#include "glsl/ir_optimization.h"
#include "program/sampler.h"
+using namespace brw;
fs_reg *
fs_visitor::emit_vs_system_value(int location)
return reg;
}
-fs_inst *
-fs_visitor::emit_lrp(const fs_reg &dst, const fs_reg &x, const fs_reg &y,
- const fs_reg &a)
-{
- if (devinfo->gen < 6) {
- /* We can't use the LRP instruction. Emit x*(1-a) + y*a. */
- fs_reg y_times_a = vgrf(glsl_type::float_type);
- fs_reg one_minus_a = vgrf(glsl_type::float_type);
- fs_reg x_times_one_minus_a = vgrf(glsl_type::float_type);
-
- emit(MUL(y_times_a, y, a));
-
- fs_reg negative_a = a;
- negative_a.negate = !a.negate;
- emit(ADD(one_minus_a, negative_a, fs_reg(1.0f)));
- emit(MUL(x_times_one_minus_a, x, one_minus_a));
-
- return emit(ADD(dst, x_times_one_minus_a, y_times_a));
- } else {
- /* The LRP instruction actually does op1 * op0 + op2 * (1 - op0), so
- * we need to reorder the operands.
- */
- return emit(LRP(dst, a, y, x));
- }
-}
-
-void
-fs_visitor::emit_uniformize(const fs_reg &dst, const fs_reg &src)
-{
- const fs_reg chan_index = vgrf(glsl_type::uint_type);
-
- emit(SHADER_OPCODE_FIND_LIVE_CHANNEL, component(chan_index, 0))
- ->force_writemask_all = true;
- emit(SHADER_OPCODE_BROADCAST, component(dst, 0),
- src, component(chan_index, 0))
- ->force_writemask_all = true;
-}
-
-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++) {
- emit(MOV(fs_reg(MRF, base_mrf + mlen + i), coordinate));
- coordinate = offset(coordinate, 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++) {
- emit(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.
- */
- emit(MOV(fs_reg(MRF, base_mrf + mlen), fs_reg(0.0f)));
- mlen++;
- } else if (op == ir_txb || op == ir_txl) {
- emit(MOV(fs_reg(MRF, base_mrf + mlen), lod));
- mlen++;
- } else {
- unreachable("Should not get here.");
- }
-
- emit(MOV(fs_reg(MRF, base_mrf + mlen), shadow_c));
- mlen++;
- } else if (op == ir_tex) {
- for (int i = 0; i < coord_components; i++) {
- emit(MOV(fs_reg(MRF, base_mrf + mlen + i), coordinate));
- coordinate = offset(coordinate, 1);
- }
- /* zero the others. */
- for (int i = coord_components; i<3; i++) {
- emit(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++) {
- emit(MOV(fs_reg(MRF, base_mrf + mlen + i), coordinate));
- coordinate = offset(coordinate, 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++) {
- emit(MOV(fs_reg(MRF, base_mrf + mlen), dPdx));
- dPdx = offset(dPdx, 1);
- }
- mlen += MAX2(grad_components, 2);
-
- for (int i = 0; i < grad_components; i++) {
- emit(MOV(fs_reg(MRF, base_mrf + mlen), dPdy));
- dPdy = offset(dPdy, 1);
- }
- mlen += MAX2(grad_components, 2);
- } else if (op == ir_txs) {
- /* There's no SIMD8 resinfo message on Gen4. Use SIMD16 instead. */
- simd16 = true;
- emit(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++) {
- emit(MOV(fs_reg(MRF, base_mrf + mlen + i * 2, coordinate.type),
- coordinate));
- coordinate = offset(coordinate, 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++) {
- emit(MOV(fs_reg(MRF, base_mrf + mlen + i * 2), fs_reg(0.0f)));
- }
-
- /* lod/bias appears after u/v/r. */
- mlen += 6;
-
- emit(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 = 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++) {
- emit(MOV(orig_dst, dst));
- orig_dst = offset(orig_dst, 1);
- dst = offset(dst, 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;
-
- 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++) {
- emit(MOV(retype(offset(message, i), coordinate.type), coordinate));
- coordinate = offset(coordinate, 1);
- }
-
- fs_reg msg_end = offset(message, vector_elements);
-
- /* Messages other than sample and ld require all three components */
- if (has_lod || shadow_c.file != BAD_FILE) {
- for (int i = vector_elements; i < 3; i++) {
- emit(MOV(offset(message, i), fs_reg(0.0f)));
- }
- }
-
- if (has_lod) {
- fs_reg msg_lod = retype(offset(message, 3), op == ir_txf ?
- BRW_REGISTER_TYPE_UD : BRW_REGISTER_TYPE_F);
- emit(MOV(msg_lod, lod));
- msg_end = offset(msg_lod, 1);
- }
-
- if (shadow_c.file != BAD_FILE) {
- fs_reg msg_ref = offset(message, 3 + has_lod);
- emit(MOV(msg_ref, shadow_c));
- msg_end = offset(msg_ref, 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 = 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++) {
- emit(MOV(retype(offset(msg_coords, i), coordinate.type), coordinate));
- coordinate = offset(coordinate, 1);
- }
- fs_reg msg_end = offset(msg_coords, vector_elements);
- fs_reg msg_lod = offset(msg_coords, 4);
-
- if (shadow_c.file != BAD_FILE) {
- fs_reg msg_shadow = msg_lod;
- emit(MOV(msg_shadow, shadow_c));
- msg_lod = offset(msg_shadow, 1);
- msg_end = msg_lod;
- }
-
- enum opcode opcode;
- switch (op) {
- case ir_tex:
- opcode = SHADER_OPCODE_TEX;
- break;
- case ir_txb:
- emit(MOV(msg_lod, lod));
- msg_end = offset(msg_lod, 1);
-
- opcode = FS_OPCODE_TXB;
- break;
- case ir_txl:
- emit(MOV(msg_lod, lod));
- msg_end = offset(msg_lod, 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++) {
- emit(MOV(msg_end, lod));
- lod = offset(lod, 1);
- msg_end = offset(msg_end, 1);
-
- emit(MOV(msg_end, lod2));
- lod2 = offset(lod2, 1);
- msg_end = offset(msg_end, 1);
- }
-
- opcode = SHADER_OPCODE_TXD;
- break;
- }
- case ir_txs:
- msg_lod = retype(msg_end, BRW_REGISTER_TYPE_UD);
- emit(MOV(msg_lod, lod));
- msg_end = offset(msg_lod, 1);
-
- opcode = SHADER_OPCODE_TXS;
- break;
- case ir_query_levels:
- msg_lod = msg_end;
- emit(MOV(retype(msg_lod, BRW_REGISTER_TYPE_UD), fs_reg(0u)));
- msg_end = offset(msg_lod, 1);
-
- opcode = SHADER_OPCODE_TXS;
- break;
- case ir_txf:
- msg_lod = offset(msg_coords, 3);
- emit(MOV(retype(msg_lod, BRW_REGISTER_TYPE_UD), lod));
- msg_end = offset(msg_lod, 1);
-
- opcode = SHADER_OPCODE_TXF;
- break;
- case ir_txf_ms:
- msg_lod = offset(msg_coords, 3);
- /* lod */
- emit(MOV(retype(msg_lod, BRW_REGISTER_TYPE_UD), fs_reg(0u)));
- /* sample index */
- emit(MOV(retype(offset(msg_lod, 1), BRW_REGISTER_TYPE_UD), sample_index));
- msg_end = offset(msg_lod, 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 = 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) {
- emit(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:
- emit(MOV(sources[length], lod));
- length++;
- break;
- case ir_txl:
- emit(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++) {
- emit(MOV(sources[length], coordinate));
- coordinate = offset(coordinate, 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) {
- emit(MOV(sources[length], lod));
- lod = offset(lod, 1);
- length++;
-
- emit(MOV(sources[length], lod2));
- lod2 = offset(lod2, 1);
- length++;
- }
- }
-
- coordinate_done = true;
- break;
- }
- case ir_txs:
- emit(MOV(retype(sources[length], BRW_REGISTER_TYPE_UD), lod));
- length++;
- break;
- case ir_query_levels:
- emit(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
- */
-
- emit(MOV(retype(sources[length], BRW_REGISTER_TYPE_D), coordinate));
- coordinate = offset(coordinate, 1);
- length++;
-
- if (devinfo->gen >= 9) {
- if (coord_components >= 2) {
- emit(MOV(retype(sources[length], BRW_REGISTER_TYPE_D), coordinate));
- coordinate = offset(coordinate, 1);
- }
- length++;
- }
-
- emit(MOV(retype(sources[length], BRW_REGISTER_TYPE_D), lod));
- length++;
-
- for (int i = devinfo->gen >= 9 ? 2 : 1; i < coord_components; i++) {
- emit(MOV(retype(sources[length], BRW_REGISTER_TYPE_D), coordinate));
- coordinate = offset(coordinate, 1);
- length++;
- }
-
- coordinate_done = true;
- break;
- case ir_txf_ms:
- emit(MOV(retype(sources[length], BRW_REGISTER_TYPE_UD), sample_index));
- length++;
-
- /* data from the multisample control surface */
- emit(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++) {
- emit(MOV(retype(sources[length], BRW_REGISTER_TYPE_D), coordinate));
- coordinate = offset(coordinate, 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 */
- emit(MOV(sources[length], coordinate));
- coordinate = offset(coordinate, 1);
- length++;
- }
-
- for (int i = 0; i < 2; i++) { /* offu, offv */
- emit(MOV(retype(sources[length], BRW_REGISTER_TYPE_D), offset_value));
- offset_value = offset(offset_value, 1);
- length++;
- }
-
- if (coord_components == 3) { /* r if present */
- emit(MOV(sources[length], coordinate));
- coordinate = offset(coordinate, 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++) {
- emit(MOV(sources[length], coordinate));
- coordinate = offset(coordinate, 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);
- emit(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 = 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)
{
- fs_inst *inst = NULL;
bool needs_gl_clamp = true;
fs_reg scale_x, scale_y;
fs_reg src = coordinate;
coordinate = dst;
- emit(MUL(dst, src, scale_x));
- dst = offset(dst, 1);
- src = offset(src, 1);
- emit(MUL(dst, src, scale_y));
+ bld.MUL(dst, src, scale_x);
+ dst = offset(dst, bld, 1);
+ src = offset(src, bld, 1);
+ bld.MUL(dst, src, scale_y);
} else if (is_rect) {
/* On gen6+, the sampler handles the rectangle coordinates
* natively, without needing rescaling. But that means we have
for (int i = 0; i < 2; i++) {
if (key_tex->gl_clamp_mask[i] & (1 << sampler)) {
fs_reg chan = coordinate;
- chan = offset(chan, i);
+ chan = offset(chan, bld, i);
- inst = emit(BRW_OPCODE_SEL, chan, chan, fs_reg(0.0f));
- inst->conditional_mod = BRW_CONDITIONAL_GE;
+ set_condmod(BRW_CONDITIONAL_GE,
+ bld.emit(BRW_OPCODE_SEL, chan, chan, fs_reg(0.0f)));
/* Our parameter comes in as 1.0/width or 1.0/height,
* because that's what people normally want for doing
* parameter type, so just invert back.
*/
fs_reg limit = vgrf(glsl_type::float_type);
- emit(MOV(limit, i == 0 ? scale_x : scale_y));
- emit(SHADER_OPCODE_RCP, limit, limit);
+ bld.MOV(limit, i == 0 ? scale_x : scale_y);
+ bld.emit(SHADER_OPCODE_RCP, limit, limit);
- inst = emit(BRW_OPCODE_SEL, chan, chan, limit);
- inst->conditional_mod = BRW_CONDITIONAL_L;
+ set_condmod(BRW_CONDITIONAL_L,
+ bld.emit(BRW_OPCODE_SEL, chan, chan, limit));
}
}
}
for (int i = 0; i < MIN2(coord_components, 3); i++) {
if (key_tex->gl_clamp_mask[i] & (1 << sampler)) {
fs_reg chan = coordinate;
- chan = offset(chan, i);
-
- fs_inst *inst = emit(MOV(chan, chan));
- inst->saturate = true;
+ chan = offset(chan, bld, i);
+ set_saturate(true, bld.MOV(chan, chan));
}
}
}
/* 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);
- emit(MOV(retype(sources[i], BRW_REGISTER_TYPE_D), coordinate));
- coordinate = offset(coordinate, 1);
- }
-
- emit(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 = 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;
}
this->result = res;
for (int i=0; i<4; i++) {
- emit(MOV(res, fs_reg(swiz == SWIZZLE_ZERO ? 0.0f : 1.0f)));
- res = offset(res, 1);
+ bld.MOV(res, fs_reg(swiz == SWIZZLE_ZERO ? 0.0f : 1.0f));
+ res = offset(res, bld, 1);
}
return;
}
}
+ 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;
/* fixup #layers for cube map arrays */
if (op == ir_txs && is_cube_array) {
- fs_reg depth = offset(dst, 2);
+ fs_reg depth = offset(dst, bld, 2);
fs_reg fixed_depth = vgrf(glsl_type::int_type);
- emit_math(SHADER_OPCODE_INT_QUOTIENT, fixed_depth, depth, fs_reg(6));
+ 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;
} else {
- fixed_payload[i] = offset(dst, i);
+ fixed_payload[i] = offset(dst, bld, i);
}
}
- emit(LOAD_PAYLOAD(dst, fixed_payload, components, 0));
+ bld.LOAD_PAYLOAD(dst, fixed_payload, components, 0);
}
swizzle_result(op, dest_type->vector_elements, dst, sampler);
for (int i = 0; i < 4; i++) {
fs_reg dst_f = retype(dst, BRW_REGISTER_TYPE_F);
/* Convert from UNORM to UINT */
- emit(MUL(dst_f, dst_f, fs_reg((float)((1 << width) - 1))));
- emit(MOV(dst, dst_f));
+ bld.MUL(dst_f, dst_f, fs_reg((float)((1 << width) - 1)));
+ bld.MOV(dst, dst_f);
if (wa & WA_SIGN) {
/* Reinterpret the UINT value as a signed INT value by
* shifting the sign bit into place, then shifting back
* preserving sign.
*/
- emit(SHL(dst, dst, fs_reg(32 - width)));
- emit(ASR(dst, dst, fs_reg(32 - width)));
+ bld.SHL(dst, dst, fs_reg(32 - width));
+ bld.ASR(dst, dst, fs_reg(32 - width));
}
- dst = offset(dst, 1);
+ dst = offset(dst, bld, 1);
}
}
{
if (op == ir_query_levels) {
/* # levels is in .w */
- this->result = offset(orig_val, 3);
+ this->result = offset(orig_val, bld, 3);
return;
}
for (int i = 0; i < 4; i++) {
int swiz = GET_SWZ(key_tex->swizzles[sampler], i);
fs_reg l = swizzled_result;
- l = offset(l, i);
+ l = offset(l, bld, i);
if (swiz == SWIZZLE_ZERO) {
- emit(MOV(l, fs_reg(0.0f)));
+ bld.MOV(l, fs_reg(0.0f));
} else if (swiz == SWIZZLE_ONE) {
- emit(MOV(l, fs_reg(1.0f)));
+ bld.MOV(l, fs_reg(1.0f));
} else {
- emit(MOV(l, offset(orig_val,
- GET_SWZ(key_tex->swizzles[sampler], i))));
+ bld.MOV(l, offset(orig_val, bld,
+ GET_SWZ(key_tex->swizzles[sampler], i)));
}
}
this->result = swizzled_result;
if (src0.file == IMM) {
src0 = vgrf(glsl_type::float_type);
src0.type = then_mov->src[0].type;
- emit(MOV(src0, then_mov->src[0]));
+ bld.MOV(src0, then_mov->src[0]);
}
- fs_inst *sel;
if (if_inst->conditional_mod) {
/* Sandybridge-specific IF with embedded comparison */
- emit(CMP(reg_null_d, if_inst->src[0], if_inst->src[1],
- if_inst->conditional_mod));
- sel = emit(BRW_OPCODE_SEL, then_mov->dst, src0, else_mov->src[0]);
- sel->predicate = BRW_PREDICATE_NORMAL;
+ bld.CMP(bld.null_reg_d(), if_inst->src[0], if_inst->src[1],
+ if_inst->conditional_mod);
+ set_predicate(BRW_PREDICATE_NORMAL,
+ bld.emit(BRW_OPCODE_SEL, then_mov->dst,
+ src0, else_mov->src[0]));
} else {
/* Separate CMP and IF instructions */
- sel = emit(BRW_OPCODE_SEL, then_mov->dst, src0, else_mov->src[0]);
- sel->predicate = if_inst->predicate;
- sel->predicate_inverse = if_inst->predicate_inverse;
+ set_predicate_inv(if_inst->predicate, if_inst->predicate_inverse,
+ bld.emit(BRW_OPCODE_SEL, then_mov->dst,
+ src0, else_mov->src[0]));
}
return true;
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. */
- emit(MOV(sources[0], fs_reg(0u)))
- ->force_writemask_all = true;
-
- if (stage == MESA_SHADER_FRAGMENT) {
- if (((brw_wm_prog_data*)this->prog_data)->uses_kill) {
- emit(MOV(component(sources[0], 7), brw_flag_reg(0, 1)))
- ->force_writemask_all = true;
- } else {
- emit(MOV(component(sources[0], 7),
- retype(brw_vec1_grf(1, 7), BRW_REGISTER_TYPE_UD)))
- ->force_writemask_all = true;
- }
- } 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);
- emit(MOV(component(sources[0], 7),
- fs_reg(0xffffu)))->force_writemask_all = true;
- }
- length++;
-
- /* Set the atomic operation offset. */
- sources[1] = vgrf(glsl_type::uint_type);
- emit(MOV(sources[1], offset));
- length++;
-
- /* Set the atomic operation arguments. */
- if (src0.file != BAD_FILE) {
- sources[length] = vgrf(glsl_type::uint_type);
- emit(MOV(sources[length], src0));
- length++;
- }
-
- if (src1.file != BAD_FILE) {
- sources[length] = vgrf(glsl_type::uint_type);
- emit(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);
- emit(LOAD_PAYLOAD(src_payload, sources, length, 1));
-
- /* Emit the instruction. */
- fs_inst *inst = 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. */
- emit(MOV(sources[0], fs_reg(0u)))
- ->force_writemask_all = true;
-
- if (stage == MESA_SHADER_FRAGMENT) {
- if (((brw_wm_prog_data*)this->prog_data)->uses_kill) {
- emit(MOV(component(sources[0], 7), brw_flag_reg(0, 1)))
- ->force_writemask_all = true;
- } else {
- emit(MOV(component(sources[0], 7),
- retype(brw_vec1_grf(1, 7), BRW_REGISTER_TYPE_UD)))
- ->force_writemask_all = true;
- }
- } 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);
- emit(MOV(component(sources[0], 7),
- fs_reg(0xffffu)))->force_writemask_all = true;
- }
-
- /* Set the surface read offset. */
- sources[1] = vgrf(glsl_type::uint_type);
- emit(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 = emit(LOAD_PAYLOAD(src_payload, sources, 2, 1));
-
- /* Emit the instruction. */
- inst = emit(SHADER_OPCODE_UNTYPED_SURFACE_READ, dst, src_payload,
- fs_reg(surf_index), fs_reg(1));
- inst->mlen = mlen;
-}
-
-fs_inst *
-fs_visitor::emit(fs_inst *inst)
-{
- if (dispatch_width == 16 && inst->exec_size == 8)
- inst->force_uncompressed = true;
-
- inst->annotation = this->current_annotation;
- inst->ir = this->base_ir;
-
- this->instructions.push_tail(inst);
-
- return inst;
-}
-
-void
-fs_visitor::emit(exec_list list)
-{
- foreach_in_list_safe(fs_inst, inst, &list) {
- inst->exec_node::remove();
- emit(inst);
- }
-}
-
/** 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++) {
- emit(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;
- write = emit(FS_OPCODE_FB_WRITE);
+ write = bld.emit(FS_OPCODE_FB_WRITE);
write->eot = true;
if (devinfo->gen >= 6) {
write->base_mrf = 2;
{
struct brw_reg g1_uw = retype(brw_vec1_grf(1, 0), BRW_REGISTER_TYPE_UW);
- this->current_annotation = "compute pixel centers";
+ fs_builder abld = bld.annotate("compute pixel centers");
this->pixel_x = vgrf(glsl_type::uint_type);
this->pixel_y = vgrf(glsl_type::uint_type);
this->pixel_x.type = BRW_REGISTER_TYPE_UW;
this->pixel_y.type = BRW_REGISTER_TYPE_UW;
- emit(ADD(this->pixel_x,
+ abld.ADD(this->pixel_x,
fs_reg(stride(suboffset(g1_uw, 4), 2, 4, 0)),
- fs_reg(brw_imm_v(0x10101010))));
- emit(ADD(this->pixel_y,
+ fs_reg(brw_imm_v(0x10101010)));
+ abld.ADD(this->pixel_y,
fs_reg(stride(suboffset(g1_uw, 5), 2, 4, 0)),
- fs_reg(brw_imm_v(0x11001100))));
+ fs_reg(brw_imm_v(0x11001100)));
- this->current_annotation = "compute pixel deltas from v0";
+ abld = bld.annotate("compute pixel deltas from v0");
this->delta_xy[BRW_WM_PERSPECTIVE_PIXEL_BARYCENTRIC] =
vgrf(glsl_type::vec2_type);
const fs_reg ystart(negate(brw_vec1_grf(1, 1)));
if (devinfo->has_pln && dispatch_width == 16) {
- emit(ADD(half(offset(delta_xy, 0), 0), half(this->pixel_x, 0), xstart));
- emit(ADD(half(offset(delta_xy, 0), 1), half(this->pixel_y, 0), ystart));
- emit(ADD(half(offset(delta_xy, 1), 0), half(this->pixel_x, 1), xstart))
- ->force_sechalf = true;
- emit(ADD(half(offset(delta_xy, 1), 1), half(this->pixel_y, 1), ystart))
- ->force_sechalf = true;
+ for (unsigned i = 0; i < 2; i++) {
+ abld.half(i).ADD(half(offset(delta_xy, abld, i), 0),
+ half(this->pixel_x, i), xstart);
+ abld.half(i).ADD(half(offset(delta_xy, abld, i), 1),
+ half(this->pixel_y, i), ystart);
+ }
} else {
- emit(ADD(offset(delta_xy, 0), this->pixel_x, xstart));
- emit(ADD(offset(delta_xy, 1), this->pixel_y, ystart));
+ abld.ADD(offset(delta_xy, abld, 0), this->pixel_x, xstart);
+ abld.ADD(offset(delta_xy, abld, 1), this->pixel_y, ystart);
}
- this->current_annotation = "compute pos.w and 1/pos.w";
+ abld = bld.annotate("compute pos.w and 1/pos.w");
/* Compute wpos.w. It's always in our setup, since it's needed to
* interpolate the other attributes.
*/
this->wpos_w = vgrf(glsl_type::float_type);
- emit(FS_OPCODE_LINTERP, wpos_w, delta_xy, interp_reg(VARYING_SLOT_POS, 3));
+ abld.emit(FS_OPCODE_LINTERP, wpos_w, delta_xy,
+ interp_reg(VARYING_SLOT_POS, 3));
/* Compute the pixel 1/W value from wpos.w. */
this->pixel_w = vgrf(glsl_type::float_type);
- emit_math(SHADER_OPCODE_RCP, this->pixel_w, wpos_w);
- this->current_annotation = NULL;
+ abld.emit(SHADER_OPCODE_RCP, this->pixel_w, wpos_w);
}
/** Emits the interpolation for the varying inputs. */
{
struct brw_reg g1_uw = retype(brw_vec1_grf(1, 0), BRW_REGISTER_TYPE_UW);
- this->current_annotation = "compute pixel centers";
- if (brw->gen >= 8 || dispatch_width == 8) {
+ fs_builder abld = bld.annotate("compute pixel centers");
+ if (devinfo->gen >= 8 || dispatch_width == 8) {
/* The "Register Region Restrictions" page says for BDW (and newer,
* presumably):
*
* compute our pixel centers.
*/
fs_reg int_pixel_xy(GRF, alloc.allocate(dispatch_width / 8),
- BRW_REGISTER_TYPE_UW, dispatch_width * 2);
- emit(ADD(int_pixel_xy,
+ 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))))
- ->force_writemask_all = true;
+ fs_reg(brw_imm_v(0x11001010)));
this->pixel_x = vgrf(glsl_type::float_type);
this->pixel_y = vgrf(glsl_type::float_type);
- emit(FS_OPCODE_PIXEL_X, this->pixel_x, int_pixel_xy);
- emit(FS_OPCODE_PIXEL_Y, this->pixel_y, int_pixel_xy);
+ abld.emit(FS_OPCODE_PIXEL_X, this->pixel_x, int_pixel_xy);
+ abld.emit(FS_OPCODE_PIXEL_Y, this->pixel_y, int_pixel_xy);
} else {
/* The "Register Region Restrictions" page says for SNB, IVB, HSW:
*
fs_reg int_pixel_y = vgrf(glsl_type::uint_type);
int_pixel_x.type = BRW_REGISTER_TYPE_UW;
int_pixel_y.type = BRW_REGISTER_TYPE_UW;
- emit(ADD(int_pixel_x,
+ abld.ADD(int_pixel_x,
fs_reg(stride(suboffset(g1_uw, 4), 2, 4, 0)),
- fs_reg(brw_imm_v(0x10101010))));
- emit(ADD(int_pixel_y,
+ fs_reg(brw_imm_v(0x10101010)));
+ abld.ADD(int_pixel_y,
fs_reg(stride(suboffset(g1_uw, 5), 2, 4, 0)),
- fs_reg(brw_imm_v(0x11001100))));
+ fs_reg(brw_imm_v(0x11001100)));
/* As of gen6, we can no longer mix float and int sources. We have
* to turn the integer pixel centers into floats for their actual
*/
this->pixel_x = vgrf(glsl_type::float_type);
this->pixel_y = vgrf(glsl_type::float_type);
- emit(MOV(this->pixel_x, int_pixel_x));
- emit(MOV(this->pixel_y, int_pixel_y));
+ abld.MOV(this->pixel_x, int_pixel_x);
+ abld.MOV(this->pixel_y, int_pixel_y);
}
- this->current_annotation = "compute pos.w";
+ abld = bld.annotate("compute pos.w");
this->pixel_w = fs_reg(brw_vec8_grf(payload.source_w_reg, 0));
this->wpos_w = vgrf(glsl_type::float_type);
- emit_math(SHADER_OPCODE_RCP, this->wpos_w, this->pixel_w);
+ abld.emit(SHADER_OPCODE_RCP, this->wpos_w, this->pixel_w);
for (int i = 0; i < BRW_WM_BARYCENTRIC_INTERP_MODE_COUNT; ++i) {
uint8_t reg = payload.barycentric_coord_reg[i];
this->delta_xy[i] = fs_reg(brw_vec16_grf(reg, 0));
}
-
- this->current_annotation = NULL;
-}
-
-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 = emit(MOV(offset(tmp, i), offset(color, 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, i), half_idx);
- } else {
- for (unsigned i = 0; i < components; i++)
- dst[i] = offset(color, i);
- }
}
static enum brw_conditional_mod
{
assert(stage == MESA_SHADER_FRAGMENT);
brw_wm_prog_key *key = (brw_wm_prog_key*) this->key;
- this->current_annotation = "Alpha test";
+ const fs_builder abld = bld.annotate("Alpha test");
fs_inst *cmp;
if (key->alpha_test_func == GL_ALWAYS)
/* f0.1 = 0 */
fs_reg some_reg = fs_reg(retype(brw_vec8_grf(0, 0),
BRW_REGISTER_TYPE_UW));
- cmp = emit(CMP(reg_null_f, some_reg, some_reg,
- BRW_CONDITIONAL_NEQ));
+ cmp = abld.CMP(bld.null_reg_f(), some_reg, some_reg,
+ BRW_CONDITIONAL_NEQ);
} else {
/* RT0 alpha */
- fs_reg color = offset(outputs[0], 3);
+ fs_reg color = offset(outputs[0], bld, 3);
/* f0.1 &= func(color, ref) */
- cmp = emit(CMP(reg_null_f, color, fs_reg(key->alpha_test_ref),
- cond_for_alpha_func(key->alpha_test_func)));
+ cmp = abld.CMP(bld.null_reg_f(), color, fs_reg(key->alpha_test_ref),
+ cond_for_alpha_func(key->alpha_test_func));
}
cmp->predicate = BRW_PREDICATE_NORMAL;
cmp->flag_subreg = 1;
}
fs_inst *
-fs_visitor::emit_single_fb_write(fs_reg color0, fs_reg color1,
- fs_reg src0_alpha, unsigned components,
- unsigned exec_size, bool use_2nd_half)
+fs_visitor::emit_single_fb_write(const fs_builder &bld,
+ fs_reg color0, fs_reg color1,
+ 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;
-
- this->current_annotation = "FB write header";
- 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));
- emit(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) {
- this->current_annotation = "FB write 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);
- 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], 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));
-
- 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 = emit(LOAD_PAYLOAD(payload, sources, length, payload_header_size));
- payload.reg = alloc.allocate(load->regs_written);
- load->dst = payload;
- write = emit(FS_OPCODE_FB_WRITE, reg_undef, payload);
- write->base_mrf = -1;
- } else {
- /* Send from the MRF */
- load = emit(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 (brw->gen < 6 && exec_size == 16)
- load->dst.reg |= BRW_MRF_COMPR4;
-
- write = 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 (do_dual_src) {
- this->current_annotation = ralloc_asprintf(this->mem_ctx,
- "FB dual-source write");
- inst = emit_single_fb_write(this->outputs[0], this->dual_src_output,
- reg_undef, 4, 8);
- 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 (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.
*/
- if (dispatch_width == 16) {
- inst = emit_single_fb_write(this->outputs[0], this->dual_src_output,
- reg_undef, 4, 8, true);
- inst->target = 0;
- }
+ 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);
+ inst->target = 0;
prog_data->dual_src_blend = true;
} else {
if (this->outputs[target].file == BAD_FILE)
continue;
- this->current_annotation = ralloc_asprintf(this->mem_ctx,
- "FB write target %d",
- target);
+ const fs_builder abld = bld.annotate(
+ ralloc_asprintf(this->mem_ctx, "FB write target %d", target));
+
fs_reg src0_alpha;
if (devinfo->gen >= 6 && key->replicate_alpha && target != 0)
- src0_alpha = offset(outputs[0], 3);
+ src0_alpha = offset(outputs[0], bld, 3);
- inst = emit_single_fb_write(this->outputs[target], reg_undef,
+ 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(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;
}
inst->eot = true;
- this->current_annotation = NULL;
}
void
-fs_visitor::setup_uniform_clipplane_values()
+fs_visitor::setup_uniform_clipplane_values(gl_clip_plane *clip_planes)
{
- gl_clip_plane *clip_planes = brw_select_clip_planes(ctx);
const struct brw_vue_prog_key *key =
(const struct brw_vue_prog_key *) this->key;
}
}
-void fs_visitor::compute_clip_distance()
+/**
+ * Lower legacy fixed-function and gl_ClipVertex clipping to clip distances.
+ *
+ * This does nothing if the shader uses gl_ClipDistance or user clipping is
+ * disabled altogether.
+ */
+void fs_visitor::compute_clip_distance(gl_clip_plane *clip_planes)
{
struct brw_vue_prog_data *vue_prog_data =
(struct brw_vue_prog_data *) prog_data;
const struct brw_vue_prog_key *key =
(const struct brw_vue_prog_key *) this->key;
+ /* Bail unless some sort of legacy clipping is enabled */
+ if (!key->userclip_active || prog->UsesClipDistanceOut)
+ return;
+
/* From the GLSL 1.30 spec, section 7.1 (Vertex Shader Special Variables):
*
* "If a linked set of shaders forming the vertex stage contains no
if (outputs[clip_vertex].file == BAD_FILE)
return;
- setup_uniform_clipplane_values();
+ setup_uniform_clipplane_values(clip_planes);
- current_annotation = "user clip distances";
+ const fs_builder abld = bld.annotate("user clip distances");
this->outputs[VARYING_SLOT_CLIP_DIST0] = vgrf(glsl_type::vec4_type);
this->outputs[VARYING_SLOT_CLIP_DIST1] = vgrf(glsl_type::vec4_type);
fs_reg output = outputs[VARYING_SLOT_CLIP_DIST0 + i / 4];
output.reg_offset = i & 3;
- emit(MUL(output, outputs[clip_vertex], u));
+ abld.MUL(output, outputs[clip_vertex], u);
for (int j = 1; j < 4; j++) {
u.reg = userplane[i].reg + j;
- emit(MAD(output, output, offset(outputs[clip_vertex], j), u));
+ abld.MAD(output, output, offset(outputs[clip_vertex], bld, j), u);
}
}
}
bool flush;
fs_reg sources[8];
- /* Lower legacy ff and ClipVertex clipping to clip distances */
- if (key->base.userclip_active && !prog->UsesClipDistanceOut)
- compute_clip_distance();
-
/* If we don't have any valid slots to write, just do a minimal urb write
- * send to terminate the shader. */
+ * send to terminate the shader. This includes 1 slot of undefined data,
+ * because it's invalid to write 0 data:
+ *
+ * From the Broadwell PRM, Volume 7: 3D Media GPGPU, Shared Functions -
+ * Unified Return Buffer (URB) > URB_SIMD8_Write and URB_SIMD8_Read >
+ * Write Data Payload:
+ *
+ * "The write data payload can be between 1 and 8 message phases long."
+ */
if (vue_map->slots_valid == 0) {
+ fs_reg payload = fs_reg(GRF, alloc.allocate(2), BRW_REGISTER_TYPE_UD);
+ bld.exec_all().MOV(payload, fs_reg(retype(brw_vec8_grf(1, 0),
+ BRW_REGISTER_TYPE_UD)));
- fs_reg payload = fs_reg(GRF, alloc.allocate(1), BRW_REGISTER_TYPE_UD);
- fs_inst *inst = emit(MOV(payload, fs_reg(retype(brw_vec8_grf(1, 0),
- BRW_REGISTER_TYPE_UD))));
- inst->force_writemask_all = true;
-
- inst = emit(SHADER_OPCODE_URB_WRITE_SIMD8, reg_undef, payload);
+ fs_inst *inst = bld.emit(SHADER_OPCODE_URB_WRITE_SIMD8, reg_undef, payload);
inst->eot = true;
- inst->mlen = 1;
+ inst->mlen = 2;
inst->offset = 1;
return;
}
}
zero = fs_reg(GRF, alloc.allocate(1), BRW_REGISTER_TYPE_UD);
- emit(MOV(zero, fs_reg(0u)));
+ bld.MOV(zero, fs_reg(0u));
sources[length++] = zero;
if (vue_map->slots_valid & VARYING_BIT_LAYER)
*/
for (int i = 0; i < 4; i++) {
reg = fs_reg(GRF, alloc.allocate(1), outputs[varying].type);
- src = offset(this->outputs[varying], i);
- fs_inst *inst = emit(MOV(reg, src));
- inst->saturate = true;
+ src = offset(this->outputs[varying], bld, i);
+ set_saturate(true, bld.MOV(reg, src));
sources[length++] = reg;
}
} else {
for (int i = 0; i < 4; i++)
- sources[length++] = offset(this->outputs[varying], i);
+ sources[length++] = offset(this->outputs[varying], bld, i);
}
break;
}
- current_annotation = "URB write";
+ const fs_builder abld = bld.annotate("URB write");
/* If we've queued up 8 registers of payload (2 VUE slots), if this is
* the last slot or if we need to flush (see BAD_FILE varying case
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));
memcpy(&payload_sources[1], sources, length * sizeof sources[0]);
- emit(LOAD_PAYLOAD(payload, payload_sources, length + 1, 1));
+ abld.LOAD_PAYLOAD(payload, payload_sources, length + 1, 1);
fs_inst *inst =
- emit(SHADER_OPCODE_URB_WRITE_SIMD8, reg_undef, payload);
+ abld.emit(SHADER_OPCODE_URB_WRITE_SIMD8, reg_undef, payload);
inst->eot = last;
inst->mlen = length + 1;
inst->offset = urb_offset;
}
}
-void
-fs_visitor::resolve_ud_negate(fs_reg *reg)
-{
- if (reg->type != BRW_REGISTER_TYPE_UD ||
- !reg->negate)
- return;
-
- fs_reg temp = vgrf(glsl_type::uint_type);
- emit(MOV(temp, *reg));
- *reg = temp;
-}
-
void
fs_visitor::emit_cs_terminate()
{
- assert(brw->gen >= 7);
+ assert(devinfo->gen >= 7);
/* We are getting the thread ID from the compute shader header */
assert(stage == MESA_SHADER_COMPUTE);
*/
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);
- fs_inst *inst = emit(MOV(payload, g0));
- inst->force_writemask_all = true;
+ bld.group(8, 0).exec_all().MOV(payload, g0);
/* Send a message to the thread spawner to terminate the thread. */
- inst = emit(CS_OPCODE_CS_TERMINATE, reg_undef, payload);
+ fs_inst *inst = bld.exec_all()
+ .emit(CS_OPCODE_CS_TERMINATE, reg_undef, payload);
inst->eot = true;
}
-fs_visitor::fs_visitor(struct brw_context *brw,
+void
+fs_visitor::emit_barrier()
+{
+ assert(devinfo->gen >= 7);
+
+ /* We are getting the barrier ID from the compute shader header */
+ assert(stage == MESA_SHADER_COMPUTE);
+
+ fs_reg payload = fs_reg(GRF, alloc.allocate(1), BRW_REGISTER_TYPE_UD);
+
+ /* Clear the message payload */
+ bld.exec_all().MOV(payload, fs_reg(0u));
+
+ /* Copy bits 27:24 of r0.2 (barrier id) to the message payload reg.2 */
+ fs_reg r0_2 = fs_reg(retype(brw_vec1_grf(0, 2), BRW_REGISTER_TYPE_UD));
+ bld.exec_all().AND(component(payload, 2), r0_2, fs_reg(0x0f000000u));
+
+ /* Emit a gateway "barrier" message using the payload we set up, followed
+ * by a wait instruction.
+ */
+ bld.exec_all().emit(SHADER_OPCODE_BARRIER, reg_undef, payload);
+}
+
+fs_visitor::fs_visitor(const struct brw_compiler *compiler, void *log_data,
void *mem_ctx,
gl_shader_stage stage,
const void *key,
struct brw_stage_prog_data *prog_data,
struct gl_shader_program *shader_prog,
struct gl_program *prog,
- unsigned dispatch_width)
- : backend_shader(brw, shader_prog, prog, prog_data, stage),
- reg_null_f(retype(brw_null_vec(dispatch_width), BRW_REGISTER_TYPE_F)),
- reg_null_d(retype(brw_null_vec(dispatch_width), BRW_REGISTER_TYPE_D)),
- reg_null_ud(retype(brw_null_vec(dispatch_width), BRW_REGISTER_TYPE_UD)),
+ unsigned dispatch_width,
+ int shader_time_index)
+ : backend_shader(compiler, log_data, mem_ctx,
+ shader_prog, prog, prog_data, stage),
key(key), prog_data(prog_data),
- dispatch_width(dispatch_width), promoted_constants(0)
+ dispatch_width(dispatch_width),
+ shader_time_index(shader_time_index),
+ promoted_constants(0),
+ bld(fs_builder(this, dispatch_width).at_end())
{
- this->mem_ctx = mem_ctx;
-
switch (stage) {
case MESA_SHADER_FRAGMENT:
key_tex = &((const brw_wm_prog_key *) key)->tex;
this->no16_msg = NULL;
this->nir_locals = NULL;
- this->nir_globals = NULL;
+ this->nir_ssa_values = NULL;
memset(&this->payload, 0, sizeof(this->payload));
memset(this->outputs, 0, sizeof(this->outputs));
this->first_non_payload_grf = 0;
this->max_grf = devinfo->gen >= 7 ? GEN7_MRF_HACK_START : BRW_MAX_GRF;
- this->current_annotation = NULL;
- this->base_ir = NULL;
-
this->virtual_grf_start = NULL;
this->virtual_grf_end = NULL;
this->live_intervals = NULL;
projects / mesa.git / blobdiff