diff options
Diffstat (limited to 'src/gallium/state_trackers/dri/drisw.c')
| -rw-r--r-- | src/gallium/state_trackers/dri/drisw.c | 422 |
1 files changed, 422 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/dri/drisw.c b/src/gallium/state_trackers/dri/drisw.c new file mode 100644 index 00000000000..607d22297fe --- /dev/null +++ b/src/gallium/state_trackers/dri/drisw.c @@ -0,0 +1,422 @@ +/************************************************************************** + * + * Copyright 2009, VMware, Inc. + * All Rights Reserved. + * Copyright 2010 George Sapountzis <[email protected]> + * + * 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 "util/u_box.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 +put_image2(__DRIdrawable *dPriv, void *data, int x, int y, + unsigned width, unsigned height, unsigned stride) +{ + __DRIscreen *sPriv = dPriv->driScreenPriv; + const __DRIswrastLoaderExtension *loader = sPriv->swrast_loader; + + loader->putImage2(dPriv, __DRI_SWRAST_IMAGE_OP_SWAP, + x, y, width, height, stride, + 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 void +drisw_put_image2(struct dri_drawable *drawable, + void *data, int x, int y, unsigned width, unsigned height, + unsigned stride) +{ + __DRIdrawable *dPriv = drawable->dPriv; + + put_image2(dPriv, data, x, y, width, height, stride); +} + +static INLINE void +drisw_present_texture(__DRIdrawable *dPriv, + struct pipe_resource *ptex, struct pipe_box *sub_box) +{ + 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, sub_box); +} + +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, NULL); + + 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_copy_sub_buffer(__DRIdrawable *dPriv, int x, int y, + int w, int h) +{ + struct dri_context *ctx = dri_get_current(dPriv->driScreenPriv); + struct dri_drawable *drawable = dri_drawable(dPriv); + struct pipe_resource *ptex; + struct pipe_box box; + 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); + + u_box_2d(x, dPriv->h - y - h, w, h, &box); + drisw_present_texture(dPriv, ptex, &box); + } +} + +static void +drisw_flush_frontbuffer(struct dri_context *ctx, + struct dri_drawable *drawable, + enum st_attachment_type statt) +{ + 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_context *stctx, + 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); + + map = pipe_transfer_map(pipe, res, + 0, 0, // level, layer, + PIPE_TRANSFER_WRITE, + x, y, w, h, &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. + get_image() has a pitch rounded up to 4 bytes. */ + ximage_stride = ((w * cpp) + 3) & -4; + for (line = h-1; line; --line) { + memmove(&map[line * transfer->stride], + &map[line * ximage_stride], + ximage_stride); + } + + pipe_transfer_unmap(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, + .put_image2 = drisw_put_image2 +}; + +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, "swrast"); + 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 galliumsw_driver_api = { + .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, + .CopySubBuffer = drisw_copy_sub_buffer, +}; + +/* This is the table of extensions that the loader will dlsym() for. */ +const __DRIextension *galliumsw_driver_extensions[] = { + &driCoreExtension.base, + &driSWRastExtension.base, + &driCopySubBufferExtension.base, + &gallium_config_options.base, + NULL +}; + +/* vim: set sw=3 ts=8 sts=3 expandtab: */ |