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 "glsl/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    : mem_ctx(ralloc_context(NULL)),
  30      generator(brw, mem_ctx,
  31                rzalloc(mem_ctx, struct brw_wm_prog_key),
  32                rzalloc(mem_ctx, struct brw_wm_prog_data),
  33                NULL, NULL, false)
  34 {
  35 }
  36
  37 brw_blorp_eu_emitter::~brw_blorp_eu_emitter()
  38 {
  39    ralloc_free(mem_ctx);
  40 }
  41
  42 const unsigned *
  43 brw_blorp_eu_emitter::get_program(unsigned *program_size, FILE *dump_file)
  44 {
  45    const unsigned *res;
  46
  47    if (unlikely(INTEL_DEBUG & DEBUG_BLORP)) {
  48       fprintf(stderr, "Native code for BLORP blit:\n");
  49       res = generator.generate_assembly(NULL, &insts, program_size, dump_file);
  50       fprintf(stderr, "\n");
  51    } else {
  52       res = generator.generate_assembly(NULL, &insts, program_size);
  53    }
  54
  55    return res;
  56 }
  57
  58 /**
  59  * Emit code that kills pixels whose X and Y coordinates are outside the
  60  * boundary of the rectangle defined by the push constants (dst_x0, dst_y0,
  61  * dst_x1, dst_y1).
  62  */
  63 void
  64 brw_blorp_eu_emitter::emit_kill_if_outside_rect(const struct brw_reg &x,
  65                                                 const struct brw_reg &y,
  66                                                 const struct brw_reg &dst_x0,
  67                                                 const struct brw_reg &dst_x1,
  68                                                 const struct brw_reg &dst_y0,
  69                                                 const struct brw_reg &dst_y1)
  70 {
  71    struct brw_reg f0 = brw_flag_reg(0, 0);
  72    struct brw_reg g1 = retype(brw_vec1_grf(1, 7), BRW_REGISTER_TYPE_UW);
  73
  74    emit_cmp(BRW_CONDITIONAL_GE, x, dst_x0);
  75    emit_cmp(BRW_CONDITIONAL_GE, y, dst_y0)->predicate = BRW_PREDICATE_NORMAL;
  76    emit_cmp(BRW_CONDITIONAL_L, x, dst_x1)->predicate = BRW_PREDICATE_NORMAL;
  77    emit_cmp(BRW_CONDITIONAL_L, y, dst_y1)->predicate = BRW_PREDICATE_NORMAL;
  78
  79    fs_inst *inst = new (mem_ctx) fs_inst(BRW_OPCODE_AND, g1, f0, g1);
  80    inst->force_writemask_all = true;
  81    insts.push_tail(inst);
  82 }
  83
  84 void
  85 brw_blorp_eu_emitter::emit_texture_lookup(const struct brw_reg &dst,
  86                                           enum opcode op,
  87                                           unsigned base_mrf,
  88                                           unsigned msg_length)
  89 {
  90    fs_inst *inst = new (mem_ctx) fs_inst(op, dst, brw_message_reg(base_mrf));
  91
  92    inst->base_mrf = base_mrf;
  93    inst->mlen = msg_length;
  94    inst->sampler = 0;
  95    inst->header_present = false;
  96
  97    insts.push_tail(inst);
  98 }
  99
 100 void
 101 brw_blorp_eu_emitter::emit_render_target_write(const struct brw_reg &src0,
 102                                                unsigned msg_reg_nr,
 103                                                unsigned msg_length,
 104                                                bool use_header)
 105 {
 106    fs_inst *inst = new (mem_ctx) fs_inst(FS_OPCODE_BLORP_FB_WRITE);
 107
 108    inst->src[0] = src0;
 109    inst->base_mrf = msg_reg_nr;
 110    inst->mlen = msg_length;
 111    inst->header_present = use_header;
 112    inst->target = BRW_BLORP_RENDERBUFFER_BINDING_TABLE_INDEX;
 113
 114    insts.push_tail(inst);
 115 }
 116
 117 void
 118 brw_blorp_eu_emitter::emit_combine(enum opcode combine_opcode,
 119                                    const struct brw_reg &dst,
 120                                    const struct brw_reg &src_1,
 121                                    const struct brw_reg &src_2)
 122 {
 123    assert(combine_opcode == BRW_OPCODE_ADD || combine_opcode == BRW_OPCODE_AVG);
 124
 125    insts.push_tail(new (mem_ctx) fs_inst(combine_opcode, dst, src_1, src_2));
 126 }
 127
 128 fs_inst *
 129 brw_blorp_eu_emitter::emit_cmp(int op,
 130                                const struct brw_reg &x,
 131                                const struct brw_reg &y)
 132 {
 133    fs_inst *cmp = new (mem_ctx) fs_inst(BRW_OPCODE_CMP,
 134                                         vec16(brw_null_reg()), x, y);
 135    cmp->conditional_mod = op;
 136    insts.push_tail(cmp);
 137    return cmp;
 138 }
 139