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i965: Fix gl_FragCoord.z setup on gen6. 

Fixes glsl-bug-22603.
This commit is contained in:
Eric Anholt 2010-12-13 13:37:54 -08:00
parent 5fbd8da8df
commit 036c817f77
1 changed files with 7 additions and 2 deletions
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9
src/mesa/drivers/dri/i965/brw_fs.cpp
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@ -474,8 +474,13 @@ fs_visitor::emit_fragcoord_interpolation(ir_variable *ir)
wpos.reg_offset++;
/* gl_FragCoord.z */
emit(fs_inst(FS_OPCODE_LINTERP, wpos, this->delta_x, this->delta_y,
interp_reg(FRAG_ATTRIB_WPOS, 2)));
if (intel->gen >= 6) {
emit(fs_inst(BRW_OPCODE_MOV, wpos,
fs_reg(brw_vec8_grf(c->source_depth_reg, 0))));
} else {
emit(fs_inst(FS_OPCODE_LINTERP, wpos, this->delta_x, this->delta_y,
interp_reg(FRAG_ATTRIB_WPOS, 2)));
}
wpos.reg_offset++;
/* gl_FragCoord.w: Already set up in emit_interpolation */