diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/gallium/drivers/r300/r300_state.c | 41 |
1 files changed, 32 insertions, 9 deletions
diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c index 88cb9af6fb7..3cef285dee8 100644 --- a/src/gallium/drivers/r300/r300_state.c +++ b/src/gallium/drivers/r300/r300_state.c @@ -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. */ |