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Composite cube logo against background color.
From: Kristian Høgsberg <krh@redhat.com>
---
plugins/cube.c | 17 +++++++++++++++++
1 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/plugins/cube.c b/plugins/cube.c
index 31edd5c..339d843 100644
--- a/plugins/cube.c
+++ b/plugins/cube.c
@@ -1162,11 +1162,28 @@ cubePaintTransformedScreen (CompScreen
if (cs->invert == 1 && s->size == 4 && cs->texture.name)
{
+ glTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
+
+ glTexEnvf (GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_INTERPOLATE);
+ glTexEnvf (GL_TEXTURE_ENV, GL_SOURCE0_RGB, GL_TEXTURE0);
+ glTexEnvf (GL_TEXTURE_ENV, GL_SOURCE1_RGB, GL_PRIMARY_COLOR);
+ glTexEnvf (GL_TEXTURE_ENV, GL_SOURCE2_RGB, GL_TEXTURE0);
+ glTexEnvf (GL_TEXTURE_ENV, GL_OPERAND0_RGB, GL_SRC_COLOR);
+ glTexEnvf (GL_TEXTURE_ENV, GL_OPERAND1_RGB, GL_SRC_COLOR);
+ glTexEnvf (GL_TEXTURE_ENV, GL_OPERAND2_RGB, GL_SRC_ALPHA);
+
+ glTexEnvf (GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_REPLACE);
+ glTexEnvf (GL_TEXTURE_ENV, GL_SOURCE0_ALPHA, GL_PREVIOUS);
+ glTexEnvf (GL_TEXTURE_ENV, GL_OPERAND0_ALPHA, GL_SRC_ALPHA);
+
enableTexture (s, &cs->texture, COMP_TEXTURE_FILTER_GOOD);
+
glTexCoordPointer (2, GL_FLOAT, 0, cs->tc);
glDrawArrays (GL_TRIANGLE_FAN, 0, cs->nvertices >> 1);
disableTexture (s, &cs->texture);
glDisableClientState (GL_TEXTURE_COORD_ARRAY);
+
+ glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
}
else
{
|
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