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r300g: fix blending default state + alpha separate.

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this makes the default state same as r300
This commit is contained in:
Dave Airlie 2009-10-11 19:12:24 +10:00
parent cbf46ed670
commit 3611d01a44
1 changed files with 32 additions and 9 deletions
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41
src/gallium/drivers/r300/r300_state.c
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@ -46,23 +46,46 @@ static void* r300_create_blend_state(struct pipe_context* pipe,
{
struct r300_blend_state* blend = CALLOC_STRUCT(r300_blend_state);
{
unsigned eqRGB = state->rgb_func;
unsigned srcRGB = state->rgb_src_factor;
unsigned dstRGB = state->rgb_dst_factor;
unsigned eqA = state->alpha_func;
unsigned srcA = state->alpha_src_factor;
unsigned dstA = state->alpha_dst_factor;
if (srcA != srcRGB ||
dstA != dstRGB ||
eqA != eqRGB) {
blend->alpha_blend_control =
r300_translate_blend_function(eqA) |
(r300_translate_blend_factor(srcA) <<
R300_SRC_BLEND_SHIFT) |
(r300_translate_blend_factor(dstA) <<
R300_DST_BLEND_SHIFT);
blend->blend_control |= R300_ALPHA_BLEND_ENABLE |
R300_SEPARATE_ALPHA_ENABLE;
} else {
blend->alpha_blend_control = R300_COMB_FCN_ADD_CLAMP |
(R300_BLEND_GL_ONE << R300_SRC_BLEND_SHIFT) |
(R300_BLEND_GL_ZERO << R300_DST_BLEND_SHIFT);
}
}
if (state->blend_enable) {
/* XXX for now, always do separate alpha...
* is it faster to do it with one reg? */
blend->blend_control = R300_ALPHA_BLEND_ENABLE |
R300_SEPARATE_ALPHA_ENABLE |
R300_READ_ENABLE |
blend->blend_control |= R300_READ_ENABLE |
r300_translate_blend_function(state->rgb_func) |
(r300_translate_blend_factor(state->rgb_src_factor) <<
R300_SRC_BLEND_SHIFT) |
(r300_translate_blend_factor(state->rgb_dst_factor) <<
R300_DST_BLEND_SHIFT);
blend->alpha_blend_control =
r300_translate_blend_function(state->alpha_func) |
(r300_translate_blend_factor(state->alpha_src_factor) <<
R300_SRC_BLEND_SHIFT) |
(r300_translate_blend_factor(state->alpha_dst_factor) <<
R300_DST_BLEND_SHIFT);
} else {
blend->blend_control =
R300_COMB_FCN_ADD_CLAMP |
(R300_BLEND_GL_ONE << R300_SRC_BLEND_SHIFT) |
(R300_BLEND_GL_ZERO << R300_DST_BLEND_SHIFT);
}
/* PIPE_LOGICOP_* don't need to be translated, fortunately. */