src/gallium/drivers/llvmpipe/lp_jit.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
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  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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  25  *
  26  **************************************************************************/
  27
  28 /**
  29  * @file
  30  * C - JIT interfaces
  31  *
  32  * @author Jose Fonseca <jfonseca@vmware.com>
  33  */
  34
  35 #ifndef LP_JIT_H
  36 #define LP_JIT_H
  37
  38
  39 #include "lp_bld_struct.h"
  40
  41 #include "pipe/p_state.h"
  42
  43
  44 struct llvmpipe_screen;
  45
  46
  47 struct lp_jit_texture
  48 {
  49    uint32_t width;
  50    uint32_t height;
  51    uint32_t stride;
  52    const void *data;
  53 };
  54
  55
  56 enum {
  57    LP_JIT_TEXTURE_WIDTH = 0,
  58    LP_JIT_TEXTURE_HEIGHT,
  59    LP_JIT_TEXTURE_STRIDE,
  60    LP_JIT_TEXTURE_DATA
  61 };
  62
  63
  64
  65 /**
  66  * This structure is passed directly to the generated fragment shader.
  67  *
  68  * It contains the derived state.
  69  *
  70  * Changes here must be reflected in the lp_jit_context_* macros and
  71  * lp_jit_init_types function. Changes to the ordering should be avoided.
  72  *
  73  * Only use types with a clear size and padding here, in particular prefer the
  74  * stdint.h types to the basic integer types.
  75  */
  76 struct lp_jit_context
  77 {
  78    const float *constants;
  79
  80    float alpha_ref_value;
  81
  82    /** floats, not ints */
  83    float scissor_xmin, scissor_ymin, scissor_xmax, scissor_ymax;
  84
  85    /* FIXME: store (also?) in floats */
  86    uint8_t *blend_color;
  87
  88    struct lp_jit_texture textures[PIPE_MAX_SAMPLERS];
  89 };
  90
  91
  92 #define lp_jit_context_constants(_builder, _ptr) \
  93    lp_build_struct_get(_builder, _ptr, 0, "constants")
  94
  95 #define lp_jit_context_alpha_ref_value(_builder, _ptr) \
  96    lp_build_struct_get(_builder, _ptr, 1, "alpha_ref_value")
  97
  98 #define lp_jit_context_scissor_xmin_value(_builder, _ptr) \
  99    lp_build_struct_get(_builder, _ptr, 2, "scissor_xmin")
 100
 101 #define lp_jit_context_scissor_ymin_value(_builder, _ptr) \
 102    lp_build_struct_get(_builder, _ptr, 3, "scissor_ymin")
 103
 104 #define lp_jit_context_scissor_xmax_value(_builder, _ptr) \
 105    lp_build_struct_get(_builder, _ptr, 4, "scissor_xmax")
 106
 107 #define lp_jit_context_scissor_ymax_value(_builder, _ptr) \
 108    lp_build_struct_get(_builder, _ptr, 5, "scissor_ymax")
 109
 110 #define lp_jit_context_blend_color(_builder, _ptr) \
 111    lp_build_struct_get(_builder, _ptr, 6, "blend_color")
 112
 113 #define LP_JIT_CONTEXT_TEXTURES_INDEX 7
 114
 115 #define lp_jit_context_textures(_builder, _ptr) \
 116    lp_build_struct_get_ptr(_builder, _ptr, LP_JIT_CONTEXT_TEXTURES_INDEX, "textures")
 117
 118
 119 typedef void
 120 (*lp_jit_frag_func)(const struct lp_jit_context *context,
 121                     uint32_t x,
 122                     uint32_t y,
 123                     const void *a0,
 124                     const void *dadx,
 125                     const void *dady,
 126                     uint8_t **color,
 127                     void *depth,
 128                     const int32_t c1,
 129                     const int32_t c2,
 130                     const int32_t c3,
 131                     const int32_t *step1,
 132                     const int32_t *step2,
 133                     const int32_t *step3);
 134
 135
 136 void
 137 lp_jit_screen_cleanup(struct llvmpipe_screen *screen);
 138
 139
 140 void
 141 lp_jit_screen_init(struct llvmpipe_screen *screen);
 142
 143
 144 #endif /* LP_JIT_H */