- fix wrong clamp mode used in OpenGL

- fix sampler array size on Vulkan

src/rendering/gl/renderer/gl_renderbuffers.cpp

@@ -868,7 +868,7 @@ void GLPPRenderState::Draw()
 
 		const PPTextureInput &input = Textures[index];
 		int filter = (input.Filter == PPFilterMode::Nearest) ? GL_NEAREST : GL_LINEAR;
-		int wrap = (input.Wrap == PPWrapMode::Clamp) ? GL_CLAMP : GL_REPEAT;
+		int wrap = (input.Wrap == PPWrapMode::Clamp) ? GL_CLAMP_TO_EDGE : GL_REPEAT;
 
 		switch (input.Type)
 		{

src/rendering/vulkan/renderer/vk_postprocess.cpp

@@ -287,7 +287,7 @@ void VkPostprocess::RenderBuffersReset()
 
 VulkanSampler *VkPostprocess::GetSampler(PPFilterMode filter, PPWrapMode wrap)
 {
-	int index = (((int)filter) << 2) | (int)wrap;
+	int index = (((int)filter) << 1) | (int)wrap;
 	auto &sampler = mSamplers[index];
 	if (sampler)
 		return sampler.get();

src/rendering/vulkan/renderer/vk_postprocess.h

@@ -75,7 +75,7 @@ private:
 
 	VulkanSampler *GetSampler(PPFilterMode filter, PPWrapMode wrap);
 
-	std::array<std::unique_ptr<VulkanSampler>, 16> mSamplers;
+	std::array<std::unique_ptr<VulkanSampler>, 4> mSamplers;
 	std::map<VkPPRenderPassKey, std::unique_ptr<VkPPRenderPassSetup>> mRenderPassSetup;
 	std::unique_ptr<VulkanDescriptorPool> mDescriptorPool;
 	int mCurrentPipelineImage = 0;