src/gallium/drivers/llvmpipe/lp_state_fs.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2010 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 SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  18  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  19  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  20  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * The above copyright notice and this permission notice (including the
  23  * next paragraph) shall be included in all copies or substantial portions
  24  * of the Software.
  25  *
  26  **************************************************************************/
  27
  28
  29 #ifndef LP_STATE_FS_H_
  30 #define LP_STATE_FS_H_
  31
  32
  33 #include "pipe/p_compiler.h"
  34 #include "pipe/p_state.h"
  35 #include "tgsi/tgsi_scan.h" /* for tgsi_shader_info */
  36 #include "gallivm/lp_bld_sample.h" /* for struct lp_sampler_static_state */
  37 #include "gallivm/lp_bld_tgsi.h" /* for lp_tgsi_info */
  38 #include "lp_bld_interp.h" /* for struct lp_shader_input */
  39 #include "util/u_inlines.h"
  40
  41 struct tgsi_token;
  42 struct lp_fragment_shader;
  43
  44
  45 /** Indexes into jit_function[] array */
  46 #define RAST_WHOLE 0
  47 #define RAST_EDGE_TEST 1
  48
  49
  50 struct lp_sampler_static_state
  51 {
  52    /*
  53     * These attributes are effectively interleaved for more sane key handling.
  54     * However, there might be lots of null space if the amount of samplers and
  55     * textures isn't the same.
  56     */
  57    struct lp_static_sampler_state sampler_state;
  58    struct lp_static_texture_state texture_state;
  59 };
  60
  61
  62 struct lp_image_static_state
  63 {
  64    struct lp_static_texture_state image_state;
  65 };
  66
  67 struct lp_fragment_shader_variant_key
  68 {
  69    struct pipe_depth_state depth;
  70    struct pipe_stencil_state stencil[2];
  71    struct pipe_blend_state blend;
  72
  73    struct {
  74       unsigned enabled:1;
  75       unsigned func:3;
  76    } alpha;
  77
  78    unsigned nr_cbufs:8;
  79    unsigned nr_samplers:8;      /* actually derivable from just the shader */
  80    unsigned nr_sampler_views:8; /* actually derivable from just the shader */
  81    unsigned nr_images:8;        /* actually derivable from just the shader */
  82    unsigned flatshade:1;
  83    unsigned occlusion_count:1;
  84    unsigned resource_1d:1;
  85    unsigned depth_clamp:1;
  86    unsigned multisample:1;
  87
  88    enum pipe_format zsbuf_format;
  89    enum pipe_format cbuf_format[PIPE_MAX_COLOR_BUFS];
  90
  91    uint8_t cbuf_nr_samples[PIPE_MAX_COLOR_BUFS];
  92    uint8_t zsbuf_nr_samples;
  93    uint8_t coverage_samples;
  94    uint8_t min_samples;
  95
  96    struct lp_sampler_static_state samplers[1];
  97    /* followed by variable number of images */
  98 };
  99
 100 #define LP_FS_MAX_VARIANT_KEY_SIZE                                      \
 101    (sizeof(struct lp_fragment_shader_variant_key) +                     \
 102     PIPE_MAX_SHADER_SAMPLER_VIEWS * sizeof(struct lp_sampler_static_state) +\
 103     PIPE_MAX_SHADER_IMAGES * sizeof(struct lp_image_static_state))
 104
 105 static inline size_t
 106 lp_fs_variant_key_size(unsigned nr_samplers, unsigned nr_images)
 107 {
 108    unsigned samplers = nr_samplers > 1 ? (nr_samplers - 1) : 0;
 109    return (sizeof(struct lp_fragment_shader_variant_key) +
 110            samplers * sizeof(struct lp_sampler_static_state) +
 111            nr_images * sizeof(struct lp_image_static_state));
 112 }
 113
 114 static inline struct lp_image_static_state *
 115 lp_fs_variant_key_images(struct lp_fragment_shader_variant_key *key)
 116 {
 117    return (struct lp_image_static_state *)
 118       &key->samplers[key->nr_samplers];
 119 }
 120
 121 /** doubly-linked list item */
 122 struct lp_fs_variant_list_item
 123 {
 124    struct lp_fragment_shader_variant *base;
 125    struct lp_fs_variant_list_item *next, *prev;
 126 };
 127
 128
 129 struct lp_fragment_shader_variant
 130 {
 131    struct pipe_reference reference;
 132    boolean opaque;
 133
 134    struct gallivm_state *gallivm;
 135
 136    LLVMTypeRef jit_context_ptr_type;
 137    LLVMTypeRef jit_thread_data_ptr_type;
 138    LLVMTypeRef jit_linear_context_ptr_type;
 139
 140    LLVMValueRef function[2];
 141
 142    lp_jit_frag_func jit_function[2];
 143
 144    /* Total number of LLVM instructions generated */
 145    unsigned nr_instrs;
 146
 147    struct lp_fs_variant_list_item list_item_global, list_item_local;
 148    struct lp_fragment_shader *shader;
 149
 150    /* For debugging/profiling purposes */
 151    unsigned no;
 152
 153    /* key is variable-sized, must be last */
 154    struct lp_fragment_shader_variant_key key;
 155 };
 156
 157
 158 /** Subclass of pipe_shader_state */
 159 struct lp_fragment_shader
 160 {
 161    struct pipe_shader_state base;
 162
 163    struct pipe_reference reference;
 164    struct lp_tgsi_info info;
 165
 166    struct lp_fs_variant_list_item variants;
 167
 168    struct draw_fragment_shader *draw_data;
 169
 170    /* For debugging/profiling purposes */
 171    unsigned variant_key_size;
 172    unsigned no;
 173    unsigned variants_created;
 174    unsigned variants_cached;
 175
 176    /** Fragment shader input interpolation info */
 177    struct lp_shader_input inputs[PIPE_MAX_SHADER_INPUTS];
 178 };
 179
 180
 181 void
 182 lp_debug_fs_variant(struct lp_fragment_shader_variant *variant);
 183
 184 void
 185 llvmpipe_destroy_fs(struct llvmpipe_context *llvmpipe,
 186                     struct lp_fragment_shader *shader);
 187
 188 static inline void
 189 lp_fs_reference(struct llvmpipe_context *llvmpipe,
 190                 struct lp_fragment_shader **ptr,
 191                 struct lp_fragment_shader *shader)
 192 {
 193    struct lp_fragment_shader *old_ptr = *ptr;
 194    if (pipe_reference(old_ptr ? &(*ptr)->reference : NULL, shader ? &shader->reference : NULL)) {
 195       llvmpipe_destroy_fs(llvmpipe, old_ptr);
 196    }
 197    *ptr = shader;
 198 }
 199
 200 void
 201 llvmpipe_destroy_shader_variant(struct llvmpipe_context *lp,
 202                                 struct lp_fragment_shader_variant *variant);
 203
 204 static inline void
 205 lp_fs_variant_reference(struct llvmpipe_context *llvmpipe,
 206                         struct lp_fragment_shader_variant **ptr,
 207                         struct lp_fragment_shader_variant *variant)
 208 {
 209    struct lp_fragment_shader_variant *old_ptr = *ptr;
 210    if (pipe_reference(old_ptr ? &(*ptr)->reference : NULL, variant ? &variant->reference : NULL)) {
 211       llvmpipe_destroy_shader_variant(llvmpipe, old_ptr);
 212    }
 213    *ptr = variant;
 214 }
 215
 216 #endif /* LP_STATE_FS_H_ */