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
  66
  67 struct st_state_flags {
  68    GLuint mesa;
  69    uint64_t st;
  70 };
  71
  72 struct st_tracked_state {
  73    const char *name;
  74    struct st_state_flags dirty;
  75    void (*update)( struct st_context *st );
  76 };
  77
  78
  79
  80 struct st_context
  81 {
  82    struct st_context_iface iface;
  83
  84    struct gl_context *ctx;
  85
  86    struct pipe_context *pipe;
  87
  88    struct u_upload_mgr *uploader, *indexbuf_uploader, *constbuf_uploader;
  89
  90    struct draw_context *draw;  /**< For selection/feedback/rastpos only */
  91    struct draw_stage *feedback_stage;  /**< For GL_FEEDBACK rendermode */
  92    struct draw_stage *selection_stage;  /**< For GL_SELECT rendermode */
  93    struct draw_stage *rastpos_stage;  /**< For glRasterPos */
  94    GLboolean clamp_frag_color_in_shader;
  95    GLboolean clamp_vert_color_in_shader;
  96    boolean has_stencil_export; /**< can do shader stencil export? */
  97    boolean has_time_elapsed;
  98    boolean has_shader_model3;
  99    boolean has_etc1;
 100    boolean has_etc2;
 101    boolean prefer_blit_based_texture_transfer;
 102    boolean force_persample_in_shader;
 103    boolean has_shareable_shaders;
 104    boolean has_half_float_packing;
 105
 106    /**
 107     * If a shader can be created when we get its source.
 108     * This means it has only 1 variant, not counting glBitmap and
 109     * glDrawPixels.
 110     */
 111    boolean shader_has_one_variant[MESA_SHADER_STAGES];
 112
 113    boolean needs_texcoord_semantic;
 114    boolean apply_texture_swizzle_to_border_color;
 115
 116    /* On old libGL's for linux we need to invalidate the drawables
 117     * on glViewpport calls, this is set via a option.
 118     */
 119    boolean invalidate_on_gl_viewport;
 120
 121    boolean vertex_array_out_of_memory;
 122
 123    /* Some state is contained in constant objects.
 124     * Other state is just parameter values.
 125     */
 126    struct {
 127       struct pipe_blend_state               blend;
 128       struct pipe_depth_stencil_alpha_state depth_stencil;
 129       struct pipe_rasterizer_state          rasterizer;
 130       struct pipe_sampler_state samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 131       GLuint num_samplers[PIPE_SHADER_TYPES];
 132       struct pipe_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 133       GLuint num_sampler_views[PIPE_SHADER_TYPES];
 134       struct pipe_clip_state clip;
 135       struct {
 136          void *ptr;
 137          unsigned size;
 138       } constants[PIPE_SHADER_TYPES];
 139       struct pipe_framebuffer_state framebuffer;
 140       struct pipe_scissor_state scissor[PIPE_MAX_VIEWPORTS];
 141       struct pipe_viewport_state viewport[PIPE_MAX_VIEWPORTS];
 142       unsigned sample_mask;
 143
 144       GLuint poly_stipple[32];  /**< In OpenGL's bottom-to-top order */
 145
 146       GLuint fb_orientation;
 147    } state;
 148
 149    char vendor[100];
 150    char renderer[100];
 151
 152    struct st_state_flags dirty;
 153
 154    GLboolean vertdata_edgeflags;
 155    GLboolean edgeflag_culls_prims;
 156
 157    /** Mapping from VARYING_SLOT_x to post-transformed vertex slot */
 158    const GLuint *vertex_result_to_slot;
 159
 160    struct st_vertex_program *vp;    /**< Currently bound vertex program */
 161    struct st_fragment_program *fp;  /**< Currently bound fragment program */
 162    struct st_geometry_program *gp;  /**< Currently bound geometry program */
 163    struct st_tessctrl_program *tcp; /**< Currently bound tess control program */
 164    struct st_tesseval_program *tep; /**< Currently bound tess eval program */
 165
 166    struct st_vp_variant *vp_variant;
 167    struct st_fp_variant *fp_variant;
 168    struct st_gp_variant *gp_variant;
 169    struct st_tcp_variant *tcp_variant;
 170    struct st_tep_variant *tep_variant;
 171
 172    struct gl_texture_object *default_texture;
 173
 174    struct {
 175       struct pipe_resource *pixelmap_texture;
 176       struct pipe_sampler_view *pixelmap_sampler_view;
 177    } pixel_xfer;
 178
 179    /** for glBitmap */
 180    struct {
 181       struct pipe_rasterizer_state rasterizer;
 182       struct pipe_sampler_state samplers[2];
 183       enum pipe_format tex_format;
 184       void *vs;
 185       struct bitmap_cache *cache;
 186    } bitmap;
 187
 188    /** for glDraw/CopyPixels */
 189    struct {
 190       void *zs_shaders[4];
 191       void *vert_shaders[2];   /**< ureg shaders */
 192    } drawpix;
 193
 194    /** for glClear */
 195    struct {
 196       struct pipe_rasterizer_state raster;
 197       struct pipe_viewport_state viewport;
 198       void *vs;
 199       void *fs;
 200       void *vs_layered;
 201       void *gs_layered;
 202    } clear;
 203
 204    /** used for anything using util_draw_vertex_buffer */
 205    struct pipe_vertex_element velems_util_draw[3];
 206
 207    void *passthrough_fs;  /**< simple pass-through frag shader */
 208
 209    enum pipe_texture_target internal_target;
 210
 211    struct cso_context *cso_context;
 212
 213    void *winsys_drawable_handle;
 214
 215    /* The number of vertex buffers from the last call of validate_arrays. */
 216    unsigned last_num_vbuffers;
 217
 218    int32_t draw_stamp;
 219    int32_t read_stamp;
 220
 221    struct st_config_options options;
 222
 223    struct st_perf_monitor_group *perfmon;
 224 };
 225
 226
 227 /* Need this so that we can implement Mesa callbacks in this module.
 228  */
 229 static inline struct st_context *st_context(struct gl_context *ctx)
 230 {
 231    return ctx->st;
 232 }
 233
 234
 235 /**
 236  * Wrapper for struct gl_framebuffer.
 237  * This is an opaque type to the outside world.
 238  */
 239 struct st_framebuffer
 240 {
 241    struct gl_framebuffer Base;
 242    void *Private;
 243
 244    struct st_framebuffer_iface *iface;
 245    enum st_attachment_type statts[ST_ATTACHMENT_COUNT];
 246    unsigned num_statts;
 247    int32_t stamp;
 248    int32_t iface_stamp;
 249 };
 250
 251
 252 extern void st_init_driver_functions(struct pipe_screen *screen,
 253                                      struct dd_function_table *functions);
 254
 255 void st_invalidate_state(struct gl_context * ctx, GLuint new_state);
 256
 257
 258
 259 #define Y_0_TOP 1
 260 #define Y_0_BOTTOM 2
 261
 262 static inline GLuint
 263 st_fb_orientation(const struct gl_framebuffer *fb)
 264 {
 265    if (fb && _mesa_is_winsys_fbo(fb)) {
 266       /* Drawing into a window (on-screen buffer).
 267        *
 268        * Negate Y scale to flip image vertically.
 269        * The NDC Y coords prior to viewport transformation are in the range
 270        * [y=-1=bottom, y=1=top]
 271        * Hardware window coords are in the range [y=0=top, y=H-1=bottom] where
 272        * H is the window height.
 273        * Use the viewport transformation to invert Y.
 274        */
 275       return Y_0_TOP;
 276    }
 277    else {
 278       /* Drawing into user-created FBO (very likely a texture).
 279        *
 280        * For textures, T=0=Bottom, so by extension Y=0=Bottom for rendering.
 281        */
 282       return Y_0_BOTTOM;
 283    }
 284 }
 285
 286
 287 static inline unsigned
 288 st_shader_stage_to_ptarget(gl_shader_stage stage)
 289 {
 290    switch (stage) {
 291    case MESA_SHADER_VERTEX:
 292       return PIPE_SHADER_VERTEX;
 293    case MESA_SHADER_FRAGMENT:
 294       return PIPE_SHADER_FRAGMENT;
 295    case MESA_SHADER_GEOMETRY:
 296       return PIPE_SHADER_GEOMETRY;
 297    case MESA_SHADER_TESS_CTRL:
 298       return PIPE_SHADER_TESS_CTRL;
 299    case MESA_SHADER_TESS_EVAL:
 300       return PIPE_SHADER_TESS_EVAL;
 301    case MESA_SHADER_COMPUTE:
 302       return PIPE_SHADER_COMPUTE;
 303    }
 304
 305    assert(!"should not be reached");
 306    return PIPE_SHADER_VERTEX;
 307 }
 308
 309
 310 /** clear-alloc a struct-sized object, with casting */
 311 #define ST_CALLOC_STRUCT(T)   (struct T *) calloc(1, sizeof(struct T))
 312
 313
 314 extern struct st_context *
 315 st_create_context(gl_api api, struct pipe_context *pipe,
 316                   const struct gl_config *visual,
 317                   struct st_context *share,
 318                   const struct st_config_options *options);
 319
 320 extern void
 321 st_destroy_context(struct st_context *st);
 322
 323
 324 #ifdef __cplusplus
 325 }
 326 #endif
 327
 328 #endif