}
}
-void
-fs_visitor::setup_color_payload(fs_reg *dst, fs_reg color, unsigned components,
- unsigned exec_size, bool use_2nd_half)
-{
- brw_wm_prog_key *key = (brw_wm_prog_key*) this->key;
- fs_inst *inst;
-
- if (key->clamp_fragment_color) {
- fs_reg tmp = vgrf(glsl_type::vec4_type);
- assert(color.type == BRW_REGISTER_TYPE_F);
- for (unsigned i = 0; i < components; i++) {
- inst = bld.MOV(offset(tmp, bld, i), offset(color, bld, i));
- inst->saturate = true;
- }
- color = tmp;
- }
-
- if (exec_size < dispatch_width) {
- unsigned half_idx = use_2nd_half ? 1 : 0;
- for (unsigned i = 0; i < components; i++)
- dst[i] = half(offset(color, bld, i), half_idx);
- } else {
- for (unsigned i = 0; i < components; i++)
- dst[i] = offset(color, bld, i);
- }
-}
-
static enum brw_conditional_mod
cond_for_alpha_func(GLenum func)
{
fs_inst *
fs_visitor::emit_single_fb_write(const fs_builder &bld,
fs_reg color0, fs_reg color1,
- fs_reg src0_alpha, unsigned components,
- unsigned exec_size, bool use_2nd_half)
+ fs_reg src0_alpha, unsigned components)
{
assert(stage == MESA_SHADER_FRAGMENT);
brw_wm_prog_data *prog_data = (brw_wm_prog_data*) this->prog_data;
- brw_wm_prog_key *key = (brw_wm_prog_key*) this->key;
- const fs_builder ubld = bld.group(exec_size, use_2nd_half);
- int header_size = 2, payload_header_size;
-
- /* We can potentially have a message length of up to 15, so we have to set
- * base_mrf to either 0 or 1 in order to fit in m0..m15.
- */
- fs_reg *sources = ralloc_array(mem_ctx, fs_reg, 15);
- int length = 0;
-
- /* From the Sandy Bridge PRM, volume 4, page 198:
- *
- * "Dispatched Pixel Enables. One bit per pixel indicating
- * which pixels were originally enabled when the thread was
- * dispatched. This field is only required for the end-of-
- * thread message and on all dual-source messages."
- */
- if (devinfo->gen >= 6 &&
- (devinfo->is_haswell || devinfo->gen >= 8 || !prog_data->uses_kill) &&
- color1.file == BAD_FILE &&
- key->nr_color_regions == 1) {
- header_size = 0;
- }
-
- if (header_size != 0) {
- assert(header_size == 2);
- /* Allocate 2 registers for a header */
- length += 2;
- }
-
- if (payload.aa_dest_stencil_reg) {
- sources[length] = fs_reg(GRF, alloc.allocate(1));
- bld.group(8, 0).exec_all().annotate("FB write stencil/AA alpha")
- .MOV(sources[length],
- fs_reg(brw_vec8_grf(payload.aa_dest_stencil_reg, 0)));
- length++;
- }
-
- if (prog_data->uses_omask) {
- sources[length] = fs_reg(GRF, alloc.allocate(1),
- BRW_REGISTER_TYPE_UD);
-
- /* Hand over gl_SampleMask. Only the lower 16 bits of each channel are
- * relevant. Since it's unsigned single words one vgrf is always
- * 16-wide, but only the lower or higher 8 channels will be used by the
- * hardware when doing a SIMD8 write depending on whether we have
- * selected the subspans for the first or second half respectively.
- */
- fs_reg sample_mask = this->sample_mask;
- assert(sample_mask.file != BAD_FILE && type_sz(sample_mask.type) == 4);
- sample_mask.type = BRW_REGISTER_TYPE_UW;
- sample_mask.stride *= 2;
-
- ubld.annotate("FB write oMask")
- .MOV(half(retype(sources[length], BRW_REGISTER_TYPE_UW),
- use_2nd_half),
- half(sample_mask, use_2nd_half));
- length++;
- }
- payload_header_size = length;
-
- if (src0_alpha.file != BAD_FILE) {
- /* FIXME: This is being passed at the wrong location in the payload and
- * doesn't work when gl_SampleMask and MRTs are used simultaneously.
- * It's supposed to be immediately before oMask but there seems to be no
- * reasonable way to pass them in the correct order because LOAD_PAYLOAD
- * requires header sources to form a contiguous segment at the beginning
- * of the message and src0_alpha has per-channel semantics.
- */
- setup_color_payload(&sources[length], src0_alpha, 1, exec_size, false);
- length++;
- }
-
- setup_color_payload(&sources[length], color0, components,
- exec_size, use_2nd_half);
- length += 4;
-
- if (color1.file != BAD_FILE) {
- setup_color_payload(&sources[length], color1, components,
- exec_size, use_2nd_half);
- length += 4;
- }
+ /* Hand over gl_FragDepth or the payload depth. */
+ const fs_reg dst_depth = (payload.dest_depth_reg ?
+ fs_reg(brw_vec8_grf(payload.dest_depth_reg, 0)) :
+ fs_reg());
+ fs_reg src_depth;
if (source_depth_to_render_target) {
- if (prog->OutputsWritten & BITFIELD64_BIT(FRAG_RESULT_DEPTH)) {
- /* Hand over gl_FragDepth. */
- assert(this->frag_depth.file != BAD_FILE);
- if (exec_size < dispatch_width) {
- sources[length] = half(this->frag_depth, use_2nd_half);
- } else {
- sources[length] = this->frag_depth;
- }
- } else {
- /* Pass through the payload depth. */
- sources[length] = fs_reg(brw_vec8_grf(payload.source_depth_reg, 0));
- }
- length++;
+ if (prog->OutputsWritten & BITFIELD64_BIT(FRAG_RESULT_DEPTH))
+ src_depth = frag_depth;
+ else
+ src_depth = fs_reg(brw_vec8_grf(payload.source_depth_reg, 0));
}
- if (payload.dest_depth_reg)
- sources[length++] = fs_reg(brw_vec8_grf(payload.dest_depth_reg, 0));
-
- fs_inst *load;
- fs_inst *write;
- if (devinfo->gen >= 7) {
- /* Send from the GRF */
- fs_reg payload = fs_reg(GRF, -1, BRW_REGISTER_TYPE_F);
- load = ubld.LOAD_PAYLOAD(payload, sources, length, payload_header_size);
- payload.reg = alloc.allocate(load->regs_written);
- load->dst = payload;
- write = ubld.emit(FS_OPCODE_FB_WRITE, reg_undef, payload);
- write->base_mrf = -1;
- } else {
- /* Send from the MRF */
- load = ubld.LOAD_PAYLOAD(fs_reg(MRF, 1, BRW_REGISTER_TYPE_F),
- sources, length, payload_header_size);
-
- /* On pre-SNB, we have to interlace the color values. LOAD_PAYLOAD
- * will do this for us if we just give it a COMPR4 destination.
- */
- if (devinfo->gen < 6 && exec_size == 16)
- load->dst.reg |= BRW_MRF_COMPR4;
-
- write = ubld.emit(FS_OPCODE_FB_WRITE);
- write->exec_size = exec_size;
- write->base_mrf = 1;
- }
+ const fs_reg sources[] = {
+ color0, color1, src0_alpha, src_depth, dst_depth, sample_mask,
+ fs_reg(components)
+ };
+ fs_inst *write = bld.emit(FS_OPCODE_FB_WRITE_LOGICAL, fs_reg(),
+ sources, ARRAY_SIZE(sources));
- write->mlen = load->regs_written;
- write->header_size = header_size;
if (prog_data->uses_kill) {
write->predicate = BRW_PREDICATE_NORMAL;
write->flag_subreg = 1;
}
+
return write;
}
const fs_builder abld = bld.annotate("FB dual-source write");
inst = emit_single_fb_write(abld, this->outputs[0],
- this->dual_src_output, reg_undef, 4, 8);
+ this->dual_src_output, reg_undef, 4);
inst->target = 0;
- /* SIMD16 dual source blending requires to send two SIMD8 dual source
- * messages, where each message contains color data for 8 pixels. Color
- * data for the first group of pixels is stored in the "lower" half of
- * the color registers, so in SIMD16, the previous message did:
- * m + 0: r0
- * m + 1: g0
- * m + 2: b0
- * m + 3: a0
- *
- * Here goes the second message, which packs color data for the
- * remaining 8 pixels. Color data for these pixels is stored in the
- * "upper" half of the color registers, so we need to do:
- * m + 0: r1
- * m + 1: g1
- * m + 2: b1
- * m + 3: a1
- */
- if (dispatch_width == 16) {
- inst = emit_single_fb_write(abld, this->outputs[0],
- this->dual_src_output, reg_undef, 4, 8,
- true);
- inst->target = 0;
- }
-
prog_data->dual_src_blend = true;
} else {
for (int target = 0; target < key->nr_color_regions; target++) {
inst = emit_single_fb_write(abld, this->outputs[target], reg_undef,
src0_alpha,
- this->output_components[target],
- dispatch_width);
+ this->output_components[target]);
inst->target = target;
}
}
const fs_reg tmp = bld.vgrf(BRW_REGISTER_TYPE_UD, 4);
bld.LOAD_PAYLOAD(tmp, srcs, 4, 0);
- inst = emit_single_fb_write(bld, tmp, reg_undef, reg_undef, 4,
- dispatch_width);
+ inst = emit_single_fb_write(bld, tmp, reg_undef, reg_undef, 4);
inst->target = 0;
}
projects / mesa.git / commitdiff