diff options
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_wm_glsl.c')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_wm_glsl.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_wm_glsl.c b/src/mesa/drivers/dri/i965/brw_wm_glsl.c index 26fe40c362..a5b18ec7d7 100644 --- a/src/mesa/drivers/dri/i965/brw_wm_glsl.c +++ b/src/mesa/drivers/dri/i965/brw_wm_glsl.c @@ -10,6 +10,9 @@ enum _subroutine { SUB_NOISE1, SUB_NOISE2, SUB_NOISE3, SUB_NOISE4 }; +static struct brw_reg get_dst_reg(struct brw_wm_compile *c, + const struct prog_instruction *inst, + GLuint component); /** * Determine if the given fragment program uses GLSL features such @@ -390,6 +393,27 @@ static void prealloc_reg(struct brw_wm_compile *c) prealloc_grf(c, 126); prealloc_grf(c, 127); + for (i = 0; i < c->nr_fp_insns; i++) { + const struct prog_instruction *inst = &c->prog_instructions[i]; + struct brw_reg dst[4]; + + switch (inst->Opcode) { + case OPCODE_TEX: + case OPCODE_TXB: + /* Allocate the channels of texture results contiguously, + * since they are written out that way by the sampler unit. + */ + for (j = 0; j < 4; j++) { + dst[j] = get_dst_reg(c, inst, j); + if (j != 0) + assert(dst[j].nr == dst[j - 1].nr + 1); + } + break; + default: + break; + } + } + /* An instruction may reference up to three constants. * They'll be found in these registers. * XXX alloc these on demand! |