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 "state_tracker/st_api.h" 33 #include "main/fbobject.h" 34 #include "state_tracker/st_atom.h" 35 #include "util/u_inlines.h" 36 #include "util/list.h" 37 38 39 #ifdef __cplusplus 40 extern "C" { 41 #endif 42 43 44 struct dd_function_table; 45 struct draw_context; 46 struct draw_stage; 47 struct gen_mipmap_state; 48 struct st_context; 49 struct st_fragment_program; 50 struct st_perf_monitor_group; 51 struct u_upload_mgr; 52 53 54 /** For drawing quads for glClear, glDraw/CopyPixels, glBitmap, etc. */ 55 struct st_util_vertex 56 { 57 float x, y, z; 58 float r, g, b, a; 59 float s, t; 60 }; 61 62 struct st_bitmap_cache 63 { 64 /** Window pos to render the cached image */ 65 GLint xpos, ypos; 66 /** Bounds of region used in window coords */ 67 GLint xmin, ymin, xmax, ymax; 68 69 GLfloat color[4]; 70 71 /** Bitmap's Z position */ 72 GLfloat zpos; 73 74 struct pipe_resource *texture; 75 struct pipe_transfer *trans; 76 77 GLboolean empty; 78 79 /** An I8 texture image: */ 80 ubyte *buffer; 81 }; 82 83 struct st_bound_handles 84 { 85 unsigned num_handles; 86 uint64_t *handles; 87 }; 88 89 struct st_context 90 { 91 struct st_context_iface iface; 92 93 struct gl_context *ctx; 94 95 struct pipe_context *pipe; 96 97 struct draw_context *draw; /**< For selection/feedback/rastpos only */ 98 struct draw_stage *feedback_stage; /**< For GL_FEEDBACK rendermode */ 99 struct draw_stage *selection_stage; /**< For GL_SELECT rendermode */ 100 struct draw_stage *rastpos_stage; /**< For glRasterPos */ 101 GLboolean clamp_frag_color_in_shader; 102 GLboolean clamp_vert_color_in_shader; 103 boolean has_stencil_export; /**< can do shader stencil export? */ 104 boolean has_time_elapsed; 105 boolean has_shader_model3; 106 boolean has_etc1; 107 boolean has_etc2; 108 boolean prefer_blit_based_texture_transfer; 109 boolean force_persample_in_shader; 110 boolean has_shareable_shaders; 111 boolean has_half_float_packing; 112 boolean has_multi_draw_indirect; 113 boolean can_bind_const_buffer_as_vertex; 114 115 /** 116 * If a shader can be created when we get its source. 117 * This means it has only 1 variant, not counting glBitmap and 118 * glDrawPixels. 119 */ 120 boolean shader_has_one_variant[MESA_SHADER_STAGES]; 121 122 boolean needs_texcoord_semantic; 123 boolean apply_texture_swizzle_to_border_color; 124 125 /* On old libGL's for linux we need to invalidate the drawables 126 * on glViewpport calls, this is set via a option. 127 */ 128 boolean invalidate_on_gl_viewport; 129 boolean draw_needs_minmax_index; 130 boolean vertex_array_out_of_memory; 131 boolean has_hw_atomics; 132 133 /* Some state is contained in constant objects. 134 * Other state is just parameter values. 135 */ 136 struct { 137 struct pipe_blend_state blend; 138 struct pipe_depth_stencil_alpha_state depth_stencil; 139 struct pipe_rasterizer_state rasterizer; 140 struct pipe_sampler_state samplers[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS]; 141 GLuint num_samplers[PIPE_SHADER_TYPES]; 142 struct pipe_sampler_view *sampler_views[PIPE_SHADER_TYPES][PIPE_MAX_SAMPLERS]; 143 GLuint num_sampler_views[PIPE_SHADER_TYPES]; 144 struct pipe_clip_state clip; 145 struct { 146 void *ptr; 147 unsigned size; 148 } constants[PIPE_SHADER_TYPES]; 149 unsigned fb_width; 150 unsigned fb_height; 151 unsigned fb_num_samples; 152 unsigned fb_num_layers; 153 unsigned num_viewports; 154 struct pipe_scissor_state scissor[PIPE_MAX_VIEWPORTS]; 155 struct pipe_viewport_state viewport[PIPE_MAX_VIEWPORTS]; 156 struct { 157 unsigned num; 158 boolean include; 159 struct pipe_scissor_state rects[PIPE_MAX_WINDOW_RECTANGLES]; 160 } window_rects; 161 162 GLuint poly_stipple[32]; /**< In OpenGL's bottom-to-top order */ 163 164 GLuint fb_orientation; 165 } state; 166 167 uint64_t dirty; /**< dirty states */ 168 169 /** This masks out unused shader resources. Only valid in draw calls. */ 170 uint64_t active_states; 171 172 /* If true, further analysis of states is required to know if something 173 * has changed. Used mainly for shaders. 174 */ 175 bool gfx_shaders_may_be_dirty; 176 bool compute_shader_may_be_dirty; 177 178 GLboolean vertdata_edgeflags; 179 GLboolean edgeflag_culls_prims; 180 181 struct st_vertex_program *vp; /**< Currently bound vertex program */ 182 struct st_fragment_program *fp; /**< Currently bound fragment program */ 183 struct st_common_program *gp; /**< Currently bound geometry program */ 184 struct st_common_program *tcp; /**< Currently bound tess control program */ 185 struct st_common_program *tep; /**< Currently bound tess eval program */ 186 struct st_compute_program *cp; /**< Currently bound compute program */ 187 188 struct st_vp_variant *vp_variant; 189 190 struct { 191 struct pipe_resource *pixelmap_texture; 192 struct pipe_sampler_view *pixelmap_sampler_view; 193 } pixel_xfer; 194 195 /** for glBitmap */ 196 struct { 197 struct pipe_rasterizer_state rasterizer; 198 struct pipe_sampler_state sampler; 199 struct pipe_sampler_state atlas_sampler; 200 enum pipe_format tex_format; 201 void *vs; 202 struct st_bitmap_cache cache; 203 } bitmap; 204 205 /** for glDraw/CopyPixels */ 206 struct { 207 void *zs_shaders[4]; 208 void *vert_shaders[2]; /**< ureg shaders */ 209 } drawpix; 210 211 struct { 212 GLsizei width, height; 213 GLenum format, type; 214 const void *user_pointer; /**< Last user 'pixels' pointer */ 215 void *image; /**< Copy of the glDrawPixels image data */ 216 struct pipe_resource *texture; 217 } drawpix_cache; 218 219 /** for glReadPixels */ 220 struct { 221 struct pipe_resource *src; 222 struct pipe_resource *cache; 223 enum pipe_format dst_format; 224 unsigned level; 225 unsigned layer; 226 unsigned hits; 227 } readpix_cache; 228 229 /** for glClear */ 230 struct { 231 struct pipe_rasterizer_state raster; 232 struct pipe_viewport_state viewport; 233 void *vs; 234 void *fs; 235 void *vs_layered; 236 void *gs_layered; 237 } clear; 238 239 /* For gl(Compressed)Tex(Sub)Image */ 240 struct { 241 struct pipe_rasterizer_state raster; 242 struct pipe_blend_state upload_blend; 243 void *vs; 244 void *gs; 245 void *upload_fs[3]; 246 void *download_fs[3][PIPE_MAX_TEXTURE_TYPES]; 247 bool upload_enabled; 248 bool download_enabled; 249 bool rgba_only; 250 bool layers; 251 bool use_gs; 252 } pbo; 253 254 /** for drawing with st_util_vertex */ 255 struct pipe_vertex_element util_velems[3]; 256 257 void *passthrough_fs; /**< simple pass-through frag shader */ 258 259 enum pipe_texture_target internal_target; 260 261 struct cso_context *cso_context; 262 263 void *winsys_drawable_handle; 264 265 /* The number of vertex buffers from the last call of validate_arrays. */ 266 unsigned last_num_vbuffers; 267 268 int32_t draw_stamp; 269 int32_t read_stamp; 270 271 struct st_config_options options; 272 273 struct st_perf_monitor_group *perfmon; 274 275 enum pipe_reset_status reset_status; 276 277 /* Array of bound texture/image handles which are resident in the context. 278 */ 279 struct st_bound_handles bound_texture_handles[PIPE_SHADER_TYPES]; 280 struct st_bound_handles bound_image_handles[PIPE_SHADER_TYPES]; 281 282 /* Winsys buffers */ 283 struct list_head winsys_buffers; 284 }; 285 286 287 /* Need this so that we can implement Mesa callbacks in this module. 288 */ 289 static inline struct st_context *st_context(struct gl_context *ctx) 290 { 291 return ctx->st; 292 } 293 294 295 /** 296 * Wrapper for struct gl_framebuffer. 297 * This is an opaque type to the outside world. 298 */ 299 struct st_framebuffer 300 { 301 struct gl_framebuffer Base; 302 303 struct st_framebuffer_iface *iface; 304 enum st_attachment_type statts[ST_ATTACHMENT_COUNT]; 305 unsigned num_statts; 306 int32_t stamp; 307 int32_t iface_stamp; 308 uint32_t iface_ID; 309 310 /* list of framebuffer objects */ 311 struct list_head head; 312 }; 313 314 315 extern void st_init_driver_functions(struct pipe_screen *screen, 316 struct dd_function_table *functions); 317 318 void 319 st_invalidate_buffers(struct st_context *st); 320 321 /* Invalidate the readpixels cache to ensure we don't read stale data. 322 */ 323 static inline void 324 st_invalidate_readpix_cache(struct st_context *st) 325 { 326 if (unlikely(st->readpix_cache.src)) { 327 pipe_resource_reference(&st->readpix_cache.src, NULL); 328 pipe_resource_reference(&st->readpix_cache.cache, NULL); 329 } 330 } 331 332 333 #define Y_0_TOP 1 334 #define Y_0_BOTTOM 2 335 336 static inline GLuint 337 st_fb_orientation(const struct gl_framebuffer *fb) 338 { 339 if (fb && _mesa_is_winsys_fbo(fb)) { 340 /* Drawing into a window (on-screen buffer). 341 * 342 * Negate Y scale to flip image vertically. 343 * The NDC Y coords prior to viewport transformation are in the range 344 * [y=-1=bottom, y=1=top] 345 * Hardware window coords are in the range [y=0=top, y=H-1=bottom] where 346 * H is the window height. 347 * Use the viewport transformation to invert Y. 348 */ 349 return Y_0_TOP; 350 } 351 else { 352 /* Drawing into user-created FBO (very likely a texture). 353 * 354 * For textures, T=0=Bottom, so by extension Y=0=Bottom for rendering. 355 */ 356 return Y_0_BOTTOM; 357 } 358 } 359 360 361 static inline bool 362 st_user_clip_planes_enabled(struct gl_context *ctx) 363 { 364 return (ctx->API == API_OPENGL_COMPAT || 365 ctx->API == API_OPENGLES) && /* only ES 1.x */ 366 ctx->Transform.ClipPlanesEnabled; 367 } 368 369 /** clear-alloc a struct-sized object, with casting */ 370 #define ST_CALLOC_STRUCT(T) (struct T *) calloc(1, sizeof(struct T)) 371 372 373 extern struct st_context * 374 st_create_context(gl_api api, struct pipe_context *pipe, 375 const struct gl_config *visual, 376 struct st_context *share, 377 const struct st_config_options *options, 378 bool no_error); 379 380 extern void 381 st_destroy_context(struct st_context *st); 382 383 uint64_t 384 st_get_active_states(struct gl_context *ctx); 385 386 387 #ifdef __cplusplus 388 } 389 #endif 390 391 #endif 392
