| /************************************************************************** |
| * |
| * Copyright 2009, VMware, Inc. |
| * All Rights Reserved. |
| * Copyright 2010 George Sapountzis <gsapountzis@gmail.com> |
| * |
| * 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, sub license, 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 (including the |
| * next paragraph) 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 NON-INFRINGEMENT. |
| * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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. |
| * |
| **************************************************************************/ |
| |
| /* TODO: |
| * |
| * xshm / EGLImage: |
| * |
| * Allow the loaders to use the XSHM extension. It probably requires callbacks |
| * for createImage/destroyImage similar to DRI2 getBuffers. |
| */ |
| |
| #include "util/u_format.h" |
| #include "util/u_memory.h" |
| #include "util/u_inlines.h" |
| #include "pipe/p_context.h" |
| #include "state_tracker/drisw_api.h" |
| #include "state_tracker/st_context.h" |
| |
| #include "dri_screen.h" |
| #include "dri_context.h" |
| #include "dri_drawable.h" |
| |
| DEBUG_GET_ONCE_BOOL_OPTION(swrast_no_present, "SWRAST_NO_PRESENT", FALSE); |
| static boolean swrast_no_present = FALSE; |
| |
| static INLINE void |
| get_drawable_info(__DRIdrawable *dPriv, int *x, int *y, int *w, int *h) |
| { |
| __DRIscreen *sPriv = dPriv->driScreenPriv; |
| const __DRIswrastLoaderExtension *loader = sPriv->swrast_loader; |
| |
| loader->getDrawableInfo(dPriv, |
| x, y, w, h, |
| dPriv->loaderPrivate); |
| } |
| |
| static INLINE void |
| put_image(__DRIdrawable *dPriv, void *data, unsigned width, unsigned height) |
| { |
| __DRIscreen *sPriv = dPriv->driScreenPriv; |
| const __DRIswrastLoaderExtension *loader = sPriv->swrast_loader; |
| |
| loader->putImage(dPriv, __DRI_SWRAST_IMAGE_OP_SWAP, |
| 0, 0, width, height, |
| data, dPriv->loaderPrivate); |
| } |
| |
| static INLINE void |
| get_image(__DRIdrawable *dPriv, int x, int y, int width, int height, void *data) |
| { |
| __DRIscreen *sPriv = dPriv->driScreenPriv; |
| const __DRIswrastLoaderExtension *loader = sPriv->swrast_loader; |
| |
| loader->getImage(dPriv, |
| x, y, width, height, |
| data, dPriv->loaderPrivate); |
| } |
| |
| static void |
| drisw_update_drawable_info(struct dri_drawable *drawable) |
| { |
| __DRIdrawable *dPriv = drawable->dPriv; |
| int x, y; |
| |
| get_drawable_info(dPriv, &x, &y, &dPriv->w, &dPriv->h); |
| } |
| |
| static void |
| drisw_put_image(struct dri_drawable *drawable, |
| void *data, unsigned width, unsigned height) |
| { |
| __DRIdrawable *dPriv = drawable->dPriv; |
| |
| put_image(dPriv, data, width, height); |
| } |
| |
| static INLINE void |
| drisw_present_texture(__DRIdrawable *dPriv, |
| struct pipe_resource *ptex) |
| { |
| struct dri_drawable *drawable = dri_drawable(dPriv); |
| struct dri_screen *screen = dri_screen(drawable->sPriv); |
| |
| if (swrast_no_present) |
| return; |
| |
| screen->base.screen->flush_frontbuffer(screen->base.screen, ptex, 0, 0, drawable); |
| } |
| |
| static INLINE void |
| drisw_invalidate_drawable(__DRIdrawable *dPriv) |
| { |
| struct dri_drawable *drawable = dri_drawable(dPriv); |
| |
| drawable->texture_stamp = dPriv->lastStamp - 1; |
| |
| p_atomic_inc(&drawable->base.stamp); |
| } |
| |
| static INLINE void |
| drisw_copy_to_front(__DRIdrawable * dPriv, |
| struct pipe_resource *ptex) |
| { |
| drisw_present_texture(dPriv, ptex); |
| |
| drisw_invalidate_drawable(dPriv); |
| } |
| |
| /* |
| * Backend functions for st_framebuffer interface and swap_buffers. |
| */ |
| |
| static void |
| drisw_swap_buffers(__DRIdrawable *dPriv) |
| { |
| struct dri_context *ctx = dri_get_current(dPriv->driScreenPriv); |
| struct dri_drawable *drawable = dri_drawable(dPriv); |
| struct pipe_resource *ptex; |
| |
| if (!ctx) |
| return; |
| |
| ptex = drawable->textures[ST_ATTACHMENT_BACK_LEFT]; |
| |
| if (ptex) { |
| if (ctx->pp && drawable->textures[ST_ATTACHMENT_DEPTH_STENCIL]) |
| pp_run(ctx->pp, ptex, ptex, drawable->textures[ST_ATTACHMENT_DEPTH_STENCIL]); |
| |
| ctx->st->flush(ctx->st, ST_FLUSH_FRONT, NULL); |
| |
| drisw_copy_to_front(dPriv, ptex); |
| } |
| } |
| |
| static void |
| drisw_flush_frontbuffer(struct dri_drawable *drawable, |
| enum st_attachment_type statt) |
| { |
| struct dri_context *ctx = dri_get_current(drawable->sPriv); |
| struct pipe_resource *ptex; |
| |
| if (!ctx) |
| return; |
| |
| ptex = drawable->textures[statt]; |
| |
| if (ptex) { |
| drisw_copy_to_front(ctx->dPriv, ptex); |
| } |
| } |
| |
| /** |
| * Allocate framebuffer attachments. |
| * |
| * During fixed-size operation, the function keeps allocating new attachments |
| * as they are requested. Unused attachments are not removed, not until the |
| * framebuffer is resized or destroyed. |
| */ |
| static void |
| drisw_allocate_textures(struct dri_drawable *drawable, |
| const enum st_attachment_type *statts, |
| unsigned count) |
| { |
| struct dri_screen *screen = dri_screen(drawable->sPriv); |
| struct pipe_resource templ; |
| unsigned width, height; |
| boolean resized; |
| unsigned i; |
| |
| width = drawable->dPriv->w; |
| height = drawable->dPriv->h; |
| |
| resized = (drawable->old_w != width || |
| drawable->old_h != height); |
| |
| /* remove outdated textures */ |
| if (resized) { |
| for (i = 0; i < ST_ATTACHMENT_COUNT; i++) |
| pipe_resource_reference(&drawable->textures[i], NULL); |
| } |
| |
| memset(&templ, 0, sizeof(templ)); |
| templ.target = screen->target; |
| templ.width0 = width; |
| templ.height0 = height; |
| templ.depth0 = 1; |
| templ.array_size = 1; |
| templ.last_level = 0; |
| |
| for (i = 0; i < count; i++) { |
| enum pipe_format format; |
| unsigned bind; |
| |
| /* the texture already exists or not requested */ |
| if (drawable->textures[statts[i]]) |
| continue; |
| |
| dri_drawable_get_format(drawable, statts[i], &format, &bind); |
| |
| /* if we don't do any present, no need for display targets */ |
| if (statts[i] != ST_ATTACHMENT_DEPTH_STENCIL && !swrast_no_present) |
| bind |= PIPE_BIND_DISPLAY_TARGET; |
| |
| if (format == PIPE_FORMAT_NONE) |
| continue; |
| |
| templ.format = format; |
| templ.bind = bind; |
| |
| drawable->textures[statts[i]] = |
| screen->base.screen->resource_create(screen->base.screen, &templ); |
| } |
| |
| drawable->old_w = width; |
| drawable->old_h = height; |
| } |
| |
| static void |
| drisw_update_tex_buffer(struct dri_drawable *drawable, |
| struct dri_context *ctx, |
| struct pipe_resource *res) |
| { |
| __DRIdrawable *dPriv = drawable->dPriv; |
| |
| struct st_context *st_ctx = (struct st_context *)ctx->st; |
| struct pipe_context *pipe = st_ctx->pipe; |
| struct pipe_transfer *transfer; |
| char *map; |
| int x, y, w, h; |
| int ximage_stride, line; |
| int cpp = util_format_get_blocksize(res->format); |
| |
| get_drawable_info(dPriv, &x, &y, &w, &h); |
| |
| transfer = pipe_get_transfer(pipe, res, |
| 0, 0, // level, layer, |
| PIPE_TRANSFER_WRITE, |
| x, y, w, h); |
| map = pipe_transfer_map(pipe, transfer); |
| |
| /* Copy the Drawable content to the mapped texture buffer */ |
| get_image(dPriv, x, y, w, h, map); |
| |
| /* The pipe transfer has a pitch rounded up to the nearest 64 pixels. */ |
| ximage_stride = w * cpp; |
| for (line = h-1; line; --line) { |
| memmove(&map[line * transfer->stride], |
| &map[line * ximage_stride], |
| ximage_stride); |
| } |
| |
| pipe_transfer_unmap(pipe, transfer); |
| pipe_transfer_destroy(pipe, transfer); |
| } |
| |
| /* |
| * Backend function for init_screen. |
| */ |
| |
| static const __DRIextension *drisw_screen_extensions[] = { |
| &driTexBufferExtension.base, |
| NULL |
| }; |
| |
| static struct drisw_loader_funcs drisw_lf = { |
| .put_image = drisw_put_image |
| }; |
| |
| static const __DRIconfig ** |
| drisw_init_screen(__DRIscreen * sPriv) |
| { |
| const __DRIconfig **configs; |
| struct dri_screen *screen; |
| struct pipe_screen *pscreen; |
| |
| screen = CALLOC_STRUCT(dri_screen); |
| if (!screen) |
| return NULL; |
| |
| screen->sPriv = sPriv; |
| screen->fd = -1; |
| |
| swrast_no_present = debug_get_option_swrast_no_present(); |
| |
| sPriv->driverPrivate = (void *)screen; |
| sPriv->extensions = drisw_screen_extensions; |
| |
| pscreen = drisw_create_screen(&drisw_lf); |
| /* dri_init_screen_helper checks pscreen for us */ |
| |
| configs = dri_init_screen_helper(screen, pscreen, 32); |
| if (!configs) |
| goto fail; |
| |
| return configs; |
| fail: |
| dri_destroy_screen_helper(screen); |
| FREE(screen); |
| return NULL; |
| } |
| |
| static boolean |
| drisw_create_buffer(__DRIscreen * sPriv, |
| __DRIdrawable * dPriv, |
| const struct gl_config * visual, boolean isPixmap) |
| { |
| struct dri_drawable *drawable = NULL; |
| |
| if (!dri_create_buffer(sPriv, dPriv, visual, isPixmap)) |
| return FALSE; |
| |
| drawable = dPriv->driverPrivate; |
| |
| drawable->allocate_textures = drisw_allocate_textures; |
| drawable->update_drawable_info = drisw_update_drawable_info; |
| drawable->flush_frontbuffer = drisw_flush_frontbuffer; |
| drawable->update_tex_buffer = drisw_update_tex_buffer; |
| |
| return TRUE; |
| } |
| |
| /** |
| * DRI driver virtual function table. |
| * |
| * DRI versions differ in their implementation of init_screen and swap_buffers. |
| */ |
| const struct __DriverAPIRec driDriverAPI = { |
| .InitScreen = drisw_init_screen, |
| .DestroyScreen = dri_destroy_screen, |
| .CreateContext = dri_create_context, |
| .DestroyContext = dri_destroy_context, |
| .CreateBuffer = drisw_create_buffer, |
| .DestroyBuffer = dri_destroy_buffer, |
| .SwapBuffers = drisw_swap_buffers, |
| .MakeCurrent = dri_make_current, |
| .UnbindContext = dri_unbind_context, |
| }; |
| |
| /* This is the table of extensions that the loader will dlsym() for. */ |
| PUBLIC const __DRIextension *__driDriverExtensions[] = { |
| &driCoreExtension.base, |
| &driSWRastExtension.base, |
| NULL |
| }; |
| |
| /* vim: set sw=3 ts=8 sts=3 expandtab: */ |