[Bf-blender-cvs] [7f404f1c742] master: Fix T74395: Box interpolation does not support repeat extrapolation

[Jacques Lucke]

Commit: 7f404f1c74294c72cb66a708b26841b5ed6a84fb
Author: Jacques Lucke
Date:   Sun Mar 8 14:43:06 2020 +0100
Branches: master
https://developer.blender.org/rB7f404f1c74294c72cb66a708b26841b5ed6a84fb

Fix T74395: Box interpolation does not support repeat extrapolation

Reviewers: fclem

Differential Revision: https://developer.blender.org/D7009

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M	source/blender/gpu/shaders/material/gpu_shader_material_tex_image.glsl

===================================================================

diff --git a/source/blender/gpu/shaders/material/gpu_shader_material_tex_image.glsl b/source/blender/gpu/shaders/material/gpu_shader_material_tex_image.glsl
index 4633e59fde1..c39bec8ac64 100644
--- a/source/blender/gpu/shaders/material/gpu_shader_material_tex_image.glsl
+++ b/source/blender/gpu/shaders/material/gpu_shader_material_tex_image.glsl
@@ -183,21 +183,21 @@ void tex_box_sample_nearest(
   if (N.x < 0.0) {
     uv.x = 1.0 - uv.x;
   }
-  ivec2 pix = ivec2(uv.xy * textureSize(ima, 0).xy);
+  ivec2 pix = ivec2(fract(uv.xy) * textureSize(ima, 0).xy);
   color1 = texelFetch(ima, pix, 0);
   /* Y projection */
   uv = texco.xz;
   if (N.y > 0.0) {
     uv.x = 1.0 - uv.x;
   }
-  pix = ivec2(uv.xy * textureSize(ima, 0).xy);
+  pix = ivec2(fract(uv.xy) * textureSize(ima, 0).xy);
   color2 = texelFetch(ima, pix, 0);
   /* Z projection */
   uv = texco.yx;
   if (N.z > 0.0) {
     uv.x = 1.0 - uv.x;
   }
-  pix = ivec2(uv.xy * textureSize(ima, 0).xy);
+  pix = ivec2(fract(uv.xy) * textureSize(ima, 0).xy);
   color3 = texelFetch(ima, pix, 0);
 }