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
  68
  69 struct st_state_flags {
  70    GLbitfield mesa;  /**< Mask of _NEW_x flags */
  71    uint64_t st;      /**< Mask of ST_NEW_x flags */
  72 };
  73
  74 struct st_tracked_state {
  75    const char *name;
  76    struct st_state_flags dirty;
  77    void (*update)( struct st_context *st );
  78 };
  79
  80
  81
  82 struct st_context
  83 {
  84    struct st_context_iface iface;
  85
  86    struct gl_context *ctx;
  87
  88    struct pipe_context *pipe;
  89
  90    struct u_upload_mgr *uploader, *indexbuf_uploader, *constbuf_uploader;
  91
  92    struct draw_context *draw;  /**< For selection/feedback/rastpos only */
  93    struct draw_stage *feedback_stage;  /**< For GL_FEEDBACK rendermode */
  94    struct draw_stage *selection_stage;  /**< For GL_SELECT rendermode */
  95    struct draw_stage *rastpos_stage;  /**< For glRasterPos */
  96    GLboolean clamp_frag_color_in_shader;
  97    GLboolean clamp_vert_color_in_shader;
  98    boolean has_stencil_export; /**< can do shader stencil export? */
  99    boolean has_time_elapsed;
 100    boolean has_shader_model3;
 101    boolean has_etc1;
 102    boolean has_etc2;
 103    boolean prefer_blit_based_texture_transfer;
 104    boolean force_persample_in_shader;
 105    boolean has_shareable_shaders;
 106    boolean has_half_float_packing;
 107    boolean has_multi_draw_indirect;
 108
 109    /**
 110     * If a shader can be created when we get its source.
 111     * This means it has only 1 variant, not counting glBitmap and
 112     * glDrawPixels.
 113     */
 114    boolean shader_has_one_variant[MESA_SHADER_STAGES];
 115
 116    boolean needs_texcoord_semantic;
 117    boolean apply_texture_swizzle_to_border_color;
 118
 119    /* On old libGL's for linux we need to invalidate the drawables
 120     * on glViewpport calls, this is set via a option.
 121     */
 122    boolean invalidate_on_gl_viewport;
 123
 124    boolean vertex_array_out_of_memory;
 125
 126    /* Some state is contained in constant objects.
 127     * Other state is just parameter values.
 128     */
 129    struct {
 130       struct pipe_blend_state               blend;
 131       struct pipe_depth_stencil_alpha_state depth_stencil;
 132       struct pipe_rasterizer_state          rasterizer;
 133       struct pipe_sampler_state samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 134       GLuint num_samplers[PIPE_SHADER_TYPES];
 135       struct pipe_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 136       GLuint num_sampler_views[PIPE_SHADER_TYPES];
 137       struct pipe_clip_state clip;
 138       struct {
 139          void *ptr;
 140          unsigned size;
 141       } constants[PIPE_SHADER_TYPES];
 142       struct pipe_framebuffer_state framebuffer;
 143       struct pipe_scissor_state scissor[PIPE_MAX_VIEWPORTS];
 144       struct pipe_viewport_state viewport[PIPE_MAX_VIEWPORTS];
 145       unsigned sample_mask;
 146
 147       GLuint poly_stipple[32];  /**< In OpenGL's bottom-to-top order */
 148
 149       GLuint fb_orientation;
 150    } state;
 151
 152    char vendor[100];
 153    char renderer[100];
 154
 155    struct st_state_flags dirty;
 156
 157    GLboolean vertdata_edgeflags;
 158    GLboolean edgeflag_culls_prims;
 159
 160    /** Mapping from VARYING_SLOT_x to post-transformed vertex slot */
 161    const GLuint *vertex_result_to_slot;
 162
 163    struct st_vertex_program *vp;    /**< Currently bound vertex program */
 164    struct st_fragment_program *fp;  /**< Currently bound fragment program */
 165    struct st_geometry_program *gp;  /**< Currently bound geometry program */
 166    struct st_tessctrl_program *tcp; /**< Currently bound tess control program */
 167    struct st_tesseval_program *tep; /**< Currently bound tess eval program */
 168
 169    struct st_vp_variant *vp_variant;
 170    struct st_fp_variant *fp_variant;
 171    struct st_gp_variant *gp_variant;
 172    struct st_tcp_variant *tcp_variant;
 173    struct st_tep_variant *tep_variant;
 174
 175    struct gl_texture_object *default_texture;
 176
 177    struct {
 178       struct pipe_resource *pixelmap_texture;
 179       struct pipe_sampler_view *pixelmap_sampler_view;
 180    } pixel_xfer;
 181
 182    /** for glBitmap */
 183    struct {
 184       struct pipe_rasterizer_state rasterizer;
 185       struct pipe_sampler_state samplers[2];
 186       enum pipe_format tex_format;
 187       void *vs;
 188       struct bitmap_cache *cache;
 189    } bitmap;
 190
 191    /** for glDraw/CopyPixels */
 192    struct {
 193       void *zs_shaders[4];
 194       void *vert_shaders[2];   /**< ureg shaders */
 195    } drawpix;
 196
 197    /** for glClear */
 198    struct {
 199       struct pipe_rasterizer_state raster;
 200       struct pipe_viewport_state viewport;
 201       void *vs;
 202       void *fs;
 203       void *vs_layered;
 204       void *gs_layered;
 205    } clear;
 206
 207    /* For gl(Compressed)Tex(Sub)Image */
 208    struct {
 209       struct pipe_rasterizer_state raster;
 210       struct pipe_blend_state blend;
 211       void *vs;
 212       void *gs;
 213       void *fs;
 214       bool enabled;
 215       bool rgba_only;
 216       bool upload_layers;
 217       bool use_gs;
 218    } pbo_upload;
 219
 220    /** used for anything using util_draw_vertex_buffer */
 221    struct pipe_vertex_element velems_util_draw[3];
 222
 223    void *passthrough_fs;  /**< simple pass-through frag shader */
 224
 225    enum pipe_texture_target internal_target;
 226
 227    struct cso_context *cso_context;
 228
 229    void *winsys_drawable_handle;
 230
 231    /* The number of vertex buffers from the last call of validate_arrays. */
 232    unsigned last_num_vbuffers;
 233
 234    int32_t draw_stamp;
 235    int32_t read_stamp;
 236
 237    struct st_config_options options;
 238
 239    struct st_perf_monitor_group *perfmon;
 240 };
 241
 242
 243 /* Need this so that we can implement Mesa callbacks in this module.
 244  */
 245 static inline struct st_context *st_context(struct gl_context *ctx)
 246 {
 247    return ctx->st;
 248 }
 249
 250
 251 /**
 252  * Wrapper for struct gl_framebuffer.
 253  * This is an opaque type to the outside world.
 254  */
 255 struct st_framebuffer
 256 {
 257    struct gl_framebuffer Base;
 258    void *Private;
 259
 260    struct st_framebuffer_iface *iface;
 261    enum st_attachment_type statts[ST_ATTACHMENT_COUNT];
 262    unsigned num_statts;
 263    int32_t stamp;
 264    int32_t iface_stamp;
 265 };
 266
 267
 268 extern void st_init_driver_functions(struct pipe_screen *screen,
 269                                      struct dd_function_table *functions);
 270
 271 void st_invalidate_state(struct gl_context * ctx, GLbitfield new_state);
 272
 273
 274
 275 #define Y_0_TOP 1
 276 #define Y_0_BOTTOM 2
 277
 278 static inline GLuint
 279 st_fb_orientation(const struct gl_framebuffer *fb)
 280 {
 281    if (fb && _mesa_is_winsys_fbo(fb)) {
 282       /* Drawing into a window (on-screen buffer).
 283        *
 284        * Negate Y scale to flip image vertically.
 285        * The NDC Y coords prior to viewport transformation are in the range
 286        * [y=-1=bottom, y=1=top]
 287        * Hardware window coords are in the range [y=0=top, y=H-1=bottom] where
 288        * H is the window height.
 289        * Use the viewport transformation to invert Y.
 290        */
 291       return Y_0_TOP;
 292    }
 293    else {
 294       /* Drawing into user-created FBO (very likely a texture).
 295        *
 296        * For textures, T=0=Bottom, so by extension Y=0=Bottom for rendering.
 297        */
 298       return Y_0_BOTTOM;
 299    }
 300 }
 301
 302
 303 static inline unsigned
 304 st_shader_stage_to_ptarget(gl_shader_stage stage)
 305 {
 306    switch (stage) {
 307    case MESA_SHADER_VERTEX:
 308       return PIPE_SHADER_VERTEX;
 309    case MESA_SHADER_FRAGMENT:
 310       return PIPE_SHADER_FRAGMENT;
 311    case MESA_SHADER_GEOMETRY:
 312       return PIPE_SHADER_GEOMETRY;
 313    case MESA_SHADER_TESS_CTRL:
 314       return PIPE_SHADER_TESS_CTRL;
 315    case MESA_SHADER_TESS_EVAL:
 316       return PIPE_SHADER_TESS_EVAL;
 317    case MESA_SHADER_COMPUTE:
 318       return PIPE_SHADER_COMPUTE;
 319    }
 320
 321    assert(!"should not be reached");
 322    return PIPE_SHADER_VERTEX;
 323 }
 324
 325
 326 /** clear-alloc a struct-sized object, with casting */
 327 #define ST_CALLOC_STRUCT(T)   (struct T *) calloc(1, sizeof(struct T))
 328
 329
 330 extern struct st_context *
 331 st_create_context(gl_api api, struct pipe_context *pipe,
 332                   const struct gl_config *visual,
 333                   struct st_context *share,
 334                   const struct st_config_options *options);
 335
 336 extern void
 337 st_destroy_context(struct st_context *st);
 338
 339
 340 #ifdef __cplusplus
 341 }
 342 #endif
 343
 344 #endif