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
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  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 #include "gallivm/lp_bld_limits.h"
  41
  42 #include "pipe/p_state.h"
  43 #include "lp_texture.h"
  44
  45
  46 struct lp_fragment_shader_variant;
  47 struct llvmpipe_screen;
  48
  49
  50 struct lp_jit_texture
  51 {
  52    uint32_t width;        /* same as number of elements */
  53    uint32_t height;
  54    uint32_t depth;        /* doubles as array size */
  55    uint32_t first_level;
  56    uint32_t last_level;
  57    const void *base;
  58    uint32_t row_stride[LP_MAX_TEXTURE_LEVELS];
  59    uint32_t img_stride[LP_MAX_TEXTURE_LEVELS];
  60    uint32_t mip_offsets[LP_MAX_TEXTURE_LEVELS];
  61 };
  62
  63
  64 struct lp_jit_sampler
  65 {
  66    float min_lod;
  67    float max_lod;
  68    float lod_bias;
  69    float border_color[4];
  70 };
  71
  72
  73 enum {
  74    LP_JIT_TEXTURE_WIDTH = 0,
  75    LP_JIT_TEXTURE_HEIGHT,
  76    LP_JIT_TEXTURE_DEPTH,
  77    LP_JIT_TEXTURE_FIRST_LEVEL,
  78    LP_JIT_TEXTURE_LAST_LEVEL,
  79    LP_JIT_TEXTURE_BASE,
  80    LP_JIT_TEXTURE_ROW_STRIDE,
  81    LP_JIT_TEXTURE_IMG_STRIDE,
  82    LP_JIT_TEXTURE_MIP_OFFSETS,
  83    LP_JIT_TEXTURE_NUM_FIELDS  /* number of fields above */
  84 };
  85
  86
  87 enum {
  88    LP_JIT_SAMPLER_MIN_LOD,
  89    LP_JIT_SAMPLER_MAX_LOD,
  90    LP_JIT_SAMPLER_LOD_BIAS,
  91    LP_JIT_SAMPLER_BORDER_COLOR,
  92    LP_JIT_SAMPLER_NUM_FIELDS  /* number of fields above */
  93 };
  94
  95
  96 /**
  97  * This structure is passed directly to the generated fragment shader.
  98  *
  99  * It contains the derived state.
 100  *
 101  * Changes here must be reflected in the lp_jit_context_* macros and
 102  * lp_jit_init_types function. Changes to the ordering should be avoided.
 103  *
 104  * Only use types with a clear size and padding here, in particular prefer the
 105  * stdint.h types to the basic integer types.
 106  */
 107 struct lp_jit_context
 108 {
 109    const float *constants[LP_MAX_TGSI_CONST_BUFFERS];
 110
 111    float alpha_ref_value;
 112
 113    uint32_t stencil_ref_front, stencil_ref_back;
 114
 115    uint8_t *u8_blend_color;
 116    float *f_blend_color;
 117
 118    struct lp_jit_texture textures[PIPE_MAX_SHADER_SAMPLER_VIEWS];
 119    struct lp_jit_sampler samplers[PIPE_MAX_SAMPLERS];
 120 };
 121
 122
 123 /**
 124  * These enum values must match the position of the fields in the
 125  * lp_jit_context struct above.
 126  */
 127 enum {
 128    LP_JIT_CTX_CONSTANTS = 0,
 129    LP_JIT_CTX_ALPHA_REF,
 130    LP_JIT_CTX_STENCIL_REF_FRONT,
 131    LP_JIT_CTX_STENCIL_REF_BACK,
 132    LP_JIT_CTX_U8_BLEND_COLOR,
 133    LP_JIT_CTX_F_BLEND_COLOR,
 134    LP_JIT_CTX_TEXTURES,
 135    LP_JIT_CTX_SAMPLERS,
 136    LP_JIT_CTX_COUNT
 137 };
 138
 139
 140 #define lp_jit_context_constants(_gallivm, _ptr) \
 141    lp_build_struct_get_ptr(_gallivm, _ptr, LP_JIT_CTX_CONSTANTS, "constants")
 142
 143 #define lp_jit_context_alpha_ref_value(_gallivm, _ptr) \
 144    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_ALPHA_REF, "alpha_ref_value")
 145
 146 #define lp_jit_context_stencil_ref_front_value(_gallivm, _ptr) \
 147    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_STENCIL_REF_FRONT, "stencil_ref_front")
 148
 149 #define lp_jit_context_stencil_ref_back_value(_gallivm, _ptr) \
 150    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_STENCIL_REF_BACK, "stencil_ref_back")
 151
 152 #define lp_jit_context_u8_blend_color(_gallivm, _ptr) \
 153    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_U8_BLEND_COLOR, "u8_blend_color")
 154
 155 #define lp_jit_context_f_blend_color(_gallivm, _ptr) \
 156    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_F_BLEND_COLOR, "f_blend_color")
 157
 158 #define lp_jit_context_textures(_gallivm, _ptr) \
 159    lp_build_struct_get_ptr(_gallivm, _ptr, LP_JIT_CTX_TEXTURES, "textures")
 160
 161 #define lp_jit_context_samplers(_gallivm, _ptr) \
 162    lp_build_struct_get_ptr(_gallivm, _ptr, LP_JIT_CTX_SAMPLERS, "samplers")
 163
 164
 165 struct lp_jit_thread_data
 166 {
 167    uint64_t vis_counter;
 168 };
 169
 170
 171 enum {
 172    LP_JIT_THREAD_DATA_COUNTER = 0,
 173    LP_JIT_THREAD_DATA_COUNT
 174 };
 175
 176
 177 #define lp_jit_thread_data_counter(_gallivm, _ptr) \
 178    lp_build_struct_get_ptr(_gallivm, _ptr, LP_JIT_THREAD_DATA_COUNTER, "counter")
 179
 180
 181 /**
 182  * typedef for fragment shader function
 183  *
 184  * @param context       jit context
 185  * @param x             block start x
 186  * @param y             block start y
 187  * @param facing        is front facing
 188  * @param a0            shader input a0
 189  * @param dadx          shader input dadx
 190  * @param dady          shader input dady
 191  * @param color         color buffer
 192  * @param depth         depth buffer
 193  * @param mask          mask of visible pixels in block
 194  * @param thread_data   task thread data
 195  * @param stride        color buffer row stride in bytes
 196  * @param depth_stride  depth buffer row stride in bytes
 197  */
 198 typedef void
 199 (*lp_jit_frag_func)(const struct lp_jit_context *context,
 200                     uint32_t x,
 201                     uint32_t y,
 202                     uint32_t facing,
 203                     const void *a0,
 204                     const void *dadx,
 205                     const void *dady,
 206                     uint8_t **color,
 207                     uint8_t *depth,
 208                     uint32_t mask,
 209                     struct lp_jit_thread_data *thread_data,
 210                     unsigned *stride,
 211                     unsigned depth_stride);
 212
 213
 214 void
 215 lp_jit_screen_cleanup(struct llvmpipe_screen *screen);
 216
 217
 218 void
 219 lp_jit_screen_init(struct llvmpipe_screen *screen);
 220
 221
 222 void
 223 lp_jit_init_types(struct lp_fragment_shader_variant *lp);
 224
 225
 226 #endif /* LP_JIT_H */