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
  28 brw_blorp_eu_emitter::brw_blorp_eu_emitter(struct brw_context *brw,
  29                                            bool debug_flag)
  30    : mem_ctx(ralloc_context(NULL)),
  31      generator(brw, mem_ctx,
  32                rzalloc(mem_ctx, struct brw_wm_prog_key),
  33                rzalloc(mem_ctx, struct brw_wm_prog_data),
  34                NULL, NULL, false, false, debug_flag)
  35 {
  36 }
  37
  38 brw_blorp_eu_emitter::~brw_blorp_eu_emitter()
  39 {
  40    ralloc_free(mem_ctx);
  41 }
  42
  43 const unsigned *
  44 brw_blorp_eu_emitter::get_program(unsigned *program_size)
  45 {
  46    return generator.generate_assembly(NULL, &insts, program_size);
  47 }
  48
  49 /**
  50  * Emit code that kills pixels whose X and Y coordinates are outside the
  51  * boundary of the rectangle defined by the push constants (dst_x0, dst_y0,
  52  * dst_x1, dst_y1).
  53  */
  54 void
  55 brw_blorp_eu_emitter::emit_kill_if_outside_rect(const struct brw_reg &x,
  56                                                 const struct brw_reg &y,
  57                                                 const struct brw_reg &dst_x0,
  58                                                 const struct brw_reg &dst_x1,
  59                                                 const struct brw_reg &dst_y0,
  60                                                 const struct brw_reg &dst_y1)
  61 {
  62    struct brw_reg f0 = brw_flag_reg(0, 0);
  63    struct brw_reg g1 = retype(brw_vec1_grf(1, 7), BRW_REGISTER_TYPE_UW);
  64
  65    emit_cmp(BRW_CONDITIONAL_GE, x, dst_x0);
  66    emit_cmp(BRW_CONDITIONAL_GE, y, dst_y0)->predicate = BRW_PREDICATE_NORMAL;
  67    emit_cmp(BRW_CONDITIONAL_L, x, dst_x1)->predicate = BRW_PREDICATE_NORMAL;
  68    emit_cmp(BRW_CONDITIONAL_L, y, dst_y1)->predicate = BRW_PREDICATE_NORMAL;
  69
  70    fs_inst *inst = new (mem_ctx) fs_inst(BRW_OPCODE_AND, g1, f0, g1);
  71    inst->force_writemask_all = true;
  72    insts.push_tail(inst);
  73 }
  74
  75 void
  76 brw_blorp_eu_emitter::emit_texture_lookup(const struct brw_reg &dst,
  77                                           enum opcode op,
  78                                           unsigned base_mrf,
  79                                           unsigned msg_length)
  80 {
  81    fs_inst *inst = new (mem_ctx) fs_inst(op, dst, brw_message_reg(base_mrf));
  82
  83    inst->base_mrf = base_mrf;
  84    inst->mlen = msg_length;
  85    inst->sampler = 0;
  86    inst->header_present = false;
  87
  88    insts.push_tail(inst);
  89 }
  90
  91 void
  92 brw_blorp_eu_emitter::emit_render_target_write(const struct brw_reg &src0,
  93                                                unsigned msg_reg_nr,
  94                                                unsigned msg_length,
  95                                                bool use_header)
  96 {
  97    fs_inst *inst = new (mem_ctx) fs_inst(FS_OPCODE_BLORP_FB_WRITE);
  98
  99    inst->src[0] = src0;
 100    inst->base_mrf = msg_reg_nr;
 101    inst->mlen = msg_length;
 102    inst->header_present = use_header;
 103    inst->target = BRW_BLORP_RENDERBUFFER_BINDING_TABLE_INDEX;
 104
 105    insts.push_tail(inst);
 106 }
 107
 108 void
 109 brw_blorp_eu_emitter::emit_combine(enum opcode combine_opcode,
 110                                    const struct brw_reg &dst,
 111                                    const struct brw_reg &src_1,
 112                                    const struct brw_reg &src_2)
 113 {
 114    assert(combine_opcode == BRW_OPCODE_ADD || combine_opcode == BRW_OPCODE_AVG);
 115
 116    insts.push_tail(new (mem_ctx) fs_inst(combine_opcode, dst, src_1, src_2));
 117 }
 118
 119 fs_inst *
 120 brw_blorp_eu_emitter::emit_cmp(enum brw_conditional_mod op,
 121                                const struct brw_reg &x,
 122                                const struct brw_reg &y)
 123 {
 124    fs_inst *cmp = new (mem_ctx) fs_inst(BRW_OPCODE_CMP,
 125                                         vec16(brw_null_reg()), x, y);
 126    cmp->conditional_mod = op;
 127    insts.push_tail(cmp);
 128    return cmp;
 129 }
 130