From 95fcfecbec81483cfd534c1d4f0ef3479dd2aadc Mon Sep 17 00:00:00 2001
From: Martin Piatka <piatka@cesnet.cz>
Date: Mon, 6 Feb 2023 15:36:51 +0100
Subject: [PATCH] vulkan: RGB10A2_conv: Use unnormalized integer coords

closes GH-291
---
 .../vulkan_shaders/RGB10A2_conv.comp.spv      | Bin 2960 -> 2960 bytes
 .../vulkan/shaders/RGB10A2_conv.comp          |   4 +---
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/share/ultragrid/vulkan_shaders/RGB10A2_conv.comp.spv b/share/ultragrid/vulkan_shaders/RGB10A2_conv.comp.spv
index 46d178118a43e9e68b4a5eca7b0906f57dbbf095..244ca213dd2d1aeab995314a9c0934a203b15c0b 100644
GIT binary patch
delta 82
zcmbOrK0%z5nMs+Qfq{{Mdn2bZ%Vryv6c$q;pTP@=Ie|EZfrY^pNP7dZClJRouroLT
TX&<N<NF5UpOK(2PaheGLi?Rul

delta 76
zcmbOrK0%z5nMs+Qfq{{MYa^#J3#T>%3xhrb1B3TwRhDcPRRbW?3y6(?ID&zl!3jwF
T0I??!gT$GD*n9I)j?+v4R)h&#

diff --git a/src/video_display/vulkan/shaders/RGB10A2_conv.comp b/src/video_display/vulkan/shaders/RGB10A2_conv.comp
index 03040c238..4440a5219 100644
--- a/src/video_display/vulkan/shaders/RGB10A2_conv.comp
+++ b/src/video_display/vulkan/shaders/RGB10A2_conv.comp
@@ -17,10 +17,8 @@ void main()
     if(pixelCoords.x >= image_size.width || pixelCoords.y >= image_size.height){
         return;
     }
-
-    vec2 textureCoords = vec2(float(pixelCoords.x) / image_size.width, float(pixelCoords.y) / image_size.height);
     
-    uvec4 x = texture(inputImage, textureCoords);
+    uvec4 x = texelFetch(inputImage, pixelCoords, 0);
     // RGBA in big endian representation
     // RRRRRRRR|RRGGGGGG|GGGGBBBB|BBBBBBAA