src/mesa/drivers/dri/i965/brw_shader.h

   1 /*
   2  * Copyright © 2010 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 <stdint.h>
  25 #include "brw_defines.h"
  26 #include "glsl/ir.h"
  27
  28 #pragma once
  29
  30 enum register_file {
  31    BAD_FILE,
  32    ARF,
  33    GRF,
  34    MRF,
  35    IMM,
  36    HW_REG, /* a struct brw_reg */
  37    ATTR,
  38    UNIFORM, /* prog_data->params[reg] */
  39 };
  40
  41 class backend_instruction : public exec_node {
  42 public:
  43    bool is_tex();
  44    bool is_math();
  45    bool is_control_flow();
  46
  47    enum opcode opcode; /* BRW_OPCODE_* or FS_OPCODE_* */
  48
  49    uint32_t predicate;
  50    bool predicate_inverse;
  51 };
  52
  53 class backend_visitor : public ir_visitor {
  54 public:
  55
  56    struct brw_context *brw;
  57    struct intel_context *intel;
  58    struct gl_context *ctx;
  59    struct brw_shader *shader;
  60    struct gl_shader_program *shader_prog;
  61
  62    /** ralloc context for temporary data used during compile */
  63    void *mem_ctx;
  64
  65    /**
  66     * List of either fs_inst or vec4_instruction (inheriting from
  67     * backend_instruction)
  68     */
  69    exec_list instructions;
  70
  71    virtual void dump_instruction(backend_instruction *inst) = 0;
  72    void dump_instructions();
  73 };
  74
  75 int brw_type_for_base_type(const struct glsl_type *type);
  76 uint32_t brw_conditional_for_comparison(unsigned int op);
  77 uint32_t brw_math_function(enum opcode op);
  78 uint32_t brw_texture_offset(ir_constant *offset);
  79 const char *brw_instruction_name(enum opcode op);