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 #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;
  53    uint32_t height;
  54    uint32_t depth;
  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    /* sampler state, actually */
  62    float min_lod;
  63    float max_lod;
  64    float lod_bias;
  65    float border_color[4];
  66 };
  67
  68
  69 enum {
  70    LP_JIT_TEXTURE_WIDTH = 0,
  71    LP_JIT_TEXTURE_HEIGHT,
  72    LP_JIT_TEXTURE_DEPTH,
  73    LP_JIT_TEXTURE_FIRST_LEVEL,
  74    LP_JIT_TEXTURE_LAST_LEVEL,
  75    LP_JIT_TEXTURE_BASE,
  76    LP_JIT_TEXTURE_ROW_STRIDE,
  77    LP_JIT_TEXTURE_IMG_STRIDE,
  78    LP_JIT_TEXTURE_MIP_OFFSETS,
  79    LP_JIT_TEXTURE_MIN_LOD,
  80    LP_JIT_TEXTURE_MAX_LOD,
  81    LP_JIT_TEXTURE_LOD_BIAS,
  82    LP_JIT_TEXTURE_BORDER_COLOR,
  83    LP_JIT_TEXTURE_NUM_FIELDS  /* number of fields above */
  84 };
  85
  86
  87
  88 /**
  89  * This structure is passed directly to the generated fragment shader.
  90  *
  91  * It contains the derived state.
  92  *
  93  * Changes here must be reflected in the lp_jit_context_* macros and
  94  * lp_jit_init_types function. Changes to the ordering should be avoided.
  95  *
  96  * Only use types with a clear size and padding here, in particular prefer the
  97  * stdint.h types to the basic integer types.
  98  */
  99 struct lp_jit_context
 100 {
 101    const float *constants[LP_MAX_TGSI_CONST_BUFFERS];
 102
 103    float alpha_ref_value;
 104
 105    uint32_t stencil_ref_front, stencil_ref_back;
 106
 107    uint8_t *u8_blend_color;
 108    float *f_blend_color;
 109
 110    struct lp_jit_texture textures[PIPE_MAX_SAMPLERS];
 111 };
 112
 113
 114 /**
 115  * These enum values must match the position of the fields in the
 116  * lp_jit_context struct above.
 117  */
 118 enum {
 119    LP_JIT_CTX_CONSTANTS = 0,
 120    LP_JIT_CTX_ALPHA_REF,
 121    LP_JIT_CTX_STENCIL_REF_FRONT,
 122    LP_JIT_CTX_STENCIL_REF_BACK,
 123    LP_JIT_CTX_U8_BLEND_COLOR,
 124    LP_JIT_CTX_F_BLEND_COLOR,
 125    LP_JIT_CTX_TEXTURES,
 126    LP_JIT_CTX_COUNT
 127 };
 128
 129
 130 #define lp_jit_context_constants(_gallivm, _ptr) \
 131    lp_build_struct_get_ptr(_gallivm, _ptr, LP_JIT_CTX_CONSTANTS, "constants")
 132
 133 #define lp_jit_context_alpha_ref_value(_gallivm, _ptr) \
 134    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_ALPHA_REF, "alpha_ref_value")
 135
 136 #define lp_jit_context_stencil_ref_front_value(_gallivm, _ptr) \
 137    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_STENCIL_REF_FRONT, "stencil_ref_front")
 138
 139 #define lp_jit_context_stencil_ref_back_value(_gallivm, _ptr) \
 140    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_STENCIL_REF_BACK, "stencil_ref_back")
 141
 142 #define lp_jit_context_u8_blend_color(_gallivm, _ptr) \
 143    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_U8_BLEND_COLOR, "u8_blend_color")
 144
 145 #define lp_jit_context_f_blend_color(_gallivm, _ptr) \
 146    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_F_BLEND_COLOR, "f_blend_color")
 147
 148 #define lp_jit_context_textures(_gallivm, _ptr) \
 149    lp_build_struct_get_ptr(_gallivm, _ptr, LP_JIT_CTX_TEXTURES, "textures")
 150
 151
 152
 153 /**
 154  * typedef for fragment shader function
 155  *
 156  * @param context       jit context
 157  * @param x             block start x
 158  * @param y             block start y
 159  * @param facing        is front facing
 160  * @param a0            shader input a0
 161  * @param dadx          shader input dadx
 162  * @param dady          shader input dady
 163  * @param color         color buffer
 164  * @param depth         depth buffer
 165  * @param mask          mask of visible pixels in block
 166  * @param thread_data   task thread data
 167  * @param stride        color buffer row stride in bytes
 168  */
 169 typedef void
 170 (*lp_jit_frag_func)(const struct lp_jit_context *context,
 171                     uint32_t x,
 172                     uint32_t y,
 173                     uint32_t facing,
 174                     const void *a0,
 175                     const void *dadx,
 176                     const void *dady,
 177                     uint8_t **color,
 178                     void *depth,
 179                     uint32_t mask,
 180                     uint32_t *counter,
 181                     unsigned *stride);
 182
 183
 184 void
 185 lp_jit_screen_cleanup(struct llvmpipe_screen *screen);
 186
 187
 188 void
 189 lp_jit_screen_init(struct llvmpipe_screen *screen);
 190
 191
 192 void
 193 lp_jit_init_types(struct lp_fragment_shader_variant *lp);
 194
 195
 196 #endif /* LP_JIT_H */