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_build_format_cache;
  47 struct lp_fragment_shader_variant;
  48 struct llvmpipe_screen;
  49
  50
  51 struct lp_jit_texture
  52 {
  53    uint32_t width;        /* same as number of elements */
  54    uint32_t height;
  55    uint32_t depth;        /* doubles as array size */
  56    uint32_t first_level;
  57    uint32_t last_level;
  58    const void *base;
  59    uint32_t row_stride[LP_MAX_TEXTURE_LEVELS];
  60    uint32_t img_stride[LP_MAX_TEXTURE_LEVELS];
  61    uint32_t mip_offsets[LP_MAX_TEXTURE_LEVELS];
  62 };
  63
  64
  65 struct lp_jit_sampler
  66 {
  67    float min_lod;
  68    float max_lod;
  69    float lod_bias;
  70    float border_color[4];
  71 };
  72
  73
  74 struct lp_jit_viewport
  75 {
  76    float min_depth;
  77    float max_depth;
  78 };
  79
  80
  81 enum {
  82    LP_JIT_TEXTURE_WIDTH = 0,
  83    LP_JIT_TEXTURE_HEIGHT,
  84    LP_JIT_TEXTURE_DEPTH,
  85    LP_JIT_TEXTURE_FIRST_LEVEL,
  86    LP_JIT_TEXTURE_LAST_LEVEL,
  87    LP_JIT_TEXTURE_BASE,
  88    LP_JIT_TEXTURE_ROW_STRIDE,
  89    LP_JIT_TEXTURE_IMG_STRIDE,
  90    LP_JIT_TEXTURE_MIP_OFFSETS,
  91    LP_JIT_TEXTURE_NUM_FIELDS  /* number of fields above */
  92 };
  93
  94
  95 enum {
  96    LP_JIT_SAMPLER_MIN_LOD,
  97    LP_JIT_SAMPLER_MAX_LOD,
  98    LP_JIT_SAMPLER_LOD_BIAS,
  99    LP_JIT_SAMPLER_BORDER_COLOR,
 100    LP_JIT_SAMPLER_NUM_FIELDS  /* number of fields above */
 101 };
 102
 103
 104 enum {
 105    LP_JIT_VIEWPORT_MIN_DEPTH,
 106    LP_JIT_VIEWPORT_MAX_DEPTH,
 107    LP_JIT_VIEWPORT_NUM_FIELDS /* number of fields above */
 108 };
 109
 110
 111 /**
 112  * This structure is passed directly to the generated fragment shader.
 113  *
 114  * It contains the derived state.
 115  *
 116  * Changes here must be reflected in the lp_jit_context_* macros and
 117  * lp_jit_init_types function. Changes to the ordering should be avoided.
 118  *
 119  * Only use types with a clear size and padding here, in particular prefer the
 120  * stdint.h types to the basic integer types.
 121  */
 122 struct lp_jit_context
 123 {
 124    const float *constants[LP_MAX_TGSI_CONST_BUFFERS];
 125    int num_constants[LP_MAX_TGSI_CONST_BUFFERS];
 126
 127    float alpha_ref_value;
 128
 129    uint32_t stencil_ref_front, stencil_ref_back;
 130
 131    uint8_t *u8_blend_color;
 132    float *f_blend_color;
 133
 134    struct lp_jit_viewport *viewports;
 135
 136    struct lp_jit_texture textures[PIPE_MAX_SHADER_SAMPLER_VIEWS];
 137    struct lp_jit_sampler samplers[PIPE_MAX_SAMPLERS];
 138 };
 139
 140
 141 /**
 142  * These enum values must match the position of the fields in the
 143  * lp_jit_context struct above.
 144  */
 145 enum {
 146    LP_JIT_CTX_CONSTANTS = 0,
 147    LP_JIT_CTX_NUM_CONSTANTS,
 148    LP_JIT_CTX_ALPHA_REF,
 149    LP_JIT_CTX_STENCIL_REF_FRONT,
 150    LP_JIT_CTX_STENCIL_REF_BACK,
 151    LP_JIT_CTX_U8_BLEND_COLOR,
 152    LP_JIT_CTX_F_BLEND_COLOR,
 153    LP_JIT_CTX_VIEWPORTS,
 154    LP_JIT_CTX_TEXTURES,
 155    LP_JIT_CTX_SAMPLERS,
 156    LP_JIT_CTX_COUNT
 157 };
 158
 159
 160 #define lp_jit_context_constants(_gallivm, _ptr) \
 161    lp_build_struct_get_ptr(_gallivm, _ptr, LP_JIT_CTX_CONSTANTS, "constants")
 162
 163 #define lp_jit_context_num_constants(_gallivm, _ptr) \
 164    lp_build_struct_get_ptr(_gallivm, _ptr, LP_JIT_CTX_NUM_CONSTANTS, "num_constants")
 165
 166 #define lp_jit_context_alpha_ref_value(_gallivm, _ptr) \
 167    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_ALPHA_REF, "alpha_ref_value")
 168
 169 #define lp_jit_context_stencil_ref_front_value(_gallivm, _ptr) \
 170    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_STENCIL_REF_FRONT, "stencil_ref_front")
 171
 172 #define lp_jit_context_stencil_ref_back_value(_gallivm, _ptr) \
 173    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_STENCIL_REF_BACK, "stencil_ref_back")
 174
 175 #define lp_jit_context_u8_blend_color(_gallivm, _ptr) \
 176    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_U8_BLEND_COLOR, "u8_blend_color")
 177
 178 #define lp_jit_context_f_blend_color(_gallivm, _ptr) \
 179    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_F_BLEND_COLOR, "f_blend_color")
 180
 181 #define lp_jit_context_viewports(_gallivm, _ptr) \
 182    lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_VIEWPORTS, "viewports")
 183
 184 #define lp_jit_context_textures(_gallivm, _ptr) \
 185    lp_build_struct_get_ptr(_gallivm, _ptr, LP_JIT_CTX_TEXTURES, "textures")
 186
 187 #define lp_jit_context_samplers(_gallivm, _ptr) \
 188    lp_build_struct_get_ptr(_gallivm, _ptr, LP_JIT_CTX_SAMPLERS, "samplers")
 189
 190
 191 struct lp_jit_thread_data
 192 {
 193    struct lp_build_format_cache *cache;
 194    uint64_t vis_counter;
 195
 196    /*
 197     * Non-interpolated rasterizer state passed through to the fragment shader.
 198     */
 199    struct {
 200       uint32_t viewport_index;
 201    } raster_state;
 202 };
 203
 204
 205 enum {
 206    LP_JIT_THREAD_DATA_CACHE = 0,
 207    LP_JIT_THREAD_DATA_COUNTER,
 208    LP_JIT_THREAD_DATA_RASTER_STATE_VIEWPORT_INDEX,
 209    LP_JIT_THREAD_DATA_COUNT
 210 };
 211
 212
 213 #define lp_jit_thread_data_cache(_gallivm, _ptr) \
 214    lp_build_struct_get(_gallivm, _ptr, LP_JIT_THREAD_DATA_CACHE, "cache")
 215
 216 #define lp_jit_thread_data_counter(_gallivm, _ptr) \
 217    lp_build_struct_get_ptr(_gallivm, _ptr, LP_JIT_THREAD_DATA_COUNTER, "counter")
 218
 219 #define lp_jit_thread_data_raster_state_viewport_index(_gallivm, _ptr) \
 220    lp_build_struct_get(_gallivm, _ptr, \
 221                        LP_JIT_THREAD_DATA_RASTER_STATE_VIEWPORT_INDEX, \
 222                        "raster_state.viewport_index")
 223
 224 /**
 225  * typedef for fragment shader function
 226  *
 227  * @param context       jit context
 228  * @param x             block start x
 229  * @param y             block start y
 230  * @param facing        is front facing
 231  * @param a0            shader input a0
 232  * @param dadx          shader input dadx
 233  * @param dady          shader input dady
 234  * @param color         color buffer
 235  * @param depth         depth buffer
 236  * @param mask          mask of visible pixels in block
 237  * @param thread_data   task thread data
 238  * @param stride        color buffer row stride in bytes
 239  * @param depth_stride  depth buffer row stride in bytes
 240  */
 241 typedef void
 242 (*lp_jit_frag_func)(const struct lp_jit_context *context,
 243                     uint32_t x,
 244                     uint32_t y,
 245                     uint32_t facing,
 246                     const void *a0,
 247                     const void *dadx,
 248                     const void *dady,
 249                     uint8_t **color,
 250                     uint8_t *depth,
 251                     uint32_t mask,
 252                     struct lp_jit_thread_data *thread_data,
 253                     unsigned *stride,
 254                     unsigned depth_stride);
 255
 256
 257 void
 258 lp_jit_screen_cleanup(struct llvmpipe_screen *screen);
 259
 260
 261 boolean
 262 lp_jit_screen_init(struct llvmpipe_screen *screen);
 263
 264
 265 void
 266 lp_jit_init_types(struct lp_fragment_shader_variant *lp);
 267
 268
 269 #endif /* LP_JIT_H */