drisw.c revision 2e4ad14a525f4028f0e0a93de2f8db785df33fb7
1/************************************************************************** 2 * 3 * Copyright 2009, VMware, Inc. 4 * All Rights Reserved. 5 * Copyright 2010 George Sapountzis <gsapountzis@gmail.com> 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the 9 * "Software"), to deal in the Software without restriction, including 10 * without limitation the rights to use, copy, modify, merge, publish, 11 * distribute, sub license, and/or sell copies of the Software, and to 12 * permit persons to whom the Software is furnished to do so, subject to 13 * the following conditions: 14 * 15 * The above copyright notice and this permission notice (including the 16 * next paragraph) shall be included in all copies or substantial portions 17 * of the Software. 18 * 19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 22 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR 23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 26 * 27 **************************************************************************/ 28 29/* TODO: 30 * 31 * xshm / texture_from_pixmap / EGLImage: 32 * 33 * Allow the loaders to use the XSHM extension. It probably requires callbacks 34 * for createImage/destroyImage similar to DRI2 getBuffers. 35 */ 36 37#include "util/u_format.h" 38#include "util/u_memory.h" 39#include "util/u_inlines.h" 40#include "pipe/p_context.h" 41#include "state_tracker/drisw_api.h" 42 43#include "dri_screen.h" 44#include "dri_context.h" 45#include "dri_drawable.h" 46#include "dri1_helper.h" 47 48DEBUG_GET_ONCE_BOOL_OPTION(swrast_no_present, "SWRAST_NO_PRESENT", FALSE); 49static boolean swrast_no_present = FALSE; 50 51static INLINE void 52get_drawable_info(__DRIdrawable *dPriv, int *w, int *h) 53{ 54 __DRIscreen *sPriv = dPriv->driScreenPriv; 55 const __DRIswrastLoaderExtension *loader = sPriv->swrast_loader; 56 int x, y; 57 58 loader->getDrawableInfo(dPriv, 59 &x, &y, w, h, 60 dPriv->loaderPrivate); 61} 62 63static INLINE void 64put_image(__DRIdrawable *dPriv, void *data, unsigned width, unsigned height) 65{ 66 __DRIscreen *sPriv = dPriv->driScreenPriv; 67 const __DRIswrastLoaderExtension *loader = sPriv->swrast_loader; 68 69 loader->putImage(dPriv, __DRI_SWRAST_IMAGE_OP_SWAP, 70 0, 0, width, height, 71 data, dPriv->loaderPrivate); 72} 73 74static void 75drisw_update_drawable_info(struct dri_drawable *drawable) 76{ 77 __DRIdrawable *dPriv = drawable->dPriv; 78 79 get_drawable_info(dPriv, &dPriv->w, &dPriv->h); 80} 81 82static void 83drisw_put_image(struct dri_drawable *drawable, 84 void *data, unsigned width, unsigned height) 85{ 86 __DRIdrawable *dPriv = drawable->dPriv; 87 88 put_image(dPriv, data, width, height); 89} 90 91static INLINE void 92drisw_present_texture(__DRIdrawable *dPriv, 93 struct pipe_resource *ptex) 94{ 95 struct dri_drawable *drawable = dri_drawable(dPriv); 96 struct dri_screen *screen = dri_screen(drawable->sPriv); 97 struct pipe_surface *psurf; 98 99 if (swrast_no_present) 100 return; 101 102 psurf = dri1_get_pipe_surface(drawable, ptex); 103 if (!psurf) 104 return; 105 106 screen->base.screen->flush_frontbuffer(screen->base.screen, psurf, drawable); 107} 108 109static INLINE void 110drisw_invalidate_drawable(__DRIdrawable *dPriv) 111{ 112 struct dri_context *ctx = dri_get_current(dPriv->driScreenPriv); 113 struct dri_drawable *drawable = dri_drawable(dPriv); 114 115 drawable->texture_stamp = dPriv->lastStamp - 1; 116 117 /* check if swapping currently bound buffer */ 118 if (ctx && ctx->dPriv == dPriv) 119 ctx->st->notify_invalid_framebuffer(ctx->st, &drawable->base); 120} 121 122static INLINE void 123drisw_copy_to_front(__DRIdrawable * dPriv, 124 struct pipe_resource *ptex) 125{ 126 drisw_present_texture(dPriv, ptex); 127 128 drisw_invalidate_drawable(dPriv); 129} 130 131/* 132 * Backend functions for st_framebuffer interface and swap_buffers. 133 */ 134 135static void 136drisw_swap_buffers(__DRIdrawable *dPriv) 137{ 138 struct dri_context *ctx = dri_get_current(dPriv->driScreenPriv); 139 struct dri_drawable *drawable = dri_drawable(dPriv); 140 struct pipe_resource *ptex; 141 142 if (!ctx) 143 return; 144 145 ptex = drawable->textures[ST_ATTACHMENT_BACK_LEFT]; 146 147 if (ptex) { 148 ctx->st->flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL); 149 150 drisw_copy_to_front(dPriv, ptex); 151 } 152} 153 154static void 155drisw_flush_frontbuffer(struct dri_drawable *drawable, 156 enum st_attachment_type statt) 157{ 158 struct dri_context *ctx = dri_get_current(drawable->sPriv); 159 struct pipe_resource *ptex; 160 161 if (!ctx) 162 return; 163 164 ptex = drawable->textures[statt]; 165 166 if (ptex) { 167 drisw_copy_to_front(ctx->dPriv, ptex); 168 } 169} 170 171/** 172 * Allocate framebuffer attachments. 173 * 174 * During fixed-size operation, the function keeps allocating new attachments 175 * as they are requested. Unused attachments are not removed, not until the 176 * framebuffer is resized or destroyed. 177 * 178 * It should be possible for DRI1 and DRISW to share this function, but it 179 * seems a better seperation and safer for each DRI version to provide its own 180 * function. 181 */ 182static void 183drisw_allocate_textures(struct dri_drawable *drawable, 184 const enum st_attachment_type *statts, 185 unsigned count) 186{ 187 struct dri_screen *screen = dri_screen(drawable->sPriv); 188 struct pipe_resource templ; 189 unsigned width, height; 190 boolean resized; 191 int i; 192 193 width = drawable->dPriv->w; 194 height = drawable->dPriv->h; 195 196 resized = (drawable->old_w != width || 197 drawable->old_h != height); 198 199 /* remove outdated textures */ 200 if (resized) { 201 for (i = 0; i < ST_ATTACHMENT_COUNT; i++) 202 pipe_resource_reference(&drawable->textures[i], NULL); 203 } 204 205 memset(&templ, 0, sizeof(templ)); 206 templ.target = PIPE_TEXTURE_2D; 207 templ.width0 = width; 208 templ.height0 = height; 209 templ.depth0 = 1; 210 templ.last_level = 0; 211 212 for (i = 0; i < ST_ATTACHMENT_COUNT; i++) { 213 enum pipe_format format; 214 unsigned bind; 215 216 /* the texture already exists or not requested */ 217 if (drawable->textures[statts[i]]) 218 continue; 219 220 dri_drawable_get_format(drawable, statts[i], &format, &bind); 221 222 /* if we don't do any present, no need for display targets */ 223 if (statts[i] != ST_ATTACHMENT_DEPTH_STENCIL && !swrast_no_present) 224 bind |= PIPE_BIND_DISPLAY_TARGET; 225 226 if (format == PIPE_FORMAT_NONE) 227 continue; 228 229 templ.format = format; 230 templ.bind = bind; 231 232 drawable->textures[statts[i]] = 233 screen->base.screen->resource_create(screen->base.screen, &templ); 234 } 235 236 drawable->old_w = width; 237 drawable->old_h = height; 238} 239 240/* 241 * Backend function for init_screen. 242 */ 243 244static const __DRIextension *drisw_screen_extensions[] = { 245 NULL 246}; 247 248static struct drisw_loader_funcs drisw_lf = { 249 .put_image = drisw_put_image 250}; 251 252static const __DRIconfig ** 253drisw_init_screen(__DRIscreen * sPriv) 254{ 255 const __DRIconfig **configs; 256 struct dri_screen *screen; 257 struct pipe_screen *pscreen; 258 259 screen = CALLOC_STRUCT(dri_screen); 260 if (!screen) 261 return NULL; 262 263 screen->sPriv = sPriv; 264 screen->fd = -1; 265 screen->allocate_textures = drisw_allocate_textures; 266 screen->update_drawable_info = drisw_update_drawable_info; 267 screen->flush_frontbuffer = drisw_flush_frontbuffer; 268 269 swrast_no_present = debug_get_option_swrast_no_present(); 270 271 sPriv->private = (void *)screen; 272 sPriv->extensions = drisw_screen_extensions; 273 274 pscreen = drisw_create_screen(&drisw_lf); 275 /* dri_init_screen_helper checks pscreen for us */ 276 277 configs = dri_init_screen_helper(screen, pscreen, 32); 278 if (!configs) 279 goto fail; 280 281 return configs; 282fail: 283 dri_destroy_screen_helper(screen); 284 FREE(screen); 285 return NULL; 286} 287 288/** 289 * DRI driver virtual function table. 290 * 291 * DRI versions differ in their implementation of init_screen and swap_buffers. 292 */ 293const struct __DriverAPIRec driDriverAPI = { 294 .DestroyScreen = dri_destroy_screen, 295 .CreateContext = dri_create_context, 296 .DestroyContext = dri_destroy_context, 297 .CreateBuffer = dri_create_buffer, 298 .DestroyBuffer = dri_destroy_buffer, 299 .MakeCurrent = dri_make_current, 300 .UnbindContext = dri_unbind_context, 301 302 .InitScreen = drisw_init_screen, 303 .SwapBuffers = drisw_swap_buffers, 304}; 305 306/* This is the table of extensions that the loader will dlsym() for. */ 307PUBLIC const __DRIextension *__driDriverExtensions[] = { 308 &driCoreExtension.base, 309 &driSWRastExtension.base, 310 NULL 311}; 312 313/* vim: set sw=3 ts=8 sts=3 expandtab: */ 314