diff options
| -rw-r--r-- | src/mesa/program/ir_to_mesa.cpp | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/src/mesa/program/ir_to_mesa.cpp b/src/mesa/program/ir_to_mesa.cpp index bf2513d4748..7c1ae46ff33 100644 --- a/src/mesa/program/ir_to_mesa.cpp +++ b/src/mesa/program/ir_to_mesa.cpp @@ -2084,15 +2084,39 @@ ir_to_mesa_visitor::visit(ir_texture *ir) coord_dst.writemask = WRITEMASK_W; ir_to_mesa_emit_op1(ir, OPCODE_RCP, coord_dst, projector); + /* In the case where we have to project the coordinates "by hand," + * the shadow comparitor value must also be projected. + */ + ir_to_mesa_src_reg tmp_src = coord; + if (ir->shadow_comparitor) { + /* Slot the shadow value in as the second to last component of the + * coord. + */ + ir->shadow_comparitor->accept(this); + + tmp_src = get_temp(glsl_type::vec4_type); + ir_to_mesa_dst_reg tmp_dst = ir_to_mesa_dst_reg_from_src(tmp_src); + + tmp_dst.writemask = WRITEMASK_Z; + ir_to_mesa_emit_op1(ir, OPCODE_MOV, tmp_dst, this->result); + + tmp_dst.writemask = WRITEMASK_XY; + ir_to_mesa_emit_op1(ir, OPCODE_MOV, tmp_dst, coord); + } + coord_dst.writemask = WRITEMASK_XYZ; - ir_to_mesa_emit_op2(ir, OPCODE_MUL, coord_dst, coord, coord_w); + ir_to_mesa_emit_op2(ir, OPCODE_MUL, coord_dst, tmp_src, coord_w); coord_dst.writemask = WRITEMASK_XYZW; coord.swizzle = SWIZZLE_XYZW; } } - if (ir->shadow_comparitor) { + /* If projection is done and the opcode is not OPCODE_TXP, then the shadow + * comparitor was put in the correct place (and projected) by the code, + * above, that handles by-hand projection. + */ + if (ir->shadow_comparitor && (!ir->projector || opcode == OPCODE_TXP)) { /* Slot the shadow value in as the second to last component of the * coord. */ |