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|
/**************************************************************************
*
* Copyright 2009, 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, 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.
*
**************************************************************************/
/*
* Author: Keith Whitwell <keithw@vmware.com>
* Author: Jakob Bornecrantz <wallbraker@gmail.com>
*/
/* XXX DRI1 is untested after the switch to st_api.h */
#include "util/u_memory.h"
#include "util/u_rect.h"
#include "util/u_inlines.h"
#include "pipe/p_context.h"
#include "state_tracker/dri1_api.h"
#include "dri_screen.h"
#include "dri_context.h"
#include "dri_drawable.h"
#include "dri_st_api.h"
#include "dri1_helper.h"
#include "dri1.h"
static INLINE void
dri1_lock(struct dri_context *ctx)
{
drm_context_t hw_context = ctx->cPriv->hHWContext;
char ret = 0;
DRM_CAS(ctx->lock, hw_context, DRM_LOCK_HELD | hw_context, ret);
if (ret) {
drmGetLock(ctx->sPriv->fd, hw_context, 0);
ctx->stLostLock = TRUE;
ctx->wsLostLock = TRUE;
}
ctx->isLocked = TRUE;
}
static INLINE void
dri1_unlock(struct dri_context *ctx)
{
ctx->isLocked = FALSE;
DRM_UNLOCK(ctx->sPriv->fd, ctx->lock, ctx->cPriv->hHWContext);
}
static void
dri1_update_drawables_locked(struct dri_context *ctx,
__DRIdrawable * driDrawPriv,
__DRIdrawable * driReadPriv)
{
if (ctx->stLostLock) {
ctx->stLostLock = FALSE;
if (driDrawPriv == driReadPriv)
DRI_VALIDATE_DRAWABLE_INFO(ctx->sPriv, driDrawPriv);
else
DRI_VALIDATE_TWO_DRAWABLES_INFO(ctx->sPriv, driDrawPriv,
driReadPriv);
}
}
/**
* This ensures all contexts which bind to a drawable pick up the
* drawable change and signal new buffer state.
*/
static void
dri1_propagate_drawable_change(struct dri_context *ctx)
{
__DRIdrawable *dPriv = ctx->dPriv;
__DRIdrawable *rPriv = ctx->rPriv;
struct dri_drawable *draw = dri_drawable(dPriv);
struct dri_drawable *read = dri_drawable(rPriv);
boolean flushed = FALSE;
if (dPriv && draw->texture_stamp != dPriv->lastStamp) {
ctx->st->flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
flushed = TRUE;
ctx->st->notify_invalid_framebuffer(ctx->st, draw->stfb);
}
if (rPriv && dPriv != rPriv && read->texture_stamp != rPriv->lastStamp) {
if (!flushed)
ctx->st->flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
ctx->st->notify_invalid_framebuffer(ctx->st, read->stfb);
}
}
static INLINE boolean
dri1_intersect_src_bbox(struct drm_clip_rect *dst,
int dst_x,
int dst_y,
const struct drm_clip_rect *src,
const struct drm_clip_rect *bbox)
{
int xy1;
int xy2;
xy1 = ((int)src->x1 > (int)bbox->x1 + dst_x) ? src->x1 :
(int)bbox->x1 + dst_x;
xy2 = ((int)src->x2 < (int)bbox->x2 + dst_x) ? src->x2 :
(int)bbox->x2 + dst_x;
if (xy1 >= xy2 || xy1 < 0)
return FALSE;
dst->x1 = xy1;
dst->x2 = xy2;
xy1 = ((int)src->y1 > (int)bbox->y1 + dst_y) ? src->y1 :
(int)bbox->y1 + dst_y;
xy2 = ((int)src->y2 < (int)bbox->y2 + dst_y) ? src->y2 :
(int)bbox->y2 + dst_y;
if (xy1 >= xy2 || xy1 < 0)
return FALSE;
dst->y1 = xy1;
dst->y2 = xy2;
return TRUE;
}
static void
dri1_swap_copy(struct pipe_context *pipe,
struct pipe_surface *dst,
struct pipe_surface *src,
__DRIdrawable * dPriv, const struct drm_clip_rect *bbox)
{
struct drm_clip_rect clip;
struct drm_clip_rect *cur;
int i;
cur = dPriv->pClipRects;
for (i = 0; i < dPriv->numClipRects; ++i) {
if (dri1_intersect_src_bbox(&clip, dPriv->x, dPriv->y, cur++, bbox)) {
if (pipe->surface_copy) {
pipe->surface_copy(pipe, dst, clip.x1, clip.y1,
src,
(int)clip.x1 - dPriv->x,
(int)clip.y1 - dPriv->y,
clip.x2 - clip.x1, clip.y2 - clip.y1);
} else {
util_surface_copy(pipe, FALSE, dst, clip.x1, clip.y1,
src,
(int)clip.x1 - dPriv->x,
(int)clip.y1 - dPriv->y,
clip.x2 - clip.x1, clip.y2 - clip.y1);
}
}
}
}
static void
dri1_present_texture_locked(__DRIdrawable * dPriv,
struct pipe_texture *ptex,
const struct drm_clip_rect *sub_box,
struct pipe_fence_handle **fence)
{
struct dri_drawable *drawable = dri_drawable(dPriv);
struct dri_screen *screen = dri_screen(drawable->sPriv);
struct pipe_context *pipe;
struct pipe_surface *psurf;
struct drm_clip_rect bbox;
boolean visible = TRUE;
*fence = NULL;
bbox.x1 = 0;
bbox.x2 = ptex->width0;
bbox.y1 = 0;
bbox.y2 = ptex->height0;
if (sub_box)
visible = dri1_intersect_src_bbox(&bbox, 0, 0, &bbox, sub_box);
if (!visible)
return;
pipe = dri1_get_pipe_context(screen);
psurf = dri1_get_pipe_surface(drawable, ptex);
if (!pipe || !psurf)
return;
if (__dri1_api_hooks->present_locked) {
__dri1_api_hooks->present_locked(pipe, psurf,
dPriv->pClipRects, dPriv->numClipRects,
dPriv->x, dPriv->y, &bbox, fence);
} else if (__dri1_api_hooks->front_srf_locked) {
struct pipe_surface *front = __dri1_api_hooks->front_srf_locked(pipe);
if (front)
dri1_swap_copy(pipe, front, psurf, dPriv, &bbox);
pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, fence);
}
}
static void
dri1_copy_to_front(struct dri_context *ctx,
struct pipe_texture *ptex,
__DRIdrawable * dPriv,
const struct drm_clip_rect *sub_box,
struct pipe_fence_handle **fence)
{
boolean save_lost_lock;
dri1_lock(ctx);
save_lost_lock = ctx->stLostLock;
dri1_update_drawables_locked(ctx, dPriv, dPriv);
dri1_present_texture_locked(dPriv, ptex, sub_box, fence);
ctx->stLostLock = save_lost_lock;
/**
* FIXME: Revisit this: Update drawables on copy_sub_buffer ?
*/
if (!sub_box)
dri1_update_drawables_locked(ctx, ctx->dPriv, ctx->rPriv);
dri1_unlock(ctx);
dri1_propagate_drawable_change(ctx);
}
/*
* Backend functions for st_framebuffer interface and swap_buffers.
*/
void
dri1_flush_frontbuffer(struct dri_drawable *draw,
enum st_attachment_type statt)
{
struct dri_context *ctx = dri_get_current();
struct dri_screen *screen = dri_screen(draw->sPriv);
struct pipe_screen *pipe_screen = screen->pipe_screen;
struct pipe_fence_handle *dummy_fence;
struct pipe_texture *ptex;
if (!ctx)
return; /* For now */
ptex = draw->textures[statt];
if (ptex) {
dri1_copy_to_front(ctx, ptex, ctx->dPriv, NULL, &dummy_fence);
pipe_screen->fence_reference(pipe_screen, &dummy_fence, NULL);
}
/**
* FIXME: Do we need swap throttling here?
*/
}
void
dri1_swap_buffers(__DRIdrawable * dPriv)
{
struct dri_context *ctx = dri_get_current();
struct dri_drawable *draw = dri_drawable(dPriv);
struct dri_screen *screen = dri_screen(draw->sPriv);
struct pipe_screen *pipe_screen = screen->pipe_screen;
struct pipe_fence_handle *fence;
struct pipe_texture *ptex;
assert(__dri1_api_hooks != NULL);
if (!ctx)
return; /* For now */
ptex = draw->textures[ST_ATTACHMENT_BACK_LEFT];
if (ptex) {
ctx->st->flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
fence = dri1_swap_fences_pop_front(draw);
if (fence) {
(void)pipe_screen->fence_finish(pipe_screen, fence, 0);
pipe_screen->fence_reference(pipe_screen, &fence, NULL);
}
dri1_copy_to_front(ctx, ptex, dPriv, NULL, &fence);
dri1_swap_fences_push_back(draw, fence);
pipe_screen->fence_reference(pipe_screen, &fence, NULL);
}
}
void
dri1_copy_sub_buffer(__DRIdrawable * dPriv, int x, int y, int w, int h)
{
struct dri_context *ctx = dri_get_current();
struct dri_screen *screen = dri_screen(dPriv->driScreenPriv);
struct pipe_screen *pipe_screen = screen->pipe_screen;
struct drm_clip_rect sub_bbox;
struct dri_drawable *draw = dri_drawable(dPriv);
struct pipe_fence_handle *dummy_fence;
struct pipe_texture *ptex;
assert(__dri1_api_hooks != NULL);
if (!ctx)
return;
sub_bbox.x1 = x;
sub_bbox.x2 = x + w;
sub_bbox.y1 = y;
sub_bbox.y2 = y + h;
ptex = draw->textures[ST_ATTACHMENT_BACK_LEFT];
if (ptex) {
ctx->st->flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
dri1_copy_to_front(ctx, ptex, dPriv, &sub_bbox, &dummy_fence);
pipe_screen->fence_reference(pipe_screen, &dummy_fence, NULL);
}
}
/**
* 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.
*/
void
dri1_allocate_textures(struct dri_drawable *drawable,
unsigned mask)
{
struct dri_screen *screen = dri_screen(drawable->sPriv);
struct pipe_texture templ;
unsigned width, height;
boolean resized;
int 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_texture_reference(&drawable->textures[i], NULL);
}
memset(&templ, 0, sizeof(templ));
templ.target = PIPE_TEXTURE_2D;
templ.width0 = width;
templ.height0 = height;
templ.depth0 = 1;
templ.last_level = 0;
for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
enum pipe_format format;
unsigned tex_usage;
/* the texture already exists or not requested */
if (drawable->textures[i] || !(mask & (1 << i))) {
continue;
}
switch (i) {
case ST_ATTACHMENT_FRONT_LEFT:
case ST_ATTACHMENT_BACK_LEFT:
case ST_ATTACHMENT_FRONT_RIGHT:
case ST_ATTACHMENT_BACK_RIGHT:
format = drawable->stvis.color_format;
tex_usage = PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
PIPE_TEXTURE_USAGE_RENDER_TARGET;
break;
case ST_ATTACHMENT_DEPTH_STENCIL:
format = drawable->stvis.depth_stencil_format;
tex_usage = PIPE_TEXTURE_USAGE_DEPTH_STENCIL;
break;
default:
format = PIPE_FORMAT_NONE;
break;
}
if (format != PIPE_FORMAT_NONE) {
templ.format = format;
templ.tex_usage = tex_usage;
drawable->textures[i] =
screen->pipe_screen->texture_create(screen->pipe_screen, &templ);
}
}
drawable->old_w = width;
drawable->old_h = height;
}
static void
st_dri_lock(struct pipe_context *pipe)
{
dri1_lock((struct dri_context *)pipe->priv);
}
static void
st_dri_unlock(struct pipe_context *pipe)
{
dri1_unlock((struct dri_context *)pipe->priv);
}
static boolean
st_dri_is_locked(struct pipe_context *pipe)
{
return ((struct dri_context *)pipe->priv)->isLocked;
}
static boolean
st_dri_lost_lock(struct pipe_context *pipe)
{
return ((struct dri_context *)pipe->priv)->wsLostLock;
}
static void
st_dri_clear_lost_lock(struct pipe_context *pipe)
{
((struct dri_context *)pipe->priv)->wsLostLock = FALSE;
}
static struct dri1_api_lock_funcs dri1_lf = {
.lock = st_dri_lock,
.unlock = st_dri_unlock,
.is_locked = st_dri_is_locked,
.is_lock_lost = st_dri_lost_lock,
.clear_lost_lock = st_dri_clear_lost_lock
};
/*
* Backend function for init_screen.
*/
static const __DRIextension *dri1_screen_extensions[] = {
&driReadDrawableExtension,
&driCopySubBufferExtension.base,
&driSwapControlExtension.base,
&driFrameTrackingExtension.base,
&driMediaStreamCounterExtension.base,
NULL
};
struct dri1_api *__dri1_api_hooks = NULL;
static INLINE void
dri1_copy_version(struct dri1_api_version *dst,
const struct __DRIversionRec *src)
{
dst->major = src->major;
dst->minor = src->minor;
dst->patch_level = src->patch;
}
const __DRIconfig **
dri1_init_screen(__DRIscreen * sPriv)
{
const __DRIconfig **configs;
struct dri_screen *screen;
struct dri1_create_screen_arg arg;
screen = CALLOC_STRUCT(dri_screen);
if (!screen)
return NULL;
screen->api = drm_api_create();
screen->sPriv = sPriv;
screen->fd = sPriv->fd;
screen->drmLock = (drmLock *) & sPriv->pSAREA->lock;
sPriv->private = (void *)screen;
sPriv->extensions = dri1_screen_extensions;
arg.base.mode = DRM_CREATE_DRI1;
arg.lf = &dri1_lf;
arg.ddx_info = sPriv->pDevPriv;
arg.ddx_info_size = sPriv->devPrivSize;
arg.sarea = sPriv->pSAREA;
dri1_copy_version(&arg.ddx_version, &sPriv->ddx_version);
dri1_copy_version(&arg.dri_version, &sPriv->dri_version);
dri1_copy_version(&arg.drm_version, &sPriv->drm_version);
arg.api = NULL;
/**
* FIXME: If the driver supports format conversion swapbuffer blits, we might
* want to support other color bit depths than the server is currently
* using.
*/
configs = dri_init_screen_helper(screen, &arg.base, sPriv->fbBPP);
if (!configs)
goto fail;
if (!arg.api) {
debug_printf("%s: failed to create dri1 screen\n", __FUNCTION__);
goto fail;
}
__dri1_api_hooks = arg.api;
return configs;
fail:
dri_destroy_screen_helper(screen);
FREE(screen);
return NULL;
}
|