| /* |
| * Mesa 3-D graphics library |
| * Version: 7.9 |
| * |
| * 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 <olv@lunarg.com> |
| */ |
| |
| #include "main/mtypes.h" |
| #include "main/context.h" |
| #include "main/mfeatures.h" |
| #include "main/texobj.h" |
| #include "main/teximage.h" |
| #include "main/texstate.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_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" |
| |
| /** |
| * Cast wrapper to convert a struct gl_framebuffer to an st_framebuffer. |
| * Return NULL if the struct gl_framebuffer is a user-created framebuffer. |
| * We'll only return non-null for window system framebuffers. |
| * Note that this function may fail. |
| */ |
| static INLINE struct st_framebuffer * |
| st_ws_framebuffer(struct gl_framebuffer *fb) |
| { |
| /* FBO cannot be casted. See st_new_framebuffer */ |
| if (fb && _mesa_is_winsys_fbo(fb)) |
| return (struct st_framebuffer *) fb; |
| return NULL; |
| } |
| |
| /** |
| * 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 |= 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 |= 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 we need to pass in is s dummy context needed only to be |
| * able to get a pipe context to create pipe surfaces, and to have a |
| * context to call _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 = p_atomic_read(&stfb->iface->stamp); |
| |
| if (stfb->iface_stamp == new_stamp) |
| return; |
| |
| /* validate the fb */ |
| do { |
| if (!stfb->iface->validate(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], |
| PIPE_BIND_RENDER_TARGET); |
| ps = st->pipe->create_surface(st->pipe, textures[i], &surf_tmpl); |
| if (ps) { |
| pipe_surface_reference(&strb->surface, ps); |
| 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. |
| */ |
| static boolean |
| st_framebuffer_add_renderbuffer(struct st_framebuffer *stfb, |
| gl_buffer_index idx) |
| { |
| struct gl_renderbuffer *rb; |
| enum pipe_format format; |
| int samples; |
| boolean sw; |
| |
| if (!stfb->iface) |
| return FALSE; |
| |
| /* 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; |
| sw = FALSE; |
| break; |
| } |
| |
| if (format == PIPE_FORMAT_NONE) |
| return FALSE; |
| |
| samples = stfb->iface->visual->samples; |
| if (!samples) |
| samples = st_get_msaa(); |
| |
| rb = st_new_renderbuffer_fb(format, samples, sw); |
| if (!rb) |
| return FALSE; |
| |
| if (idx != BUFFER_DEPTH) { |
| _mesa_add_renderbuffer(&stfb->Base, idx, rb); |
| } |
| else { |
| if (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 0)) |
| _mesa_add_renderbuffer(&stfb->Base, BUFFER_DEPTH, rb); |
| if (util_format_get_component_bits(format, UTIL_FORMAT_COLORSPACE_ZS, 1)) |
| _mesa_add_renderbuffer(&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; |
| } |
| |
| 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) { |
| mode->sampleBuffers = 1; |
| mode->samples = visual->samples; |
| } |
| } |
| |
| /** |
| * Create a framebuffer from a manager interface. |
| */ |
| static struct st_framebuffer * |
| st_framebuffer_create(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); |
| _mesa_initialize_window_framebuffer(&stfb->Base, &mode); |
| |
| stfb->iface = stfbi; |
| 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); |
| |
| stfb->Base.Initialized = GL_TRUE; |
| |
| return stfb; |
| } |
| |
| /** |
| * Reference a framebuffer. |
| */ |
| static 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); |
| } |
| |
| 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; |
| st_flush(st, fence); |
| 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 internal_format, |
| struct pipe_resource *tex, boolean mipmap) |
| { |
| struct st_context *st = (struct st_context *) stctxi; |
| struct gl_context *ctx = st->ctx; |
| struct gl_texture_unit *texUnit = _mesa_get_current_tex_unit(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_select_tex_object(ctx, texUnit, 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) { |
| gl_format texFormat; |
| |
| /* |
| * XXX When internal_format and tex->format differ, st_finalize_texture |
| * needs to allocate a new texture with internal_format and copy the |
| * texture here into the new one. It will result in surface_copy being |
| * called on surfaces whose formats differ. |
| * |
| * To avoid that, internal_format is (wrongly) ignored here. A sane fix |
| * is to use a sampler view. |
| */ |
| if (!st_sampler_compat_formats(tex->format, internal_format)) |
| internal_format = tex->format; |
| |
| if (util_format_get_component_bits(internal_format, |
| UTIL_FORMAT_COLORSPACE_RGB, 3) > 0) |
| internalFormat = GL_RGBA; |
| else |
| internalFormat = GL_RGB; |
| |
| texFormat = st_ChooseTextureFormat(ctx, target, internalFormat, |
| GL_BGRA, GL_UNSIGNED_BYTE); |
| |
| _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->width0 = width; |
| stObj->height0 = height; |
| stObj->depth0 = depth; |
| |
| _mesa_dirty_texobj(ctx, texObj, GL_TRUE); |
| _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 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; |
| |
| if (!(stapi->profile_mask & (1 << attribs->profile))) |
| return NULL; |
| |
| switch (attribs->profile) { |
| case ST_PROFILE_DEFAULT: |
| api = API_OPENGL; |
| break; |
| case ST_PROFILE_OPENGL_ES1: |
| api = API_OPENGLES; |
| break; |
| case ST_PROFILE_OPENGL_ES2: |
| api = API_OPENGLES2; |
| break; |
| case ST_PROFILE_OPENGL_CORE: |
| default: |
| *error = ST_CONTEXT_ERROR_BAD_API; |
| return NULL; |
| break; |
| } |
| |
| pipe = smapi->screen->context_create(smapi->screen, NULL); |
| 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; |
| } |
| |
| /* need to perform version check */ |
| if (attribs->major > 1 || attribs->minor > 0) { |
| _mesa_compute_version(st->ctx); |
| |
| /* Is the actual version less than the requested version? Mesa can't |
| * yet enforce the added restrictions of a forward-looking context, so |
| * fail that too. |
| */ |
| if (st->ctx->Version < attribs->major * 10 + attribs->minor |
| || (attribs->flags & ~ST_CONTEXT_FLAG_DEBUG) != 0) { |
| *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.st_context_private = (void *) smapi; |
| |
| *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 gl_framebuffer *fb, |
| struct st_framebuffer_iface *stfbi) |
| { |
| struct st_framebuffer *cur = st_ws_framebuffer(fb), *stfb = NULL; |
| |
| /* dummy framebuffers cant be used as st_framebuffer */ |
| if (cur && &cur->Base != _mesa_get_incomplete_framebuffer() && |
| cur->iface == stfbi) { |
| /* reuse the current stfb */ |
| st_framebuffer_reference(&stfb, cur); |
| } |
| else { |
| /* create a new one */ |
| stfb = st_framebuffer_create(stfbi); |
| } |
| |
| 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->ctx->WinSysDrawBuffer, |
| stdrawi); |
| if (streadi != stdrawi) { |
| /* do the same for the read fb */ |
| stread = st_framebuffer_reuse_or_create(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); |
| } |
| else { |
| ret = _mesa_make_current(NULL, NULL, NULL); |
| } |
| |
| return ret; |
| } |
| |
| static st_proc_t |
| st_api_get_proc_address(struct st_api *stapi, const char *procname) |
| { |
| return (st_proc_t) _glapi_get_proc_address(procname); |
| } |
| |
| 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 */ |
| assert(&stfb->Base != _mesa_get_incomplete_framebuffer()); |
| stfb->iface->flush_front(stfb->iface, ST_ATTACHMENT_FRONT_LEFT); |
| } |
| |
| /** |
| * Return the surface of an EGLImage. |
| * FIXME: I think this should operate on resources, not surfaces |
| */ |
| struct pipe_surface * |
| st_manager_get_egl_image_surface(struct st_context *st, |
| void *eglimg, unsigned usage) |
| { |
| struct st_manager *smapi = |
| (struct st_manager *) st->iface.st_context_private; |
| struct st_egl_image stimg; |
| struct pipe_surface *ps, surf_tmpl; |
| |
| if (!smapi || !smapi->get_egl_image) |
| return NULL; |
| |
| memset(&stimg, 0, sizeof(stimg)); |
| if (!smapi->get_egl_image(smapi, eglimg, &stimg)) |
| return NULL; |
| |
| u_surface_default_template(&surf_tmpl, stimg.texture, usage); |
| surf_tmpl.u.tex.level = stimg.level; |
| surf_tmpl.u.tex.first_layer = stimg.layer; |
| surf_tmpl.u.tex.last_layer = stimg.layer; |
| ps = st->pipe->create_surface(st->pipe, stimg.texture, &surf_tmpl); |
| pipe_resource_reference(&stimg.texture, NULL); |
| |
| return ps; |
| } |
| |
| /** |
| * 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. |
| */ |
| 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; |
| |
| 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; |
| break; |
| } |
| |
| 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_state(st->ctx, _NEW_BUFFERS); |
| |
| return TRUE; |
| } |
| |
| static const struct st_api st_gl_api = { |
| "Mesa " MESA_VERSION_STRING, |
| ST_API_OPENGL, |
| #if FEATURE_GL |
| ST_PROFILE_DEFAULT_MASK | |
| #endif |
| #if FEATURE_ES1 |
| ST_PROFILE_OPENGL_ES1_MASK | |
| #endif |
| #if FEATURE_ES2 |
| ST_PROFILE_OPENGL_ES2_MASK | |
| #endif |
| 0, |
| 0, |
| st_api_destroy, |
| st_api_get_proc_address, |
| st_api_create_context, |
| st_api_make_current, |
| st_api_get_current, |
| }; |
| |
| struct st_api * |
| st_gl_api_create(void) |
| { |
| return (struct st_api *) &st_gl_api; |
| } |
