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author couriersud <couriersud@arcor.de>2015-02-26 01:40:18 +0100
committer couriersud <couriersud@arcor.de>2015-02-26 01:40:18 +0100
commiteb8144a3bb8f5d443b5062b13e3e18b6b8e8c43c (patch)
tree0dbb6487e5cc7db623f2d9acd9d2db3efa792aca /src/osd/modules/opengl/shader/glsl_plain_rgb32_lut.fsh
parent2c2994aeb52b700c206ca6c94513a92601097bdb (diff)
Moved opengl related stuff to modules/opengl
Diffstat (limited to 'src/osd/modules/opengl/shader/glsl_plain_rgb32_lut.fsh')
-rw-r--r--src/osd/modules/opengl/shader/glsl_plain_rgb32_lut.fsh28
1 files changed, 28 insertions, 0 deletions
diff --git a/src/osd/modules/opengl/shader/glsl_plain_rgb32_lut.fsh b/src/osd/modules/opengl/shader/glsl_plain_rgb32_lut.fsh
new file mode 100644
index 00000000000..14c05aaa844
--- /dev/null
+++ b/src/osd/modules/opengl/shader/glsl_plain_rgb32_lut.fsh
@@ -0,0 +1,28 @@
+
+#pragma optimize (on)
+#pragma debug (off)
+
+uniform sampler2D color_texture;
+uniform sampler2D colortable_texture;
+uniform vec2 colortable_sz; // orig size for full bgr
+uniform vec2 colortable_pow2_sz; // orig size for full bgr
+
+void main()
+{
+ vec4 color_tex;
+ vec2 color_map_coord;
+ float colortable_scale = (colortable_sz.x/3.0) / colortable_pow2_sz.x;
+
+ // normalized texture coordinates ..
+ color_tex = texture2D(color_texture, gl_TexCoord[0].st) * ((colortable_sz.x/3.0)-1.0)/colortable_pow2_sz.x;// lookup space
+
+ color_map_coord.x = color_tex.b;
+ gl_FragColor.b = texture2D(colortable_texture, color_map_coord).b;
+
+ color_map_coord.x = color_tex.g + colortable_scale;
+ gl_FragColor.g = texture2D(colortable_texture, color_map_coord).g;
+
+ color_map_coord.x = color_tex.r + 2.0 * colortable_scale;
+ gl_FragColor.r = texture2D(colortable_texture, color_map_coord).r;
+}
+