- don't map the frame buffer memory every frame when doing software r…

…endering
ZDoom · Nov 23, 2019 · bff22bb · bff22bb
1 parent 8abbd63
commit bff22bb
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Showing 2 changed files with 11 additions and 2 deletions.
diff --git a/src/rendering/vulkan/textures/vk_hwtexture.cpp b/src/rendering/vulkan/textures/vk_hwtexture.cpp
@@ -69,6 +69,12 @@ void VkHardwareTexture::Reset()
 	{
 		ResetDescriptors();
 
+		if (mappedSWFB)
+		{
+			mImage.Image->Unmap();
+			mappedSWFB = nullptr;
+		}
+
 		auto &deleteList = fb->FrameDeleteList;
 		if (mImage.Image) deleteList.Images.push_back(std::move(mImage.Image));
 		if (mImage.View) deleteList.ImageViews.push_back(std::move(mImage.View));
@@ -348,12 +354,13 @@ void VkHardwareTexture::AllocateBuffer(int w, int h, int texelsize)
 
 uint8_t *VkHardwareTexture::MapBuffer()
 {
-	return (uint8_t*)mImage.Image->Map(0, mImage.Image->width * mImage.Image->height * mTexelsize);
+	if (!mappedSWFB)
+		mappedSWFB = (uint8_t*)mImage.Image->Map(0, mImage.Image->width * mImage.Image->height * mTexelsize);
+	return mappedSWFB;
 }
 
 unsigned int VkHardwareTexture::CreateTexture(unsigned char * buffer, int w, int h, int texunit, bool mipmap, int translation, const char *name)
 {
-	mImage.Image->Unmap();
 	return 0;
 }
 

diff --git a/src/rendering/vulkan/textures/vk_hwtexture.h b/src/rendering/vulkan/textures/vk_hwtexture.h
@@ -77,4 +77,6 @@ class VkHardwareTexture : public IHardwareTexture
 	int mTexelsize = 4;
 
 	VkTextureImage mDepthStencil;
+
+	uint8_t* mappedSWFB = nullptr;
 };