/*
* Copyright © 2013 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "util/ralloc.h"
#include "brw_blorp_blit_eu.h"
#include "brw_blorp.h"
#include "brw_cfg.h"
brw_blorp_eu_emitter::brw_blorp_eu_emitter(struct brw_context *brw,
bool debug_flag)
: mem_ctx(ralloc_context(NULL)),
generator(brw, mem_ctx, (void *) rzalloc(mem_ctx, struct brw_wm_prog_key),
(struct brw_stage_prog_data *) rzalloc(mem_ctx, struct brw_wm_prog_data),
NULL, 0, false, "BLORP")
{
if (debug_flag)
generator.enable_debug("blorp");
}
brw_blorp_eu_emitter::~brw_blorp_eu_emitter()
{
ralloc_free(mem_ctx);
}
const unsigned *
brw_blorp_eu_emitter::get_program(unsigned *program_size)
{
cfg_t cfg(&insts);
generator.generate_code(&cfg, 16);
return generator.get_assembly(program_size);
}
/**
* Emit code that kills pixels whose X and Y coordinates are outside the
* boundary of the rectangle defined by the push constants (dst_x0, dst_y0,
* dst_x1, dst_y1).
*/
void
brw_blorp_eu_emitter::emit_kill_if_outside_rect(const struct brw_reg &x,
const struct brw_reg &y,
const struct brw_reg &dst_x0,
const struct brw_reg &dst_x1,
const struct brw_reg &dst_y0,
const struct brw_reg &dst_y1)
{
struct brw_reg f0 = brw_flag_reg(0, 0);
struct brw_reg g1 = retype(brw_vec1_grf(1, 7), BRW_REGISTER_TYPE_UW);
emit_cmp(BRW_CONDITIONAL_GE, x, dst_x0);
emit_cmp(BRW_CONDITIONAL_GE, y, dst_y0)->predicate = BRW_PREDICATE_NORMAL;
emit_cmp(BRW_CONDITIONAL_L, x, dst_x1)->predicate = BRW_PREDICATE_NORMAL;
emit_cmp(BRW_CONDITIONAL_L, y, dst_y1)->predicate = BRW_PREDICATE_NORMAL;
fs_inst *inst = new (mem_ctx) fs_inst(BRW_OPCODE_AND, g1, f0, g1);
inst->force_writemask_all = true;
insts.push_tail(inst);
}
void
brw_blorp_eu_emitter::emit_texture_lookup(const struct brw_reg &dst,
enum opcode op,
unsigned base_mrf,
unsigned msg_length)
{
fs_inst *inst = new (mem_ctx) fs_inst(op, dst, brw_message_reg(base_mrf),
fs_reg(0u));
inst->base_mrf = base_mrf;
inst->mlen = msg_length;
inst->header_size = 0;
insts.push_tail(inst);
}
void
brw_blorp_eu_emitter::emit_render_target_write(const struct brw_reg &src0,
unsigned msg_reg_nr,
unsigned msg_length,
bool use_header)
{
fs_inst *inst = new (mem_ctx) fs_inst(FS_OPCODE_BLORP_FB_WRITE, 16);
inst->src[0] = src0;
inst->base_mrf = msg_reg_nr;
inst->mlen = msg_length;
inst->header_size = use_header ? 2 : 0;
inst->target = BRW_BLORP_RENDERBUFFER_BINDING_TABLE_INDEX;
insts.push_tail(inst);
}
void
brw_blorp_eu_emitter::emit_combine(enum opcode combine_opcode,
const struct brw_reg &dst,
const struct brw_reg &src_1,
const struct brw_reg &src_2)
{
assert(combine_opcode == BRW_OPCODE_ADD || combine_opcode == BRW_OPCODE_AVG);
insts.push_tail(new (mem_ctx) fs_inst(combine_opcode, dst, src_1, src_2));
}
fs_inst *
brw_blorp_eu_emitter::emit_cmp(enum brw_conditional_mod op,
const struct brw_reg &x,
const struct brw_reg &y)
{
fs_inst *cmp = new (mem_ctx) fs_inst(BRW_OPCODE_CMP,
vec16(brw_null_reg()), x, y);
cmp->conditional_mod = op;
insts.push_tail(cmp);
return cmp;
}