Use FragCoord + texelFetch for blit shaders

Author: thr3343

src/main/resources/assets/vulkanmod/shaders/basic/blit/blit.fsh

@@ -2,12 +2,10 @@
 
 layout(binding = 0) uniform sampler2D DiffuseSampler;
 
-layout(location = 0) in vec2 texCoord;
-
 layout(location = 0) out vec4 fragColor;
 
 void main() {
-    vec4 color = texture(DiffuseSampler, texCoord);
+    vec4 color = texelFetch(DiffuseSampler, ivec2(gl_FragCoord.xy), 0);
 
     // blit final output of compositor into displayed back buffer
     fragColor = color;

src/main/resources/assets/vulkanmod/shaders/basic/blit/blit.vsh

@@ -1,11 +1,9 @@
 #version 450
 
 const vec4 pos[] = { vec4(-1, -1, 0, 1),  vec4(3, -1, 0, 1), vec4(-1, 3, 0, 1) };
-const vec2 uv[] = { vec2(0, 1),  vec2(2, 1), vec2(0, -1) };
 
 layout(location = 0) out vec2 outUV;
 
 void main() {
-    outUV = uv[gl_VertexIndex];
     gl_Position = pos[gl_VertexIndex];
 }

src/main/resources/assets/vulkanmod/shaders/minecraft/core/blit_screen/blit_screen.fsh

@@ -2,12 +2,10 @@
 
 layout(binding = 1) uniform sampler2D DiffuseSampler;
 
-layout(location = 0) in vec2 texCoord;
-
 layout(location = 0) out vec4 fragColor;
 
 void main() {
-    vec4 color = texture(DiffuseSampler, texCoord);
+    vec4 color = texelFetch(DiffuseSampler, ivec2(gl_FragCoord.xy), 0);
 
     // blit final output of compositor into displayed back buffer
     fragColor = color;

src/main/resources/assets/vulkanmod/shaders/minecraft/core/blit_screen/blit_screen.vsh

@@ -1,12 +1,10 @@
 #version 450
 
 layout(location = 0) in vec3 Position;
-layout(location = 1) in vec2 UV;
+//layout(location = 1) in vec2 UV;
+
 
-layout(location = 0) out vec2 texCoord;
 
 void main() {
     gl_Position = vec4(Position, 1.0);
-
-    texCoord = UV;
 }