r300/compiler: fix LIT in VS

This fixes broken rendering of trees in ETQW. The trees still disappear
for an unknown reason when they are close.

Broken since:
2ff9d4474bdf5f05852ad4963d0b597d20743678
r300/compiler: make lowering passes possibly use up to two less temps

NOTE: This is a candidate for the 7.10 branch.

diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_program_alu.c b/src/mesa/drivers/dri/r300/compiler/radeon_program_alu.c
index 58977a40c7c2ca71a4351c8b06bd786a848e48eb..c8063171b81e7c95ed93b8f727a53553d21fee38 100644 (file)
--- a/src/mesa/drivers/dri/r300/compiler/radeon_program_alu.c
+++ b/src/mesa/drivers/dri/r300/compiler/radeon_program_alu.c
@@ -689,11 +689,12 @@ static void transform_r300_vertex_fix_LIT(struct radeon_compiler* c,
                                                         &constant_swizzle);
 
        /* MOV dst, src */
+       dst.WriteMask = RC_MASK_XYZW;
        emit1(c, inst->Prev, RC_OPCODE_MOV, 0,
                dst,
                inst->U.I.SrcReg[0]);
 
-       /* MAX dst.z, src, 0.00...001 */
+       /* MAX dst.y, src, 0.00...001 */
        emit2(c, inst->Prev, RC_OPCODE_MAX, 0,
                dstregtmpmask(dst.Index, RC_MASK_Y),
                srcreg(RC_FILE_TEMPORARY, dst.Index),