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/*
* Mesa 3-D graphics library
* Version: 7.9
*
* Copyright (C) 2010 LunarG Inc.
* Copyright (C) 2011 VMware Inc. All rights reserved.
*
* 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>
* Thomas Hellstrom <thellstrom@vmware.com>
*/
#include "util/u_inlines.h"
#include "util/u_memory.h"
#include "pipe/p_screen.h"
#include "pipe/p_context.h"
#include "pipe/p_state.h"
#include "native_helper.h"
/**
* Number of swap fences and mask
*/
#define EGL_SWAP_FENCES_MAX 4
#define EGL_SWAP_FENCES_MASK 3
#define EGL_SWAP_FENCES_DEFAULT 1
struct resource_surface {
struct pipe_screen *screen;
enum pipe_format format;
uint bind;
struct pipe_resource *resources[NUM_NATIVE_ATTACHMENTS];
uint resource_mask;
uint width, height;
/**
* Swap fences.
*/
struct pipe_fence_handle *swap_fences[EGL_SWAP_FENCES_MAX];
unsigned int cur_fences;
unsigned int head;
unsigned int tail;
unsigned int desired_fences;
};
struct resource_surface *
resource_surface_create(struct pipe_screen *screen,
enum pipe_format format, uint bind)
{
struct resource_surface *rsurf = CALLOC_STRUCT(resource_surface);
char *swap_fences = getenv("EGL_THROTTLE_FENCES");
if (rsurf) {
rsurf->screen = screen;
rsurf->format = format;
rsurf->bind = bind;
rsurf->desired_fences = (swap_fences) ? atoi(swap_fences) :
EGL_SWAP_FENCES_DEFAULT;
if (rsurf->desired_fences > EGL_SWAP_FENCES_MAX)
rsurf->desired_fences = EGL_SWAP_FENCES_MAX;
}
return rsurf;
}
static void
resource_surface_free_resources(struct resource_surface *rsurf)
{
if (rsurf->resource_mask) {
int i;
for (i = 0; i < NUM_NATIVE_ATTACHMENTS; i++) {
if (rsurf->resources[i])
pipe_resource_reference(&rsurf->resources[i], NULL);
}
rsurf->resource_mask = 0x0;
}
}
void
resource_surface_destroy(struct resource_surface *rsurf)
{
resource_surface_free_resources(rsurf);
FREE(rsurf);
}
boolean
resource_surface_set_size(struct resource_surface *rsurf,
uint width, uint height)
{
boolean changed = FALSE;
if (rsurf->width != width || rsurf->height != height) {
resource_surface_free_resources(rsurf);
rsurf->width = width;
rsurf->height = height;
changed = TRUE;
}
return changed;
}
void
resource_surface_get_size(struct resource_surface *rsurf,
uint *width, uint *height)
{
if (width)
*width = rsurf->width;
if (height)
*height = rsurf->height;
}
boolean
resource_surface_add_resources(struct resource_surface *rsurf,
uint resource_mask)
{
struct pipe_resource templ;
int i;
resource_mask &= ~rsurf->resource_mask;
if (!resource_mask)
return TRUE;
if (!rsurf->width || !rsurf->height)
return FALSE;
memset(&templ, 0, sizeof(templ));
templ.target = PIPE_TEXTURE_2D;
templ.format = rsurf->format;
templ.bind = rsurf->bind;
templ.width0 = rsurf->width;
templ.height0 = rsurf->height;
templ.depth0 = 1;
templ.array_size = 1;
for (i = 0; i < NUM_NATIVE_ATTACHMENTS; i++) {
if (resource_mask & (1 <<i)) {
assert(!rsurf->resources[i]);
rsurf->resources[i] =
rsurf->screen->resource_create(rsurf->screen, &templ);
if (rsurf->resources[i])
rsurf->resource_mask |= 1 << i;
}
}
return ((rsurf->resource_mask & resource_mask) == resource_mask);
}
void
resource_surface_import_resource(struct resource_surface *rsurf,
enum native_attachment which,
struct pipe_resource *pres)
{
pipe_resource_reference(&rsurf->resources[which], pres);
rsurf->resource_mask |= 1 << which;
}
void
resource_surface_get_resources(struct resource_surface *rsurf,
struct pipe_resource **resources,
uint resource_mask)
{
int i;
for (i = 0; i < NUM_NATIVE_ATTACHMENTS; i++) {
if (resource_mask & (1 << i)) {
resources[i] = NULL;
pipe_resource_reference(&resources[i], rsurf->resources[i]);
}
}
}
struct pipe_resource *
resource_surface_get_single_resource(struct resource_surface *rsurf,
enum native_attachment which)
{
struct pipe_resource *pres = NULL;
pipe_resource_reference(&pres, rsurf->resources[which]);
return pres;
}
static INLINE void
pointer_swap(const void **p1, const void **p2)
{
const void *tmp = *p1;
*p1 = *p2;
*p2 = tmp;
}
void
resource_surface_swap_buffers(struct resource_surface *rsurf,
enum native_attachment buf1,
enum native_attachment buf2,
boolean only_if_exist)
{
const uint buf1_bit = 1 << buf1;
const uint buf2_bit = 1 << buf2;
uint mask;
if (only_if_exist && !(rsurf->resources[buf1] && rsurf->resources[buf2]))
return;
pointer_swap((const void **) &rsurf->resources[buf1],
(const void **) &rsurf->resources[buf2]);
/* swap mask bits */
mask = rsurf->resource_mask & ~(buf1_bit | buf2_bit);
if (rsurf->resource_mask & buf1_bit)
mask |= buf2_bit;
if (rsurf->resource_mask & buf2_bit)
mask |= buf1_bit;
rsurf->resource_mask = mask;
}
boolean
resource_surface_present(struct resource_surface *rsurf,
enum native_attachment which,
void *winsys_drawable_handle)
{
struct pipe_resource *pres = rsurf->resources[which];
if (!pres)
return TRUE;
rsurf->screen->flush_frontbuffer(rsurf->screen,
pres, 0, 0, winsys_drawable_handle);
return TRUE;
}
/**
* Schedule a copy swap from the back to the front buffer using the
* native display's copy context.
*/
boolean
resource_surface_copy_swap(struct resource_surface *rsurf,
struct native_display *ndpy)
{
struct pipe_resource *ftex;
struct pipe_resource *btex;
struct pipe_context *pipe;
struct pipe_box src_box;
boolean ret = FALSE;
pipe = ndpy_get_copy_context(ndpy);
if (!pipe)
return FALSE;
ftex = resource_surface_get_single_resource(rsurf,
NATIVE_ATTACHMENT_FRONT_LEFT);
if (!ftex)
goto out_no_ftex;
btex = resource_surface_get_single_resource(rsurf,
NATIVE_ATTACHMENT_BACK_LEFT);
if (!btex)
goto out_no_btex;
u_box_origin_2d(ftex->width0, ftex->height0, &src_box);
pipe->resource_copy_region(pipe, ftex, 0, 0, 0, 0,
btex, 0, &src_box);
ret = TRUE;
out_no_btex:
pipe_resource_reference(&btex, NULL);
out_no_ftex:
pipe_resource_reference(&ftex, NULL);
return ret;
}
static struct pipe_fence_handle *
swap_fences_pop_front(struct resource_surface *rsurf)
{
struct pipe_screen *screen = rsurf->screen;
struct pipe_fence_handle *fence = NULL;
if (rsurf->desired_fences == 0)
return NULL;
if (rsurf->cur_fences >= rsurf->desired_fences) {
screen->fence_reference(screen, &fence, rsurf->swap_fences[rsurf->tail]);
screen->fence_reference(screen, &rsurf->swap_fences[rsurf->tail++], NULL);
rsurf->tail &= EGL_SWAP_FENCES_MASK;
--rsurf->cur_fences;
}
return fence;
}
static void
swap_fences_push_back(struct resource_surface *rsurf,
struct pipe_fence_handle *fence)
{
struct pipe_screen *screen = rsurf->screen;
if (!fence || rsurf->desired_fences == 0)
return;
while(rsurf->cur_fences == rsurf->desired_fences)
swap_fences_pop_front(rsurf);
rsurf->cur_fences++;
screen->fence_reference(screen, &rsurf->swap_fences[rsurf->head++],
fence);
rsurf->head &= EGL_SWAP_FENCES_MASK;
}
boolean
resource_surface_throttle(struct resource_surface *rsurf)
{
struct pipe_screen *screen = rsurf->screen;
struct pipe_fence_handle *fence = swap_fences_pop_front(rsurf);
if (fence) {
(void) screen->fence_finish(screen, fence, PIPE_TIMEOUT_INFINITE);
screen->fence_reference(screen, &fence, NULL);
return TRUE;
}
return FALSE;
}
boolean
resource_surface_flush(struct resource_surface *rsurf,
struct native_display *ndpy)
{
struct pipe_fence_handle *fence = NULL;
struct pipe_screen *screen = rsurf->screen;
struct pipe_context *pipe= ndpy_get_copy_context(ndpy);
if (!pipe)
return FALSE;
pipe->flush(pipe, &fence);
if (fence == NULL)
return FALSE;
swap_fences_push_back(rsurf, fence);
screen->fence_reference(screen, &fence, NULL);
return TRUE;
}
void
resource_surface_wait(struct resource_surface *rsurf)
{
while (resource_surface_throttle(rsurf));
}
boolean
native_display_copy_to_pixmap(struct native_display *ndpy,
EGLNativePixmapType pix,
struct pipe_resource *src)
{
struct pipe_context *pipe;
struct native_surface *nsurf;
struct pipe_resource *dst;
struct pipe_resource *tmp[NUM_NATIVE_ATTACHMENTS];
const enum native_attachment natt = NATIVE_ATTACHMENT_FRONT_LEFT;
pipe = ndpy_get_copy_context(ndpy);
if (!pipe)
return FALSE;
nsurf = ndpy->create_pixmap_surface(ndpy, pix, NULL);
if (!nsurf)
return FALSE;
/* get the texutre */
tmp[natt] = NULL;
nsurf->validate(nsurf, 1 << natt, NULL, tmp, NULL, NULL);
dst = tmp[natt];
if (dst && dst->format == src->format) {
struct pipe_box src_box;
u_box_origin_2d(src->width0, src->height0, &src_box);
pipe->resource_copy_region(pipe, dst, 0, 0, 0, 0, src, 0, &src_box);
pipe->flush(pipe, NULL);
nsurf->present(nsurf, natt, FALSE, 0);
}
if (dst)
pipe_resource_reference(&dst, NULL);
nsurf->destroy(nsurf);
return TRUE;
}
#include "state_tracker/drm_driver.h"
struct pipe_resource *
drm_display_import_native_buffer(struct native_display *ndpy,
struct native_buffer *nbuf)
{
struct pipe_screen *screen = ndpy->screen;
struct pipe_resource *res = NULL;
switch (nbuf->type) {
case NATIVE_BUFFER_DRM:
{
struct winsys_handle wsh;
memset(&wsh, 0, sizeof(wsh));
wsh.handle = nbuf->u.drm.name;
wsh.stride = nbuf->u.drm.stride;
res = screen->resource_from_handle(screen, &nbuf->u.drm.templ, &wsh);
}
break;
default:
break;
}
return res;
}
boolean
drm_display_export_native_buffer(struct native_display *ndpy,
struct pipe_resource *res,
struct native_buffer *nbuf)
{
struct pipe_screen *screen = ndpy->screen;
boolean ret = FALSE;
switch (nbuf->type) {
case NATIVE_BUFFER_DRM:
{
struct winsys_handle wsh;
if ((nbuf->u.drm.templ.bind & res->bind) != nbuf->u.drm.templ.bind)
break;
memset(&wsh, 0, sizeof(wsh));
wsh.type = DRM_API_HANDLE_TYPE_KMS;
if (!screen->resource_get_handle(screen, res, &wsh))
break;
nbuf->u.drm.handle = wsh.handle;
nbuf->u.drm.stride = wsh.stride;
/* get the name of the GEM object */
if (nbuf->u.drm.templ.bind & PIPE_BIND_SHARED) {
memset(&wsh, 0, sizeof(wsh));
wsh.type = DRM_API_HANDLE_TYPE_SHARED;
if (!screen->resource_get_handle(screen, res, &wsh))
break;
nbuf->u.drm.name = wsh.handle;
}
nbuf->u.drm.templ = *res;
ret = TRUE;
}
break;
default:
break;
}
return ret;
}
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