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i965/fs: add generator support for pixel interpolator query

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V5: - Split into separate opcodes
    - Pass message data in src1 immediate
    - Put noperspective bit in fs_inst rather than adding any junk to
      backend_instruction

Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Chris Forbes 2013-11-18 21:13:13 +13:00
parent d732598b63
commit 6e91f2df95
4 changed files with 59 additions and 0 deletions
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4
src/mesa/drivers/dri/i965/brw_defines.h
View file

@ -853,6 +853,10 @@ enum opcode {
FS_OPCODE_UNPACK_HALF_2x16_SPLIT_X,
FS_OPCODE_UNPACK_HALF_2x16_SPLIT_Y,
FS_OPCODE_PLACEHOLDER_HALT,
FS_OPCODE_INTERPOLATE_AT_CENTROID,
FS_OPCODE_INTERPOLATE_AT_SAMPLE,
FS_OPCODE_INTERPOLATE_AT_SHARED_OFFSET,
FS_OPCODE_INTERPOLATE_AT_PER_SLOT_OFFSET,
VS_OPCODE_URB_WRITE,
VS_OPCODE_PULL_CONSTANT_LOAD,

8
src/mesa/drivers/dri/i965/brw_fs.cpp
View file

@ -370,6 +370,10 @@ fs_inst::is_send_from_grf() const
{
return (opcode == FS_OPCODE_VARYING_PULL_CONSTANT_LOAD_GEN7 ||
opcode == SHADER_OPCODE_SHADER_TIME_ADD ||
opcode == FS_OPCODE_INTERPOLATE_AT_CENTROID ||
opcode == FS_OPCODE_INTERPOLATE_AT_SAMPLE ||
opcode == FS_OPCODE_INTERPOLATE_AT_SHARED_OFFSET ||
opcode == FS_OPCODE_INTERPOLATE_AT_PER_SLOT_OFFSET ||
(opcode == FS_OPCODE_UNIFORM_PULL_CONSTANT_LOAD &&
src[1].file == GRF) ||
(is_tex() && src[0].file == GRF));
@ -837,6 +841,10 @@ fs_visitor::implied_mrf_writes(fs_inst *inst)
return 2;
case SHADER_OPCODE_UNTYPED_ATOMIC:
case SHADER_OPCODE_UNTYPED_SURFACE_READ:
case FS_OPCODE_INTERPOLATE_AT_CENTROID:
case FS_OPCODE_INTERPOLATE_AT_SAMPLE:
case FS_OPCODE_INTERPOLATE_AT_SHARED_OFFSET:
case FS_OPCODE_INTERPOLATE_AT_PER_SLOT_OFFSET:
return 0;
default:
unreachable("not reached");

7
src/mesa/drivers/dri/i965/brw_fs.h
View file

@ -196,6 +196,7 @@ public:
bool shadow_compare:1;
bool force_uncompressed:1;
bool force_sechalf:1;
bool pi_noperspective:1; /**< Pixel interpolator noperspective flag */
};
/**
@ -623,6 +624,12 @@ private:
struct brw_reg offset);
void generate_mov_dispatch_to_flags(fs_inst *inst);
void generate_pixel_interpolator_query(fs_inst *inst,
struct brw_reg dst,
struct brw_reg src,
struct brw_reg msg_data,
unsigned msg_type);
void generate_set_omask(fs_inst *inst,
struct brw_reg dst,
struct brw_reg sample_mask);

40
src/mesa/drivers/dri/i965/brw_fs_generator.cpp
View file

@ -995,6 +995,26 @@ fs_generator::generate_mov_dispatch_to_flags(fs_inst *inst)
brw_pop_insn_state(p);
}
void
fs_generator::generate_pixel_interpolator_query(fs_inst *inst,
struct brw_reg dst,
struct brw_reg src,
struct brw_reg msg_data,
unsigned msg_type)
{
assert(msg_data.file == BRW_IMMEDIATE_VALUE &&
msg_data.type == BRW_REGISTER_TYPE_UD);
brw_pixel_interpolator_query(p,
retype(dst, BRW_REGISTER_TYPE_UW),
src,
inst->pi_noperspective,
msg_type,
msg_data.dw1.ud,
inst->mlen,
inst->regs_written);
}
static uint32_t brw_file_from_reg(fs_reg *reg)
{
@ -1730,6 +1750,26 @@ fs_generator::generate_code(exec_list *instructions)
}
break;
case FS_OPCODE_INTERPOLATE_AT_CENTROID:
generate_pixel_interpolator_query(inst, dst, src[0], src[1],
GEN7_PIXEL_INTERPOLATOR_LOC_CENTROID);
break;
case FS_OPCODE_INTERPOLATE_AT_SAMPLE:
generate_pixel_interpolator_query(inst, dst, src[0], src[1],
GEN7_PIXEL_INTERPOLATOR_LOC_SAMPLE);
break;
case FS_OPCODE_INTERPOLATE_AT_SHARED_OFFSET:
generate_pixel_interpolator_query(inst, dst, src[0], src[1],
GEN7_PIXEL_INTERPOLATOR_LOC_SHARED_OFFSET);
break;
case FS_OPCODE_INTERPOLATE_AT_PER_SLOT_OFFSET:
generate_pixel_interpolator_query(inst, dst, src[0], src[1],
GEN7_PIXEL_INTERPOLATOR_LOC_PER_SLOT_OFFSET);
break;
default:
if (inst->opcode < (int) ARRAY_SIZE(opcode_descs)) {
_mesa_problem(ctx, "Unsupported opcode `%s' in FS",