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       enum pipe_format format = st_get_view_format(stObj);
  75
  76       /* if resource format matches then YUV wasn't lowered */
  77       if (format == stObj->pt->format)
  78          continue;
  79
  80       switch (format) {
  81       case PIPE_FORMAT_NV12:
  82       case PIPE_FORMAT_P010:
  83       case PIPE_FORMAT_P016:
  84          key.lower_nv12 |= (1 << unit);
  85          break;
  86       case PIPE_FORMAT_IYUV:
  87          key.lower_iyuv |= (1 << unit);
  88          break;
  89       case PIPE_FORMAT_YUYV:
  90          key.lower_yx_xuxv |= (1 << unit);
  91          break;
  92       case PIPE_FORMAT_UYVY:
  93          key.lower_xy_uxvx |= (1 << unit);
  94          break;
  95       case PIPE_FORMAT_AYUV:
  96          key.lower_ayuv |= (1 << unit);
  97          break;
  98       case PIPE_FORMAT_XYUV:
  99          key.lower_xyuv |= (1 << unit);
 100          break;
 101       default:
 102          printf("mesa: st_get_external_sampler_key: unhandled pipe format %u\n",
 103                 format);
 104          break;
 105       }
 106    }
 107
 108    return key;
 109 }
 110
 111 /** Fragment program variant key */
 112 struct st_fp_variant_key
 113 {
 114    struct st_context *st;         /**< variants are per-context */
 115
 116    /** for glBitmap */
 117    GLuint bitmap:1;               /**< glBitmap variant? */
 118
 119    /** for glDrawPixels */
 120    GLuint drawpixels:1;           /**< glDrawPixels variant */
 121    GLuint scaleAndBias:1;         /**< glDrawPixels w/ scale and/or bias? */
 122    GLuint pixelMaps:1;            /**< glDrawPixels w/ pixel lookup map? */
 123
 124    /** for ARB_color_buffer_float */
 125    GLuint clamp_color:1;
 126
 127    /** for ARB_sample_shading */
 128    GLuint persample_shading:1;
 129
 130    /** needed for ATI_fragment_shader */
 131    GLuint fog:2;
 132
 133    /** for ARB_depth_clamp */
 134    GLuint lower_depth_clamp:1;
 135
 136    /** for OpenGL 1.0 on modern hardware */
 137    GLuint lower_two_sided_color:1;
 138
 139    GLuint lower_flatshade:1;
 140    unsigned lower_alpha_func:3;
 141
 142    /** needed for ATI_fragment_shader */
 143    char texture_targets[MAX_NUM_FRAGMENT_REGISTERS_ATI];
 144
 145    struct st_external_sampler_key external;
 146 };
 147
 148 /**
 149  * Base class for shader variants.
 150  */
 151 struct st_variant
 152 {
 153    /** next in linked list */
 154    struct st_variant *next;
 155
 156    /** st_context from the shader key */
 157    struct st_context *st;
 158
 159    void *driver_shader;
 160 };
 161
 162 /**
 163  * Variant of a fragment program.
 164  */
 165 struct st_fp_variant
 166 {
 167    struct st_variant base;
 168
 169    /** Parameters which generated this version of fragment program */
 170    struct st_fp_variant_key key;
 171
 172    /** For glBitmap variants */
 173    uint bitmap_sampler;
 174
 175    /** For glDrawPixels variants */
 176    unsigned drawpix_sampler;
 177    unsigned pixelmap_sampler;
 178 };
 179
 180
 181 /** Shader key shared by other shaders */
 182 struct st_common_variant_key
 183 {
 184    struct st_context *st;          /**< variants are per-context */
 185    bool passthrough_edgeflags;
 186
 187    /** for ARB_color_buffer_float */
 188    bool clamp_color;
 189
 190    /** both for ARB_depth_clamp */
 191    bool lower_depth_clamp;
 192    bool clip_negative_one_to_one;
 193
 194    /** lower glPointSize to gl_PointSize */
 195    boolean lower_point_size;
 196
 197    /* for user-defined clip-planes */
 198    uint8_t lower_ucp;
 199
 200    /* Whether st_variant::driver_shader is for the draw module,
 201     * not for the driver.
 202     */
 203    bool is_draw_shader;
 204 };
 205
 206
 207 /**
 208  * Common shader variant.
 209  */
 210 struct st_common_variant
 211 {
 212    struct st_variant base;
 213
 214    /* Parameters which generated this variant. */
 215    struct st_common_variant_key key;
 216
 217    /* Bitfield of VERT_BIT_* bits matching vertex shader inputs,
 218     * but not include the high part of doubles.
 219     */
 220    GLbitfield vert_attrib_mask;
 221 };
 222
 223
 224 /**
 225  * Derived from Mesa gl_program:
 226  */
 227 struct st_program
 228 {
 229    struct gl_program Base;
 230    struct pipe_shader_state state;
 231    struct glsl_to_tgsi_visitor* glsl_to_tgsi;
 232    struct ati_fragment_shader *ati_fs;
 233    uint64_t affected_states; /**< ST_NEW_* flags to mark dirty when binding */
 234
 235    void *serialized_nir;
 236    unsigned serialized_nir_size;
 237
 238    /* used when bypassing glsl_to_tgsi: */
 239    struct gl_shader_program *shader_program;
 240
 241    struct st_variant *variants;
 242 };
 243
 244
 245 struct st_vertex_program
 246 {
 247    struct st_program Base;
 248
 249    /** maps a TGSI input index back to a Mesa VERT_ATTRIB_x */
 250    ubyte index_to_input[PIPE_MAX_ATTRIBS];
 251    ubyte num_inputs;
 252    /** Reverse mapping of the above */
 253    ubyte input_to_index[VERT_ATTRIB_MAX];
 254
 255    /** Maps VARYING_SLOT_x to slot */
 256    ubyte result_to_output[VARYING_SLOT_MAX];
 257 };
 258
 259
 260 static inline struct st_program *
 261 st_program( struct gl_program *cp )
 262 {
 263    return (struct st_program *)cp;
 264 }
 265
 266 static inline void
 267 st_reference_prog(struct st_context *st,
 268                   struct st_program **ptr,
 269                   struct st_program *prog)
 270 {
 271    _mesa_reference_program(st->ctx,
 272                            (struct gl_program **) ptr,
 273                            (struct gl_program *) prog);
 274 }
 275
 276 static inline struct st_common_variant *
 277 st_common_variant(struct st_variant *v)
 278 {
 279    return (struct st_common_variant*)v;
 280 }
 281
 282 static inline struct st_fp_variant *
 283 st_fp_variant(struct st_variant *v)
 284 {
 285    return (struct st_fp_variant*)v;
 286 }
 287
 288 /**
 289  * This defines mapping from Mesa VARYING_SLOTs to TGSI GENERIC slots.
 290  */
 291 static inline unsigned
 292 st_get_generic_varying_index(struct st_context *st, GLuint attr)
 293 {
 294    return tgsi_get_generic_gl_varying_index((gl_varying_slot)attr,
 295                                             st->needs_texcoord_semantic);
 296 }
 297
 298 extern void
 299 st_set_prog_affected_state_flags(struct gl_program *prog);
 300
 301 extern struct st_common_variant *
 302 st_get_vp_variant(struct st_context *st,
 303                   struct st_program *stvp,
 304                   const struct st_common_variant_key *key);
 305
 306
 307 extern struct st_fp_variant *
 308 st_get_fp_variant(struct st_context *st,
 309                   struct st_program *stfp,
 310                   const struct st_fp_variant_key *key);
 311
 312 extern struct st_variant *
 313 st_get_common_variant(struct st_context *st,
 314                       struct st_program *p,
 315                       const struct st_common_variant_key *key);
 316
 317 extern void
 318 st_release_variants(struct st_context *st, struct st_program *p);
 319
 320 extern void
 321 st_release_program(struct st_context *st, struct st_program **p);
 322
 323 extern void
 324 st_destroy_program_variants(struct st_context *st);
 325
 326 extern void
 327 st_finalize_nir_before_variants(struct nir_shader *nir);
 328
 329 extern void
 330 st_prepare_vertex_program(struct st_program *stvp);
 331
 332 extern void
 333 st_translate_stream_output_info(struct gl_program *prog);
 334
 335 extern bool
 336 st_translate_vertex_program(struct st_context *st,
 337                             struct st_program *stvp);
 338
 339 extern bool
 340 st_translate_fragment_program(struct st_context *st,
 341                               struct st_program *stfp);
 342
 343 extern bool
 344 st_translate_common_program(struct st_context *st,
 345                             struct st_program *stp);
 346
 347 extern void
 348 st_serialize_nir(struct st_program *stp);
 349
 350 extern void
 351 st_finalize_program(struct st_context *st, struct gl_program *prog);
 352
 353 #ifdef __cplusplus
 354 }
 355 #endif
 356
 357 #endif