src/gallium/drivers/llvmpipe/lp_jit.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 VMware, Inc.
   4  * All Rights Reserved.
   5  *
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   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  *
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  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  *
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  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 };
  58
  59
  60 enum {
  61    LP_JIT_TEXTURE_WIDTH = 0,
  62    LP_JIT_TEXTURE_HEIGHT,
  63    LP_JIT_TEXTURE_DEPTH,
  64    LP_JIT_TEXTURE_LAST_LEVEL,
  65    LP_JIT_TEXTURE_ROW_STRIDE,
  66    LP_JIT_TEXTURE_IMG_STRIDE,
  67    LP_JIT_TEXTURE_DATA,
  68    LP_JIT_TEXTURE_NUM_FIELDS  /* number of fields above */
  69 };
  70
  71
  72
  73 /**
  74  * This structure is passed directly to the generated fragment shader.
  75  *
  76  * It contains the derived state.
  77  *
  78  * Changes here must be reflected in the lp_jit_context_* macros and
  79  * lp_jit_init_types function. Changes to the ordering should be avoided.
  80  *
  81  * Only use types with a clear size and padding here, in particular prefer the
  82  * stdint.h types to the basic integer types.
  83  */
  84 struct lp_jit_context
  85 {
  86    const float *constants;
  87
  88    float alpha_ref_value;
  89
  90    uint32_t stencil_ref_front, stencil_ref_back;
  91
  92    /** floats, not ints */
  93    float scissor_xmin, scissor_ymin, scissor_xmax, scissor_ymax;
  94
  95    /* FIXME: store (also?) in floats */
  96    uint8_t *blend_color;
  97
  98    struct lp_jit_texture textures[PIPE_MAX_SAMPLERS];
  99 };
 100
 101
 102 /**
 103  * These enum values must match the position of the fields in the
 104  * lp_jit_context struct above.
 105  */
 106 enum {
 107    LP_JIT_CTX_CONSTANTS = 0,
 108    LP_JIT_CTX_ALPHA_REF,
 109    LP_JIT_CTX_STENCIL_REF_FRONT,
 110    LP_JIT_CTX_STENCIL_REF_BACK,
 111    LP_JIT_CTX_SCISSOR_XMIN,
 112    LP_JIT_CTX_SCISSOR_YMIN,
 113    LP_JIT_CTX_SCISSOR_XMAX,
 114    LP_JIT_CTX_SCISSOR_YMAX,
 115    LP_JIT_CTX_BLEND_COLOR,
 116    LP_JIT_CTX_TEXTURES,
 117    LP_JIT_CTX_COUNT
 118 };
 119
 120
 121 #define lp_jit_context_constants(_builder, _ptr) \
 122    lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_CONSTANTS, "constants")
 123
 124 #define lp_jit_context_alpha_ref_value(_builder, _ptr) \
 125    lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_ALPHA_REF, "alpha_ref_value")
 126
 127 #define lp_jit_context_stencil_ref_front_value(_builder, _ptr) \
 128    lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_STENCIL_REF_FRONT, "stencil_ref_front")
 129
 130 #define lp_jit_context_stencil_ref_back_value(_builder, _ptr) \
 131    lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_STENCIL_REF_BACK, "stencil_ref_back")
 132
 133 #define lp_jit_context_scissor_xmin_value(_builder, _ptr) \
 134    lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_SCISSOR_XMIN, "scissor_xmin")
 135
 136 #define lp_jit_context_scissor_ymin_value(_builder, _ptr) \
 137    lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_SCISSOR_YMIN, "scissor_ymin")
 138
 139 #define lp_jit_context_scissor_xmax_value(_builder, _ptr) \
 140    lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_SCISSOR_XMAX, "scissor_xmax")
 141
 142 #define lp_jit_context_scissor_ymax_value(_builder, _ptr) \
 143    lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_SCISSOR_YMAX, "scissor_ymax")
 144
 145 #define lp_jit_context_blend_color(_builder, _ptr) \
 146    lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_BLEND_COLOR, "blend_color")
 147
 148 #define lp_jit_context_textures(_builder, _ptr) \
 149    lp_build_struct_get_ptr(_builder, _ptr, LP_JIT_CONTEXT_TEXTURES, "textures")
 150
 151
 152 /** Indexes into jit_function[] array */
 153 #define RAST_WHOLE 0
 154 #define RAST_EDGE_TEST 1
 155
 156
 157 typedef void
 158 (*lp_jit_frag_func)(const struct lp_jit_context *context,
 159                     uint32_t x,
 160                     uint32_t y,
 161                     float facing,
 162                     const void *a0,
 163                     const void *dadx,
 164                     const void *dady,
 165                     uint8_t **color,
 166                     void *depth,
 167                     const int32_t c1,
 168                     const int32_t c2,
 169                     const int32_t c3,
 170                     const int32_t *step1,
 171                     const int32_t *step2,
 172                     const int32_t *step3);
 173
 174
 175 void
 176 lp_jit_screen_cleanup(struct llvmpipe_screen *screen);
 177
 178
 179 void
 180 lp_jit_screen_init(struct llvmpipe_screen *screen);
 181
 182
 183 #endif /* LP_JIT_H */