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r300g: if no colorbuffers are set, disable blending and set the color mask to 0

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This seems to be the only way to disable the first colorbuffer.
This commit is contained in:
Marek Olšák 2009-12-14 05:29:12 +01:00 • committed by Corbin Simpson
parent cf85bf9cd0
commit a6d701d1c6
2 changed files with 11 additions and 3 deletions
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13
src/gallium/drivers/r300/r300_emit.c
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@ -41,9 +41,16 @@ void r300_emit_blend_state(struct r300_context* r300,
CS_LOCALS(r300);
BEGIN_CS(8);
OUT_CS_REG_SEQ(R300_RB3D_CBLEND, 3);
OUT_CS(blend->blend_control);
OUT_CS(blend->alpha_blend_control);
OUT_CS(blend->color_channel_mask);
if (r300->framebuffer_state.nr_cbufs) {
OUT_CS(blend->blend_control);
OUT_CS(blend->alpha_blend_control);
OUT_CS(blend->color_channel_mask);
} else {
OUT_CS(0);
OUT_CS(0);
OUT_CS(0);
/* XXX also disable fastfill here once it's supported */
}
OUT_CS_REG(R300_RB3D_ROPCNTL, blend->rop);
OUT_CS_REG(R300_RB3D_DITHER_CTL, blend->dither);
END_CS;

1
src/gallium/drivers/r300/r300_state.c
View file

@ -339,6 +339,7 @@ static void
r300->dirty_state |= R300_NEW_SCISSOR;
}
r300->dirty_state |= R300_NEW_FRAMEBUFFERS;
r300->dirty_state |= R300_NEW_BLEND;
}
/* Create fragment shader state. */