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