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[PATCH] fix alpha blending state 

Signed-off-by: Keith Packard <keithp@neko.keithp.com>
This commit is contained in:
Wang Zhenyu 2006-11-29 17:14:55 +08:00 committed by Keith Packard
parent 79018bb47c
commit 01bfa4fa6f
1 changed files with 12 additions and 7 deletions
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19
src/i965_exa_render.c
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@ -562,21 +562,26 @@ ErrorF("i965 prepareComposite\n");
cc_state->cc0.stencil_enable = 0; /* disable stencil */
cc_state->cc2.depth_test = 0; /* disable depth test */
cc_state->cc2.logicop_enable = 0; /* disable logic op */
cc_state->cc3.ia_blend_enable = 0; /* blend alpha just like colors */
cc_state->cc3.ia_blend_enable = 1; /* blend alpha just like colors */
cc_state->cc3.blend_enable = 1; /* enable color blend */
cc_state->cc3.alpha_test = 0; /* disable alpha test */
cc_state->cc4.cc_viewport_state_offset = (state_base_offset + cc_viewport_offset) >> 5;
cc_state->cc5.dither_enable = 0; /* disable dither */
// cc_state->cc5.logicop_func = 0xc; /* COPY */
// cc_state->cc5.statistics_enable = 1;
// cc_state->cc5.ia_blend_function = BRW_BLENDFUNCTION_ADD;
// cc_state->cc5.ia_src_blend_factor = BRW_BLENDFACTOR_ONE;
// cc_state->cc5.ia_dest_blend_factor = BRW_BLENDFACTOR_ONE;
cc_state->cc6.blend_function = BRW_BLENDFUNCTION_ADD;
cc_state->cc5.logicop_func = 0xc; /* COPY */
cc_state->cc5.statistics_enable = 1;
cc_state->cc5.ia_blend_function = BRW_BLENDFUNCTION_ADD;
I965GetBlendCntl(op, pMaskPicture, pDstPicture->format,
&src_blend, &dst_blend);
/* XXX: alpha blend factor should be same as color, but check
for CA case in future */
cc_state->cc5.ia_src_blend_factor = src_blend;
cc_state->cc5.ia_dest_blend_factor = dst_blend;
cc_state->cc6.blend_function = BRW_BLENDFUNCTION_ADD;
cc_state->cc6.src_blend_factor = src_blend;
cc_state->cc6.dest_blend_factor = dst_blend;
cc_state->cc6.clamp_post_alpha_blend = 1;
cc_state->cc6.clamp_pre_alpha_blend = 1;
cc_state->cc6.clamp_range = 0; /* clamp range [0,1] */
/* Upload system kernel */
memcpy (sip_kernel, sip_kernel_static, sizeof (sip_kernel_static));