From f68f94c2bc950405d4c91a1e5582a35ff4b15bdf Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Wed, 7 Jan 2009 18:45:49 -0700 Subject: [PATCH] i965: allow gl_FragData[0] usage when there's only one color buffer If gl_FragData[0] is written but not gl_FragCOlor, use the former. --- src/mesa/drivers/dri/i965/brw_wm_fp.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/src/mesa/drivers/dri/i965/brw_wm_fp.c b/src/mesa/drivers/dri/i965/brw_wm_fp.c index cb1e40097bd..f4583877aa5 100644 --- a/src/mesa/drivers/dri/i965/brw_wm_fp.c +++ b/src/mesa/drivers/dri/i965/brw_wm_fp.c @@ -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); -- 2.30.2