Changed descriptor type for compute shader image read, updated shaders

computeshader/computeshader.cpp

@@ -194,7 +194,7 @@ public:
 			VK_FORMAT_R8G8B8A8_UNORM, 
 			&textureColorMap,
 			false,
-			VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_STORAGE_BIT);
+			VK_IMAGE_USAGE_SAMPLED_BIT);
 	}
 
 	void buildCommandBuffers()
@@ -424,8 +424,10 @@ public:
 			vkTools::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 2),
 			// Graphics pipeline uses image samplers for display
 			vkTools::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 4),
-			// Compute pipeline uses storage images image loads and stores
-			vkTools::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, 2),
+			// Compute pipeline uses a sampled image for reading
+			vkTools::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE, 1),
+			// Compute pipelines uses a storage image to write result
+			vkTools::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, 1),
 		};
 
 		VkDescriptorPoolCreateInfo descriptorPoolInfo =
@@ -644,7 +646,7 @@ public:
 		std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings = {
 			// Binding 0 : Sampled image (read)
 			vkTools::initializers::descriptorSetLayoutBinding(
-				VK_DESCRIPTOR_TYPE_STORAGE_IMAGE,
+				VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE,
 				VK_SHADER_STAGE_COMPUTE_BIT,
 				0),
 			// Binding 1 : Sampled image (write)
@@ -705,7 +707,7 @@ public:
 			// Binding 0 : Sampled image (read)
 			vkTools::initializers::writeDescriptorSet(
 				computeDescriptorSet,
-				VK_DESCRIPTOR_TYPE_STORAGE_IMAGE,
+				VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE,
 				0,
 				&computeTexDescriptors[0]),
 			// Binding 1 : Sampled image (write)

data/shaders/computeshader/edgedetect.comp

@@ -4,7 +4,7 @@
 #extension GL_ARB_shading_language_420pack : enable
 
 layout (local_size_x = 16, local_size_y = 16) in;
-layout (binding = 0, rgba8) uniform image2D inputImage;
+layout (binding = 0, rgba8) uniform readonly image2D inputImage;
 layout (binding = 1, rgba8) uniform image2D resultImage;
 
 float conv(in float[9] kernel, in float[9] data, in float denom, in float offset) 

data/shaders/computeshader/emboss.comp

@@ -3,8 +3,8 @@
 #extension GL_ARB_separate_shader_objects : enable
 #extension GL_ARB_shading_language_420pack : enable
 
-layout (local_size_x =16, local_size_y = 16) in;
-layout (binding = 0, rgba8) uniform image2D inputImage;
+layout (local_size_x = 16, local_size_y = 16) in;
+layout (binding = 0, rgba8) uniform readonly image2D inputImage;
 layout (binding = 1, rgba8) uniform image2D resultImage;
 
 float conv(in float[9] kernel, in float[9] data, in float denom, in float offset) 

data/shaders/computeshader/sharpen.comp

@@ -3,8 +3,8 @@
 #extension GL_ARB_separate_shader_objects : enable
 #extension GL_ARB_shading_language_420pack : enable
 
-layout (local_size_x =16, local_size_y = 16) in;
-layout (binding = 0, rgba8) uniform image2D inputImage;
+layout (local_size_x = 16, local_size_y = 16) in;
+layout (binding = 0, rgba8) uniform readonly image2D inputImage;
 layout (binding = 1, rgba8) uniform image2D resultImage;
 
 float conv(in float[9] kernel, in float[9] data, in float denom, in float offset) 

data/shaders/computeshader/texture.vert

@@ -14,6 +14,11 @@ layout (binding = 0) uniform UBO
 
 layout (location = 0) out vec2 outUV;
 
+out gl_PerVertex
+{
+	vec4 gl_Position;
+};
+
 void main() 
 {
 	outUV = inUV;