHAPI void Refresh_Image_Free(uint8_t *mem);
 
 /* Image Write API */
 
-/* Encodes 32-bit color data into PNG data.
+/* Returns a buffer of PNG encoded from RGBA8 color data.
  *
- * filename:    The filename that the image will be written to.
- * w:	        The width of the PNG data.
- * h:	        The height of the PNG data.
- * bgra:		Whether the data is in BGRA8 format. Otherwise will assume RBGA8.
  * data:	The raw color data.
+ * w:		The width of the color data.
+ * h:		The height of the color data.
+ * len:		Filled with the length of PNG data in bytes.
  */
 REFRESHAPI void Refresh_Image_SavePNG(
-	char const *filename,
+	const char* filename,
+	uint8_t* data,
 	int32_t w,
-	int32_t h,
-	uint8_t bgra,
-	uint8_t *data
+	int32_t h
 );
 
 #ifdef __cplusplus

shadercompiler/Program.cs

@@ -186,7 +186,7 @@ partial class Program
 		}
 
 		// Create the output blob file
-		string outputFilepath = Path.Combine(data.outputDir, $"{shaderName}.refresh");
+		string outputFilepath = Path.Combine(data.outputDir, $"{shaderName}{shaderType}.refresh");
 		using (FileStream fs = File.Create(outputFilepath))
 		{
 			using (BinaryWriter writer = new BinaryWriter(fs))
@@ -238,7 +238,7 @@ partial class Program
 	{
 		Process glslc = Process.Start(
 			"glslc",
-			$"{glslPath} -o {outputPath}"
+			$"\"{glslPath}\" -o \"{outputPath}\""
 		);
 		glslc.WaitForExit();
 		if (glslc.ExitCode != 0)
@@ -254,7 +254,7 @@ partial class Program
 	{
 		Process spirvcross = Process.Start(
 			"spirv-cross",
-			$"{spirvPath} --hlsl --shader-model 50 --output {outputPath}"
+			$"\"{spirvPath}\" --hlsl --shader-model 50 --output \"{outputPath}\""
 		);
 		spirvcross.WaitForExit();
 		if (spirvcross.ExitCode != 0)

shadercompiler/refreshc.csproj

@@ -4,6 +4,7 @@
     <OutputType>Exe</OutputType>
     <TargetFramework>net7.0</TargetFramework>
     <TargetName>refreshc</TargetName>
+	<PublishAot>true</PublishAot>
   </PropertyGroup>
 
 </Project>

src/Refresh.c

@@ -438,8 +438,13 @@ void Refresh_SetTextureDataYUV(
 	uint32_t yHeight,
 	uint32_t uvWidth,
 	uint32_t uvHeight,
-	void* data,
-	uint32_t dataLength
+	void *yDataPtr,
+	void *uDataPtr,
+	void *vDataPtr,
+	uint32_t yDataLength,
+	uint32_t uvDataLength,
+	uint32_t yStride,
+	uint32_t uvStride
 ) {
 	NULL_RETURN(device);
 	device->SetTextureDataYUV(
@@ -452,8 +457,13 @@ void Refresh_SetTextureDataYUV(
 		yHeight,
 		uvWidth,
 		uvHeight,
-		data,
-		dataLength
+		yDataPtr,
+		uDataPtr,
+		vDataPtr,
+		yDataLength,
+		uvDataLength,
+		yStride,
+		uvStride
 	);
 }
 
@@ -882,14 +892,23 @@ void Refresh_SetSwapchainPresentMode(
 
 void Refresh_Submit(
 	Refresh_Device *device,
-	uint32_t commandBufferCount,
-	Refresh_CommandBuffer **pCommandBuffers
+	Refresh_CommandBuffer *commandBuffer
 ) {
 	NULL_RETURN(device);
 	device->Submit(
 		device->driverData,
-		commandBufferCount,
-		pCommandBuffers
+		commandBuffer
+	);
+}
+
+Refresh_Fence* Refresh_SubmitAndAcquireFence(
+	Refresh_Device *device,
+	Refresh_CommandBuffer *commandBuffer
+) {
+	NULL_RETURN_NULL(device);
+	return device->SubmitAndAcquireFence(
+		device->driverData,
+		commandBuffer
 	);
 }
 
@@ -902,4 +921,44 @@ void Refresh_Wait(
 	);
 }
 
+void Refresh_WaitForFences(
+	Refresh_Device *device,
+	uint8_t waitAll,
+	uint32_t fenceCount,
+	Refresh_Fence **pFences
+) {
+	NULL_RETURN(device);
+	device->WaitForFences(
+		device->driverData,
+		waitAll,
+		fenceCount,
+		pFences
+	);
+}
+
+int Refresh_QueryFence(
+	Refresh_Device *device,
+	Refresh_Fence *fence
+) {
+	if (device == NULL) {
+		return 0;
+	}
+
+	return device->QueryFence(
+		device->driverData,
+		fence
+	);
+}
+
+void Refresh_ReleaseFence(
+	Refresh_Device *device,
+	Refresh_Fence *fence
+) {
+	NULL_RETURN(device);
+	device->ReleaseFence(
+		device->driverData,
+		fence
+	);
+}
+
 /* vim: set noexpandtab shiftwidth=8 tabstop=8: */

src/Refresh_Driver.h

@@ -286,8 +286,13 @@ struct Refresh_Device
 		uint32_t yHeight,
 		uint32_t uvWidth,
 		uint32_t uvHeight,
-		void* data,
-		uint32_t dataLength
+		void *yDataPtr,
+		void *uDataPtr,
+		void *vDataPtr,
+		uint32_t yDataLength,
+		uint32_t uvDataLength,
+		uint32_t yStride,
+		uint32_t uvStride
 	);
 
 	void (*CopyTextureToTexture)(
@@ -494,14 +499,35 @@ struct Refresh_Device
 
 	void (*Submit)(
 		Refresh_Renderer *driverData,
-		uint32_t commandBufferCount,
-		Refresh_CommandBuffer **pCommandBuffers
+		Refresh_CommandBuffer *commandBuffer
+	);
+
+	Refresh_Fence* (*SubmitAndAcquireFence)(
+		Refresh_Renderer *driverData,
+		Refresh_CommandBuffer *commandBuffer
 	);
 
 	void (*Wait)(
 		Refresh_Renderer *driverData
 	);
 
+	void (*WaitForFences)(
+		Refresh_Renderer *driverData,
+		uint8_t waitAll,
+		uint32_t fenceCount,
+		Refresh_Fence **pFences
+	);
+
+	int (*QueryFence)(
+		Refresh_Renderer *driverData,
+		Refresh_Fence *fence
+	);
+
+	void (*ReleaseFence)(
+		Refresh_Renderer *driverData,
+		Refresh_Fence *fence
+	);
+
 	/* Opaque pointer for the Driver */
 	Refresh_Renderer *driverData;
 };
@@ -555,7 +581,11 @@ struct Refresh_Device
 	ASSIGN_DRIVER_FUNC(GetSwapchainFormat, name) \
 	ASSIGN_DRIVER_FUNC(SetSwapchainPresentMode, name) \
 	ASSIGN_DRIVER_FUNC(Submit, name) \
-	ASSIGN_DRIVER_FUNC(Wait, name)
+	ASSIGN_DRIVER_FUNC(SubmitAndAcquireFence, name) \
+	ASSIGN_DRIVER_FUNC(Wait, name) \
+	ASSIGN_DRIVER_FUNC(WaitForFences, name) \
+	ASSIGN_DRIVER_FUNC(QueryFence, name) \
+	ASSIGN_DRIVER_FUNC(ReleaseFence, name)
 
 typedef struct Refresh_Driver
 {

src/Refresh_Driver_Template.txt

@@ -268,6 +268,19 @@ static void TEMPLATE_DrawPrimitives(
 	NOT_IMPLEMENTED
 }
 
+static void TEMPLATE_DrawPrimitivesIndirect(
+	Refresh_Renderer *driverData,
+	Refresh_CommandBuffer *commandBuffer,
+	Refresh_Buffer *buffer,
+	uint32_t offsetInBytes,
+	uint32_t drawCount,
+	uint32_t stride,
+	uint32_t vertexParamOffset,
+	uint32_t fragmentParamOffset
+) {
+	NOT_IMPLEMENTED
+}
+
 static void TEMPLATE_DispatchCompute(
 	Refresh_Renderer *device,
 	Refresh_CommandBuffer *commandBuffer,
@@ -347,8 +360,13 @@ static void TEMPLATE_SetTextureDataYUV(
 	uint32_t yHeight,
 	uint32_t uvWidth,
 	uint32_t uvHeight,
-	void* data,
-	uint32_t dataLength
+	void *yDataPtr,
+	void *uDataPtr,
+	void *vDataPtr,
+	uint32_t yDataLength,
+	uint32_t uvDataLength,
+	uint32_t yStride,
+	uint32_t uvStride
 ) {
 	NOT_IMPLEMENTED
 }
@@ -485,10 +503,15 @@ static void TEMPLATE_QueueDestroyGraphicsPipeline(
 
 /* Graphics State */
 
+static Refresh_CommandBuffer* TEMPLATE_AcquireCommandBuffer(
+	Refresh_Renderer *driverData
+) {
+	NOT_IMPLEMENTED
+}
+
 static void TEMPLATE_BeginRenderPass(
 	Refresh_Renderer *driverData,
 	Refresh_CommandBuffer *commandBuffer,
-	Refresh_Rect *renderArea,
 	Refresh_ColorAttachmentInfo *colorAttachmentInfos,
 	uint32_t colorAttachmentCount,
 	Refresh_DepthStencilAttachmentInfo *depthStencilAttachmentInfo
@@ -548,6 +571,8 @@ static void TEMPLATE_BindIndexBuffer(
 	NOT_IMPLEMENTED
 }
 
+/* Compute State */
+
 static void TEMPLATE_BindComputePipeline(
 	Refresh_Renderer *driverData,
 	Refresh_CommandBuffer *commandBuffer,
@@ -572,14 +597,24 @@ static void TEMPLATE_BindComputeTextures(
 	NOT_IMPLEMENTED
 }
 
-static Refresh_CommandBuffer* TEMPLATE_AcquireCommandBuffer(
+/* Window and Swapchain Management */
+
+static uint8_t TEMPLATE_ClaimWindow(
 	Refresh_Renderer *driverData,
-	uint8_t fixed
+	void *windowHandle,
+	Refresh_PresentMode presentMode
 ) {
 	NOT_IMPLEMENTED
 }
 
-Refresh_Texture* TEMPLATE_AcquireSwapchainTexture(
+static void TEMPLATE_UnclaimWindow(
+	Refresh_Renderer *driverData,
+	void *windowHandle
+) {
+	NOT_IMPLEMENTED
+}
+
+static Refresh_Texture* TEMPLATE_AcquireSwapchainTexture(
 	Refresh_Renderer *driverData,
 	Refresh_CommandBuffer *commandBuffer,
 	void *windowHandle,
@@ -589,17 +624,33 @@ Refresh_Texture* TEMPLATE_AcquireSwapchainTexture(
 	NOT_IMPLEMENTED
 }
 
-Refresh_TextureFormat TEMPLATE_GetSwapchainFormat(
+static Refresh_TextureFormat TEMPLATE_GetSwapchainFormat(
 	Refresh_Renderer *driverData,
 	void *windowHandle
 ) {
 	NOT_IMPLEMENTED
 }
 
+static void TEMPLATE_SetSwapchainPresentMode(
+	Refresh_Renderer *driverData,
+	void *windowHandle,
+	Refresh_PresentMode presentMode
+) {
+	NOT_IMPLEMENTED
+}
+
+/* Submission and Fences */
+
 static void TEMPLATE_Submit(
 	Refresh_Renderer *driverData,
-	uint32_t commandBufferCount,
-	Refresh_CommandBuffer **pCommandBuffers
+	Refresh_CommandBuffer *commandBuffer
+) {
+	NOT_IMPLEMENTED
+}
+
+static Refresh_Fence* TEMPLATE_SubmitAndAcquireFence(
+	Refresh_Renderer *driverData,
+	Refresh_CommandBuffer *commandBuffer
 ) {
 	NOT_IMPLEMENTED
 }
@@ -610,8 +661,38 @@ static void TEMPLATE_Wait(
 	NOT_IMPLEMENTED
 }
 
+static void TEMPLATE_WaitForFences(
+	Refresh_Renderer *driverData,
+	uint8_t waitAll,
+	uint32_t fenceCount,
+	Refresh_Fence **pFences
+) {
+	NOT_IMPLEMENTED
+}
+
+static int TEMPLATE_QueryFence(
+	Refresh_Renderer *driverData,
+	Refresh_Fence *fence
+) {
+	NOT_IMPLEMENTED
+}
+
+static void TEMPLATE_ReleaseFence(
+	Refresh_Renderer *driverData,
+	Refresh_Fence *fence
+) {
+	NOT_IMPLEMENTED
+}
+
+/* Device Creation */
+
+static uint8_t TEMPLATE_PrepareDriver(
+	uint32_t *flags
+) {
+	NOT_IMPLEMENTED
+}
+
 static Refresh_Device* TEMPLATE_CreateDevice(
-	Refresh_PresentationParameters *presentationParameters,
 	uint8_t debugMode
 ) {
 	NOT_IMPLEMENTED
@@ -619,6 +700,7 @@ static Refresh_Device* TEMPLATE_CreateDevice(
 
 Refresh_Driver TEMPLATEDriver = {
 	"TEMPLATE",
+	TEMPLATE_PrepareDriver,
 	TEMPLATE_CreateDevice
 };
 

src/Refresh_Driver_Vulkan_vkfuncs.h

@@ -89,6 +89,7 @@ VULKAN_DEVICE_FUNCTION(BaseVK, void, vkCmdClearDepthStencilImage, (VkCommandBuff
 VULKAN_DEVICE_FUNCTION(BaseVK, void, vkCmdCopyBuffer, (VkCommandBuffer commandBuffer, VkBuffer srcBuffer, VkBuffer dstBuffer, uint32_t regionCount, const VkBufferCopy* pRegions))
 VULKAN_DEVICE_FUNCTION(BaseVK, void, vkCmdCopyBufferToImage, (VkCommandBuffer commandBuffer, VkBuffer srcBuffer, VkImage dstImage, VkImageLayout dstImageLayout, uint32_t regionCount, const VkBufferImageCopy *pRegions))
 VULKAN_DEVICE_FUNCTION(BaseVK, void, vkCmdCopyImageToBuffer, (VkCommandBuffer commandBuffer, VkImage srcImage, VkImageLayout srcImageLayout, VkBuffer dstBuffer, uint32_t regionCount, const VkBufferImageCopy *pRegions))
+VULKAN_DEVICE_FUNCTION(BaseVK, void, vkCmdCopyImage, (VkCommandBuffer commandBuffer, VkImage srcImage, VkImageLayout srcImageLayout, VkImage dstImage, VkImageLayout dstImageLayout, uint32_t regionCount, const VkImageCopy* pRegions))
 VULKAN_DEVICE_FUNCTION(BaseVK, void, vkCmdDispatch, (VkCommandBuffer commandBuffer, uint32_t groupCountX, uint32_t groupCountY, uint32_t groupCountZ))
 VULKAN_DEVICE_FUNCTION(BaseVK, void, vkCmdDraw, (VkCommandBuffer commandBuffer, uint32_t vertexCount, uint32_t instanceCount, uint32_t firstVertex, uint32_t firstInstance))
 VULKAN_DEVICE_FUNCTION(BaseVK, void, vkCmdDrawIndexed, (VkCommandBuffer commandBuffer, uint32_t indexCount, uint32_t instanceCount, uint32_t firstIndex, int32_t vertexOffset, uint32_t firstInstance))

src/Refresh_Image.c

@@ -48,7 +48,6 @@
 #define floorf SDL_floorf
 #define ldexp SDL_scalbn
 #define pow SDL_pow
-#define strtol SDL_strtol
 
 #ifdef memcmp
 #undef memcmp
@@ -74,13 +73,10 @@
 #undef strlen
 #endif
 #define strlen SDL_strlen
-#ifdef strncmp
-#undef strncmp
-#endif
-#define strncmp SDL_strncmp
 
 /* These are per the Texture2D.FromStream spec */
 #define STBI_ONLY_PNG
+#define STBI_ONLY_QOI
 
 /* These are per the Texture2D.SaveAs* spec */
 #define STBIW_ONLY_PNG
@@ -140,6 +136,7 @@ SDL_SIMDRealloc(void *mem, const size_t len)
 #endif
 
 #define STB_IMAGE_STATIC
+#define STBI_NO_HDR
 #define STBI_ASSERT SDL_assert
 #define STBI_MALLOC SDL_SIMDAlloc
 #define STBI_REALLOC SDL_SIMDRealloc
@@ -190,51 +187,72 @@ static unsigned char* dgibson_stbi_zlib_compress(
 /* Image Read API */
 
 uint8_t* Refresh_Image_Load(
-	char const *filename,
+	uint8_t *bufferPtr,
+	int32_t bufferLength,
 	int32_t *w,
 	int32_t *h,
-	int32_t *numChannels
+	int32_t *len
 ) {
-	return stbi_load(filename, w, h, numChannels, STBI_rgb_alpha);
+	uint8_t* result;
+	uint8_t* pixels;
+	int32_t format;
+	int32_t i;
+
+	result = stbi_load_from_memory(
+		bufferPtr,
+		bufferLength,
+		w,
+		h,
+		&format,
+		STBI_rgb_alpha
+	);
+
+	if (result == NULL)
+	{
+		SDL_LogWarn(SDL_LOG_CATEGORY_ERROR, "Image loading failed: %s", stbi_failure_reason());
+	}
+
+	/* Ensure that the alpha pixels are... well, actual alpha.
+	 * You think this looks stupid, but be assured: Your paint program is
+	 * almost certainly even stupider.
+	 * -flibit
+	 */
+	pixels = result;
+	*len = (*w) * (*h) *4;
+	for (i = 0; i < *len; i += 4, pixels += 4)
+	{
+		if (pixels[3] == 0)
+		{
+			pixels[0] = 0;
+			pixels[1] = 1;
+			pixels[2] = 2;
+		}
+	}
+
+	return result;
 }
 
 void Refresh_Image_Free(uint8_t *mem)
 {
-	stbi_image_free(mem);
+	SDL_SIMDFree(mem);
 }
 
 /* Image Write API */
 
 void Refresh_Image_SavePNG(
 	const char* filename,
+	uint8_t* data,
 	int32_t w,
-	int32_t h,
-	uint8_t bgra,
-	uint8_t *data
+	int32_t h
 ) {
-	uint32_t i;
-	uint8_t *bgraData;
-
-	if (bgra)
-	{
-		bgraData = SDL_malloc(w * h * 4);
-
-		for (i = 0; i < w * h * 4; i += 4)
-		{
-			bgraData[i]     = data[i + 2];
-			bgraData[i + 1] = data[i + 1];
-			bgraData[i + 2] = data[i];
-			bgraData[i + 3] = data[i + 3];
-		}
-
-		stbi_write_png(filename, w, h, 4, bgraData, w * 4);
-
-		SDL_free(bgraData);
-	}
-	else
-	{
-		stbi_write_png(filename, w, h, 4, data, w * 4);
-	}
+	stbi_write_png(
+		filename,
+		w,
+		h,
+		4,
+		data,
+		w * 4
+	);
 }
 
 /* vim: set noexpandtab shiftwidth=8 tabstop=8: */