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i965: allow gl_FragData[0] usage when there's only one color buffer

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If gl_FragData[0] is written but not gl_FragCOlor, use the former.
This commit is contained in:
Brian Paul 2009-01-07 18:45:49 -07:00
parent bc7d2c4f51
commit f68f94c2bc
1 changed files with 9 additions and 2 deletions
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11
src/mesa/drivers/dri/i965/brw_wm_fp.c
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@ -864,9 +864,9 @@ static void emit_fog( struct brw_wm_compile *c )
static void emit_fb_write( struct brw_wm_compile *c )
{
struct prog_src_register outcolor = src_reg(PROGRAM_OUTPUT, FRAG_RESULT_COLR);
struct prog_src_register payload_r0_depth = src_reg(PROGRAM_PAYLOAD, PAYLOAD_DEPTH);
struct prog_src_register outdepth = src_reg(PROGRAM_OUTPUT, FRAG_RESULT_DEPR);
struct prog_src_register outcolor;
GLuint i;
struct prog_instruction *inst, *last_inst;
@ -890,7 +890,14 @@ static void emit_fb_write( struct brw_wm_compile *c )
}
}
last_inst->Sampler |= 1; //eot
}else {
}
else {
/* if gl_FragData[0] is written, use it, else use gl_FragColor */
if (c->fp->program.Base.OutputsWritten & (1 << FRAG_RESULT_DATA0))
outcolor = src_reg(PROGRAM_OUTPUT, FRAG_RESULT_DATA0);
else
outcolor = src_reg(PROGRAM_OUTPUT, FRAG_RESULT_COLR);
inst = emit_op(c, WM_FB_WRITE, dst_mask(dst_undef(),0),
0, 0, 0, outcolor, payload_r0_depth, outdepth);
inst->Sampler = 1|(0<<1);