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 u_upload_mgr;
  50
  51
  52 #define ST_NEW_MESA                    (1 << 0) /* Mesa state has changed */
  53 #define ST_NEW_FRAGMENT_PROGRAM        (1 << 1)
  54 #define ST_NEW_VERTEX_PROGRAM          (1 << 2)
  55 #define ST_NEW_FRAMEBUFFER             (1 << 3)
  56 #define ST_NEW_TESS_STATE              (1 << 4)
  57 #define ST_NEW_GEOMETRY_PROGRAM        (1 << 5)
  58 #define ST_NEW_VERTEX_ARRAYS           (1 << 6)
  59 #define ST_NEW_RASTERIZER              (1 << 7)
  60 #define ST_NEW_UNIFORM_BUFFER          (1 << 8)
  61 #define ST_NEW_TESSCTRL_PROGRAM        (1 << 9)
  62 #define ST_NEW_TESSEVAL_PROGRAM        (1 << 10)
  63 #define ST_NEW_SAMPLER_VIEWS           (1 << 11)
  64
  65
  66 struct st_state_flags {
  67    GLuint mesa;
  68    uint64_t st;
  69 };
  70
  71 struct st_tracked_state {
  72    const char *name;
  73    struct st_state_flags dirty;
  74    void (*update)( struct st_context *st );
  75 };
  76
  77
  78
  79 struct st_context
  80 {
  81    struct st_context_iface iface;
  82
  83    struct gl_context *ctx;
  84
  85    struct pipe_context *pipe;
  86
  87    struct u_upload_mgr *uploader, *indexbuf_uploader, *constbuf_uploader;
  88
  89    struct draw_context *draw;  /**< For selection/feedback/rastpos only */
  90    struct draw_stage *feedback_stage;  /**< For GL_FEEDBACK rendermode */
  91    struct draw_stage *selection_stage;  /**< For GL_SELECT rendermode */
  92    struct draw_stage *rastpos_stage;  /**< For glRasterPos */
  93    GLboolean clamp_frag_color_in_shader;
  94    GLboolean clamp_vert_color_in_shader;
  95    boolean has_stencil_export; /**< can do shader stencil export? */
  96    boolean has_time_elapsed;
  97    boolean has_shader_model3;
  98    boolean has_etc1;
  99    boolean has_etc2;
 100    boolean prefer_blit_based_texture_transfer;
 101
 102    boolean needs_texcoord_semantic;
 103    boolean apply_texture_swizzle_to_border_color;
 104
 105    /* On old libGL's for linux we need to invalidate the drawables
 106     * on glViewpport calls, this is set via a option.
 107     */
 108    boolean invalidate_on_gl_viewport;
 109
 110    boolean vertex_array_out_of_memory;
 111
 112    /* Some state is contained in constant objects.
 113     * Other state is just parameter values.
 114     */
 115    struct {
 116       struct pipe_blend_state               blend;
 117       struct pipe_depth_stencil_alpha_state depth_stencil;
 118       struct pipe_rasterizer_state          rasterizer;
 119       struct pipe_sampler_state samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 120       GLuint num_samplers[PIPE_SHADER_TYPES];
 121       struct pipe_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS];
 122       GLuint num_sampler_views[PIPE_SHADER_TYPES];
 123       struct pipe_clip_state clip;
 124       struct {
 125          void *ptr;
 126          unsigned size;
 127       } constants[PIPE_SHADER_TYPES];
 128       struct pipe_framebuffer_state framebuffer;
 129       struct pipe_scissor_state scissor[PIPE_MAX_VIEWPORTS];
 130       struct pipe_viewport_state viewport[PIPE_MAX_VIEWPORTS];
 131       unsigned sample_mask;
 132
 133       GLuint poly_stipple[32];  /**< In OpenGL's bottom-to-top order */
 134
 135       GLuint fb_orientation;
 136    } state;
 137
 138    char vendor[100];
 139    char renderer[100];
 140
 141    struct st_state_flags dirty;
 142
 143    GLboolean vertdata_edgeflags;
 144    GLboolean edgeflag_culls_prims;
 145
 146    /** Mapping from VARYING_SLOT_x to post-transformed vertex slot */
 147    const GLuint *vertex_result_to_slot;
 148
 149    struct st_vertex_program *vp;    /**< Currently bound vertex program */
 150    struct st_fragment_program *fp;  /**< Currently bound fragment program */
 151    struct st_geometry_program *gp;  /**< Currently bound geometry program */
 152    struct st_tessctrl_program *tcp; /**< Currently bound tess control program */
 153    struct st_tesseval_program *tep; /**< Currently bound tess eval program */
 154
 155    struct st_vp_variant *vp_variant;
 156    struct st_fp_variant *fp_variant;
 157    struct st_gp_variant *gp_variant;
 158    struct st_tcp_variant *tcp_variant;
 159    struct st_tep_variant *tep_variant;
 160
 161    struct gl_texture_object *default_texture;
 162
 163    struct {
 164       struct gl_program_cache *cache;
 165       struct st_fragment_program *program;  /**< cur pixel transfer prog */
 166       GLuint xfer_prog_sn;  /**< pixel xfer program serial no. */
 167       GLuint user_prog_sn;  /**< user fragment program serial no. */
 168       struct st_fragment_program *combined_prog;
 169       GLuint combined_prog_sn;
 170       struct pipe_resource *pixelmap_texture;
 171       struct pipe_sampler_view *pixelmap_sampler_view;
 172       boolean pixelmap_enabled;  /**< use the pixelmap texture? */
 173    } pixel_xfer;
 174
 175    /** for glBitmap */
 176    struct {
 177       struct pipe_rasterizer_state rasterizer;
 178       struct pipe_sampler_state samplers[2];
 179       enum pipe_format tex_format;
 180       void *vs;
 181       struct bitmap_cache *cache;
 182    } bitmap;
 183
 184    /** for glDraw/CopyPixels */
 185    struct {
 186       struct gl_fragment_program *shaders[4];
 187       void *vert_shaders[2];   /**< ureg shaders */
 188    } drawpix;
 189
 190    /** for glClear */
 191    struct {
 192       struct pipe_rasterizer_state raster;
 193       struct pipe_viewport_state viewport;
 194       void *vs;
 195       void *fs;
 196       void *vs_layered;
 197       void *gs_layered;
 198    } clear;
 199
 200    /** used for anything using util_draw_vertex_buffer */
 201    struct pipe_vertex_element velems_util_draw[3];
 202
 203    void *passthrough_fs;  /**< simple pass-through frag shader */
 204
 205    enum pipe_texture_target internal_target;
 206
 207    struct cso_context *cso_context;
 208
 209    void *winsys_drawable_handle;
 210
 211    /* The number of vertex buffers from the last call of validate_arrays. */
 212    unsigned last_num_vbuffers;
 213
 214    int32_t draw_stamp;
 215    int32_t read_stamp;
 216
 217    struct st_config_options options;
 218 };
 219
 220
 221 /* Need this so that we can implement Mesa callbacks in this module.
 222  */
 223 static inline struct st_context *st_context(struct gl_context *ctx)
 224 {
 225    return ctx->st;
 226 }
 227
 228
 229 /**
 230  * Wrapper for struct gl_framebuffer.
 231  * This is an opaque type to the outside world.
 232  */
 233 struct st_framebuffer
 234 {
 235    struct gl_framebuffer Base;
 236    void *Private;
 237
 238    struct st_framebuffer_iface *iface;
 239    enum st_attachment_type statts[ST_ATTACHMENT_COUNT];
 240    unsigned num_statts;
 241    int32_t stamp;
 242    int32_t iface_stamp;
 243 };
 244
 245
 246 extern void st_init_driver_functions(struct pipe_screen *screen,
 247                                      struct dd_function_table *functions);
 248
 249 void st_invalidate_state(struct gl_context * ctx, GLuint new_state);
 250
 251
 252
 253 #define Y_0_TOP 1
 254 #define Y_0_BOTTOM 2
 255
 256 static inline GLuint
 257 st_fb_orientation(const struct gl_framebuffer *fb)
 258 {
 259    if (fb && _mesa_is_winsys_fbo(fb)) {
 260       /* Drawing into a window (on-screen buffer).
 261        *
 262        * Negate Y scale to flip image vertically.
 263        * The NDC Y coords prior to viewport transformation are in the range
 264        * [y=-1=bottom, y=1=top]
 265        * Hardware window coords are in the range [y=0=top, y=H-1=bottom] where
 266        * H is the window height.
 267        * Use the viewport transformation to invert Y.
 268        */
 269       return Y_0_TOP;
 270    }
 271    else {
 272       /* Drawing into user-created FBO (very likely a texture).
 273        *
 274        * For textures, T=0=Bottom, so by extension Y=0=Bottom for rendering.
 275        */
 276       return Y_0_BOTTOM;
 277    }
 278 }
 279
 280
 281 static inline unsigned
 282 st_shader_stage_to_ptarget(gl_shader_stage stage)
 283 {
 284    switch (stage) {
 285    case MESA_SHADER_VERTEX:
 286       return PIPE_SHADER_VERTEX;
 287    case MESA_SHADER_FRAGMENT:
 288       return PIPE_SHADER_FRAGMENT;
 289    case MESA_SHADER_GEOMETRY:
 290       return PIPE_SHADER_GEOMETRY;
 291    case MESA_SHADER_TESS_CTRL:
 292       return PIPE_SHADER_TESS_CTRL;
 293    case MESA_SHADER_TESS_EVAL:
 294       return PIPE_SHADER_TESS_EVAL;
 295    case MESA_SHADER_COMPUTE:
 296       return PIPE_SHADER_COMPUTE;
 297    }
 298
 299    assert(!"should not be reached");
 300    return PIPE_SHADER_VERTEX;
 301 }
 302
 303
 304 /** clear-alloc a struct-sized object, with casting */
 305 #define ST_CALLOC_STRUCT(T)   (struct T *) calloc(1, sizeof(struct T))
 306
 307
 308 extern struct st_context *
 309 st_create_context(gl_api api, struct pipe_context *pipe,
 310                   const struct gl_config *visual,
 311                   struct st_context *share,
 312                   const struct st_config_options *options);
 313
 314 extern void
 315 st_destroy_context(struct st_context *st);
 316
 317
 318 #ifdef __cplusplus
 319 }
 320 #endif
 321
 322 #endif