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mesa/st: code cleanups for new blend functionality

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minor code changes, style and comment fixes
This commit is contained in:
Roland Scheidegger 2010-01-26 15:35:31 +01:00
parent df4395198c
commit 9bc80ff174
1 changed files with 23 additions and 9 deletions
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32
src/mesa/state_tracker/st_atom_blend.c
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@ -152,17 +152,33 @@ translate_logicop(GLenum logicop)
}
}
static boolean
colormask_perrt(GLcontext *ctx)
/**
* Figure out if colormasks are different per rt.
*/
static GLboolean
colormask_per_rt(GLcontext *ctx)
{
/* XXX this is ugly beyond belief */
/* a bit suboptimal have to compare lots of values */
unsigned i;
for (i = 1; i < ctx->Const.MaxDrawBuffers; i++) {
if (!TEST_EQ_4V(ctx->Color.ColorMask[0], ctx->Color.ColorMask[i])) {
return true;
if (memcmp(ctx->Color.ColorMask[0], ctx->Color.ColorMask[i], 4)) {
return GL_TRUE;
}
}
return false;
return GL_FALSE;
}
/**
* Figure out if blend enables are different per rt.
*/
static GLboolean
blend_per_rt(GLcontext *ctx)
{
if (ctx->Color.BlendEnabled &&
(ctx->Color.BlendEnabled != ((1 << ctx->Const.MaxDrawBuffers) - 1))) {
return GL_TRUE;
}
return GL_FALSE;
}
static void
@ -174,9 +190,7 @@ update_blend( struct st_context *st )
memset(blend, 0, sizeof(*blend));
if ((st->ctx->Color.BlendEnabled &&
(st->ctx->Color.BlendEnabled != ((1 << st->ctx->Const.MaxDrawBuffers) - 1))) ||
colormask_perrt(st->ctx)) {
if (blend_per_rt(st->ctx) || colormask_per_rt(st->ctx)) {
num_state = st->ctx->Const.MaxDrawBuffers;
blend->independent_blend_enable = 1;
}