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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   9  * without limitation the rights to use, copy, modify, merge, publish,
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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
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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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 "gallivm/lp_bld_struct.h"
  40
  41 #include "pipe/p_state.h"
  42 #include "lp_texture.h"
  43
  44
  45 struct llvmpipe_screen;
  46
  47
  48 struct lp_jit_texture
  49 {
  50    uint32_t width;
  51    uint32_t height;
  52    uint32_t depth;
  53    uint32_t last_level;
  54    uint32_t row_stride[LP_MAX_TEXTURE_LEVELS];
  55    uint32_t img_stride[LP_MAX_TEXTURE_LEVELS];
  56    const void *data[LP_MAX_TEXTURE_LEVELS];
  57    /* sampler state, actually */
  58    float min_lod;
  59    float max_lod;
  60    float lod_bias;
  61    float border_color[4];
  62 };
  63
  64
  65 enum {
  66    LP_JIT_TEXTURE_WIDTH = 0,
  67    LP_JIT_TEXTURE_HEIGHT,
  68    LP_JIT_TEXTURE_DEPTH,
  69    LP_JIT_TEXTURE_LAST_LEVEL,
  70    LP_JIT_TEXTURE_ROW_STRIDE,
  71    LP_JIT_TEXTURE_IMG_STRIDE,
  72    LP_JIT_TEXTURE_DATA,
  73    LP_JIT_TEXTURE_MIN_LOD,
  74    LP_JIT_TEXTURE_MAX_LOD,
  75    LP_JIT_TEXTURE_LOD_BIAS,
  76    LP_JIT_TEXTURE_BORDER_COLOR,
  77    LP_JIT_TEXTURE_NUM_FIELDS  /* number of fields above */
  78 };
  79
  80
  81
  82 /**
  83  * This structure is passed directly to the generated fragment shader.
  84  *
  85  * It contains the derived state.
  86  *
  87  * Changes here must be reflected in the lp_jit_context_* macros and
  88  * lp_jit_init_types function. Changes to the ordering should be avoided.
  89  *
  90  * Only use types with a clear size and padding here, in particular prefer the
  91  * stdint.h types to the basic integer types.
  92  */
  93 struct lp_jit_context
  94 {
  95    const float *constants;
  96
  97    float alpha_ref_value;
  98
  99    uint32_t stencil_ref_front, stencil_ref_back;
 100
 101    /* FIXME: store (also?) in floats */
 102    uint8_t *blend_color;
 103
 104    struct lp_jit_texture textures[PIPE_MAX_SAMPLERS];
 105 };
 106
 107
 108 /**
 109  * These enum values must match the position of the fields in the
 110  * lp_jit_context struct above.
 111  */
 112 enum {
 113    LP_JIT_CTX_CONSTANTS = 0,
 114    LP_JIT_CTX_ALPHA_REF,
 115    LP_JIT_CTX_STENCIL_REF_FRONT,
 116    LP_JIT_CTX_STENCIL_REF_BACK,
 117    LP_JIT_CTX_BLEND_COLOR,
 118    LP_JIT_CTX_TEXTURES,
 119    LP_JIT_CTX_COUNT
 120 };
 121
 122
 123 #define lp_jit_context_constants(_builder, _ptr) \
 124    lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_CONSTANTS, "constants")
 125
 126 #define lp_jit_context_alpha_ref_value(_builder, _ptr) \
 127    lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_ALPHA_REF, "alpha_ref_value")
 128
 129 #define lp_jit_context_stencil_ref_front_value(_builder, _ptr) \
 130    lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_STENCIL_REF_FRONT, "stencil_ref_front")
 131
 132 #define lp_jit_context_stencil_ref_back_value(_builder, _ptr) \
 133    lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_STENCIL_REF_BACK, "stencil_ref_back")
 134
 135 #define lp_jit_context_blend_color(_builder, _ptr) \
 136    lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_BLEND_COLOR, "blend_color")
 137
 138 #define lp_jit_context_textures(_builder, _ptr) \
 139    lp_build_struct_get_ptr(_builder, _ptr, LP_JIT_CTX_TEXTURES, "textures")
 140
 141
 142
 143 typedef void
 144 (*lp_jit_frag_func)(const struct lp_jit_context *context,
 145                     uint32_t x,
 146                     uint32_t y,
 147                     float facing,
 148                     const void *a0,
 149                     const void *dadx,
 150                     const void *dady,
 151                     uint8_t **color,
 152                     void *depth,
 153                     uint32_t mask,
 154                     uint32_t *counter);
 155
 156
 157 void
 158 lp_jit_screen_cleanup(struct llvmpipe_screen *screen);
 159
 160
 161 void
 162 lp_jit_screen_init(struct llvmpipe_screen *screen);
 163
 164
 165 #endif /* LP_JIT_H */