return reg;
}
-fs_inst *
-fs_visitor::emit_texture_gen4(ir_texture_opcode op, fs_reg dst,
- fs_reg coordinate, int coord_components,
- fs_reg shadow_c,
- fs_reg lod, fs_reg dPdy, int grad_components,
- uint32_t sampler)
-{
- int mlen;
- int base_mrf = 1;
- bool simd16 = false;
- fs_reg orig_dst;
-
- /* g0 header. */
- mlen = 1;
-
- if (shadow_c.file != BAD_FILE) {
- for (int i = 0; i < coord_components; i++) {
- bld.MOV(fs_reg(MRF, base_mrf + mlen + i), coordinate);
- coordinate = offset(coordinate, bld, 1);
- }
-
- /* gen4's SIMD8 sampler always has the slots for u,v,r present.
- * the unused slots must be zeroed.
- */
- for (int i = coord_components; i < 3; i++) {
- bld.MOV(fs_reg(MRF, base_mrf + mlen + i), fs_reg(0.0f));
- }
- mlen += 3;
-
- if (op == ir_tex) {
- /* There's no plain shadow compare message, so we use shadow
- * compare with a bias of 0.0.
- */
- bld.MOV(fs_reg(MRF, base_mrf + mlen), fs_reg(0.0f));
- mlen++;
- } else if (op == ir_txb || op == ir_txl) {
- bld.MOV(fs_reg(MRF, base_mrf + mlen), lod);
- mlen++;
- } else {
- unreachable("Should not get here.");
- }
-
- bld.MOV(fs_reg(MRF, base_mrf + mlen), shadow_c);
- mlen++;
- } else if (op == ir_tex) {
- for (int i = 0; i < coord_components; i++) {
- bld.MOV(fs_reg(MRF, base_mrf + mlen + i), coordinate);
- coordinate = offset(coordinate, bld, 1);
- }
- /* zero the others. */
- for (int i = coord_components; i<3; i++) {
- bld.MOV(fs_reg(MRF, base_mrf + mlen + i), fs_reg(0.0f));
- }
- /* gen4's SIMD8 sampler always has the slots for u,v,r present. */
- mlen += 3;
- } else if (op == ir_txd) {
- fs_reg &dPdx = lod;
-
- for (int i = 0; i < coord_components; i++) {
- bld.MOV(fs_reg(MRF, base_mrf + mlen + i), coordinate);
- coordinate = offset(coordinate, bld, 1);
- }
- /* the slots for u and v are always present, but r is optional */
- mlen += MAX2(coord_components, 2);
-
- /* P = u, v, r
- * dPdx = dudx, dvdx, drdx
- * dPdy = dudy, dvdy, drdy
- *
- * 1-arg: Does not exist.
- *
- * 2-arg: dudx dvdx dudy dvdy
- * dPdx.x dPdx.y dPdy.x dPdy.y
- * m4 m5 m6 m7
- *
- * 3-arg: dudx dvdx drdx dudy dvdy drdy
- * dPdx.x dPdx.y dPdx.z dPdy.x dPdy.y dPdy.z
- * m5 m6 m7 m8 m9 m10
- */
- for (int i = 0; i < grad_components; i++) {
- bld.MOV(fs_reg(MRF, base_mrf + mlen), dPdx);
- dPdx = offset(dPdx, bld, 1);
- }
- mlen += MAX2(grad_components, 2);
-
- for (int i = 0; i < grad_components; i++) {
- bld.MOV(fs_reg(MRF, base_mrf + mlen), dPdy);
- dPdy = offset(dPdy, bld, 1);
- }
- mlen += MAX2(grad_components, 2);
- } else if (op == ir_txs) {
- /* There's no SIMD8 resinfo message on Gen4. Use SIMD16 instead. */
- simd16 = true;
- bld.MOV(fs_reg(MRF, base_mrf + mlen, BRW_REGISTER_TYPE_UD), lod);
- mlen += 2;
- } else {
- /* Oh joy. gen4 doesn't have SIMD8 non-shadow-compare bias/lod
- * instructions. We'll need to do SIMD16 here.
- */
- simd16 = true;
- assert(op == ir_txb || op == ir_txl || op == ir_txf);
-
- for (int i = 0; i < coord_components; i++) {
- bld.MOV(fs_reg(MRF, base_mrf + mlen + i * 2, coordinate.type),
- coordinate);
- coordinate = offset(coordinate, bld, 1);
- }
-
- /* Initialize the rest of u/v/r with 0.0. Empirically, this seems to
- * be necessary for TXF (ld), but seems wise to do for all messages.
- */
- for (int i = coord_components; i < 3; i++) {
- bld.MOV(fs_reg(MRF, base_mrf + mlen + i * 2), fs_reg(0.0f));
- }
-
- /* lod/bias appears after u/v/r. */
- mlen += 6;
-
- bld.MOV(fs_reg(MRF, base_mrf + mlen, lod.type), lod);
- mlen++;
-
- /* The unused upper half. */
- mlen++;
- }
-
- if (simd16) {
- /* Now, since we're doing simd16, the return is 2 interleaved
- * vec4s where the odd-indexed ones are junk. We'll need to move
- * this weirdness around to the expected layout.
- */
- orig_dst = dst;
- dst = fs_reg(GRF, alloc.allocate(8), orig_dst.type);
- }
-
- enum opcode opcode;
- switch (op) {
- case ir_tex: opcode = SHADER_OPCODE_TEX; break;
- case ir_txb: opcode = FS_OPCODE_TXB; break;
- case ir_txl: opcode = SHADER_OPCODE_TXL; break;
- case ir_txd: opcode = SHADER_OPCODE_TXD; break;
- case ir_txs: opcode = SHADER_OPCODE_TXS; break;
- case ir_txf: opcode = SHADER_OPCODE_TXF; break;
- default:
- unreachable("not reached");
- }
-
- fs_inst *inst = bld.emit(opcode, dst, reg_undef, fs_reg(sampler));
- inst->base_mrf = base_mrf;
- inst->mlen = mlen;
- inst->header_size = 1;
- inst->regs_written = simd16 ? 8 : 4;
-
- if (simd16) {
- for (int i = 0; i < 4; i++) {
- bld.MOV(orig_dst, dst);
- orig_dst = offset(orig_dst, bld, 1);
- dst = offset(dst, bld, 2);
- }
- }
-
- return inst;
-}
-
-fs_inst *
-fs_visitor::emit_texture_gen4_simd16(ir_texture_opcode op, fs_reg dst,
- fs_reg coordinate, int vector_elements,
- fs_reg shadow_c, fs_reg lod,
- uint32_t sampler)
-{
- fs_reg message(MRF, 2, BRW_REGISTER_TYPE_F, dispatch_width);
- bool has_lod = op == ir_txl || op == ir_txb || op == ir_txf || op == ir_txs;
-
- if (has_lod && shadow_c.file != BAD_FILE)
- no16("TXB and TXL with shadow comparison unsupported in SIMD16.");
-
- if (op == ir_txd)
- no16("textureGrad unsupported in SIMD16.");
-
- /* Copy the coordinates. */
- for (int i = 0; i < vector_elements; i++) {
- bld.MOV(retype(offset(message, bld, i), coordinate.type), coordinate);
- coordinate = offset(coordinate, bld, 1);
- }
-
- fs_reg msg_end = offset(message, bld, vector_elements);
-
- /* Messages other than sample and ld require all three components */
- if (vector_elements > 0 && (has_lod || shadow_c.file != BAD_FILE)) {
- for (int i = vector_elements; i < 3; i++) {
- bld.MOV(offset(message, bld, i), fs_reg(0.0f));
- }
- msg_end = offset(message, bld, 3);
- }
-
- if (has_lod) {
- fs_reg msg_lod = retype(msg_end, op == ir_txf ?
- BRW_REGISTER_TYPE_UD : BRW_REGISTER_TYPE_F);
- bld.MOV(msg_lod, lod);
- msg_end = offset(msg_lod, bld, 1);
- }
-
- if (shadow_c.file != BAD_FILE) {
- fs_reg msg_ref = offset(message, bld, 3 + has_lod);
- bld.MOV(msg_ref, shadow_c);
- msg_end = offset(msg_ref, bld, 1);
- }
-
- enum opcode opcode;
- switch (op) {
- case ir_tex: opcode = SHADER_OPCODE_TEX; break;
- case ir_txb: opcode = FS_OPCODE_TXB; break;
- case ir_txd: opcode = SHADER_OPCODE_TXD; break;
- case ir_txl: opcode = SHADER_OPCODE_TXL; break;
- case ir_txs: opcode = SHADER_OPCODE_TXS; break;
- case ir_txf: opcode = SHADER_OPCODE_TXF; break;
- default: unreachable("not reached");
- }
-
- fs_inst *inst = bld.emit(opcode, dst, reg_undef, fs_reg(sampler));
- inst->base_mrf = message.reg - 1;
- inst->mlen = msg_end.reg - inst->base_mrf;
- inst->header_size = 1;
- inst->regs_written = 8;
-
- return inst;
-}
-
-/* gen5's sampler has slots for u, v, r, array index, then optional
- * parameters like shadow comparitor or LOD bias. If optional
- * parameters aren't present, those base slots are optional and don't
- * need to be included in the message.
- *
- * We don't fill in the unnecessary slots regardless, which may look
- * surprising in the disassembly.
- */
-fs_inst *
-fs_visitor::emit_texture_gen5(ir_texture_opcode op, fs_reg dst,
- fs_reg coordinate, int vector_elements,
- fs_reg shadow_c,
- fs_reg lod, fs_reg lod2, int grad_components,
- fs_reg sample_index, uint32_t sampler,
- bool has_offset)
-{
- int reg_width = dispatch_width / 8;
- unsigned header_size = 0;
-
- fs_reg message(MRF, 2, BRW_REGISTER_TYPE_F, dispatch_width);
- fs_reg msg_coords = message;
-
- if (has_offset) {
- /* The offsets set up by the ir_texture visitor are in the
- * m1 header, so we can't go headerless.
- */
- header_size = 1;
- message.reg--;
- }
-
- for (int i = 0; i < vector_elements; i++) {
- bld.MOV(retype(offset(msg_coords, bld, i), coordinate.type), coordinate);
- coordinate = offset(coordinate, bld, 1);
- }
- fs_reg msg_end = offset(msg_coords, bld, vector_elements);
- fs_reg msg_lod = offset(msg_coords, bld, 4);
-
- if (shadow_c.file != BAD_FILE) {
- fs_reg msg_shadow = msg_lod;
- bld.MOV(msg_shadow, shadow_c);
- msg_lod = offset(msg_shadow, bld, 1);
- msg_end = msg_lod;
- }
-
- enum opcode opcode;
- switch (op) {
- case ir_tex:
- opcode = SHADER_OPCODE_TEX;
- break;
- case ir_txb:
- bld.MOV(msg_lod, lod);
- msg_end = offset(msg_lod, bld, 1);
-
- opcode = FS_OPCODE_TXB;
- break;
- case ir_txl:
- bld.MOV(msg_lod, lod);
- msg_end = offset(msg_lod, bld, 1);
-
- opcode = SHADER_OPCODE_TXL;
- break;
- case ir_txd: {
- /**
- * P = u, v, r
- * dPdx = dudx, dvdx, drdx
- * dPdy = dudy, dvdy, drdy
- *
- * Load up these values:
- * - dudx dudy dvdx dvdy drdx drdy
- * - dPdx.x dPdy.x dPdx.y dPdy.y dPdx.z dPdy.z
- */
- msg_end = msg_lod;
- for (int i = 0; i < grad_components; i++) {
- bld.MOV(msg_end, lod);
- lod = offset(lod, bld, 1);
- msg_end = offset(msg_end, bld, 1);
-
- bld.MOV(msg_end, lod2);
- lod2 = offset(lod2, bld, 1);
- msg_end = offset(msg_end, bld, 1);
- }
-
- opcode = SHADER_OPCODE_TXD;
- break;
- }
- case ir_txs:
- msg_lod = retype(msg_end, BRW_REGISTER_TYPE_UD);
- bld.MOV(msg_lod, lod);
- msg_end = offset(msg_lod, bld, 1);
-
- opcode = SHADER_OPCODE_TXS;
- break;
- case ir_query_levels:
- msg_lod = msg_end;
- bld.MOV(retype(msg_lod, BRW_REGISTER_TYPE_UD), fs_reg(0u));
- msg_end = offset(msg_lod, bld, 1);
-
- opcode = SHADER_OPCODE_TXS;
- break;
- case ir_txf:
- msg_lod = offset(msg_coords, bld, 3);
- bld.MOV(retype(msg_lod, BRW_REGISTER_TYPE_UD), lod);
- msg_end = offset(msg_lod, bld, 1);
-
- opcode = SHADER_OPCODE_TXF;
- break;
- case ir_txf_ms:
- msg_lod = offset(msg_coords, bld, 3);
- /* lod */
- bld.MOV(retype(msg_lod, BRW_REGISTER_TYPE_UD), fs_reg(0u));
- /* sample index */
- bld.MOV(retype(offset(msg_lod, bld, 1), BRW_REGISTER_TYPE_UD), sample_index);
- msg_end = offset(msg_lod, bld, 2);
-
- opcode = SHADER_OPCODE_TXF_CMS;
- break;
- case ir_lod:
- opcode = SHADER_OPCODE_LOD;
- break;
- case ir_tg4:
- opcode = SHADER_OPCODE_TG4;
- break;
- default:
- unreachable("not reached");
- }
-
- fs_inst *inst = bld.emit(opcode, dst, reg_undef, fs_reg(sampler));
- inst->base_mrf = message.reg;
- inst->mlen = msg_end.reg - message.reg;
- inst->header_size = header_size;
- inst->regs_written = 4 * reg_width;
-
- if (inst->mlen > MAX_SAMPLER_MESSAGE_SIZE) {
- fail("Message length >" STRINGIFY(MAX_SAMPLER_MESSAGE_SIZE)
- " disallowed by hardware\n");
- }
-
- return inst;
-}
-
-static bool
-is_high_sampler(const struct brw_device_info *devinfo, fs_reg sampler)
-{
- if (devinfo->gen < 8 && !devinfo->is_haswell)
- return false;
-
- return sampler.file != IMM || sampler.fixed_hw_reg.dw1.ud >= 16;
-}
-
-fs_inst *
-fs_visitor::emit_texture_gen7(ir_texture_opcode op, fs_reg dst,
- fs_reg coordinate, int coord_components,
- fs_reg shadow_c,
- fs_reg lod, fs_reg lod2, int grad_components,
- fs_reg sample_index, fs_reg mcs, fs_reg sampler,
- fs_reg offset_value)
-{
- int reg_width = dispatch_width / 8;
- unsigned header_size = 0;
-
- fs_reg *sources = ralloc_array(mem_ctx, fs_reg, MAX_SAMPLER_MESSAGE_SIZE);
- for (int i = 0; i < MAX_SAMPLER_MESSAGE_SIZE; i++) {
- sources[i] = vgrf(glsl_type::float_type);
- }
- int length = 0;
-
- if (op == ir_tg4 || offset_value.file != BAD_FILE ||
- is_high_sampler(devinfo, sampler)) {
- /* For general texture offsets (no txf workaround), we need a header to
- * put them in. Note that for SIMD16 we're making space for two actual
- * hardware registers here, so the emit will have to fix up for this.
- *
- * * ir4_tg4 needs to place its channel select in the header,
- * for interaction with ARB_texture_swizzle
- *
- * The sampler index is only 4-bits, so for larger sampler numbers we
- * need to offset the Sampler State Pointer in the header.
- */
- header_size = 1;
- sources[0] = fs_reg(GRF, alloc.allocate(1), BRW_REGISTER_TYPE_UD);
- length++;
- }
-
- if (shadow_c.file != BAD_FILE) {
- bld.MOV(sources[length], shadow_c);
- length++;
- }
-
- bool has_nonconstant_offset =
- offset_value.file != BAD_FILE && offset_value.file != IMM;
- bool coordinate_done = false;
-
- /* The sampler can only meaningfully compute LOD for fragment shader
- * messages. For all other stages, we change the opcode to ir_txl and
- * hardcode the LOD to 0.
- */
- if (stage != MESA_SHADER_FRAGMENT && op == ir_tex) {
- op = ir_txl;
- lod = fs_reg(0.0f);
- }
-
- /* Set up the LOD info */
- switch (op) {
- case ir_tex:
- case ir_lod:
- break;
- case ir_txb:
- bld.MOV(sources[length], lod);
- length++;
- break;
- case ir_txl:
- bld.MOV(sources[length], lod);
- length++;
- break;
- case ir_txd: {
- no16("Gen7 does not support sample_d/sample_d_c in SIMD16 mode.");
-
- /* Load dPdx and the coordinate together:
- * [hdr], [ref], x, dPdx.x, dPdy.x, y, dPdx.y, dPdy.y, z, dPdx.z, dPdy.z
- */
- for (int i = 0; i < coord_components; i++) {
- bld.MOV(sources[length], coordinate);
- coordinate = offset(coordinate, bld, 1);
- length++;
-
- /* For cube map array, the coordinate is (u,v,r,ai) but there are
- * only derivatives for (u, v, r).
- */
- if (i < grad_components) {
- bld.MOV(sources[length], lod);
- lod = offset(lod, bld, 1);
- length++;
-
- bld.MOV(sources[length], lod2);
- lod2 = offset(lod2, bld, 1);
- length++;
- }
- }
-
- coordinate_done = true;
- break;
- }
- case ir_txs:
- bld.MOV(retype(sources[length], BRW_REGISTER_TYPE_UD), lod);
- length++;
- break;
- case ir_query_levels:
- bld.MOV(retype(sources[length], BRW_REGISTER_TYPE_UD), fs_reg(0u));
- length++;
- break;
- case ir_txf:
- /* Unfortunately, the parameters for LD are intermixed: u, lod, v, r.
- * On Gen9 they are u, v, lod, r
- */
-
- bld.MOV(retype(sources[length], BRW_REGISTER_TYPE_D), coordinate);
- coordinate = offset(coordinate, bld, 1);
- length++;
-
- if (devinfo->gen >= 9) {
- if (coord_components >= 2) {
- bld.MOV(retype(sources[length], BRW_REGISTER_TYPE_D), coordinate);
- coordinate = offset(coordinate, bld, 1);
- }
- length++;
- }
-
- bld.MOV(retype(sources[length], BRW_REGISTER_TYPE_D), lod);
- length++;
-
- for (int i = devinfo->gen >= 9 ? 2 : 1; i < coord_components; i++) {
- bld.MOV(retype(sources[length], BRW_REGISTER_TYPE_D), coordinate);
- coordinate = offset(coordinate, bld, 1);
- length++;
- }
-
- coordinate_done = true;
- break;
- case ir_txf_ms:
- bld.MOV(retype(sources[length], BRW_REGISTER_TYPE_UD), sample_index);
- length++;
-
- /* data from the multisample control surface */
- bld.MOV(retype(sources[length], BRW_REGISTER_TYPE_UD), mcs);
- length++;
-
- /* there is no offsetting for this message; just copy in the integer
- * texture coordinates
- */
- for (int i = 0; i < coord_components; i++) {
- bld.MOV(retype(sources[length], BRW_REGISTER_TYPE_D), coordinate);
- coordinate = offset(coordinate, bld, 1);
- length++;
- }
-
- coordinate_done = true;
- break;
- case ir_tg4:
- if (has_nonconstant_offset) {
- if (shadow_c.file != BAD_FILE)
- no16("Gen7 does not support gather4_po_c in SIMD16 mode.");
-
- /* More crazy intermixing */
- for (int i = 0; i < 2; i++) { /* u, v */
- bld.MOV(sources[length], coordinate);
- coordinate = offset(coordinate, bld, 1);
- length++;
- }
-
- for (int i = 0; i < 2; i++) { /* offu, offv */
- bld.MOV(retype(sources[length], BRW_REGISTER_TYPE_D), offset_value);
- offset_value = offset(offset_value, bld, 1);
- length++;
- }
-
- if (coord_components == 3) { /* r if present */
- bld.MOV(sources[length], coordinate);
- coordinate = offset(coordinate, bld, 1);
- length++;
- }
-
- coordinate_done = true;
- }
- break;
- }
-
- /* Set up the coordinate (except for cases where it was done above) */
- if (!coordinate_done) {
- for (int i = 0; i < coord_components; i++) {
- bld.MOV(sources[length], coordinate);
- coordinate = offset(coordinate, bld, 1);
- length++;
- }
- }
-
- int mlen;
- if (reg_width == 2)
- mlen = length * reg_width - header_size;
- else
- mlen = length * reg_width;
-
- fs_reg src_payload = fs_reg(GRF, alloc.allocate(mlen),
- BRW_REGISTER_TYPE_F, dispatch_width);
- bld.LOAD_PAYLOAD(src_payload, sources, length, header_size);
-
- /* Generate the SEND */
- enum opcode opcode;
- switch (op) {
- case ir_tex: opcode = SHADER_OPCODE_TEX; break;
- case ir_txb: opcode = FS_OPCODE_TXB; break;
- case ir_txl: opcode = SHADER_OPCODE_TXL; break;
- case ir_txd: opcode = SHADER_OPCODE_TXD; break;
- case ir_txf: opcode = SHADER_OPCODE_TXF; break;
- case ir_txf_ms: opcode = SHADER_OPCODE_TXF_CMS; break;
- case ir_txs: opcode = SHADER_OPCODE_TXS; break;
- case ir_query_levels: opcode = SHADER_OPCODE_TXS; break;
- case ir_lod: opcode = SHADER_OPCODE_LOD; break;
- case ir_tg4:
- if (has_nonconstant_offset)
- opcode = SHADER_OPCODE_TG4_OFFSET;
- else
- opcode = SHADER_OPCODE_TG4;
- break;
- default:
- unreachable("not reached");
- }
- fs_inst *inst = bld.emit(opcode, dst, src_payload, sampler);
- inst->base_mrf = -1;
- inst->mlen = mlen;
- inst->header_size = header_size;
- inst->regs_written = 4 * reg_width;
-
- if (inst->mlen > MAX_SAMPLER_MESSAGE_SIZE) {
- fail("Message length >" STRINGIFY(MAX_SAMPLER_MESSAGE_SIZE)
- " disallowed by hardware\n");
- }
-
- return inst;
-}
-
fs_reg
fs_visitor::rescale_texcoord(fs_reg coordinate, int coord_components,
bool is_rect, uint32_t sampler, int texunit)
/* Sample from the MCS surface attached to this multisample texture. */
fs_reg
-fs_visitor::emit_mcs_fetch(fs_reg coordinate, int components, fs_reg sampler)
+fs_visitor::emit_mcs_fetch(const fs_reg &coordinate, unsigned components,
+ const fs_reg &sampler)
{
- int reg_width = dispatch_width / 8;
- fs_reg payload = fs_reg(GRF, alloc.allocate(components * reg_width),
- BRW_REGISTER_TYPE_F, dispatch_width);
- fs_reg dest = vgrf(glsl_type::uvec4_type);
- fs_reg *sources = ralloc_array(mem_ctx, fs_reg, components);
-
- /* parameters are: u, v, r; missing parameters are treated as zero */
- for (int i = 0; i < components; i++) {
- sources[i] = vgrf(glsl_type::float_type);
- bld.MOV(retype(sources[i], BRW_REGISTER_TYPE_D), coordinate);
- coordinate = offset(coordinate, bld, 1);
- }
-
- bld.LOAD_PAYLOAD(payload, sources, components, 0);
+ const fs_reg dest = vgrf(glsl_type::uvec4_type);
+ const fs_reg srcs[] = {
+ coordinate, fs_reg(), fs_reg(), fs_reg(), fs_reg(), fs_reg(),
+ sampler, fs_reg(), fs_reg(components), fs_reg(0)
+ };
+ fs_inst *inst = bld.emit(SHADER_OPCODE_TXF_MCS_LOGICAL, dest, srcs,
+ ARRAY_SIZE(srcs));
- fs_inst *inst = bld.emit(SHADER_OPCODE_TXF_MCS, dest, payload, sampler);
- inst->base_mrf = -1;
- inst->mlen = components * reg_width;
- inst->header_size = 0;
- inst->regs_written = 4 * reg_width; /* we only care about one reg of
- * response, but the sampler always
- * writes 4/8
- */
+ /* We only care about one reg of response, but the sampler always writes
+ * 4/8.
+ */
+ inst->regs_written = 4 * dispatch_width / 8;
return dest;
}
}
}
+ if (op == ir_query_levels) {
+ /* textureQueryLevels() is implemented in terms of TXS so we need to
+ * pass a valid LOD argument.
+ */
+ assert(lod.file == BAD_FILE);
+ lod = fs_reg(0u);
+ }
+
if (coordinate.file != BAD_FILE) {
/* FINISHME: Texture coordinate rescaling doesn't work with non-constant
* samplers. This should only be a problem with GL_CLAMP on Gen7.
* samples, so don't worry about them.
*/
fs_reg dst = vgrf(glsl_type::get_instance(dest_type->base_type, 4, 1));
+ const fs_reg srcs[] = {
+ coordinate, shadow_c, lod, lod2,
+ sample_index, mcs, sampler_reg, offset_value,
+ fs_reg(coord_components), fs_reg(grad_components)
+ };
+ enum opcode opcode;
- if (devinfo->gen >= 7) {
- inst = emit_texture_gen7(op, dst, coordinate, coord_components,
- shadow_c, lod, lod2, grad_components,
- sample_index, mcs, sampler_reg,
- offset_value);
- } else if (devinfo->gen >= 5) {
- inst = emit_texture_gen5(op, dst, coordinate, coord_components,
- shadow_c, lod, lod2, grad_components,
- sample_index, sampler,
- offset_value.file != BAD_FILE);
- } else if (dispatch_width == 16) {
- inst = emit_texture_gen4_simd16(op, dst, coordinate, coord_components,
- shadow_c, lod, sampler);
- } else {
- inst = emit_texture_gen4(op, dst, coordinate, coord_components,
- shadow_c, lod, lod2, grad_components,
- sampler);
+ switch (op) {
+ case ir_tex:
+ opcode = SHADER_OPCODE_TEX_LOGICAL;
+ break;
+ case ir_txb:
+ opcode = FS_OPCODE_TXB_LOGICAL;
+ break;
+ case ir_txl:
+ opcode = SHADER_OPCODE_TXL_LOGICAL;
+ break;
+ case ir_txd:
+ opcode = SHADER_OPCODE_TXD_LOGICAL;
+ break;
+ case ir_txf:
+ opcode = SHADER_OPCODE_TXF_LOGICAL;
+ break;
+ case ir_txf_ms:
+ opcode = SHADER_OPCODE_TXF_CMS_LOGICAL;
+ break;
+ case ir_txs:
+ case ir_query_levels:
+ opcode = SHADER_OPCODE_TXS_LOGICAL;
+ break;
+ case ir_lod:
+ opcode = SHADER_OPCODE_LOD_LOGICAL;
+ break;
+ case ir_tg4:
+ opcode = (offset_value.file != BAD_FILE && offset_value.file != IMM ?
+ SHADER_OPCODE_TG4_OFFSET_LOGICAL : SHADER_OPCODE_TG4_LOGICAL);
+ break;
+ default:
+ unreachable("Invalid texture opcode.");
}
+ inst = bld.emit(opcode, dst, srcs, ARRAY_SIZE(srcs));
+ inst->regs_written = 4 * dispatch_width / 8;
+
if (shadow_c.file != BAD_FILE)
inst->shadow_compare = true;
bld.emit(SHADER_OPCODE_INT_QUOTIENT, fixed_depth, depth, fs_reg(6));
fs_reg *fixed_payload = ralloc_array(mem_ctx, fs_reg, inst->regs_written);
- int components = inst->regs_written / (dst.width / 8);
+ int components = inst->regs_written / (inst->exec_size / 8);
for (int i = 0; i < components; i++) {
if (i == 2) {
fixed_payload[i] = fixed_depth;
return false;
}
-void
-fs_visitor::emit_untyped_atomic(unsigned atomic_op, unsigned surf_index,
- fs_reg dst, fs_reg offset, fs_reg src0,
- fs_reg src1)
-{
- int reg_width = dispatch_width / 8;
- int length = 0;
-
- fs_reg *sources = ralloc_array(mem_ctx, fs_reg, 4);
-
- sources[0] = fs_reg(GRF, alloc.allocate(1), BRW_REGISTER_TYPE_UD);
- /* Initialize the sample mask in the message header. */
- bld.exec_all().MOV(sources[0], fs_reg(0u));
-
- if (stage == MESA_SHADER_FRAGMENT) {
- if (((brw_wm_prog_data*)this->prog_data)->uses_kill) {
- bld.exec_all()
- .MOV(component(sources[0], 7), brw_flag_reg(0, 1));
- } else {
- bld.exec_all()
- .MOV(component(sources[0], 7),
- retype(brw_vec1_grf(1, 7), BRW_REGISTER_TYPE_UD));
- }
- } else {
- /* The execution mask is part of the side-band information sent together with
- * the message payload to the data port. It's implicitly ANDed with the sample
- * mask sent in the header to compute the actual set of channels that execute
- * the atomic operation.
- */
- assert(stage == MESA_SHADER_VERTEX || stage == MESA_SHADER_COMPUTE);
- bld.exec_all()
- .MOV(component(sources[0], 7), fs_reg(0xffffu));
- }
- length++;
-
- /* Set the atomic operation offset. */
- sources[1] = vgrf(glsl_type::uint_type);
- bld.MOV(sources[1], offset);
- length++;
-
- /* Set the atomic operation arguments. */
- if (src0.file != BAD_FILE) {
- sources[length] = vgrf(glsl_type::uint_type);
- bld.MOV(sources[length], src0);
- length++;
- }
-
- if (src1.file != BAD_FILE) {
- sources[length] = vgrf(glsl_type::uint_type);
- bld.MOV(sources[length], src1);
- length++;
- }
-
- int mlen = 1 + (length - 1) * reg_width;
- fs_reg src_payload = fs_reg(GRF, alloc.allocate(mlen),
- BRW_REGISTER_TYPE_UD, dispatch_width);
- bld.LOAD_PAYLOAD(src_payload, sources, length, 1);
-
- /* Emit the instruction. */
- fs_inst *inst = bld.emit(SHADER_OPCODE_UNTYPED_ATOMIC, dst, src_payload,
- fs_reg(surf_index), fs_reg(atomic_op));
- inst->mlen = mlen;
-}
-
-void
-fs_visitor::emit_untyped_surface_read(unsigned surf_index, fs_reg dst,
- fs_reg offset)
-{
- int reg_width = dispatch_width / 8;
-
- fs_reg *sources = ralloc_array(mem_ctx, fs_reg, 2);
-
- sources[0] = fs_reg(GRF, alloc.allocate(1), BRW_REGISTER_TYPE_UD);
- /* Initialize the sample mask in the message header. */
- bld.exec_all()
- .MOV(sources[0], fs_reg(0u));
-
- if (stage == MESA_SHADER_FRAGMENT) {
- if (((brw_wm_prog_data*)this->prog_data)->uses_kill) {
- bld.exec_all()
- .MOV(component(sources[0], 7), brw_flag_reg(0, 1));
- } else {
- bld.exec_all()
- .MOV(component(sources[0], 7),
- retype(brw_vec1_grf(1, 7), BRW_REGISTER_TYPE_UD));
- }
- } else {
- /* The execution mask is part of the side-band information sent together with
- * the message payload to the data port. It's implicitly ANDed with the sample
- * mask sent in the header to compute the actual set of channels that execute
- * the atomic operation.
- */
- assert(stage == MESA_SHADER_VERTEX || stage == MESA_SHADER_COMPUTE);
- bld.exec_all()
- .MOV(component(sources[0], 7), fs_reg(0xffffu));
- }
-
- /* Set the surface read offset. */
- sources[1] = vgrf(glsl_type::uint_type);
- bld.MOV(sources[1], offset);
-
- int mlen = 1 + reg_width;
- fs_reg src_payload = fs_reg(GRF, alloc.allocate(mlen),
- BRW_REGISTER_TYPE_UD, dispatch_width);
- fs_inst *inst = bld.LOAD_PAYLOAD(src_payload, sources, 2, 1);
-
- /* Emit the instruction. */
- inst = bld.emit(SHADER_OPCODE_UNTYPED_SURFACE_READ, dst, src_payload,
- fs_reg(surf_index), fs_reg(1));
- inst->mlen = mlen;
-}
-
/** Emits a dummy fragment shader consisting of magenta for bringup purposes. */
void
fs_visitor::emit_dummy_fs()
/* Everyone's favorite color. */
const float color[4] = { 1.0, 0.0, 1.0, 0.0 };
for (int i = 0; i < 4; i++) {
- bld.MOV(fs_reg(MRF, 2 + i * reg_width, BRW_REGISTER_TYPE_F,
- dispatch_width), fs_reg(color[i]));
+ bld.MOV(fs_reg(MRF, 2 + i * reg_width, BRW_REGISTER_TYPE_F),
+ fs_reg(color[i]));
}
fs_inst *write;
* compute our pixel centers.
*/
fs_reg int_pixel_xy(GRF, alloc.allocate(dispatch_width / 8),
- BRW_REGISTER_TYPE_UW, dispatch_width * 2);
- fs_inst *add =
- new (mem_ctx) fs_inst(BRW_OPCODE_ADD, dispatch_width * 2,
- int_pixel_xy,
- fs_reg(stride(suboffset(g1_uw, 4), 1, 4, 0)),
- fs_reg(brw_imm_v(0x11001010)));
- abld.exec_all().emit(add);
+ BRW_REGISTER_TYPE_UW);
+
+ const fs_builder dbld = abld.exec_all().group(dispatch_width * 2, 0);
+ dbld.ADD(int_pixel_xy,
+ fs_reg(stride(suboffset(g1_uw, 4), 1, 4, 0)),
+ fs_reg(brw_imm_v(0x11001010)));
this->pixel_x = vgrf(glsl_type::float_type);
this->pixel_y = vgrf(glsl_type::float_type);
}
}
-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;
- 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++;
- }
-
- prog_data->uses_omask =
- prog->OutputsWritten & BITFIELD64_BIT(FRAG_RESULT_SAMPLE_MASK);
- if (prog_data->uses_omask) {
- assert(this->sample_mask.file != BAD_FILE);
- /* Hand over gl_SampleMask. Only lower 16 bits are relevant. Since
- * it's unsinged single words, one vgrf is always 16-wide.
- */
- sources[length] = fs_reg(GRF, alloc.allocate(1),
- BRW_REGISTER_TYPE_UW, 16);
- bld.exec_all().annotate("FB write oMask")
- .emit(FS_OPCODE_SET_OMASK, sources[length], this->sample_mask);
- length++;
- }
- payload_header_size = length;
-
- if (color0.file == BAD_FILE) {
- /* Even if there's no color buffers enabled, we still need to send
- * alpha out the pipeline to our null renderbuffer to support
- * alpha-testing, alpha-to-coverage, and so on.
- */
- if (this->outputs[0].file != BAD_FILE)
- setup_color_payload(&sources[length + 3],
- offset(this->outputs[0], bld, 3),
- 1, exec_size, false);
- length += 4;
- } else if (color1.file == BAD_FILE) {
- if (src0_alpha.file != BAD_FILE) {
- 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;
- } else {
- setup_color_payload(&sources[length], color0, components,
- exec_size, use_2nd_half);
- length += 4;
- 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 (devinfo->gen == 6) {
- /* For outputting oDepth on gen6, SIMD8 writes have to be
- * used. This would require SIMD8 moves of each half to
- * message regs, kind of like pre-gen5 SIMD16 FB writes.
- * Just bail on doing so for now.
- */
- no16("Missing support for simd16 depth writes on gen6\n");
- }
-
- 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));
-
- const fs_builder ubld = bld.group(exec_size, use_2nd_half);
- 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, exec_size);
- 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, exec_size),
- 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;
}
brw_wm_prog_key *key = (brw_wm_prog_key*) this->key;
fs_inst *inst = NULL;
+
+ if (source_depth_to_render_target && devinfo->gen == 6) {
+ /* For outputting oDepth on gen6, SIMD8 writes have to be used. This
+ * would require SIMD8 moves of each half to message regs, e.g. by using
+ * the SIMD lowering pass. Unfortunately this is more difficult than it
+ * sounds because the SIMD8 single-source message lacks channel selects
+ * for the second and third subspans.
+ */
+ no16("Missing support for simd16 depth writes on gen6\n");
+ }
+
if (do_dual_src) {
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;
}
}
* alpha out the pipeline to our null renderbuffer to support
* alpha-testing, alpha-to-coverage, and so on.
*/
- inst = emit_single_fb_write(bld, reg_undef, reg_undef, reg_undef, 0,
- dispatch_width);
+ /* FINISHME: Factor out this frequently recurring pattern into a
+ * helper function.
+ */
+ const fs_reg srcs[] = { reg_undef, reg_undef,
+ reg_undef, offset(this->outputs[0], bld, 3) };
+ 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);
inst->target = 0;
}
if (flush) {
fs_reg *payload_sources = ralloc_array(mem_ctx, fs_reg, length + 1);
fs_reg payload = fs_reg(GRF, alloc.allocate(length + 1),
- BRW_REGISTER_TYPE_F, dispatch_width);
+ BRW_REGISTER_TYPE_F);
payload_sources[0] =
fs_reg(retype(brw_vec8_grf(1, 0), BRW_REGISTER_TYPE_UD));
*/
struct brw_reg g0 = retype(brw_vec8_grf(0, 0), BRW_REGISTER_TYPE_UD);
fs_reg payload = fs_reg(GRF, alloc.allocate(1), BRW_REGISTER_TYPE_UD);
- bld.exec_all().MOV(payload, g0);
+ bld.group(8, 0).exec_all().MOV(payload, g0);
/* Send a message to the thread spawner to terminate the thread. */
fs_inst *inst = bld.exec_all()
this->nir_locals = NULL;
this->nir_ssa_values = NULL;
- this->nir_globals = NULL;
memset(&this->payload, 0, sizeof(this->payload));
memset(this->outputs, 0, sizeof(this->outputs));
projects / mesa.git / blobdiff