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Composite cube logo against background color.
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From: Kristian Høgsberg <krh@redhat.com>
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---
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plugins/cube.c | 17 +++++++++++++++++
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1 files changed, 17 insertions(+), 0 deletions(-)
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diff --git a/plugins/cube.c b/plugins/cube.c
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Kristian Høgsberg |
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index b222685..0576b8d 100644
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--- a/plugins/cube.c
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+++ b/plugins/cube.c
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@@ -1204,11 +1204,28 @@ cubePaintTransformedScreen (CompScreen
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if (cs->invert == 1 && s->size == 4 && cs->texture.name)
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{
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+ glTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
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+
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+ glTexEnvf (GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_INTERPOLATE);
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+ glTexEnvf (GL_TEXTURE_ENV, GL_SOURCE0_RGB, GL_TEXTURE0);
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+ glTexEnvf (GL_TEXTURE_ENV, GL_SOURCE1_RGB, GL_PRIMARY_COLOR);
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+ glTexEnvf (GL_TEXTURE_ENV, GL_SOURCE2_RGB, GL_TEXTURE0);
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+ glTexEnvf (GL_TEXTURE_ENV, GL_OPERAND0_RGB, GL_SRC_COLOR);
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+ glTexEnvf (GL_TEXTURE_ENV, GL_OPERAND1_RGB, GL_SRC_COLOR);
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+ glTexEnvf (GL_TEXTURE_ENV, GL_OPERAND2_RGB, GL_SRC_ALPHA);
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+
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+ glTexEnvf (GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_REPLACE);
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+ glTexEnvf (GL_TEXTURE_ENV, GL_SOURCE0_ALPHA, GL_PREVIOUS);
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+ glTexEnvf (GL_TEXTURE_ENV, GL_OPERAND0_ALPHA, GL_SRC_ALPHA);
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+
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enableTexture (s, &cs->texture, COMP_TEXTURE_FILTER_GOOD);
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+
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glTexCoordPointer (2, GL_FLOAT, 0, cs->tc);
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glDrawArrays (GL_TRIANGLE_FAN, 0, cs->nvertices >> 1);
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disableTexture (s, &cs->texture);
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glDisableClientState (GL_TEXTURE_COORD_ARRAY);
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+
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+ glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
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}
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else
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{
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