- change the images to be upside down until presentation to increase compatibility with shaders designed for OpenGL

- clamp scissors fully to avoid NVidia's awful drivers locking up the entire system if they end up out of bounds
- perform buffer clears as part of the render pass. this puts some restrictions on how FRenderState.Clear can be used
- add an offset uniform to the present shaders so the vulkan target can flip the image during presentation

src/rendering/gl/renderer/gl_postprocess.cpp

@@ -248,6 +248,7 @@ void FGLRenderer::DrawPresentTexture(const IntRect &box, bool applyGamma)
 		mPresentShader->Uniforms->ColorScale = (gl_dither_bpc == -1) ? 255.0f : (float)((1 << gl_dither_bpc) - 1);
 	}
 	mPresentShader->Uniforms->Scale = { screen->mScreenViewport.width / (float)mBuffers->GetWidth(), screen->mScreenViewport.height / (float)mBuffers->GetHeight() };
+	mPresentShader->Uniforms->Offset = { 0.0f, 0.0f };
 	mPresentShader->Uniforms.Set();
 	RenderScreenQuad();
 }

src/rendering/gl/renderer/gl_stereo3d.cpp

@@ -173,6 +173,7 @@ void FGLRenderer::prepareInterleavedPresent(FPresentShaderBase& shader)
 		screen->mScreenViewport.width / (float)mBuffers->GetWidth(),
 		screen->mScreenViewport.height / (float)mBuffers->GetHeight()
 	};
+	shader.Uniforms->Offset = { 0.0f, 0.0f };
 	shader.Uniforms.Set();
 }
 

src/rendering/hwrenderer/postprocessing/hw_postprocess.h

@@ -613,8 +613,9 @@ struct PresentUniforms
 	int GrayFormula;
 	int WindowPositionParity; // top-of-window might not be top-of-screen
 	FVector2 Scale;
+	FVector2 Offset;
 	float ColorScale;
-	float Padding1, Padding2, Padding3;
+	float Padding;
 
 	static std::vector<UniformFieldDesc> Desc()
 	{
@@ -627,6 +628,7 @@ struct PresentUniforms
 			{ "GrayFormula", UniformType::Int, offsetof(PresentUniforms, GrayFormula) },
 			{ "WindowPositionParity", UniformType::Int, offsetof(PresentUniforms, WindowPositionParity) },
 			{ "UVScale", UniformType::Vec2, offsetof(PresentUniforms, Scale) },
+			{ "UVOffset", UniformType::Vec2, offsetof(PresentUniforms, Offset) },
 			{ "ColorScale", UniformType::Float, offsetof(PresentUniforms, ColorScale) },
 		};
 	}

src/rendering/vulkan/renderer/vk_postprocess.cpp

@@ -43,15 +43,6 @@ void VkPostprocess::PostProcessScene(int fixedcm, const std::function<void()> &a
 	auto fb = GetVulkanFrameBuffer();
 
 	hw_postprocess.fixedcm = fixedcm;
-	hw_postprocess.SceneWidth = fb->GetBuffers()->GetSceneWidth();
-	hw_postprocess.SceneHeight = fb->GetBuffers()->GetSceneHeight();
-
-	hw_postprocess.DeclareShaders();
-	hw_postprocess.UpdateTextures();
-	hw_postprocess.UpdateSteps();
-
-	CompileEffectShaders();
-	UpdateEffectTextures();
 
 	RenderEffect("UpdateCameraExposure");
 	//mCustomPostProcessShaders->Run("beforebloom");
@@ -133,12 +124,6 @@ void VkPostprocess::DrawPresentTexture(const IntRect &box, bool applyGamma, bool
 {
 	auto fb = GetVulkanFrameBuffer();
 
-	hw_postprocess.DeclareShaders();
-	hw_postprocess.UpdateTextures();
-	hw_postprocess.UpdateSteps();
-	CompileEffectShaders();
-	UpdateEffectTextures();
-
 	PresentUniforms uniforms;
 	if (!applyGamma /*|| framebuffer->IsHWGammaActive()*/)
 	{
@@ -156,7 +141,8 @@ void VkPostprocess::DrawPresentTexture(const IntRect &box, bool applyGamma, bool
 		uniforms.GrayFormula = static_cast<int>(gl_satformula);
 	}
 	uniforms.ColorScale = (gl_dither_bpc == -1) ? 255.0f : (float)((1 << gl_dither_bpc) - 1);
-	uniforms.Scale = { screen->mScreenViewport.width / (float)fb->GetBuffers()->GetWidth(), screen->mScreenViewport.height / (float)fb->GetBuffers()->GetHeight() };
+	uniforms.Scale = { screen->mScreenViewport.width / (float)fb->GetBuffers()->GetWidth(), -screen->mScreenViewport.height / (float)fb->GetBuffers()->GetHeight() };
+	uniforms.Offset = { 0.0f, 1.0f };
 
 	PPStep step;
 	step.ShaderName = "Present";
@@ -177,36 +163,15 @@ void VkPostprocess::DrawPresentTexture(const IntRect &box, bool applyGamma, bool
 
 void VkPostprocess::AmbientOccludeScene(float m5)
 {
-	auto fb = GetVulkanFrameBuffer();
-
-	hw_postprocess.SceneWidth = fb->GetBuffers()->GetSceneWidth();
-	hw_postprocess.SceneHeight = fb->GetBuffers()->GetSceneHeight();
 	hw_postprocess.m5 = m5;
 
-	hw_postprocess.DeclareShaders();
-	hw_postprocess.UpdateTextures();
-	hw_postprocess.UpdateSteps();
-
-	CompileEffectShaders();
-	UpdateEffectTextures();
-
 	RenderEffect("AmbientOccludeScene");
 }
 
 void VkPostprocess::BlurScene(float gameinfobluramount)
 {
-	auto fb = GetVulkanFrameBuffer();
-	hw_postprocess.SceneWidth = fb->GetBuffers()->GetSceneWidth();
-	hw_postprocess.SceneHeight = fb->GetBuffers()->GetSceneHeight();
 	hw_postprocess.gameinfobluramount = gameinfobluramount;
 
-	hw_postprocess.DeclareShaders();
-	hw_postprocess.UpdateTextures();
-	hw_postprocess.UpdateSteps();
-
-	CompileEffectShaders();
-	UpdateEffectTextures();
-
 	auto vrmode = VRMode::GetVRMode(true);
 	int eyeCount = vrmode->mEyeCount;
 	for (int i = 0; i < eyeCount; ++i)
@@ -233,6 +198,17 @@ void VkPostprocess::BeginFrame()
 		mDescriptorPool = builder.create(GetVulkanFrameBuffer()->device);
 		mDescriptorPool->SetDebugName("VkPostprocess.mDescriptorPool");
 	}
+
+	auto fb = GetVulkanFrameBuffer();
+	hw_postprocess.SceneWidth = fb->GetBuffers()->GetSceneWidth();
+	hw_postprocess.SceneHeight = fb->GetBuffers()->GetSceneHeight();
+
+	hw_postprocess.DeclareShaders();
+	hw_postprocess.UpdateTextures();
+	hw_postprocess.UpdateSteps();
+
+	CompileEffectShaders();
+	UpdateEffectTextures();
 }
 
 void VkPostprocess::RenderBuffersReset()
@@ -401,11 +377,11 @@ void VkPostprocess::RenderEffect(const FString &name)
 		if (!passSetup)
 			passSetup.reset(new VkPPRenderPassSetup(key));
 
-		int framebufferHeight = 0;
+		int framebufferWidth = 0, framebufferHeight = 0;
 		VulkanDescriptorSet *input = GetInput(passSetup.get(), step.Textures);
-		VulkanFramebuffer *output = GetOutput(passSetup.get(), step.Output, framebufferHeight);
+		VulkanFramebuffer *output = GetOutput(passSetup.get(), step.Output, framebufferWidth, framebufferHeight);
 
-		RenderScreenQuad(passSetup.get(), input, output, framebufferHeight, step.Viewport.left, step.Viewport.top, step.Viewport.width, step.Viewport.height, step.Uniforms.Data.Data(), step.Uniforms.Data.Size());
+		RenderScreenQuad(passSetup.get(), input, output, framebufferWidth, framebufferHeight, step.Viewport.left, step.Viewport.top, step.Viewport.width, step.Viewport.height, step.Uniforms.Data.Data(), step.Uniforms.Data.Size());
 
 		// Advance to next PP texture if our output was sent there
 		if (step.Output.Type == PPTextureType::NextPipelineTexture)
@@ -415,41 +391,30 @@ void VkPostprocess::RenderEffect(const FString &name)
 	}
 }
 
-void VkPostprocess::RenderScreenQuad(VkPPRenderPassSetup *passSetup, VulkanDescriptorSet *descriptorSet, VulkanFramebuffer *framebuffer, int framebufferHeight, int x, int y, int width, int height, const void *pushConstants, uint32_t pushConstantsSize)
+void VkPostprocess::RenderScreenQuad(VkPPRenderPassSetup *passSetup, VulkanDescriptorSet *descriptorSet, VulkanFramebuffer *framebuffer, int framebufferWidth, int framebufferHeight, int x, int y, int width, int height, const void *pushConstants, uint32_t pushConstantsSize)
 {
 	auto fb = GetVulkanFrameBuffer();
 	auto cmdbuffer = fb->GetDrawCommands();
 
-	RenderPassBegin beginInfo;
-	beginInfo.setRenderPass(passSetup->RenderPass.get());
-	beginInfo.setRenderArea(x, y, width, height);
-	beginInfo.setFramebuffer(framebuffer);
-	beginInfo.addClearColor(0.0f, 0.0f, 0.0f, 1.0f);
-
 	VkViewport viewport = { };
 	viewport.x = x;
-	viewport.y = framebufferHeight - y - height;
+	viewport.y = y;
 	viewport.width = width;
 	viewport.height = height;
 	viewport.minDepth = 0.0f;
 	viewport.maxDepth = 1.0f;
 
 	VkRect2D scissor = { };
-	scissor.offset.x = x;
-	scissor.offset.y = framebufferHeight - y - height;
-	scissor.extent.width = width;
-	scissor.extent.height = height;
+	scissor.offset.x = 0;
+	scissor.offset.y = 0;
+	scissor.extent.width = framebufferWidth;
+	scissor.extent.height = framebufferHeight;
 
-	if (scissor.offset.x < 0)
-	{
-		scissor.extent.height += scissor.offset.x;
-		scissor.offset.x = 0;
-	}
-	if (scissor.offset.y < 0)
-	{
-		scissor.extent.height += scissor.offset.y;
-		scissor.offset.y = 0;
-	}
+	RenderPassBegin beginInfo;
+	beginInfo.setRenderPass(passSetup->RenderPass.get());
+	beginInfo.setRenderArea(0, 0, framebufferWidth, framebufferHeight);
+	beginInfo.setFramebuffer(framebuffer);
+	beginInfo.addClearColor(0.0f, 0.0f, 0.0f, 1.0f);
 
 	VkBuffer vertexBuffers[] = { static_cast<VKVertexBuffer*>(screen->mVertexData->GetBufferObjects().first)->mBuffer->buffer };
 	VkDeviceSize offsets[] = { 0 };
@@ -492,7 +457,7 @@ VulkanDescriptorSet *VkPostprocess::GetInput(VkPPRenderPassSetup *passSetup, con
 	return mFrameDescriptorSets.back().get();
 }
 
-VulkanFramebuffer *VkPostprocess::GetOutput(VkPPRenderPassSetup *passSetup, const PPOutput &output, int &framebufferHeight)
+VulkanFramebuffer *VkPostprocess::GetOutput(VkPPRenderPassSetup *passSetup, const PPOutput &output, int &framebufferWidth, int &framebufferHeight)
 {
 	auto fb = GetVulkanFrameBuffer();
 
@@ -528,6 +493,7 @@ VulkanFramebuffer *VkPostprocess::GetOutput(VkPPRenderPassSetup *passSetup, cons
 		framebuffer->SetDebugName(tex.debugname);
 	}
 
+	framebufferWidth = w;
 	framebufferHeight = h;
 	return framebuffer.get();
 }

src/rendering/vulkan/renderer/vk_postprocess.h

@@ -69,10 +69,10 @@ private:
 	FString LoadShaderCode(const FString &lumpname, const FString &defines, int version);
 	void RenderEffect(const FString &name);
 	void NextEye(int eyeCount);
-	void RenderScreenQuad(VkPPRenderPassSetup *passSetup, VulkanDescriptorSet *descriptorSet, VulkanFramebuffer *framebuffer, int framebufferHeight, int x, int y, int width, int height, const void *pushConstants, uint32_t pushConstantsSize);
+	void RenderScreenQuad(VkPPRenderPassSetup *passSetup, VulkanDescriptorSet *descriptorSet, VulkanFramebuffer *framebuffer, int framebufferWidth, int framebufferHeight, int x, int y, int width, int height, const void *pushConstants, uint32_t pushConstantsSize);
 
 	VulkanDescriptorSet *GetInput(VkPPRenderPassSetup *passSetup, const TArray<PPTextureInput> &textures);
-	VulkanFramebuffer *GetOutput(VkPPRenderPassSetup *passSetup, const PPOutput &output, int &framebufferHeight);
+	VulkanFramebuffer *GetOutput(VkPPRenderPassSetup *passSetup, const PPOutput &output, int &framebufferWidth, int &framebufferHeight);
 	VulkanSampler *GetSampler(PPFilterMode filter, PPWrapMode wrap);
 
 	struct TextureImage

src/rendering/vulkan/renderer/vk_renderpass.cpp

@@ -52,7 +52,7 @@ void VkRenderPassManager::BeginRenderPass(const VkRenderPassKey &key, VulkanComm
 		builder.setRenderPass(passSetup->RenderPass.get());
 		builder.setSize(mRenderTargetWidth, mRenderTargetHeight);
 		builder.addAttachment(mRenderTargetView->view);
-		if (key.DepthTest || key.DepthWrite || key.StencilTest)
+		if (key.UsesDepthStencil())
 			builder.addAttachment(buffers->SceneDepthStencilView.get());
 		framebuffer = builder.create(GetVulkanFrameBuffer()->device);
 		framebuffer->SetDebugName("VkRenderPassSetup.Framebuffer");
@@ -62,6 +62,8 @@ void VkRenderPassManager::BeginRenderPass(const VkRenderPassKey &key, VulkanComm
 	beginInfo.setRenderPass(passSetup->RenderPass.get());
 	beginInfo.setRenderArea(0, 0, buffers->GetWidth(), buffers->GetHeight());
 	beginInfo.setFramebuffer(framebuffer.get());
+	beginInfo.addClearColor(screen->mSceneClearColor[0], screen->mSceneClearColor[1], screen->mSceneClearColor[2], screen->mSceneClearColor[3]);
+	beginInfo.addClearDepthStencil(1.0f, 0);
 	cmdbuffer->beginRenderPass(beginInfo);
 	cmdbuffer->bindPipeline(VK_PIPELINE_BIND_POINT_GRAPHICS, passSetup->Pipeline.get());
 }
@@ -182,19 +184,19 @@ void VkRenderPassSetup::CreateRenderPass(const VkRenderPassKey &key)
 	RenderPassBuilder builder;
 	builder.addAttachment(
 		VK_FORMAT_R16G16B16A16_SFLOAT, (VkSampleCountFlagBits)key.Samples,
-		VK_ATTACHMENT_LOAD_OP_LOAD, VK_ATTACHMENT_STORE_OP_STORE,
+		(key.ClearTargets & CT_Color) ? VK_ATTACHMENT_LOAD_OP_CLEAR : VK_ATTACHMENT_LOAD_OP_LOAD, VK_ATTACHMENT_STORE_OP_STORE,
 		VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL);
-	if (key.DepthTest || key.DepthWrite || key.StencilTest)
+	if (key.UsesDepthStencil())
 	{
 		builder.addDepthStencilAttachment(
 			buffers->SceneDepthStencilFormat, buffers->GetSceneSamples(),
-			VK_ATTACHMENT_LOAD_OP_LOAD, VK_ATTACHMENT_STORE_OP_STORE,
-			VK_ATTACHMENT_LOAD_OP_LOAD, VK_ATTACHMENT_STORE_OP_STORE,
+			(key.ClearTargets & CT_Depth) ? VK_ATTACHMENT_LOAD_OP_CLEAR : VK_ATTACHMENT_LOAD_OP_LOAD, VK_ATTACHMENT_STORE_OP_STORE,
+			(key.ClearTargets & CT_Stencil) ? VK_ATTACHMENT_LOAD_OP_CLEAR : VK_ATTACHMENT_LOAD_OP_LOAD, VK_ATTACHMENT_STORE_OP_STORE,
 			VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL, VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL);
 	}
 	builder.addSubpass();
 	builder.addSubpassColorAttachmentRef(0, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL);
-	if (key.DepthTest || key.DepthWrite || key.StencilTest)
+	if (key.UsesDepthStencil())
 	{
 		builder.addSubpassDepthStencilAttachmentRef(1, VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL);
 		builder.addExternalSubpassDependency(

src/rendering/vulkan/renderer/vk_renderpass.h

@@ -4,6 +4,7 @@
 #include "vulkan/system/vk_objects.h"
 #include "r_data/renderstyle.h"
 #include "hwrenderer/data/buffers.h"
+#include "hwrenderer/scene/hw_renderstate.h"
 #include <string.h>
 #include <map>
 
@@ -28,6 +29,9 @@ public:
 	int VertexFormat;
 	int DrawType;
 	int Samples;
+	int ClearTargets;
+
+	bool UsesDepthStencil() const { return DepthTest || DepthWrite || StencilTest || (ClearTargets & (CT_Depth | CT_Stencil)); }
 
 	bool operator<(const VkRenderPassKey &other) const { return memcmp(this, &other, sizeof(VkRenderPassKey)) < 0; }
 	bool operator==(const VkRenderPassKey &other) const { return memcmp(this, &other, sizeof(VkRenderPassKey)) == 0; }

src/rendering/vulkan/renderer/vk_renderstate.cpp

@@ -118,74 +118,8 @@ void VkRenderState::EnableClipDistance(int num, bool state)
 
 void VkRenderState::Clear(int targets)
 {
-	// We need an active render pass, and it must have a depth attachment..
-	bool lastDepthTest = mDepthTest;
-	bool lastDepthWrite = mDepthWrite;
-	if (targets & (CT_Depth | CT_Stencil))
-	{
-		mDepthTest = true;
-		mDepthWrite = true;
-	}
-	Apply(DT_TriangleStrip);
-	mDepthTest = lastDepthTest;
-	mDepthWrite = lastDepthWrite;
-
-	VkClearAttachment attachments[2] = { };
-	VkClearRect rects[2] = { };
-
-	for (int i = 0; i < 2; i++)
-	{
-		rects[i].layerCount = 1;
-		if (mScissorWidth >= 0)
-		{
-			rects[0].rect.offset.x = mScissorX;
-			rects[0].rect.offset.y = GetVulkanFrameBuffer()->GetBuffers()->GetHeight() - mScissorY - mViewportHeight;
-			rects[0].rect.extent.width = mScissorWidth;
-			rects[0].rect.extent.height = mScissorHeight;
-
-			if (rects[0].rect.offset.x < 0)
-			{
-				rects[0].rect.extent.height += rects[0].rect.offset.x;
-				rects[0].rect.offset.x = 0;
-			}
-			if (rects[0].rect.offset.y < 0)
-			{
-				rects[0].rect.extent.height += rects[0].rect.offset.y;
-				rects[0].rect.offset.y = 0;
-			}
-		}
-		else
-		{
-			rects[0].rect.offset.x = 0;
-			rects[0].rect.offset.y = 0;
-			rects[0].rect.extent.width = SCREENWIDTH;
-			rects[0].rect.extent.height = SCREENHEIGHT;
-		}
-	}
-
-	if (targets & CT_Depth)
-	{
-		attachments[1].aspectMask |= VK_IMAGE_ASPECT_DEPTH_BIT;
-		attachments[1].clearValue.depthStencil.depth = 1.0f;
-	}
-	if (targets & CT_Stencil)
-	{
-		attachments[1].aspectMask |= VK_IMAGE_ASPECT_STENCIL_BIT;
-		attachments[1].clearValue.depthStencil.stencil = 0;
-	}
-	if (targets & CT_Color)
-	{
-		attachments[0].aspectMask |= VK_IMAGE_ASPECT_COLOR_BIT;
-		for (int i = 0; i < 4; i++)
-			attachments[0].clearValue.color.float32[i] = screen->mSceneClearColor[i];
-	}
-
-	if ((targets & CT_Color) && (targets & CT_Stencil) && (targets & CT_Depth))
-		mCommandBuffer->clearAttachments(2, attachments, 2, rects);
-	else if (targets & (CT_Stencil | CT_Depth))
-		mCommandBuffer->clearAttachments(1, attachments + 1, 1, rects + 1);
-	else if (targets & CT_Color)
-		mCommandBuffer->clearAttachments(1, attachments, 1, rects);
+	mClearTargets = targets;
+	EndRenderPass();
 }
 
 void VkRenderState::EnableStencil(bool on)
@@ -259,6 +193,7 @@ void VkRenderState::ApplyRenderPass(int dt)
 
 	// Find a render pass that matches our state
 	VkRenderPassKey passKey;
+	passKey.ClearTargets = mRenderPassKey.ClearTargets | mClearTargets;
 	passKey.DrawType = dt;
 	passKey.VertexFormat = static_cast<VKVertexBuffer*>(mVertexBuffer)->VertexFormat;
 	passKey.RenderStyle = mRenderStyle;
@@ -305,8 +240,10 @@ void VkRenderState::ApplyRenderPass(int dt)
 
 	if (changingRenderPass)
 	{
+		passKey.ClearTargets = mClearTargets;
 		passManager->BeginRenderPass(passKey, mCommandBuffer);
 		mRenderPassKey = passKey;
+		mClearTargets = 0;
 	}
 }
 
@@ -325,30 +262,26 @@ void VkRenderState::ApplyScissor()
 	{
 		VkRect2D scissor;
 		auto buffers = GetVulkanFrameBuffer()->GetBuffers();
+		int targetWidth = buffers->GetWidth();
+		int targetHeight = buffers->GetHeight();
 		if (mScissorWidth >= 0)
 		{
-			scissor.offset.x = mScissorX;
-			scissor.offset.y = buffers->GetHeight() - mScissorY - mViewportHeight;
-			scissor.extent.width = mScissorWidth;
-			scissor.extent.height = mScissorHeight;
+			int x0 = clamp(mScissorX, 0, targetWidth);
+			int y0 = clamp(mScissorY, 0, targetHeight);
+			int x1 = clamp(mScissorX + mScissorWidth, 0, targetWidth);
+			int y1 = clamp(mScissorY + mScissorHeight, 0, targetHeight);
 
-			if (scissor.offset.x < 0)
-			{
-				scissor.extent.height += scissor.offset.x;
-				scissor.offset.x = 0;
-			}
-			if (scissor.offset.y < 0)
-			{
-				scissor.extent.height += scissor.offset.y;
-				scissor.offset.y = 0;
-			}
+			scissor.offset.x = x0;
+			scissor.offset.y = y0;
+			scissor.extent.width = x1 - x0;
+			scissor.extent.height = y1 - y0;
 		}
 		else
 		{
 			scissor.offset.x = 0;
 			scissor.offset.y = 0;
-			scissor.extent.width = buffers->GetWidth();
-			scissor.extent.height = buffers->GetHeight();
+			scissor.extent.width = targetWidth;
+			scissor.extent.height = targetHeight;
 		}
 		mCommandBuffer->setScissor(0, 1, &scissor);
 		mScissorChanged = false;
@@ -364,7 +297,7 @@ void VkRenderState::ApplyViewport()
 		if (mViewportWidth >= 0)
 		{
 			viewport.x = (float)mViewportX;
-			viewport.y = (float)buffers->GetHeight() - mViewportY - mViewportHeight;
+			viewport.y = (float)mViewportY;
 			viewport.width = (float)mViewportWidth;
 			viewport.height = (float)mViewportHeight;
 		}

src/rendering/vulkan/renderer/vk_renderstate.h

@@ -63,6 +63,7 @@ protected:
 	bool mDepthClamp = true;
 	VulkanCommandBuffer *mCommandBuffer = nullptr;
 	VkRenderPassKey mRenderPassKey = {};
+	int mClearTargets = 0;
 	bool mNeedApply = true;
 
 	int mScissorX = 0, mScissorY = 0, mScissorWidth = -1, mScissorHeight = -1;

wadsrc/static/shaders/glsl/main.vp

@@ -97,7 +97,6 @@ void main()
 
 	#ifdef VULKAN_COORDINATE_SYSTEM
 	gl_Position.z = (gl_Position.z + gl_Position.w) / 2.0;
-	gl_Position.y = -gl_Position.y;
 	#endif
 
 	if (uClipHeightDirection != 0.0) // clip planes used for reflective flats

wadsrc/static/shaders/glsl/present.fp

@@ -29,5 +29,5 @@ vec4 Dither(vec4 c)
 
 void main()
 {
-	FragColor = Dither(ApplyGamma(texture(InputTexture, TexCoord * UVScale)));
+	FragColor = Dither(ApplyGamma(texture(InputTexture, UVOffset + TexCoord * UVScale)));
 }

wadsrc/static/shaders/glsl/present_checker3d.fp

@@ -23,11 +23,11 @@ void main()
 		) % 2 == 0;
 	vec4 inputColor;
 	if (isLeftEye) {
-		inputColor = texture(LeftEyeTexture, TexCoord * UVScale);
+		inputColor = texture(LeftEyeTexture, UVOffset + TexCoord * UVScale);
 	}
 	else {
 		// inputColor = vec4(0, 1, 0, 1);
-		inputColor = texture(RightEyeTexture, TexCoord * UVScale);
+		inputColor = texture(RightEyeTexture, UVOffset + TexCoord * UVScale);
 	}
 	FragColor = ApplyGamma(inputColor);
 }

wadsrc/static/shaders/glsl/present_column3d.fp

@@ -21,11 +21,11 @@ void main()
 		) % 2 == 0;
 	vec4 inputColor;
 	if (isLeftEye) {
-		inputColor = texture(LeftEyeTexture, TexCoord * UVScale);
+		inputColor = texture(LeftEyeTexture, UVOffset + TexCoord * UVScale);
 	}
 	else {
 		// inputColor = vec4(0, 1, 0, 1);
-		inputColor = texture(RightEyeTexture, TexCoord * UVScale);
+		inputColor = texture(RightEyeTexture, UVOffset + TexCoord * UVScale);
 	}
 	FragColor = ApplyGamma(inputColor);
 }

wadsrc/static/shaders/glsl/present_row3d.fp

@@ -21,11 +21,11 @@ void main()
 		) % 2 == 0;
 	vec4 inputColor;
 	if (isLeftEye) {
-		inputColor = texture(LeftEyeTexture, TexCoord * UVScale);
+		inputColor = texture(LeftEyeTexture, UVOffset + TexCoord * UVScale);
 	}
 	else {
 		// inputColor = vec4(0, 1, 0, 1);
-		inputColor = texture(RightEyeTexture, TexCoord * UVScale);
+		inputColor = texture(RightEyeTexture, UVOffset + TexCoord * UVScale);
 	}
 	FragColor = ApplyGamma(inputColor);
 }