/* * Mesa 3-D graphics library * * Copyright (C) 2010 LunarG Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. * * Authors: * Chia-I Wu */ #include "main/mtypes.h" #include "main/extensions.h" #include "main/context.h" #include "main/debug_output.h" #include "main/glthread.h" #include "main/texobj.h" #include "main/teximage.h" #include "main/texstate.h" #include "main/errors.h" #include "main/framebuffer.h" #include "main/fbobject.h" #include "main/renderbuffer.h" #include "main/version.h" #include "st_texture.h" #include "st_context.h" #include "st_debug.h" #include "st_extensions.h" #include "st_format.h" #include "st_cb_fbo.h" #include "st_cb_flush.h" #include "st_manager.h" #include "state_tracker/st_gl_api.h" #include "pipe/p_context.h" #include "pipe/p_screen.h" #include "util/u_format.h" #include "util/u_pointer.h" #include "util/u_inlines.h" #include "util/u_atomic.h" #include "util/u_surface.h" #include "util/list.h" /** * Map an attachment to a buffer index. */ static inline gl_buffer_index attachment_to_buffer_index(enum st_attachment_type statt) { gl_buffer_index index; switch (statt) { case ST_ATTACHMENT_FRONT_LEFT: index = BUFFER_FRONT_LEFT; break; case ST_ATTACHMENT_BACK_LEFT: index = BUFFER_BACK_LEFT; break; case ST_ATTACHMENT_FRONT_RIGHT: index = BUFFER_FRONT_RIGHT; break; case ST_ATTACHMENT_BACK_RIGHT: index = BUFFER_BACK_RIGHT; break; case ST_ATTACHMENT_DEPTH_STENCIL: index = BUFFER_DEPTH; break; case ST_ATTACHMENT_ACCUM: index = BUFFER_ACCUM; break; case ST_ATTACHMENT_SAMPLE: default: index = BUFFER_COUNT; break; } return index; } /** * Map a buffer index to an attachment. */ static inline enum st_attachment_type buffer_index_to_attachment(gl_buffer_index index) { enum st_attachment_type statt; switch (index) { case BUFFER_FRONT_LEFT: statt = ST_ATTACHMENT_FRONT_LEFT; break; case BUFFER_BACK_LEFT: statt = ST_ATTACHMENT_BACK_LEFT; break; case BUFFER_FRONT_RIGHT: statt = ST_ATTACHMENT_FRONT_RIGHT; break; case BUFFER_BACK_RIGHT: statt = ST_ATTACHMENT_BACK_RIGHT; break; case BUFFER_DEPTH: statt = ST_ATTACHMENT_DEPTH_STENCIL; break; case BUFFER_ACCUM: statt = ST_ATTACHMENT_ACCUM; break; default: statt = ST_ATTACHMENT_INVALID; break; } return statt; } /** * Make sure a context picks up the latest cached state of the * drawables it binds to. */ static void st_context_validate(struct st_context *st, struct st_framebuffer *stdraw, struct st_framebuffer *stread) { if (stdraw && stdraw->stamp != st->draw_stamp) { st->dirty |= ST_NEW_FRAMEBUFFER; _mesa_resize_framebuffer(st->ctx, &stdraw->Base, stdraw->Base.Width, stdraw->Base.Height); st->draw_stamp = stdraw->stamp; } if (stread && stread->stamp != st->read_stamp) { if (stread != stdraw) { st->dirty |= ST_NEW_FRAMEBUFFER; _mesa_resize_framebuffer(st->ctx, &stread->Base, stread->Base.Width, stread->Base.Height); } st->read_stamp = stread->stamp; } } /** * Validate a framebuffer to make sure up-to-date pipe_textures are used. * The context is only used for creating pipe surfaces and for calling * _mesa_resize_framebuffer(). * (That should probably be rethought, since those surfaces become * drawable state, not context state, and can be freed by another pipe * context). */ static void st_framebuffer_validate(struct st_framebuffer *stfb, struct st_context *st) { struct pipe_resource *textures[ST_ATTACHMENT_COUNT]; uint width, height; unsigned i; boolean changed = FALSE; int32_t new_stamp; new_stamp = p_atomic_read(&stfb->iface->stamp); if (stfb->iface_stamp == new_stamp) return; /* validate the fb */ do { if (!stfb->iface->validate(&st->iface, stfb->iface, stfb->statts, stfb->num_statts, textures)) return; stfb->iface_stamp = new_stamp; new_stamp = p_atomic_read(&stfb->iface->stamp); } while(stfb->iface_stamp != new_stamp); width = stfb->Base.Width; height = stfb->Base.Height; for (i = 0; i < stfb->num_statts; i++) { struct st_renderbuffer *strb; struct pipe_surface *ps, surf_tmpl; gl_buffer_index idx; if (!textures[i]) continue; idx = attachment_to_buffer_index(stfb->statts[i]); if (idx >= BUFFER_COUNT) { pipe_resource_reference(&textures[i], NULL); continue; } strb = st_renderbuffer(stfb->Base.Attachment[idx].Renderbuffer); assert(strb); if (strb->texture == textures[i]) { pipe_resource_reference(&textures[i], NULL); continue; } u_surface_default_template(&surf_tmpl, textures[i]); ps = st->pipe->create_surface(st->pipe, textures[i], &surf_tmpl); if (ps) { struct pipe_surface **psurf = util_format_is_srgb(ps->format) ? &strb->surface_srgb : &strb->surface_linear; pipe_surface_reference(psurf, ps); strb->surface = *psurf; pipe_resource_reference(&strb->texture, ps->texture); /* ownership transfered */ pipe_surface_reference(&ps, NULL); changed = TRUE; strb->Base.Width = strb->surface->width; strb->Base.Height = strb->surface->height; width = strb->Base.Width; height = strb->Base.Height; } pipe_resource_reference(&textures[i], NULL); } if (changed) { ++stfb->stamp; _mesa_resize_framebuffer(st->ctx, &stfb->Base, width, height); } } /** * Update the attachments to validate by looping the existing renderbuffers. */ static void st_framebuffer_update_attachments(struct st_framebuffer *stfb) { gl_buffer_index idx; stfb->num_statts = 0; for (idx = 0; idx < BUFFER_COUNT; idx++) { struct st_renderbuffer *strb; enum st_attachment_type statt; strb = st_renderbuffer(stfb->Base.Attachment[idx].Renderbuffer); if (!strb || strb->software) continue; statt = buffer_index_to_attachment(idx); if (statt != ST_ATTACHMENT_INVALID && st_visual_have_buffers(stfb->iface->visual, 1 << statt)) stfb->statts[stfb->num_statts++] = statt; } stfb->stamp++; } /** * Add a renderbuffer to the framebuffer. The framebuffer is one that * corresponds to a window and is not a user-created FBO. */ static boolean st_framebuffer_add_renderbuffer(struct st_framebuffer *stfb, gl_buffer_index idx) { struct gl_renderbuffer *rb; enum pipe_format format; boolean sw; assert(_mesa_is_winsys_fbo(&stfb->Base)); /* do not distinguish depth/stencil buffers */ if (idx == BUFFER_STENCIL) idx = BUFFER_DEPTH; switch (idx) { case BUFFER_DEPTH: format = stfb->iface->visual->depth_stencil_format; sw = FALSE; break; case BUFFER_ACCUM: format = stfb->iface->visual->accum_format; sw = TRUE; break; default: format = stfb->iface->visual->color_format; if (stfb->Base.Visual.sRGBCapable) format = util_format_srgb(format); sw = FALSE; break; } if (format == PIPE_FORMAT_NONE) return FALSE; rb = st_new_renderbuffer_fb(format, stfb->iface->visual->samples, sw); if (!rb) return FALSE; if (idx != BUFFER_DEPTH) { _mesa_attach_and_own_rb(&stfb->Base, idx, rb); return TRUE; } bool rb_ownership_taken = false; if (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 0)) { _mesa_attach_and_own_rb(&stfb->Base, BUFFER_DEPTH, rb); rb_ownership_taken = true; } if (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 1)) { if (rb_ownership_taken) _mesa_attach_and_reference_rb(&stfb->Base, BUFFER_STENCIL, rb); else _mesa_attach_and_own_rb(&stfb->Base, BUFFER_STENCIL, rb); } return TRUE; } /** * Intialize a struct gl_config from a visual. */ static void st_visual_to_context_mode(const struct st_visual *visual, struct gl_config *mode) { memset(mode, 0, sizeof(*mode)); if (st_visual_have_buffers(visual, ST_ATTACHMENT_BACK_LEFT_MASK)) mode->doubleBufferMode = GL_TRUE; if (st_visual_have_buffers(visual, ST_ATTACHMENT_FRONT_RIGHT_MASK | ST_ATTACHMENT_BACK_RIGHT_MASK)) mode->stereoMode = GL_TRUE; if (visual->color_format != PIPE_FORMAT_NONE) { mode->rgbMode = GL_TRUE; mode->redBits = util_format_get_component_bits(visual->color_format, UTIL_FORMAT_COLORSPACE_RGB, 0); mode->greenBits = util_format_get_component_bits(visual->color_format, UTIL_FORMAT_COLORSPACE_RGB, 1); mode->blueBits = util_format_get_component_bits(visual->color_format, UTIL_FORMAT_COLORSPACE_RGB, 2); mode->alphaBits = util_format_get_component_bits(visual->color_format, UTIL_FORMAT_COLORSPACE_RGB, 3); mode->rgbBits = mode->redBits + mode->greenBits + mode->blueBits + mode->alphaBits; mode->sRGBCapable = util_format_is_srgb(visual->color_format); } if (visual->depth_stencil_format != PIPE_FORMAT_NONE) { mode->depthBits = util_format_get_component_bits(visual->depth_stencil_format, UTIL_FORMAT_COLORSPACE_ZS, 0); mode->stencilBits = util_format_get_component_bits(visual->depth_stencil_format, UTIL_FORMAT_COLORSPACE_ZS, 1); mode->haveDepthBuffer = mode->depthBits > 0; mode->haveStencilBuffer = mode->stencilBits > 0; } if (visual->accum_format != PIPE_FORMAT_NONE) { mode->haveAccumBuffer = GL_TRUE; mode->accumRedBits = util_format_get_component_bits(visual->accum_format, UTIL_FORMAT_COLORSPACE_RGB, 0); mode->accumGreenBits = util_format_get_component_bits(visual->accum_format, UTIL_FORMAT_COLORSPACE_RGB, 1); mode->accumBlueBits = util_format_get_component_bits(visual->accum_format, UTIL_FORMAT_COLORSPACE_RGB, 2); mode->accumAlphaBits = util_format_get_component_bits(visual->accum_format, UTIL_FORMAT_COLORSPACE_RGB, 3); } if (visual->samples > 1) { mode->sampleBuffers = 1; mode->samples = visual->samples; } } /** * Create a framebuffer from a manager interface. */ static struct st_framebuffer * st_framebuffer_create(struct st_context *st, struct st_framebuffer_iface *stfbi) { struct st_framebuffer *stfb; struct gl_config mode; gl_buffer_index idx; if (!stfbi) return NULL; stfb = CALLOC_STRUCT(st_framebuffer); if (!stfb) return NULL; st_visual_to_context_mode(stfbi->visual, &mode); /* * For desktop GL, sRGB framebuffer write is controlled by both the * capability of the framebuffer and GL_FRAMEBUFFER_SRGB. We should * advertise the capability when the pipe driver (and core Mesa) supports * it so that applications can enable sRGB write when they want to. * * This is not to be confused with GLX_FRAMEBUFFER_SRGB_CAPABLE_ARB. When * the attribute is GLX_TRUE, it tells the st manager to pick a color * format such that util_format_srgb(visual->color_format) can be supported * by the pipe driver. We still need to advertise the capability here. * * For GLES, however, sRGB framebuffer write is controlled only by the * capability of the framebuffer. There is GL_EXT_sRGB_write_control to * give applications the control back, but sRGB write is still enabled by * default. To avoid unexpected results, we should not advertise the * capability. This could change when we add support for * EGL_KHR_gl_colorspace. */ if (_mesa_is_desktop_gl(st->ctx)) { struct pipe_screen *screen = st->pipe->screen; const enum pipe_format srgb_format = util_format_srgb(stfbi->visual->color_format); if (srgb_format != PIPE_FORMAT_NONE && st_pipe_format_to_mesa_format(srgb_format) != MESA_FORMAT_NONE && screen->is_format_supported(screen, srgb_format, PIPE_TEXTURE_2D, stfbi->visual->samples, (PIPE_BIND_DISPLAY_TARGET | PIPE_BIND_RENDER_TARGET))) mode.sRGBCapable = GL_TRUE; } _mesa_initialize_window_framebuffer(&stfb->Base, &mode); stfb->iface = stfbi; stfb->iface_ID = stfbi->ID; stfb->iface_stamp = p_atomic_read(&stfbi->stamp) - 1; /* add the color buffer */ idx = stfb->Base._ColorDrawBufferIndexes[0]; if (!st_framebuffer_add_renderbuffer(stfb, idx)) { free(stfb); return NULL; } st_framebuffer_add_renderbuffer(stfb, BUFFER_DEPTH); st_framebuffer_add_renderbuffer(stfb, BUFFER_ACCUM); stfb->stamp = 0; st_framebuffer_update_attachments(stfb); return stfb; } /** * Reference a framebuffer. */ void st_framebuffer_reference(struct st_framebuffer **ptr, struct st_framebuffer *stfb) { struct gl_framebuffer *fb = &stfb->Base; _mesa_reference_framebuffer((struct gl_framebuffer **) ptr, fb); } /** * Purge the winsys buffers list to remove any references to * non-existing framebuffer interface objects. */ static void st_framebuffers_purge(struct st_context *st) { struct st_framebuffer *stfb, *next; LIST_FOR_EACH_ENTRY_SAFE_REV(stfb, next, &st->winsys_buffers, head) { /** * If the corresponding framebuffer interface object no longer exists, * remove the framebuffer object from the context's winsys buffers list, * and unreference the framebuffer object, so its resources can be * deleted. */ if (stfb->iface->ID != stfb->iface_ID) { LIST_DEL(&stfb->head); st_framebuffer_reference(&stfb, NULL); } } } static void st_context_flush(struct st_context_iface *stctxi, unsigned flags, struct pipe_fence_handle **fence) { struct st_context *st = (struct st_context *) stctxi; unsigned pipe_flags = 0; if (flags & ST_FLUSH_END_OF_FRAME) { pipe_flags |= PIPE_FLUSH_END_OF_FRAME; } st_flush(st, fence, pipe_flags); if ((flags & ST_FLUSH_WAIT) && fence) { st->pipe->screen->fence_finish(st->pipe->screen, NULL, *fence, PIPE_TIMEOUT_INFINITE); st->pipe->screen->fence_reference(st->pipe->screen, fence, NULL); } if (flags & ST_FLUSH_FRONT) st_manager_flush_frontbuffer(st); } static boolean st_context_teximage(struct st_context_iface *stctxi, enum st_texture_type tex_type, int level, enum pipe_format pipe_format, struct pipe_resource *tex, boolean mipmap) { struct st_context *st = (struct st_context *) stctxi; struct gl_context *ctx = st->ctx; struct gl_texture_object *texObj; struct gl_texture_image *texImage; struct st_texture_object *stObj; struct st_texture_image *stImage; GLenum internalFormat; GLuint width, height, depth; GLenum target; switch (tex_type) { case ST_TEXTURE_1D: target = GL_TEXTURE_1D; break; case ST_TEXTURE_2D: target = GL_TEXTURE_2D; break; case ST_TEXTURE_3D: target = GL_TEXTURE_3D; break; case ST_TEXTURE_RECT: target = GL_TEXTURE_RECTANGLE_ARB; break; default: return FALSE; } texObj = _mesa_get_current_tex_object(ctx, target); _mesa_lock_texture(ctx, texObj); stObj = st_texture_object(texObj); /* switch to surface based */ if (!stObj->surface_based) { _mesa_clear_texture_object(ctx, texObj); stObj->surface_based = GL_TRUE; } texImage = _mesa_get_tex_image(ctx, texObj, target, level); stImage = st_texture_image(texImage); if (tex) { mesa_format texFormat = st_pipe_format_to_mesa_format(pipe_format); if (util_format_has_alpha(tex->format)) internalFormat = GL_RGBA; else internalFormat = GL_RGB; _mesa_init_teximage_fields(ctx, texImage, tex->width0, tex->height0, 1, 0, internalFormat, texFormat); width = tex->width0; height = tex->height0; depth = tex->depth0; /* grow the image size until we hit level = 0 */ while (level > 0) { if (width != 1) width <<= 1; if (height != 1) height <<= 1; if (depth != 1) depth <<= 1; level--; } } else { _mesa_clear_texture_image(ctx, texImage); width = height = depth = 0; } pipe_resource_reference(&stImage->pt, tex); stObj->surface_format = pipe_format; stObj->needs_validation = true; _mesa_dirty_texobj(ctx, texObj); _mesa_unlock_texture(ctx, texObj); return TRUE; } static void st_context_copy(struct st_context_iface *stctxi, struct st_context_iface *stsrci, unsigned mask) { struct st_context *st = (struct st_context *) stctxi; struct st_context *src = (struct st_context *) stsrci; _mesa_copy_context(src->ctx, st->ctx, mask); } static boolean st_context_share(struct st_context_iface *stctxi, struct st_context_iface *stsrci) { struct st_context *st = (struct st_context *) stctxi; struct st_context *src = (struct st_context *) stsrci; return _mesa_share_state(st->ctx, src->ctx); } static void st_context_destroy(struct st_context_iface *stctxi) { struct st_context *st = (struct st_context *) stctxi; st_destroy_context(st); } static void st_start_thread(struct st_context_iface *stctxi) { struct st_context *st = (struct st_context *) stctxi; _mesa_glthread_init(st->ctx); } static void st_thread_finish(struct st_context_iface *stctxi) { struct st_context *st = (struct st_context *) stctxi; _mesa_glthread_finish(st->ctx); } static struct st_context_iface * st_api_create_context(struct st_api *stapi, struct st_manager *smapi, const struct st_context_attribs *attribs, enum st_context_error *error, struct st_context_iface *shared_stctxi) { struct st_context *shared_ctx = (struct st_context *) shared_stctxi; struct st_context *st; struct pipe_context *pipe; struct gl_config mode; gl_api api; unsigned ctx_flags = PIPE_CONTEXT_PREFER_THREADED; if (!(stapi->profile_mask & (1 << attribs->profile))) return NULL; switch (attribs->profile) { case ST_PROFILE_DEFAULT: api = API_OPENGL_COMPAT; break; case ST_PROFILE_OPENGL_ES1: api = API_OPENGLES; break; case ST_PROFILE_OPENGL_ES2: api = API_OPENGLES2; break; case ST_PROFILE_OPENGL_CORE: api = API_OPENGL_CORE; break; default: *error = ST_CONTEXT_ERROR_BAD_API; return NULL; } if (attribs->flags & ST_CONTEXT_FLAG_ROBUST_ACCESS) ctx_flags |= PIPE_CONTEXT_ROBUST_BUFFER_ACCESS; pipe = smapi->screen->context_create(smapi->screen, NULL, ctx_flags); if (!pipe) { *error = ST_CONTEXT_ERROR_NO_MEMORY; return NULL; } st_visual_to_context_mode(&attribs->visual, &mode); st = st_create_context(api, pipe, &mode, shared_ctx, &attribs->options); if (!st) { *error = ST_CONTEXT_ERROR_NO_MEMORY; pipe->destroy(pipe); return NULL; } if (attribs->flags & ST_CONTEXT_FLAG_DEBUG) { if (!_mesa_set_debug_state_int(st->ctx, GL_DEBUG_OUTPUT, GL_TRUE)) { *error = ST_CONTEXT_ERROR_NO_MEMORY; return NULL; } st->ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_DEBUG_BIT; } if (st->ctx->Const.ContextFlags & GL_CONTEXT_FLAG_DEBUG_BIT) { st_update_debug_callback(st); } if (attribs->flags & ST_CONTEXT_FLAG_FORWARD_COMPATIBLE) st->ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT; if (attribs->flags & ST_CONTEXT_FLAG_ROBUST_ACCESS) { st->ctx->Const.ContextFlags |= GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT_ARB; st->ctx->Const.RobustAccess = GL_TRUE; } if (attribs->flags & ST_CONTEXT_FLAG_RESET_NOTIFICATION_ENABLED) { st->ctx->Const.ResetStrategy = GL_LOSE_CONTEXT_ON_RESET_ARB; st_install_device_reset_callback(st); } /* need to perform version check */ if (attribs->major > 1 || attribs->minor > 0) { /* Is the actual version less than the requested version? */ if (st->ctx->Version < attribs->major * 10U + attribs->minor) { *error = ST_CONTEXT_ERROR_BAD_VERSION; st_destroy_context(st); return NULL; } } st->invalidate_on_gl_viewport = smapi->get_param(smapi, ST_MANAGER_BROKEN_INVALIDATE); st->iface.destroy = st_context_destroy; st->iface.flush = st_context_flush; st->iface.teximage = st_context_teximage; st->iface.copy = st_context_copy; st->iface.share = st_context_share; st->iface.start_thread = st_start_thread; st->iface.thread_finish = st_thread_finish; st->iface.st_context_private = (void *) smapi; st->iface.cso_context = st->cso_context; st->iface.pipe = st->pipe; *error = ST_CONTEXT_SUCCESS; return &st->iface; } static struct st_context_iface * st_api_get_current(struct st_api *stapi) { GET_CURRENT_CONTEXT(ctx); struct st_context *st = (ctx) ? ctx->st : NULL; return (st) ? &st->iface : NULL; } static struct st_framebuffer * st_framebuffer_reuse_or_create(struct st_context *st, struct gl_framebuffer *fb, struct st_framebuffer_iface *stfbi) { struct st_framebuffer *cur = NULL, *stfb = NULL; /* Check if there is already a framebuffer object for the specified * framebuffer interface in this context. If there is one, use it. */ LIST_FOR_EACH_ENTRY(cur, &st->winsys_buffers, head) { if (cur->iface_ID == stfbi->ID) { st_framebuffer_reference(&stfb, cur); break; } } /* If there is not already a framebuffer object, create one */ if (stfb == NULL) { cur = st_framebuffer_create(st, stfbi); /* add to the context's winsys buffers list */ LIST_ADD(&cur->head, &st->winsys_buffers); st_framebuffer_reference(&stfb, cur); } return stfb; } static boolean st_api_make_current(struct st_api *stapi, struct st_context_iface *stctxi, struct st_framebuffer_iface *stdrawi, struct st_framebuffer_iface *streadi) { struct st_context *st = (struct st_context *) stctxi; struct st_framebuffer *stdraw, *stread; boolean ret; _glapi_check_multithread(); if (st) { /* reuse or create the draw fb */ stdraw = st_framebuffer_reuse_or_create(st, st->ctx->WinSysDrawBuffer, stdrawi); if (streadi != stdrawi) { /* do the same for the read fb */ stread = st_framebuffer_reuse_or_create(st, st->ctx->WinSysReadBuffer, streadi); } else { stread = NULL; /* reuse the draw fb for the read fb */ if (stdraw) st_framebuffer_reference(&stread, stdraw); } if (stdraw && stread) { st_framebuffer_validate(stdraw, st); if (stread != stdraw) st_framebuffer_validate(stread, st); ret = _mesa_make_current(st->ctx, &stdraw->Base, &stread->Base); st->draw_stamp = stdraw->stamp - 1; st->read_stamp = stread->stamp - 1; st_context_validate(st, stdraw, stread); } else { struct gl_framebuffer *incomplete = _mesa_get_incomplete_framebuffer(); ret = _mesa_make_current(st->ctx, incomplete, incomplete); } st_framebuffer_reference(&stdraw, NULL); st_framebuffer_reference(&stread, NULL); /* Purge the context's winsys_buffers list in case any * of the referenced drawables no longer exist. */ st_framebuffers_purge(st); } else { ret = _mesa_make_current(NULL, NULL, NULL); } return ret; } static void st_api_destroy(struct st_api *stapi) { } /** * Flush the front buffer if the current context renders to the front buffer. */ void st_manager_flush_frontbuffer(struct st_context *st) { struct st_framebuffer *stfb = st_ws_framebuffer(st->ctx->DrawBuffer); struct st_renderbuffer *strb = NULL; if (stfb) strb = st_renderbuffer(stfb->Base.Attachment[BUFFER_FRONT_LEFT].Renderbuffer); if (!strb) return; /* never a dummy fb */ stfb->iface->flush_front(&st->iface, stfb->iface, ST_ATTACHMENT_FRONT_LEFT); } /** * Re-validate the framebuffers. */ void st_manager_validate_framebuffers(struct st_context *st) { struct st_framebuffer *stdraw = st_ws_framebuffer(st->ctx->DrawBuffer); struct st_framebuffer *stread = st_ws_framebuffer(st->ctx->ReadBuffer); if (stdraw) st_framebuffer_validate(stdraw, st); if (stread && stread != stdraw) st_framebuffer_validate(stread, st); st_context_validate(st, stdraw, stread); } /** * Add a color renderbuffer on demand. The FBO must correspond to a window, * not a user-created FBO. */ boolean st_manager_add_color_renderbuffer(struct st_context *st, struct gl_framebuffer *fb, gl_buffer_index idx) { struct st_framebuffer *stfb = st_ws_framebuffer(fb); /* FBO */ if (!stfb) return FALSE; assert(_mesa_is_winsys_fbo(fb)); if (stfb->Base.Attachment[idx].Renderbuffer) return TRUE; switch (idx) { case BUFFER_FRONT_LEFT: case BUFFER_BACK_LEFT: case BUFFER_FRONT_RIGHT: case BUFFER_BACK_RIGHT: break; default: return FALSE; } if (!st_framebuffer_add_renderbuffer(stfb, idx)) return FALSE; st_framebuffer_update_attachments(stfb); /* * Force a call to the state tracker manager to validate the * new renderbuffer. It might be that there is a window system * renderbuffer available. */ if (stfb->iface) stfb->iface_stamp = p_atomic_read(&stfb->iface->stamp) - 1; st_invalidate_buffers(st); return TRUE; } static unsigned get_version(struct pipe_screen *screen, struct st_config_options *options, gl_api api) { struct gl_constants consts = {0}; struct gl_extensions extensions = {0}; GLuint version; if (_mesa_override_gl_version_contextless(&consts, &api, &version)) { return version; } _mesa_init_constants(&consts, api); _mesa_init_extensions(&extensions); st_init_limits(screen, &consts, &extensions); st_init_extensions(screen, &consts, &extensions, options, GL_TRUE); return _mesa_get_version(&extensions, &consts, api); } static void st_api_query_versions(struct st_api *stapi, struct st_manager *sm, struct st_config_options *options, int *gl_core_version, int *gl_compat_version, int *gl_es1_version, int *gl_es2_version) { *gl_core_version = get_version(sm->screen, options, API_OPENGL_CORE); *gl_compat_version = get_version(sm->screen, options, API_OPENGL_COMPAT); *gl_es1_version = get_version(sm->screen, options, API_OPENGLES); *gl_es2_version = get_version(sm->screen, options, API_OPENGLES2); } static const struct st_api st_gl_api = { .name = "Mesa " PACKAGE_VERSION, .api = ST_API_OPENGL, .profile_mask = ST_PROFILE_DEFAULT_MASK | ST_PROFILE_OPENGL_CORE_MASK | ST_PROFILE_OPENGL_ES1_MASK | ST_PROFILE_OPENGL_ES2_MASK | 0, .feature_mask = ST_API_FEATURE_MS_VISUALS_MASK, .destroy = st_api_destroy, .query_versions = st_api_query_versions, .create_context = st_api_create_context, .make_current = st_api_make_current, .get_current = st_api_get_current, }; struct st_api * st_gl_api_create(void) { return (struct st_api *) &st_gl_api; }