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