diff options
Diffstat (limited to 'src/gallium/state_trackers/vega/vg_manager.c')
| -rw-r--r-- | src/gallium/state_trackers/vega/vg_manager.c | 373 |
1 files changed, 373 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/vega/vg_manager.c b/src/gallium/state_trackers/vega/vg_manager.c new file mode 100644 index 00000000000..25c2e853f2a --- /dev/null +++ b/src/gallium/state_trackers/vega/vg_manager.c @@ -0,0 +1,373 @@ +/* + * 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 + * BRIAN PAUL 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 <[email protected]> + */ + +#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 "vg_manager.h" +#include "vg_context.h" +#include "vg_tracker.h" /* for st_resize_framebuffer */ +#include "image.h" + +/** + * 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; + + /* st_public.h is used */ + if (!stfb->iface) { + struct pipe_screen *screen = ctx->pipe->screen; + if (screen->flush_frontbuffer) { + screen->flush_frontbuffer(screen, + stfb->strb->surface, ctx->pipe->priv); + } + 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 pipe_screen *screen = ctx->pipe->screen; + struct st_framebuffer *stfb = ctx->draw_buffer; + struct st_renderbuffer *rb; + struct pipe_texture *pt; + + /* no binding surface */ + if (!stfb) + return; + + /* st_public.h is used */ + if (!stfb->iface) { + struct pipe_screen *screen = ctx->pipe->screen; + if (screen->update_buffer) + screen->update_buffer(screen, ctx->pipe->priv); + return; + } + + if (!p_atomic_read(&ctx->draw_buffer_invalid)) + return; + + /* validate the fb */ + if (!stfb->iface->validate(stfb->iface, &stfb->strb_att, 1, &pt) || !pt) + return; + + rb = stfb->strb; + if (rb->texture == pt) { + pipe_texture_reference(&pt, NULL); + return; + } + + /* unreference existing ones */ + pipe_surface_reference(&rb->surface, NULL); + pipe_texture_reference(&rb->texture, NULL); + + rb->texture = pt; + rb->surface = screen->get_tex_surface(screen, rb->texture, 0, 0, 0, + PIPE_BUFFER_USAGE_GPU_READ | PIPE_BUFFER_USAGE_GPU_WRITE); + + rb->width = rb->surface->width; + rb->height = rb->surface->height; + + st_resize_framebuffer(stfb, rb->width, rb->height); + + p_atomic_set(&ctx->draw_buffer_invalid, FALSE); +} + + +static void +vg_context_notify_invalid_framebuffer(struct st_context_iface *stctxi, + struct st_framebuffer_iface *stfbi) +{ + struct vg_context *ctx = (struct vg_context *) stctxi; + p_atomic_set(&ctx->draw_buffer_invalid, TRUE); +} + +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, flags, fence); + if (flags & PIPE_FLUSH_RENDER_CACHE) + vg_manager_flush_frontbuffer(ctx); +} + +static void +vg_context_destroy(struct st_context_iface *stctxi) +{ + struct vg_context *ctx = (struct vg_context *) stctxi; + vg_destroy_context(ctx); +} + +static struct st_context_iface * +vg_api_create_context(struct st_api *stapi, struct st_manager *smapi, + const struct st_visual *visual, + struct st_context_iface *shared_stctxi) +{ + struct vg_context *shared_ctx = (struct vg_context *) shared_stctxi; + struct vg_context *ctx; + struct pipe_context *pipe; + + pipe = smapi->screen->context_create(smapi->screen, NULL); + if (!pipe) + return NULL; + ctx = vg_create_context(pipe, NULL, shared_ctx); + if (!ctx) { + pipe->destroy(pipe); + return NULL; + } + + ctx->iface.destroy = vg_context_destroy; + + ctx->iface.notify_invalid_framebuffer = + vg_context_notify_invalid_framebuffer; + 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_texture_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; + + p_atomic_set(&ctx->draw_buffer_invalid, TRUE); + + 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 || + stfb->dsrb->format != stdrawi->visual->depth_stencil_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(stdrawi->visual->depth_stencil_format); + if (!stfb->dsrb) { + free(stfb->strb); + free(stfb); + return FALSE; + } + + stfb->width = 0; + stfb->height = 0; + stfb->strb_att = strb_att; + + ctx->draw_buffer = stfb; + } + + ctx->draw_buffer->iface = stdrawi; + + 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 boolean +vg_api_is_visual_supported(struct st_api *stapi, + const struct st_visual *visual) +{ + /* the impl requires a depth/stencil buffer */ + if (visual->depth_stencil_format == PIPE_FORMAT_NONE) + return FALSE; + + return TRUE; +} + +static st_proc_t +vg_api_get_proc_address(struct st_api *stapi, const char *procname) +{ + /* TODO */ + return (st_proc_t) NULL; +} + +static void +vg_api_destroy(struct st_api *stapi) +{ + free(stapi); +} + +static struct st_api * +vg_module_create_api(void) +{ + struct st_api *stapi; + + stapi = CALLOC_STRUCT(st_api); + if (stapi) { + stapi->destroy = vg_api_destroy; + stapi->get_proc_address = vg_api_get_proc_address; + stapi->is_visual_supported = vg_api_is_visual_supported; + + stapi->create_context = vg_api_create_context; + stapi->make_current = vg_api_make_current; + stapi->get_current = vg_api_get_current; + } + + return stapi; +} + +PUBLIC const struct st_module st_module_OpenVG = { + .api = ST_API_OPENVG, + .create_api = vg_module_create_api, +}; |