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
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  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
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  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 "gallivm/lp_bld_struct.h"
  40
  41 #include "pipe/p_state.h"
  42 #include "lp_texture.h"
  43
  44
  45 struct lp_fragment_shader_variant;
  46 struct llvmpipe_screen;
  47
  48
  49 struct lp_jit_texture
  50 {
  51    uint32_t width;
  52    uint32_t height;
  53    uint32_t depth;
  54    uint32_t first_level;
  55    uint32_t last_level;
  56    const void *base;
  57    uint32_t row_stride[LP_MAX_TEXTURE_LEVELS];
  58    uint32_t img_stride[LP_MAX_TEXTURE_LEVELS];
  59    uint32_t mip_offsets[LP_MAX_TEXTURE_LEVELS];
  60    /* sampler state, actually */
  61    float min_lod;
  62    float max_lod;
  63    float lod_bias;
  64    float border_color[4];
  65 };
  66
  67
  68 enum {
  69    LP_JIT_TEXTURE_WIDTH = 0,
  70    LP_JIT_TEXTURE_HEIGHT,
  71    LP_JIT_TEXTURE_DEPTH,
  72    LP_JIT_TEXTURE_FIRST_LEVEL,
  73    LP_JIT_TEXTURE_LAST_LEVEL,
  74    LP_JIT_TEXTURE_BASE,
  75    LP_JIT_TEXTURE_ROW_STRIDE,
  76    LP_JIT_TEXTURE_IMG_STRIDE,
  77    LP_JIT_TEXTURE_MIP_OFFSETS,
  78    LP_JIT_TEXTURE_MIN_LOD,
  79    LP_JIT_TEXTURE_MAX_LOD,
  80    LP_JIT_TEXTURE_LOD_BIAS,
  81    LP_JIT_TEXTURE_BORDER_COLOR,
  82    LP_JIT_TEXTURE_NUM_FIELDS  /* number of fields above */
  83 };
  84
  85
  86
  87 /**
  88  * This structure is passed directly to the generated fragment shader.
  89  *
  90  * It contains the derived state.
  91  *
  92  * Changes here must be reflected in the lp_jit_context_* macros and
  93  * lp_jit_init_types function. Changes to the ordering should be avoided.
  94  *
  95  * Only use types with a clear size and padding here, in particular prefer the
  96  * stdint.h types to the basic integer types.
  97  */
  98 struct lp_jit_context
  99 {
 100    const float *constants;
 101
 102    float alpha_ref_value;
 103
 104    uint32_t stencil_ref_front, stencil_ref_back;
 105
 106    uint8_t *u8_blend_color;
 107    float *f_blend_color;
 108
 109    struct lp_jit_texture textures[PIPE_MAX_SAMPLERS];
 110 };
 111
 112
 113 /**
 114  * These enum values must match the position of the fields in the
 115  * lp_jit_context struct above.
 116  */
 117 enum {
 118    LP_JIT_CTX_CONSTANTS = 0,
 119    LP_JIT_CTX_ALPHA_REF,
 120    LP_JIT_CTX_STENCIL_REF_FRONT,
 121    LP_JIT_CTX_STENCIL_REF_BACK,
 122    LP_JIT_CTX_U8_BLEND_COLOR,
 123    LP_JIT_CTX_F_BLEND_COLOR,
 124    LP_JIT_CTX_TEXTURES,
 125    LP_JIT_CTX_COUNT
 126 };
 127
 128
 129 #define lp_jit_context_constants(_gallivm, _ptr) \
 130    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_CONSTANTS, "constants")
 131
 132 #define lp_jit_context_alpha_ref_value(_gallivm, _ptr) \
 133    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_ALPHA_REF, "alpha_ref_value")
 134
 135 #define lp_jit_context_stencil_ref_front_value(_gallivm, _ptr) \
 136    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_STENCIL_REF_FRONT, "stencil_ref_front")
 137
 138 #define lp_jit_context_stencil_ref_back_value(_gallivm, _ptr) \
 139    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_STENCIL_REF_BACK, "stencil_ref_back")
 140
 141 #define lp_jit_context_u8_blend_color(_gallivm, _ptr) \
 142    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_U8_BLEND_COLOR, "u8_blend_color")
 143
 144 #define lp_jit_context_f_blend_color(_gallivm, _ptr) \
 145    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_F_BLEND_COLOR, "f_blend_color")
 146
 147 #define lp_jit_context_textures(_gallivm, _ptr) \
 148    lp_build_struct_get_ptr(_gallivm, _ptr, LP_JIT_CTX_TEXTURES, "textures")
 149
 150
 151
 152 /**
 153  * typedef for fragment shader function
 154  *
 155  * @param context       jit context
 156  * @param x             block start x
 157  * @param y             block start y
 158  * @param facing        is front facing
 159  * @param a0            shader input a0
 160  * @param dadx          shader input dadx
 161  * @param dady          shader input dady
 162  * @param color         color buffer
 163  * @param depth         depth buffer
 164  * @param mask          mask of visible pixels in block
 165  * @param thread_data   task thread data
 166  * @param stride        color buffer row stride in bytes
 167  */
 168 typedef void
 169 (*lp_jit_frag_func)(const struct lp_jit_context *context,
 170                     uint32_t x,
 171                     uint32_t y,
 172                     uint32_t facing,
 173                     const void *a0,
 174                     const void *dadx,
 175                     const void *dady,
 176                     uint8_t **color,
 177                     void *depth,
 178                     uint32_t mask,
 179                     uint32_t *counter,
 180                     unsigned *stride);
 181
 182
 183 void
 184 lp_jit_screen_cleanup(struct llvmpipe_screen *screen);
 185
 186
 187 void
 188 lp_jit_screen_init(struct llvmpipe_screen *screen);
 189
 190
 191 void
 192 lp_jit_init_types(struct lp_fragment_shader_variant *lp);
 193
 194
 195 #endif /* LP_JIT_H */