src/mesa/state_tracker/st_program.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 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   * Authors:
  30   *   Keith Whitwell <keithw@vmware.com>
  31   */
  32
  33
  34 #ifndef ST_PROGRAM_H
  35 #define ST_PROGRAM_H
  36
  37 #include "main/mtypes.h"
  38 #include "main/atifragshader.h"
  39 #include "program/program.h"
  40 #include "pipe/p_state.h"
  41 #include "tgsi/tgsi_from_mesa.h"
  42 #include "st_context.h"
  43 #include "st_texture.h"
  44 #include "st_glsl_to_tgsi.h"
  45
  46 #ifdef __cplusplus
  47 extern "C" {
  48 #endif
  49
  50 #define ST_DOUBLE_ATTRIB_PLACEHOLDER 0xff
  51
  52 struct st_external_sampler_key
  53 {
  54    GLuint lower_nv12;             /**< bitmask of 2 plane YUV samplers */
  55    GLuint lower_iyuv;             /**< bitmask of 3 plane YUV samplers */
  56    GLuint lower_xy_uxvx;          /**< bitmask of 2 plane YUV samplers */
  57    GLuint lower_yx_xuxv;          /**< bitmask of 2 plane YUV samplers */
  58    GLuint lower_ayuv;
  59    GLuint lower_xyuv;
  60 };
  61
  62 static inline struct st_external_sampler_key
  63 st_get_external_sampler_key(struct st_context *st, struct gl_program *prog)
  64 {
  65    unsigned mask = prog->ExternalSamplersUsed;
  66    struct st_external_sampler_key key;
  67
  68    memset(&key, 0, sizeof(key));
  69
  70    while (unlikely(mask)) {
  71       unsigned unit = u_bit_scan(&mask);
  72       struct st_texture_object *stObj =
  73             st_get_texture_object(st->ctx, prog, unit);
  74
  75       switch (st_get_view_format(stObj)) {
  76       case PIPE_FORMAT_NV12:
  77       case PIPE_FORMAT_P016:
  78          key.lower_nv12 |= (1 << unit);
  79          break;
  80       case PIPE_FORMAT_IYUV:
  81          key.lower_iyuv |= (1 << unit);
  82          break;
  83       case PIPE_FORMAT_YUYV:
  84          key.lower_yx_xuxv |= (1 << unit);
  85          break;
  86       case PIPE_FORMAT_UYVY:
  87          key.lower_xy_uxvx |= (1 << unit);
  88          break;
  89       case PIPE_FORMAT_AYUV:
  90          key.lower_ayuv |= (1 << unit);
  91          break;
  92       case PIPE_FORMAT_XYUV:
  93          key.lower_xyuv |= (1 << unit);
  94          break;
  95       default:
  96          printf("mesa: st_get_external_sampler_key: unhandled pipe format %u\n",
  97                st_get_view_format(stObj));
  98          break;
  99       }
 100    }
 101
 102    return key;
 103 }
 104
 105 /** Fragment program variant key */
 106 struct st_fp_variant_key
 107 {
 108    struct st_context *st;         /**< variants are per-context */
 109
 110    /** for glBitmap */
 111    GLuint bitmap:1;               /**< glBitmap variant? */
 112
 113    /** for glDrawPixels */
 114    GLuint drawpixels:1;           /**< glDrawPixels variant */
 115    GLuint scaleAndBias:1;         /**< glDrawPixels w/ scale and/or bias? */
 116    GLuint pixelMaps:1;            /**< glDrawPixels w/ pixel lookup map? */
 117
 118    /** for ARB_color_buffer_float */
 119    GLuint clamp_color:1;
 120
 121    /** for ARB_sample_shading */
 122    GLuint persample_shading:1;
 123
 124    /** needed for ATI_fragment_shader */
 125    GLuint fog:2;
 126
 127    /** for ARB_depth_clamp */
 128    GLuint lower_depth_clamp:1;
 129
 130    /** for OpenGL 1.0 on modern hardware */
 131    GLuint lower_two_sided_color:1;
 132
 133    GLuint lower_flatshade:1;
 134    enum compare_func lower_alpha_func:3;
 135
 136    /** needed for ATI_fragment_shader */
 137    char texture_targets[MAX_NUM_FRAGMENT_REGISTERS_ATI];
 138
 139    struct st_external_sampler_key external;
 140 };
 141
 142 /**
 143  * Base class for shader variants.
 144  */
 145 struct st_variant
 146 {
 147    /** next in linked list */
 148    struct st_variant *next;
 149
 150    /** st_context from the shader key */
 151    struct st_context *st;
 152
 153    void *driver_shader;
 154 };
 155
 156 /**
 157  * Variant of a fragment program.
 158  */
 159 struct st_fp_variant
 160 {
 161    struct st_variant base;
 162
 163    /** Parameters which generated this version of fragment program */
 164    struct st_fp_variant_key key;
 165
 166    /** For glBitmap variants */
 167    uint bitmap_sampler;
 168
 169    /** For glDrawPixels variants */
 170    unsigned drawpix_sampler;
 171    unsigned pixelmap_sampler;
 172 };
 173
 174
 175 /** Shader key shared by other shaders */
 176 struct st_common_variant_key
 177 {
 178    struct st_context *st;          /**< variants are per-context */
 179    bool passthrough_edgeflags;
 180
 181    /** for ARB_color_buffer_float */
 182    bool clamp_color;
 183
 184    /** both for ARB_depth_clamp */
 185    bool lower_depth_clamp;
 186    bool clip_negative_one_to_one;
 187
 188    /** lower glPointSize to gl_PointSize */
 189    boolean lower_point_size;
 190
 191    /* for user-defined clip-planes */
 192    uint8_t lower_ucp;
 193 };
 194
 195
 196 /**
 197  * This represents a vertex program, especially translated to match
 198  * the inputs of a particular fragment shader.
 199  */
 200 struct st_vp_variant
 201 {
 202    struct st_variant base;
 203
 204    /* Parameters which generated this translated version of a vertex
 205     * shader:
 206     */
 207    struct st_common_variant_key key;
 208
 209    /**
 210     * The shader variant saved for the draw module to later emulate
 211     * selection/feedback/rasterpos.
 212     */
 213    const struct tgsi_token *tokens;
 214
 215    /** For using our private draw module (glRasterPos) */
 216    struct draw_vertex_shader *draw_shader;
 217
 218    /** similar to that in st_vertex_program, but with edgeflags info too */
 219    GLuint num_inputs;
 220
 221    /** Bitfield of VERT_BIT_* bits of mesa vertex processing inputs */
 222    GLbitfield vert_attrib_mask;
 223 };
 224
 225
 226 /**
 227  * Common shader variant.
 228  */
 229 struct st_common_variant
 230 {
 231    struct st_variant base;
 232
 233    /* Parameters which generated this variant. */
 234    struct st_common_variant_key key;
 235 };
 236
 237
 238 /**
 239  * Derived from Mesa gl_program:
 240  */
 241 struct st_program
 242 {
 243    struct gl_program Base;
 244    struct pipe_shader_state state;
 245    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 246    struct ati_fragment_shader *ati_fs;
 247    uint64_t affected_states; /**< ST_NEW_* flags to mark dirty when binding */
 248
 249    /* used when bypassing glsl_to_tgsi: */
 250    struct gl_shader_program *shader_program;
 251
 252    struct st_variant *variants;
 253 };
 254
 255
 256 struct st_vertex_program
 257 {
 258    struct st_program Base;
 259
 260    /** maps a TGSI input index back to a Mesa VERT_ATTRIB_x */
 261    ubyte index_to_input[PIPE_MAX_ATTRIBS];
 262    ubyte num_inputs;
 263    /** Reverse mapping of the above */
 264    ubyte input_to_index[VERT_ATTRIB_MAX];
 265
 266    /** Maps VARYING_SLOT_x to slot */
 267    ubyte result_to_output[VARYING_SLOT_MAX];
 268 };
 269
 270
 271 static inline struct st_program *
 272 st_program( struct gl_program *cp )
 273 {
 274    return (struct st_program *)cp;
 275 }
 276
 277 static inline void
 278 st_reference_prog(struct st_context *st,
 279                   struct st_program **ptr,
 280                   struct st_program *prog)
 281 {
 282    _mesa_reference_program(st->ctx,
 283                            (struct gl_program **) ptr,
 284                            (struct gl_program *) prog);
 285 }
 286
 287 static inline struct st_common_variant *
 288 st_common_variant(struct st_variant *v)
 289 {
 290    return (struct st_common_variant*)v;
 291 }
 292
 293 static inline struct st_vp_variant *
 294 st_vp_variant(struct st_variant *v)
 295 {
 296    return (struct st_vp_variant*)v;
 297 }
 298
 299 static inline struct st_fp_variant *
 300 st_fp_variant(struct st_variant *v)
 301 {
 302    return (struct st_fp_variant*)v;
 303 }
 304
 305 /**
 306  * This defines mapping from Mesa VARYING_SLOTs to TGSI GENERIC slots.
 307  */
 308 static inline unsigned
 309 st_get_generic_varying_index(struct st_context *st, GLuint attr)
 310 {
 311    return tgsi_get_generic_gl_varying_index((gl_varying_slot)attr,
 312                                             st->needs_texcoord_semantic);
 313 }
 314
 315 extern void
 316 st_set_prog_affected_state_flags(struct gl_program *prog);
 317
 318 extern struct st_vp_variant *
 319 st_get_vp_variant(struct st_context *st,
 320                   struct st_program *stvp,
 321                   const struct st_common_variant_key *key);
 322
 323
 324 extern struct st_fp_variant *
 325 st_get_fp_variant(struct st_context *st,
 326                   struct st_program *stfp,
 327                   const struct st_fp_variant_key *key);
 328
 329 extern struct st_variant *
 330 st_get_common_variant(struct st_context *st,
 331                       struct st_program *p,
 332                       const struct st_common_variant_key *key);
 333
 334 extern void
 335 st_release_variants(struct st_context *st, struct st_program *p);
 336
 337 extern void
 338 st_destroy_program_variants(struct st_context *st);
 339
 340 extern void
 341 st_finalize_nir_before_variants(struct nir_shader *nir);
 342
 343 extern void
 344 st_prepare_vertex_program(struct st_program *stvp);
 345
 346 extern void
 347 st_translate_stream_output_info(struct gl_program *prog);
 348
 349 extern bool
 350 st_translate_vertex_program(struct st_context *st,
 351                             struct st_program *stvp);
 352
 353 extern bool
 354 st_translate_fragment_program(struct st_context *st,
 355                               struct st_program *stfp);
 356
 357 extern bool
 358 st_translate_common_program(struct st_context *st,
 359                             struct st_program *stp);
 360
 361 extern void
 362 st_finalize_program(struct st_context *st, struct gl_program *prog);
 363
 364 #ifdef __cplusplus
 365 }
 366 #endif
 367
 368 #endif