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
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  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 "state_tracker/st_api.h"
  33 #include "main/fbobject.h"
  34 #include "state_tracker/st_atom.h"
  35 #include "util/u_helpers.h"
  36 #include "util/u_inlines.h"
  37 #include "util/list.h"
  38 #include "vbo/vbo.h"
  39
  40
  41 #ifdef __cplusplus
  42 extern "C" {
  43 #endif
  44
  45
  46 struct dd_function_table;
  47 struct draw_context;
  48 struct draw_stage;
  49 struct gen_mipmap_state;
  50 struct st_context;
  51 struct st_fragment_program;
  52 struct st_perf_monitor_group;
  53 struct u_upload_mgr;
  54
  55
  56 /** For drawing quads for glClear, glDraw/CopyPixels, glBitmap, etc. */
  57 struct st_util_vertex
  58 {
  59    float x, y, z;
  60    float r, g, b, a;
  61    float s, t;
  62 };
  63
  64 struct st_bitmap_cache
  65 {
  66    /** Window pos to render the cached image */
  67    GLint xpos, ypos;
  68    /** Bounds of region used in window coords */
  69    GLint xmin, ymin, xmax, ymax;
  70
  71    GLfloat color[4];
  72
  73    /** Bitmap's Z position */
  74    GLfloat zpos;
  75
  76    struct pipe_resource *texture;
  77    struct pipe_transfer *trans;
  78
  79    GLboolean empty;
  80
  81    /** An I8 texture image: */
  82    ubyte *buffer;
  83 };
  84
  85 struct st_bound_handles
  86 {
  87    unsigned num_handles;
  88    uint64_t *handles;
  89 };
  90
  91
  92 #define NUM_DRAWPIX_CACHE_ENTRIES 4
  93
  94 struct drawpix_cache_entry
  95 {
  96    GLsizei width, height;
  97    GLenum format, type;
  98    const void *user_pointer;  /**< Last user 'pixels' pointer */
  99    void *image;               /**< Copy of the glDrawPixels image data */
 100    struct pipe_resource *texture;
 101    unsigned age;
 102 };
 103
 104
 105 struct st_context
 106 {
 107    struct st_context_iface iface;
 108
 109    struct gl_context *ctx;
 110
 111    struct pipe_context *pipe;
 112
 113    struct draw_context *draw;  /**< For selection/feedback/rastpos only */
 114    struct draw_stage *feedback_stage;  /**< For GL_FEEDBACK rendermode */
 115    struct draw_stage *selection_stage;  /**< For GL_SELECT rendermode */
 116    struct draw_stage *rastpos_stage;  /**< For glRasterPos */
 117    GLboolean clamp_frag_color_in_shader;
 118    GLboolean clamp_vert_color_in_shader;
 119    boolean has_stencil_export; /**< can do shader stencil export? */
 120    boolean has_time_elapsed;
 121    boolean has_shader_model3;
 122    boolean has_etc1;
 123    boolean has_etc2;
 124    boolean has_astc_2d_ldr;
 125    boolean prefer_blit_based_texture_transfer;
 126    boolean force_persample_in_shader;
 127    boolean has_shareable_shaders;
 128    boolean has_half_float_packing;
 129    boolean has_multi_draw_indirect;
 130    boolean has_single_pipe_stat;
 131    boolean can_bind_const_buffer_as_vertex;
 132
 133    /**
 134     * If a shader can be created when we get its source.
 135     * This means it has only 1 variant, not counting glBitmap and
 136     * glDrawPixels.
 137     */
 138    boolean shader_has_one_variant[MESA_SHADER_STAGES];
 139
 140    boolean needs_texcoord_semantic;
 141    boolean apply_texture_swizzle_to_border_color;
 142
 143    /* On old libGL's for linux we need to invalidate the drawables
 144     * on glViewpport calls, this is set via a option.
 145     */
 146    boolean invalidate_on_gl_viewport;
 147    boolean draw_needs_minmax_index;
 148    boolean vertex_array_out_of_memory;
 149    boolean has_hw_atomics;
 150
 151    /* Some state is contained in constant objects.
 152     * Other state is just parameter values.
 153     */
 154    struct {
 155       struct pipe_blend_state               blend;
 156       struct pipe_depth_stencil_alpha_state depth_stencil;
 157       struct pipe_rasterizer_state          rasterizer;
 158       struct pipe_sampler_state frag_samplers[PIPE_MAX_SAMPLERS];
 159       GLuint num_frag_samplers;
 160       struct pipe_sampler_view *frag_sampler_views[PIPE_MAX_SAMPLERS];
 161       GLuint num_sampler_views[PIPE_SHADER_TYPES];
 162       struct pipe_clip_state clip;
 163       struct {
 164          void *ptr;
 165          unsigned size;
 166       } constants[PIPE_SHADER_TYPES];
 167       unsigned fb_width;
 168       unsigned fb_height;
 169       unsigned fb_num_samples;
 170       unsigned fb_num_layers;
 171       unsigned fb_num_cb;
 172       unsigned num_viewports;
 173       struct pipe_scissor_state scissor[PIPE_MAX_VIEWPORTS];
 174       struct pipe_viewport_state viewport[PIPE_MAX_VIEWPORTS];
 175       struct {
 176          unsigned num;
 177          boolean include;
 178          struct pipe_scissor_state rects[PIPE_MAX_WINDOW_RECTANGLES];
 179       } window_rects;
 180
 181       GLuint poly_stipple[32];  /**< In OpenGL's bottom-to-top order */
 182
 183       GLuint fb_orientation;
 184
 185       bool enable_sample_locations;
 186       unsigned sample_locations_samples;
 187       uint8_t sample_locations[
 188          PIPE_MAX_SAMPLE_LOCATION_GRID_SIZE *
 189          PIPE_MAX_SAMPLE_LOCATION_GRID_SIZE * 32];
 190    } state;
 191
 192    uint64_t dirty; /**< dirty states */
 193
 194    /** This masks out unused shader resources. Only valid in draw calls. */
 195    uint64_t active_states;
 196
 197    unsigned pin_thread_counter; /* for L3 thread pinning on AMD Zen */
 198
 199    /* If true, further analysis of states is required to know if something
 200     * has changed. Used mainly for shaders.
 201     */
 202    bool gfx_shaders_may_be_dirty;
 203    bool compute_shader_may_be_dirty;
 204
 205    GLboolean vertdata_edgeflags;
 206    GLboolean edgeflag_culls_prims;
 207
 208    struct st_vertex_program *vp;    /**< Currently bound vertex program */
 209    struct st_fragment_program *fp;  /**< Currently bound fragment program */
 210    struct st_common_program *gp;  /**< Currently bound geometry program */
 211    struct st_common_program *tcp; /**< Currently bound tess control program */
 212    struct st_common_program *tep; /**< Currently bound tess eval program */
 213    struct st_compute_program *cp;   /**< Currently bound compute program */
 214
 215    struct st_vp_variant *vp_variant;
 216
 217    struct {
 218       struct pipe_resource *pixelmap_texture;
 219       struct pipe_sampler_view *pixelmap_sampler_view;
 220    } pixel_xfer;
 221
 222    /** for glBitmap */
 223    struct {
 224       struct pipe_rasterizer_state rasterizer;
 225       struct pipe_sampler_state sampler;
 226       struct pipe_sampler_state atlas_sampler;
 227       enum pipe_format tex_format;
 228       struct st_bitmap_cache cache;
 229    } bitmap;
 230
 231    /** for glDraw/CopyPixels */
 232    struct {
 233       void *zs_shaders[4];
 234    } drawpix;
 235
 236    /** Cache of glDrawPixels images */
 237    struct {
 238       struct drawpix_cache_entry entries[NUM_DRAWPIX_CACHE_ENTRIES];
 239       unsigned age;
 240    } drawpix_cache;
 241
 242    /** for glReadPixels */
 243    struct {
 244       struct pipe_resource *src;
 245       struct pipe_resource *cache;
 246       enum pipe_format dst_format;
 247       unsigned level;
 248       unsigned layer;
 249       unsigned hits;
 250    } readpix_cache;
 251
 252    /** for glClear */
 253    struct {
 254       struct pipe_rasterizer_state raster;
 255       struct pipe_viewport_state viewport;
 256       void *vs;
 257       void *fs;
 258       void *vs_layered;
 259       void *gs_layered;
 260    } clear;
 261
 262    /* For gl(Compressed)Tex(Sub)Image */
 263    struct {
 264       struct pipe_rasterizer_state raster;
 265       struct pipe_blend_state upload_blend;
 266       void *vs;
 267       void *gs;
 268       void *upload_fs[3];
 269       void *download_fs[3][PIPE_MAX_TEXTURE_TYPES];
 270       bool upload_enabled;
 271       bool download_enabled;
 272       bool rgba_only;
 273       bool layers;
 274       bool use_gs;
 275    } pbo;
 276
 277    /** for drawing with st_util_vertex */
 278    struct pipe_vertex_element util_velems[3];
 279
 280    /** passthrough vertex shader matching the util_velem attributes */
 281    void *passthrough_vs;
 282
 283    enum pipe_texture_target internal_target;
 284
 285    struct cso_context *cso_context;
 286
 287    void *winsys_drawable_handle;
 288
 289    /* The number of vertex buffers from the last call of validate_arrays. */
 290    unsigned last_num_vbuffers;
 291
 292    int32_t draw_stamp;
 293    int32_t read_stamp;
 294
 295    struct st_config_options options;
 296
 297    struct st_perf_monitor_group *perfmon;
 298
 299    enum pipe_reset_status reset_status;
 300
 301    /* Array of bound texture/image handles which are resident in the context.
 302     */
 303    struct st_bound_handles bound_texture_handles[PIPE_SHADER_TYPES];
 304    struct st_bound_handles bound_image_handles[PIPE_SHADER_TYPES];
 305
 306    /* Winsys buffers */
 307    struct list_head winsys_buffers;
 308
 309    /* Throttling for texture uploads and similar operations to limit memory
 310     * usage by limiting the number of in-flight operations based on
 311     * the estimated allocated size needed to execute those operations.
 312     */
 313    struct util_throttle throttle;
 314 };
 315
 316
 317 /* Need this so that we can implement Mesa callbacks in this module.
 318  */
 319 static inline struct st_context *st_context(struct gl_context *ctx)
 320 {
 321    return ctx->st;
 322 }
 323
 324
 325 /**
 326  * Wrapper for struct gl_framebuffer.
 327  * This is an opaque type to the outside world.
 328  */
 329 struct st_framebuffer
 330 {
 331    struct gl_framebuffer Base;
 332
 333    struct st_framebuffer_iface *iface;
 334    enum st_attachment_type statts[ST_ATTACHMENT_COUNT];
 335    unsigned num_statts;
 336    int32_t stamp;
 337    int32_t iface_stamp;
 338    uint32_t iface_ID;
 339
 340    /* list of framebuffer objects */
 341    struct list_head head;
 342 };
 343
 344
 345 extern void st_init_driver_functions(struct pipe_screen *screen,
 346                                      struct dd_function_table *functions);
 347
 348 void
 349 st_invalidate_buffers(struct st_context *st);
 350
 351 /* Invalidate the readpixels cache to ensure we don't read stale data.
 352  */
 353 static inline void
 354 st_invalidate_readpix_cache(struct st_context *st)
 355 {
 356    if (unlikely(st->readpix_cache.src)) {
 357       pipe_resource_reference(&st->readpix_cache.src, NULL);
 358       pipe_resource_reference(&st->readpix_cache.cache, NULL);
 359    }
 360 }
 361
 362
 363 #define Y_0_TOP 1
 364 #define Y_0_BOTTOM 2
 365
 366 static inline GLuint
 367 st_fb_orientation(const struct gl_framebuffer *fb)
 368 {
 369    if (fb && _mesa_is_winsys_fbo(fb)) {
 370       /* Drawing into a window (on-screen buffer).
 371        *
 372        * Negate Y scale to flip image vertically.
 373        * The NDC Y coords prior to viewport transformation are in the range
 374        * [y=-1=bottom, y=1=top]
 375        * Hardware window coords are in the range [y=0=top, y=H-1=bottom] where
 376        * H is the window height.
 377        * Use the viewport transformation to invert Y.
 378        */
 379       return Y_0_TOP;
 380    }
 381    else {
 382       /* Drawing into user-created FBO (very likely a texture).
 383        *
 384        * For textures, T=0=Bottom, so by extension Y=0=Bottom for rendering.
 385        */
 386       return Y_0_BOTTOM;
 387    }
 388 }
 389
 390
 391 static inline bool
 392 st_user_clip_planes_enabled(struct gl_context *ctx)
 393 {
 394    return (ctx->API == API_OPENGL_COMPAT ||
 395            ctx->API == API_OPENGLES) && /* only ES 1.x */
 396           ctx->Transform.ClipPlanesEnabled;
 397 }
 398
 399 /** clear-alloc a struct-sized object, with casting */
 400 #define ST_CALLOC_STRUCT(T)   (struct T *) calloc(1, sizeof(struct T))
 401
 402
 403 extern struct st_context *
 404 st_create_context(gl_api api, struct pipe_context *pipe,
 405                   const struct gl_config *visual,
 406                   struct st_context *share,
 407                   const struct st_config_options *options,
 408                   bool no_error);
 409
 410 extern void
 411 st_destroy_context(struct st_context *st);
 412
 413 uint64_t
 414 st_get_active_states(struct gl_context *ctx);
 415
 416
 417 #ifdef __cplusplus
 418 }
 419 #endif
 420
 421 #endif