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i965/fs: Implement texelFetch() on Ivybridge.

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Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Kenneth Graunke
2011-08-25 17:43:58 -07:00
parent 30be2cc6c7
commit 0edf5d63d6
1 changed files with 21 additions and 4 deletions
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src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
+21 -4
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@@ -957,12 +957,29 @@ fs_visitor::emit_texture_gen7(ir_texture *ir, fs_reg dst, fs_reg coordinate,
mlen += reg_width;
break;
case ir_txf:
assert(!"GLSL 1.30 features unsupported");
/* Unfortunately, the parameters for LD are intermixed: u, lod, v, r. */
fs_inst *inst = emit(BRW_OPCODE_MOV,
fs_reg(MRF, base_mrf + mlen, BRW_REGISTER_TYPE_D),
coordinate);
coordinate.reg_offset++;
mlen += reg_width;
ir->lod_info.lod->accept(this);
emit(BRW_OPCODE_MOV, fs_reg(MRF, base_mrf + mlen, BRW_REGISTER_TYPE_D), this->result);
mlen += reg_width;
for (int i = 1; i < ir->coordinate->type->vector_elements; i++) {
fs_inst *inst = emit(BRW_OPCODE_MOV,
fs_reg(MRF, base_mrf + mlen, BRW_REGISTER_TYPE_D),
coordinate);
coordinate.reg_offset++;
mlen += reg_width;
}
break;
}
/* Set up the coordinate (except for TXD where it was done earlier) */
if (ir->op != ir_txd && ir->op != ir_txs) {
/* Set up the coordinate (except for cases where it was done above) */
if (ir->op != ir_txd && ir->op != ir_txs && ir->op != ir_txf) {
for (int i = 0; i < ir->coordinate->type->vector_elements; i++) {
fs_inst *inst = emit(BRW_OPCODE_MOV, fs_reg(MRF, base_mrf + mlen),
coordinate);
@@ -980,7 +997,7 @@ fs_visitor::emit_texture_gen7(ir_texture *ir, fs_reg dst, fs_reg coordinate,
case ir_txb: inst = emit(FS_OPCODE_TXB, dst); break;
case ir_txl: inst = emit(FS_OPCODE_TXL, dst); break;
case ir_txd: inst = emit(FS_OPCODE_TXD, dst); break;
case ir_txf: assert(!"TXF unsupported."); break;
case ir_txf: inst = emit(FS_OPCODE_TXF, dst); break;
case ir_txs: inst = emit(FS_OPCODE_TXS, dst); break;
}
inst->base_mrf = base_mrf;