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
   8  * "Software"), to deal in the Software without restriction, including
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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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  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  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    /* FIXME: store (also?) in floats */
  83    uint8_t *blend_color;
  84
  85    struct lp_jit_texture textures[PIPE_MAX_SAMPLERS];
  86 };
  87
  88
  89 #define lp_jit_context_constants(_builder, _ptr) \
  90    lp_build_struct_get(_builder, _ptr, 0, "constants")
  91
  92 #define lp_jit_context_alpha_ref_value(_builder, _ptr) \
  93    lp_build_struct_get(_builder, _ptr, 1, "alpha_ref_value")
  94
  95 #define lp_jit_context_blend_color(_builder, _ptr) \
  96    lp_build_struct_get(_builder, _ptr, 2, "blend_color")
  97
  98 #define LP_JIT_CONTEXT_TEXTURES_INDEX 3
  99
 100 #define lp_jit_context_textures(_builder, _ptr) \
 101    lp_build_struct_get_ptr(_builder, _ptr, LP_JIT_CONTEXT_TEXTURES_INDEX, "textures")
 102
 103
 104 typedef void
 105 (*lp_jit_frag_func)(struct lp_jit_context *context,
 106                     uint32_t x,
 107                     uint32_t y,
 108                     const void *a0,
 109                     const void *dadx,
 110                     const void *dady,
 111                     uint32_t *mask,
 112                     void *color,
 113                     void *depth);
 114
 115 void
 116 lp_jit_screen_cleanup(struct llvmpipe_screen *screen);
 117
 118
 119 void
 120 lp_jit_screen_init(struct llvmpipe_screen *screen);
 121
 122
 123 #endif /* LP_JIT_H */