[Mesa-dev] [PATCH] gallivm, tgsi: provide fake sample_i_ms implementations

[sroland at vmware.com]

From: Roland Scheidegger <sroland at vmware.com>

Just like the rest of the msaa "implementation" it's just fake for now...
---
 src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c | 7 ++++++-
 src/gallium/auxiliary/tgsi/tgsi_exec.c          | 8 +++++---
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
index 8c39ab0..a19be8a 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
@@ -2592,7 +2592,10 @@ emit_fetch_texels( struct lp_build_tgsi_soa_context *bld,
       explicit_lod = lp_build_emit_fetch(&bld->bld_base, inst, 0, 3);
       lod_property = lp_build_lod_property(&bld->bld_base, inst, 0);
    }
-   /* XXX: for real msaa support, the w component would be the sample index. */
+   /*
+    * XXX: for real msaa support, the w component (or src2.x for sample_i_ms)
+    * would be the sample index.
+    */
 
    for (i = 0; i < dims; i++) {
       coords[i] = lp_build_emit_fetch(&bld->bld_base, inst, 0, i);
@@ -2742,6 +2745,7 @@ near_end_of_shader(struct lp_build_tgsi_soa_context *bld,
          opcode == TGSI_OPCODE_SAMPLE_C_LZ ||
          opcode == TGSI_OPCODE_SAMPLE_D ||
          opcode == TGSI_OPCODE_SAMPLE_I ||
+         opcode == TGSI_OPCODE_SAMPLE_I_MS ||
          opcode == TGSI_OPCODE_SAMPLE_L ||
          opcode == TGSI_OPCODE_SVIEWINFO ||
          opcode == TGSI_OPCODE_CAL ||
@@ -3989,6 +3993,7 @@ lp_build_tgsi_soa(struct gallivm_state *gallivm,
    bld.bld_base.op_actions[TGSI_OPCODE_SAMPLE_C_LZ].emit = sample_c_lz_emit;
    bld.bld_base.op_actions[TGSI_OPCODE_SAMPLE_D].emit = sample_d_emit;
    bld.bld_base.op_actions[TGSI_OPCODE_SAMPLE_I].emit = sample_i_emit;
+   bld.bld_base.op_actions[TGSI_OPCODE_SAMPLE_I_MS].emit = sample_i_emit;
    bld.bld_base.op_actions[TGSI_OPCODE_SAMPLE_L].emit = sample_l_emit;
    bld.bld_base.op_actions[TGSI_OPCODE_SVIEWINFO].emit = sviewinfo_emit;
 
diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.c b/src/gallium/auxiliary/tgsi/tgsi_exec.c
index d898fd6..126259f 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_exec.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_exec.c
@@ -2300,7 +2300,8 @@ exec_txf(struct tgsi_exec_machine *mach,
 
    IFETCH(&r[3], 0, TGSI_CHAN_W);
 
-   if (inst->Instruction.Opcode == TGSI_OPCODE_SAMPLE_I) {
+   if (inst->Instruction.Opcode == TGSI_OPCODE_SAMPLE_I ||
+       inst->Instruction.Opcode == TGSI_OPCODE_SAMPLE_I_MS) {
       target = mach->SamplerViews[unit].Resource;
    }
    else {
@@ -2342,7 +2343,8 @@ exec_txf(struct tgsi_exec_machine *mach,
       r[3].f[j] = rgba[3][j];
    }
 
-   if (inst->Instruction.Opcode == TGSI_OPCODE_SAMPLE_I) {
+   if (inst->Instruction.Opcode == TGSI_OPCODE_SAMPLE_I ||
+       inst->Instruction.Opcode == TGSI_OPCODE_SAMPLE_I_MS) {
       unsigned char swizzles[4];
       swizzles[0] = inst->Src[1].Register.SwizzleX;
       swizzles[1] = inst->Src[1].Register.SwizzleY;
@@ -4967,7 +4969,7 @@ exec_instruction(
       break;
 
    case TGSI_OPCODE_SAMPLE_I_MS:
-      assert(0);
+      exec_txf(mach, inst);
       break;
 
    case TGSI_OPCODE_SAMPLE:
-- 
2.1.4