/**************************************************************************
*
* 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_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
};
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);
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: */