| /* |
| * Mesa 3-D graphics library |
| * Version: 7.9 |
| * |
| * Copyright 2009 VMware, Inc. All Rights Reserved. |
| * 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 "state_tracker/st_api.h" |
| |
| #include "pipe/p_context.h" |
| #include "pipe/p_screen.h" |
| #include "util/u_memory.h" |
| #include "util/u_inlines.h" |
| #include "util/u_box.h" |
| #include "util/u_surface.h" |
| |
| #include "vg_api.h" |
| #include "vg_manager.h" |
| #include "vg_context.h" |
| #include "api.h" |
| #include "handle.h" |
| |
| static boolean |
| vg_context_update_color_rb(struct vg_context *ctx, struct pipe_resource *pt) |
| { |
| struct st_renderbuffer *strb = ctx->draw_buffer->strb; |
| struct pipe_context *pipe = ctx->pipe; |
| struct pipe_surface surf_tmpl; |
| |
| if (strb->texture == pt) { |
| pipe_resource_reference(&pt, NULL); |
| return FALSE; |
| } |
| |
| /* unreference existing ones */ |
| pipe_surface_reference(&strb->surface, NULL); |
| pipe_resource_reference(&strb->texture, NULL); |
| strb->width = strb->height = 0; |
| |
| strb->texture = pt; |
| |
| memset(&surf_tmpl, 0, sizeof(surf_tmpl)); |
| u_surface_default_template(&surf_tmpl, strb->texture, |
| PIPE_BIND_RENDER_TARGET); |
| strb->surface = pipe->create_surface(pipe, strb->texture, &surf_tmpl); |
| |
| if (!strb->surface) { |
| pipe_resource_reference(&strb->texture, NULL); |
| return TRUE; |
| } |
| |
| strb->width = pt->width0; |
| strb->height = pt->height0; |
| |
| return TRUE; |
| } |
| |
| /** |
| * Flush the front buffer if the current context renders to the front buffer. |
| */ |
| void |
| vg_manager_flush_frontbuffer(struct vg_context *ctx) |
| { |
| struct st_framebuffer *stfb = ctx->draw_buffer; |
| |
| if (!stfb) |
| return; |
| |
| switch (stfb->strb_att) { |
| case ST_ATTACHMENT_FRONT_LEFT: |
| case ST_ATTACHMENT_FRONT_RIGHT: |
| stfb->iface->flush_front(stfb->iface, stfb->strb_att); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| /** |
| * Re-validate the framebuffer. |
| */ |
| void |
| vg_manager_validate_framebuffer(struct vg_context *ctx) |
| { |
| struct st_framebuffer *stfb = ctx->draw_buffer; |
| struct pipe_resource *pt; |
| int32_t new_stamp; |
| |
| /* no binding surface */ |
| if (!stfb) |
| return; |
| |
| new_stamp = p_atomic_read(&stfb->iface->stamp); |
| if (stfb->iface_stamp != new_stamp) { |
| do { |
| /* validate the fb */ |
| if (!stfb->iface->validate(stfb->iface, &stfb->strb_att, |
| 1, &pt) || !pt) |
| return; |
| |
| stfb->iface_stamp = new_stamp; |
| new_stamp = p_atomic_read(&stfb->iface->stamp); |
| |
| } while (stfb->iface_stamp != new_stamp); |
| |
| if (vg_context_update_color_rb(ctx, pt) || |
| stfb->width != pt->width0 || |
| stfb->height != pt->height0) |
| ++stfb->stamp; |
| |
| stfb->width = pt->width0; |
| stfb->height = pt->height0; |
| } |
| |
| if (ctx->draw_stamp != stfb->stamp) { |
| ctx->state.dirty |= FRAMEBUFFER_DIRTY; |
| ctx->draw_stamp = stfb->stamp; |
| } |
| } |
| |
| static void |
| vg_context_flush(struct st_context_iface *stctxi, unsigned flags, |
| struct pipe_fence_handle **fence) |
| { |
| struct vg_context *ctx = (struct vg_context *) stctxi; |
| ctx->pipe->flush(ctx->pipe, fence); |
| if (flags & ST_FLUSH_FRONT) |
| vg_manager_flush_frontbuffer(ctx); |
| } |
| |
| static void |
| vg_context_destroy(struct st_context_iface *stctxi) |
| { |
| struct vg_context *ctx = (struct vg_context *) stctxi; |
| struct pipe_context *pipe = ctx->pipe; |
| |
| vg_destroy_context(ctx); |
| pipe->destroy(pipe); |
| } |
| |
| static struct st_context_iface * |
| vg_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 vg_context *shared_ctx = (struct vg_context *) shared_stctxi; |
| struct vg_context *ctx; |
| struct pipe_context *pipe; |
| |
| if (!(stapi->profile_mask & (1 << attribs->profile))) { |
| *error = ST_CONTEXT_ERROR_BAD_API; |
| return NULL; |
| } |
| |
| /* only 1.0 is supported */ |
| if (attribs->major > 1 || (attribs->major == 1 && attribs->minor > 0)) { |
| *error = ST_CONTEXT_ERROR_BAD_VERSION; |
| return NULL; |
| } |
| |
| /* for VGHandle / pointer lookups */ |
| init_handles(); |
| |
| pipe = smapi->screen->context_create(smapi->screen, NULL); |
| if (!pipe) { |
| *error = ST_CONTEXT_ERROR_NO_MEMORY; |
| return NULL; |
| } |
| ctx = vg_create_context(pipe, NULL, shared_ctx); |
| if (!ctx) { |
| pipe->destroy(pipe); |
| *error = ST_CONTEXT_ERROR_NO_MEMORY; |
| return NULL; |
| } |
| |
| ctx->iface.destroy = vg_context_destroy; |
| |
| ctx->iface.flush = vg_context_flush; |
| |
| ctx->iface.teximage = NULL; |
| ctx->iface.copy = NULL; |
| |
| ctx->iface.st_context_private = (void *) smapi; |
| |
| return &ctx->iface; |
| } |
| |
| static struct st_renderbuffer * |
| create_renderbuffer(enum pipe_format format) |
| { |
| struct st_renderbuffer *strb; |
| |
| strb = CALLOC_STRUCT(st_renderbuffer); |
| if (strb) |
| strb->format = format; |
| |
| return strb; |
| } |
| |
| static void |
| destroy_renderbuffer(struct st_renderbuffer *strb) |
| { |
| pipe_surface_reference(&strb->surface, NULL); |
| pipe_resource_reference(&strb->texture, NULL); |
| FREE(strb); |
| } |
| |
| /** |
| * Decide the buffer to render to. |
| */ |
| static enum st_attachment_type |
| choose_attachment(struct st_framebuffer_iface *stfbi) |
| { |
| enum st_attachment_type statt; |
| |
| statt = stfbi->visual->render_buffer; |
| if (statt != ST_ATTACHMENT_INVALID) { |
| /* use the buffer given by the visual, unless it is unavailable */ |
| if (!st_visual_have_buffers(stfbi->visual, 1 << statt)) { |
| switch (statt) { |
| case ST_ATTACHMENT_BACK_LEFT: |
| statt = ST_ATTACHMENT_FRONT_LEFT; |
| break; |
| case ST_ATTACHMENT_BACK_RIGHT: |
| statt = ST_ATTACHMENT_FRONT_RIGHT; |
| break; |
| default: |
| break; |
| } |
| |
| if (!st_visual_have_buffers(stfbi->visual, 1 << statt)) |
| statt = ST_ATTACHMENT_INVALID; |
| } |
| } |
| |
| return statt; |
| } |
| |
| /** |
| * Bind the context to the given framebuffers. |
| */ |
| static boolean |
| vg_context_bind_framebuffers(struct st_context_iface *stctxi, |
| struct st_framebuffer_iface *stdrawi, |
| struct st_framebuffer_iface *streadi) |
| { |
| struct vg_context *ctx = (struct vg_context *) stctxi; |
| struct st_framebuffer *stfb; |
| enum st_attachment_type strb_att; |
| |
| /* the draw and read framebuffers must be the same */ |
| if (stdrawi != streadi) |
| return FALSE; |
| |
| strb_att = (stdrawi) ? choose_attachment(stdrawi) : ST_ATTACHMENT_INVALID; |
| |
| if (ctx->draw_buffer) { |
| stfb = ctx->draw_buffer; |
| |
| /* free the existing fb */ |
| if (!stdrawi || |
| stfb->strb_att != strb_att || |
| stfb->strb->format != stdrawi->visual->color_format) { |
| destroy_renderbuffer(stfb->strb); |
| destroy_renderbuffer(stfb->dsrb); |
| FREE(stfb); |
| |
| ctx->draw_buffer = NULL; |
| } |
| } |
| |
| if (!stdrawi) |
| return TRUE; |
| |
| if (strb_att == ST_ATTACHMENT_INVALID) |
| return FALSE; |
| |
| /* create a new fb */ |
| if (!ctx->draw_buffer) { |
| stfb = CALLOC_STRUCT(st_framebuffer); |
| if (!stfb) |
| return FALSE; |
| |
| stfb->strb = create_renderbuffer(stdrawi->visual->color_format); |
| if (!stfb->strb) { |
| FREE(stfb); |
| return FALSE; |
| } |
| |
| stfb->dsrb = create_renderbuffer(ctx->ds_format); |
| if (!stfb->dsrb) { |
| FREE(stfb->strb); |
| FREE(stfb); |
| return FALSE; |
| } |
| |
| stfb->width = 0; |
| stfb->height = 0; |
| stfb->strb_att = strb_att; |
| stfb->stamp = 1; |
| stfb->iface_stamp = p_atomic_read(&stdrawi->stamp) - 1; |
| |
| ctx->draw_buffer = stfb; |
| } |
| |
| ctx->draw_buffer->iface = stdrawi; |
| ctx->draw_stamp = ctx->draw_buffer->stamp - 1; |
| |
| return TRUE; |
| } |
| |
| static boolean |
| vg_api_make_current(struct st_api *stapi, struct st_context_iface *stctxi, |
| struct st_framebuffer_iface *stdrawi, |
| struct st_framebuffer_iface *streadi) |
| { |
| struct vg_context *ctx = (struct vg_context *) stctxi; |
| |
| if (stctxi) |
| vg_context_bind_framebuffers(stctxi, stdrawi, streadi); |
| vg_set_current_context(ctx); |
| |
| return TRUE; |
| } |
| |
| static struct st_context_iface * |
| vg_api_get_current(struct st_api *stapi) |
| { |
| struct vg_context *ctx = vg_current_context(); |
| |
| return (ctx) ? &ctx->iface : NULL; |
| } |
| |
| static st_proc_t |
| vg_api_get_proc_address(struct st_api *stapi, const char *procname) |
| { |
| return api_get_proc_address(procname); |
| } |
| |
| static void |
| vg_api_destroy(struct st_api *stapi) |
| { |
| } |
| |
| static const struct st_api vg_api = { |
| "Vega " VEGA_VERSION_STRING, |
| ST_API_OPENVG, |
| ST_PROFILE_DEFAULT_MASK, |
| 0, |
| vg_api_destroy, |
| vg_api_get_proc_address, |
| vg_api_create_context, |
| vg_api_make_current, |
| vg_api_get_current, |
| }; |
| |
| const struct st_api * |
| vg_api_get(void) |
| { |
| return &vg_api; |
| } |