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 class backend_instruction : public exec_node {
  31 public:
  32    enum opcode opcode; /* BRW_OPCODE_* or FS_OPCODE_* */
  33
  34    uint32_t predicate;
  35    bool predicate_inverse;
  36 };
  37
  38 class backend_visitor : public ir_visitor {
  39 public:
  40
  41    struct brw_context *brw;
  42    struct intel_context *intel;
  43    struct gl_context *ctx;
  44    struct brw_shader *shader;
  45    struct gl_shader_program *prog;
  46
  47    /** ralloc context for temporary data used during compile */
  48    void *mem_ctx;
  49
  50    /**
  51     * List of either fs_inst or vec4_instruction (inheriting from
  52     * backend_instruction)
  53     */
  54    exec_list instructions;
  55 };
  56
  57 int brw_type_for_base_type(const struct glsl_type *type);
  58 uint32_t brw_conditional_for_comparison(unsigned int op);
  59 uint32_t brw_math_function(enum opcode op);
  60 uint32_t brw_texture_offset(ir_constant *offset);