src/mesa/drivers/dri/i965/brw_blorp_blit_eu.cpp

   1 /*
   2  * Copyright © 2013 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #include "util/ralloc.h"
  25 #include "brw_blorp_blit_eu.h"
  26 #include "brw_blorp.h"
  27 #include "brw_cfg.h"
  28
  29 brw_blorp_eu_emitter::brw_blorp_eu_emitter(struct brw_context *brw,
  30                                            bool debug_flag)
  31    : mem_ctx(ralloc_context(NULL)),
  32      generator(brw, mem_ctx, (void *) rzalloc(mem_ctx, struct brw_wm_prog_key),
  33                (struct brw_stage_prog_data *) rzalloc(mem_ctx, struct brw_wm_prog_data),
  34                NULL, false, "BLORP")
  35 {
  36    if (debug_flag)
  37       generator.enable_debug("blorp");
  38 }
  39
  40 brw_blorp_eu_emitter::~brw_blorp_eu_emitter()
  41 {
  42    ralloc_free(mem_ctx);
  43 }
  44
  45 const unsigned *
  46 brw_blorp_eu_emitter::get_program(unsigned *program_size)
  47 {
  48    cfg_t cfg(&insts);
  49    generator.generate_code(&cfg, 16);
  50
  51    return generator.get_assembly(program_size);
  52 }
  53
  54 /**
  55  * Emit code that kills pixels whose X and Y coordinates are outside the
  56  * boundary of the rectangle defined by the push constants (dst_x0, dst_y0,
  57  * dst_x1, dst_y1).
  58  */
  59 void
  60 brw_blorp_eu_emitter::emit_kill_if_outside_rect(const struct brw_reg &x,
  61                                                 const struct brw_reg &y,
  62                                                 const struct brw_reg &dst_x0,
  63                                                 const struct brw_reg &dst_x1,
  64                                                 const struct brw_reg &dst_y0,
  65                                                 const struct brw_reg &dst_y1)
  66 {
  67    struct brw_reg f0 = brw_flag_reg(0, 0);
  68    struct brw_reg g1 = retype(brw_vec1_grf(1, 7), BRW_REGISTER_TYPE_UW);
  69
  70    emit_cmp(BRW_CONDITIONAL_GE, x, dst_x0);
  71    emit_cmp(BRW_CONDITIONAL_GE, y, dst_y0)->predicate = BRW_PREDICATE_NORMAL;
  72    emit_cmp(BRW_CONDITIONAL_L, x, dst_x1)->predicate = BRW_PREDICATE_NORMAL;
  73    emit_cmp(BRW_CONDITIONAL_L, y, dst_y1)->predicate = BRW_PREDICATE_NORMAL;
  74
  75    fs_inst *inst = new (mem_ctx) fs_inst(BRW_OPCODE_AND, g1, f0, g1);
  76    inst->force_writemask_all = true;
  77    insts.push_tail(inst);
  78 }
  79
  80 void
  81 brw_blorp_eu_emitter::emit_texture_lookup(const struct brw_reg &dst,
  82                                           enum opcode op,
  83                                           unsigned base_mrf,
  84                                           unsigned msg_length)
  85 {
  86    fs_inst *inst = new (mem_ctx) fs_inst(op, dst, brw_message_reg(base_mrf),
  87                                          fs_reg(0u));
  88
  89    inst->base_mrf = base_mrf;
  90    inst->mlen = msg_length;
  91    inst->header_present = false;
  92
  93    insts.push_tail(inst);
  94 }
  95
  96 void
  97 brw_blorp_eu_emitter::emit_render_target_write(const struct brw_reg &src0,
  98                                                unsigned msg_reg_nr,
  99                                                unsigned msg_length,
 100                                                bool use_header)
 101 {
 102    fs_inst *inst = new (mem_ctx) fs_inst(FS_OPCODE_BLORP_FB_WRITE, 16);
 103
 104    inst->src[0] = src0;
 105    inst->base_mrf = msg_reg_nr;
 106    inst->mlen = msg_length;
 107    inst->header_present = use_header;
 108    inst->target = BRW_BLORP_RENDERBUFFER_BINDING_TABLE_INDEX;
 109
 110    insts.push_tail(inst);
 111 }
 112
 113 void
 114 brw_blorp_eu_emitter::emit_combine(enum opcode combine_opcode,
 115                                    const struct brw_reg &dst,
 116                                    const struct brw_reg &src_1,
 117                                    const struct brw_reg &src_2)
 118 {
 119    assert(combine_opcode == BRW_OPCODE_ADD || combine_opcode == BRW_OPCODE_AVG);
 120
 121    insts.push_tail(new (mem_ctx) fs_inst(combine_opcode, dst, src_1, src_2));
 122 }
 123
 124 fs_inst *
 125 brw_blorp_eu_emitter::emit_cmp(enum brw_conditional_mod op,
 126                                const struct brw_reg &x,
 127                                const struct brw_reg &y)
 128 {
 129    fs_inst *cmp = new (mem_ctx) fs_inst(BRW_OPCODE_CMP,
 130                                         vec16(brw_null_reg()), x, y);
 131    cmp->conditional_mod = op;
 132    insts.push_tail(cmp);
 133    return cmp;
 134 }
 135