src/mesa/state_tracker/st_context.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 #ifndef ST_CONTEXT_H
  29 #define ST_CONTEXT_H
  30
  31 #include "main/mtypes.h"
  32 #include "pipe/p_state.h"
  33 #include "state_tracker/st_api.h"
  34 #include "main/fbobject.h"
  35
  36
  37 #ifdef __cplusplus
  38 extern "C" {
  39 #endif
  40
  41
  42 struct bitmap_cache;
  43 struct dd_function_table;
  44 struct draw_context;
  45 struct draw_stage;
  46 struct gen_mipmap_state;
  47 struct st_context;
  48 struct st_fragment_program;
  49 struct st_perf_monitor_group;
  50 struct u_upload_mgr;
  51
  52
  53 /* gap  */
  54 #define ST_NEW_FRAGMENT_PROGRAM        (1 << 1)
  55 #define ST_NEW_VERTEX_PROGRAM          (1 << 2)
  56 #define ST_NEW_FRAMEBUFFER             (1 << 3)
  57 #define ST_NEW_TESS_STATE              (1 << 4)
  58 #define ST_NEW_GEOMETRY_PROGRAM        (1 << 5)
  59 #define ST_NEW_VERTEX_ARRAYS           (1 << 6)
  60 #define ST_NEW_RASTERIZER              (1 << 7)
  61 #define ST_NEW_UNIFORM_BUFFER          (1 << 8)
  62 #define ST_NEW_TESSCTRL_PROGRAM        (1 << 9)
  63 #define ST_NEW_TESSEVAL_PROGRAM        (1 << 10)
  64 #define ST_NEW_SAMPLER_VIEWS           (1 << 11)
  65 #define ST_NEW_ATOMIC_BUFFER           (1 << 12)
  66 #define ST_NEW_STORAGE_BUFFER          (1 << 13)
  67 #define ST_NEW_COMPUTE_PROGRAM         (1 << 14)
  68 #define ST_NEW_IMAGE_UNITS             (1 << 15)
  69
  70
  71 struct st_state_flags {
  72    GLbitfield mesa;  /**< Mask of _NEW_x flags */
  73    uint64_t st;      /**< Mask of ST_NEW_x flags */
  74 };
  75
  76 struct st_tracked_state {
  77    const char *name;
  78    struct st_state_flags dirty;
  79    void (*update)( struct st_context *st );
  80 };
  81
  82
  83 /**
  84  * Enumeration of state tracker pipelines.
  85  */
  86 enum st_pipeline {
  87    ST_PIPELINE_RENDER,
  88    ST_PIPELINE_COMPUTE,
  89 };
  90
  91
  92 /** For drawing quads for glClear, glDraw/CopyPixels, glBitmap, etc. */
  93 struct st_util_vertex
  94 {
  95    float x, y, z;
  96    float r, g, b, a;
  97    float s, t;
  98 };
  99
 100
 101 struct st_context
 102 {
 103    struct st_context_iface iface;
 104
 105    struct gl_context *ctx;
 106
 107    struct pipe_context *pipe;
 108
 109    struct u_upload_mgr *uploader, *indexbuf_uploader, *constbuf_uploader;
 110
 111    struct draw_context *draw;  /**< For selection/feedback/rastpos only */
 112    struct draw_stage *feedback_stage;  /**< For GL_FEEDBACK rendermode */
 113    struct draw_stage *selection_stage;  /**< For GL_SELECT rendermode */
 114    struct draw_stage *rastpos_stage;  /**< For glRasterPos */
 115    GLboolean clamp_frag_color_in_shader;
 116    GLboolean clamp_vert_color_in_shader;
 117    boolean has_stencil_export; /**< can do shader stencil export? */
 118    boolean has_time_elapsed;
 119    boolean has_shader_model3;
 120    boolean has_etc1;
 121    boolean has_etc2;
 122    boolean prefer_blit_based_texture_transfer;
 123    boolean force_persample_in_shader;
 124    boolean has_shareable_shaders;
 125    boolean has_half_float_packing;
 126    boolean has_multi_draw_indirect;
 127
 128    /**
 129     * If a shader can be created when we get its source.
 130     * This means it has only 1 variant, not counting glBitmap and
 131     * glDrawPixels.
 132     */
 133    boolean shader_has_one_variant[MESA_SHADER_STAGES];
 134
 135    boolean needs_texcoord_semantic;
 136    boolean apply_texture_swizzle_to_border_color;
 137
 138    /* On old libGL's for linux we need to invalidate the drawables
 139     * on glViewpport calls, this is set via a option.
 140     */
 141    boolean invalidate_on_gl_viewport;
 142
 143    boolean vertex_array_out_of_memory;
 144
 145    /* Some state is contained in constant objects.
 146     * Other state is just parameter values.
 147     */
 148    struct {
 149       struct pipe_blend_state               blend;
 150       struct pipe_depth_stencil_alpha_state depth_stencil;
 151       struct pipe_rasterizer_state          rasterizer;
 152       struct pipe_sampler_state samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 153       GLuint num_samplers[PIPE_SHADER_TYPES];
 154       struct pipe_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 155       GLuint num_sampler_views[PIPE_SHADER_TYPES];
 156       struct pipe_clip_state clip;
 157       struct {
 158          void *ptr;
 159          unsigned size;
 160       } constants[PIPE_SHADER_TYPES];
 161       struct pipe_framebuffer_state framebuffer;
 162       struct pipe_scissor_state scissor[PIPE_MAX_VIEWPORTS];
 163       struct pipe_viewport_state viewport[PIPE_MAX_VIEWPORTS];
 164       struct {
 165          unsigned num;
 166          boolean include;
 167          struct pipe_scissor_state rects[PIPE_MAX_WINDOW_RECTANGLES];
 168       } window_rects;
 169       unsigned sample_mask;
 170
 171       GLuint poly_stipple[32];  /**< In OpenGL's bottom-to-top order */
 172
 173       GLuint fb_orientation;
 174    } state;
 175
 176    char vendor[100];
 177    char renderer[100];
 178
 179    struct st_state_flags dirty;
 180    struct st_state_flags dirty_cp;
 181
 182    GLboolean vertdata_edgeflags;
 183    GLboolean edgeflag_culls_prims;
 184
 185    /** Mapping from VARYING_SLOT_x to post-transformed vertex slot */
 186    const GLuint *vertex_result_to_slot;
 187
 188    struct st_vertex_program *vp;    /**< Currently bound vertex program */
 189    struct st_fragment_program *fp;  /**< Currently bound fragment program */
 190    struct st_geometry_program *gp;  /**< Currently bound geometry program */
 191    struct st_tessctrl_program *tcp; /**< Currently bound tess control program */
 192    struct st_tesseval_program *tep; /**< Currently bound tess eval program */
 193    struct st_compute_program *cp;   /**< Currently bound compute program */
 194
 195    struct st_vp_variant *vp_variant;
 196    struct st_fp_variant *fp_variant;
 197    struct st_basic_variant *gp_variant;
 198    struct st_basic_variant *tcp_variant;
 199    struct st_basic_variant *tep_variant;
 200    struct st_basic_variant *cp_variant;
 201
 202    struct {
 203       struct pipe_resource *pixelmap_texture;
 204       struct pipe_sampler_view *pixelmap_sampler_view;
 205    } pixel_xfer;
 206
 207    /** for glBitmap */
 208    struct {
 209       struct pipe_rasterizer_state rasterizer;
 210       struct pipe_sampler_state sampler;
 211       struct pipe_sampler_state atlas_sampler;
 212       enum pipe_format tex_format;
 213       void *vs;
 214       struct bitmap_cache *cache;
 215    } bitmap;
 216
 217    /** for glDraw/CopyPixels */
 218    struct {
 219       void *zs_shaders[4];
 220       void *vert_shaders[2];   /**< ureg shaders */
 221    } drawpix;
 222
 223    struct {
 224       GLsizei width, height;
 225       GLenum format, type;
 226       const void *user_pointer;  /**< Last user 'pixels' pointer */
 227       void *image;               /**< Copy of the glDrawPixels image data */
 228       struct pipe_resource *texture;
 229    } drawpix_cache;
 230
 231    /** for glReadPixels */
 232    struct {
 233       struct pipe_resource *src;
 234       struct pipe_resource *cache;
 235       enum pipe_format dst_format;
 236       unsigned level;
 237       unsigned layer;
 238       unsigned hits;
 239    } readpix_cache;
 240
 241    /** for glClear */
 242    struct {
 243       struct pipe_rasterizer_state raster;
 244       struct pipe_viewport_state viewport;
 245       void *vs;
 246       void *fs;
 247       void *vs_layered;
 248       void *gs_layered;
 249    } clear;
 250
 251    /* For gl(Compressed)Tex(Sub)Image */
 252    struct {
 253       struct pipe_rasterizer_state raster;
 254       struct pipe_blend_state upload_blend;
 255       void *vs;
 256       void *gs;
 257       void *upload_fs;
 258       void *download_fs[PIPE_MAX_TEXTURE_TYPES];
 259       bool upload_enabled;
 260       bool download_enabled;
 261       bool rgba_only;
 262       bool layers;
 263       bool use_gs;
 264    } pbo;
 265
 266    /** for drawing with st_util_vertex */
 267    struct pipe_vertex_element util_velems[3];
 268
 269    void *passthrough_fs;  /**< simple pass-through frag shader */
 270
 271    enum pipe_texture_target internal_target;
 272
 273    struct cso_context *cso_context;
 274
 275    void *winsys_drawable_handle;
 276
 277    /* The number of vertex buffers from the last call of validate_arrays. */
 278    unsigned last_num_vbuffers;
 279
 280    int32_t draw_stamp;
 281    int32_t read_stamp;
 282
 283    struct st_config_options options;
 284
 285    struct st_perf_monitor_group *perfmon;
 286 };
 287
 288
 289 /* Need this so that we can implement Mesa callbacks in this module.
 290  */
 291 static inline struct st_context *st_context(struct gl_context *ctx)
 292 {
 293    return ctx->st;
 294 }
 295
 296
 297 /**
 298  * Wrapper for struct gl_framebuffer.
 299  * This is an opaque type to the outside world.
 300  */
 301 struct st_framebuffer
 302 {
 303    struct gl_framebuffer Base;
 304    void *Private;
 305
 306    struct st_framebuffer_iface *iface;
 307    enum st_attachment_type statts[ST_ATTACHMENT_COUNT];
 308    unsigned num_statts;
 309    int32_t stamp;
 310    int32_t iface_stamp;
 311 };
 312
 313
 314 extern void st_init_driver_functions(struct pipe_screen *screen,
 315                                      struct dd_function_table *functions);
 316
 317 void st_invalidate_state(struct gl_context * ctx, GLbitfield new_state);
 318
 319 void st_invalidate_readpix_cache(struct st_context *st);
 320
 321
 322 #define Y_0_TOP 1
 323 #define Y_0_BOTTOM 2
 324
 325 static inline GLuint
 326 st_fb_orientation(const struct gl_framebuffer *fb)
 327 {
 328    if (fb && _mesa_is_winsys_fbo(fb)) {
 329       /* Drawing into a window (on-screen buffer).
 330        *
 331        * Negate Y scale to flip image vertically.
 332        * The NDC Y coords prior to viewport transformation are in the range
 333        * [y=-1=bottom, y=1=top]
 334        * Hardware window coords are in the range [y=0=top, y=H-1=bottom] where
 335        * H is the window height.
 336        * Use the viewport transformation to invert Y.
 337        */
 338       return Y_0_TOP;
 339    }
 340    else {
 341       /* Drawing into user-created FBO (very likely a texture).
 342        *
 343        * For textures, T=0=Bottom, so by extension Y=0=Bottom for rendering.
 344        */
 345       return Y_0_BOTTOM;
 346    }
 347 }
 348
 349
 350 static inline unsigned
 351 st_shader_stage_to_ptarget(gl_shader_stage stage)
 352 {
 353    switch (stage) {
 354    case MESA_SHADER_VERTEX:
 355       return PIPE_SHADER_VERTEX;
 356    case MESA_SHADER_FRAGMENT:
 357       return PIPE_SHADER_FRAGMENT;
 358    case MESA_SHADER_GEOMETRY:
 359       return PIPE_SHADER_GEOMETRY;
 360    case MESA_SHADER_TESS_CTRL:
 361       return PIPE_SHADER_TESS_CTRL;
 362    case MESA_SHADER_TESS_EVAL:
 363       return PIPE_SHADER_TESS_EVAL;
 364    case MESA_SHADER_COMPUTE:
 365       return PIPE_SHADER_COMPUTE;
 366    }
 367
 368    assert(!"should not be reached");
 369    return PIPE_SHADER_VERTEX;
 370 }
 371
 372
 373 /** clear-alloc a struct-sized object, with casting */
 374 #define ST_CALLOC_STRUCT(T)   (struct T *) calloc(1, sizeof(struct T))
 375
 376
 377 extern struct st_context *
 378 st_create_context(gl_api api, struct pipe_context *pipe,
 379                   const struct gl_config *visual,
 380                   struct st_context *share,
 381                   const struct st_config_options *options);
 382
 383 extern void
 384 st_destroy_context(struct st_context *st);
 385
 386
 387 #ifdef __cplusplus
 388 }
 389 #endif
 390
 391 #endif