Mesa (master): progs/glsl: change samplers.c to better test sampler/ texture indexing

[Brian Paul]

Module: Mesa
Branch: master
Commit: f6d34c20585ae9b4fb07ec2f2850f04dc9a9bc29
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=f6d34c20585ae9b4fb07ec2f2850f04dc9a9bc29

Author: Brian Paul <brianp at vmware.com>
Date:   Wed Aug 26 11:53:25 2009 -0600

progs/glsl: change samplers.c to better test sampler/texture indexing

Now the left half is yellow and the right half is red, with the gradients
going in opposite directions.

---

 progs/glsl/samplers.c |   16 ++++++++++++----
 1 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/progs/glsl/samplers.c b/progs/glsl/samplers.c
index 113e5bb..87dad5d 100644
--- a/progs/glsl/samplers.c
+++ b/progs/glsl/samplers.c
@@ -211,10 +211,18 @@ InitTextures(void)
       for (y = 0; y < stripeSize; y++) {
          for (x = 0; x < size; x++) {
             GLint k = 4 * ((ypos + y) * size + x);
-            texImage[k + 0] = intensity;
-            texImage[k + 1] = intensity;
-            texImage[k + 2] = 0;
-            texImage[k + 3] = 255;
+            if (x < size / 2) {
+               texImage[k + 0] = intensity;
+               texImage[k + 1] = intensity;
+               texImage[k + 2] = 0;
+               texImage[k + 3] = 255;
+            }
+            else {
+               texImage[k + 0] = 255 - intensity;
+               texImage[k + 1] = 0;
+               texImage[k + 2] = 0;
+               texImage[k + 3] = 255;
+            }
          }
       }