diff options
| -rw-r--r-- | src/mesa/shader/program.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/src/mesa/shader/program.c b/src/mesa/shader/program.c index 2cd6eb8a389..18d4ef97597 100644 --- a/src/mesa/shader/program.c +++ b/src/mesa/shader/program.c @@ -813,9 +813,17 @@ _mesa_find_free_register(const struct gl_program *prog, GLuint regFile) const struct prog_instruction *inst = prog->Instructions + i; const GLuint n = _mesa_num_inst_src_regs(inst->Opcode); - for (k = 0; k < n; k++) { - if (inst->SrcReg[k].File == regFile) { - used[inst->SrcReg[k].Index] = GL_TRUE; + /* check dst reg first */ + if (inst->DstReg.File == regFile) { + used[inst->DstReg.Index] = GL_TRUE; + } + else { + /* check src regs otherwise */ + for (k = 0; k < n; k++) { + if (inst->SrcReg[k].File == regFile) { + used[inst->SrcReg[k].Index] = GL_TRUE; + break; + } } } } |