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st/mesa: simplify a bit of the previous patch

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Grrr, this was supposed to go in the previous commit.
This commit is contained in:
Brian Paul 2011-04-15 08:32:12 -06:00
parent 6e9c7c4c11
commit 2c57caa893
1 changed files with 8 additions and 5 deletions
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13
src/mesa/state_tracker/st_cb_readpixels.c
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@ -211,9 +211,11 @@ st_fast_readpixels(struct gl_context *ctx, struct st_renderbuffer *strb,
if (strb->format == PIPE_FORMAT_B8G8R8A8_UNORM) {
alphaORoperand = 0;
} else if (strb->format == PIPE_FORMAT_B8G8R8X8_UNORM ) {
}
else if (strb->format == PIPE_FORMAT_B8G8R8X8_UNORM ) {
alphaORoperand = 0xff;
} else {
}
else {
return GL_FALSE;
}
@ -312,9 +314,10 @@ st_fast_readpixels(struct gl_context *ctx, struct st_renderbuffer *strb,
const GLubyte *src = map + y * trans->stride;
memcpy(dst, src, 4 * width);
if (alphaORoperand) {
for (col = 0; col < width; col++) {
dst[col*4+3] |= alphaORoperand;
}
assert(alphaORoperand == 0xff);
for (col = 0; col < width; col++) {
dst[col*4+3] = 0xff;
}
}
dst += dstStride;
y += dy;