/**************************************************************************
*
* 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>
*/
#include "dri_screen.h"
#include "dri_context.h"
#include "dri_drawable.h"
#include "pipe/p_screen.h"
#include "util/u_format.h"
#include "util/u_memory.h"
#include "util/u_inlines.h"
static void
swap_fences_unref(struct dri_drawable *draw);
static boolean
dri_st_framebuffer_validate(struct st_context_iface *stctx,
struct st_framebuffer_iface *stfbi,
const enum st_attachment_type *statts,
unsigned count,
struct pipe_resource **out)
{
struct dri_context *ctx = (struct dri_context *)stctx->st_manager_private;
struct dri_drawable *drawable =
(struct dri_drawable *) stfbi->st_manager_private;
struct dri_screen *screen = dri_screen(drawable->sPriv);
unsigned statt_mask, new_mask;
boolean new_stamp;
int i;
unsigned int lastStamp;
struct pipe_resource **textures =
drawable->stvis.samples > 1 ? drawable->msaa_textures
: drawable->textures;
statt_mask = 0x0;
for (i = 0; i < count; i++)
statt_mask |= (1 << statts[i]);
/* record newly allocated textures */
new_mask = (statt_mask & ~drawable->texture_mask);
/*
* dPriv->dri2.stamp is the server stamp. dPriv->lastStamp is the
* client stamp. It has the value of the server stamp when last
* checked.
*/
do {
lastStamp = drawable->dPriv->lastStamp;
new_stamp = (drawable->texture_stamp != lastStamp);
if (new_stamp || new_mask || screen->broken_invalidate) {
if (new_stamp && drawable->update_drawable_info)
drawable->update_drawable_info(drawable);
drawable->allocate_textures(ctx, drawable, statts, count);
/* add existing textures */
for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
if (textures[i])
statt_mask |= (1 << i);
}
drawable->texture_stamp = lastStamp;
drawable->texture_mask = statt_mask;
}
} while (lastStamp != drawable->dPriv->lastStamp);
if (!out)
return TRUE;
/* Set the window-system buffers for the state tracker. */
for (i = 0; i < count; i++) {
out[i] = NULL;
pipe_resource_reference(&out[i], textures[statts[i]]);
}
return TRUE;
}
static boolean
dri_st_framebuffer_flush_front(struct st_context_iface *stctx,
struct st_framebuffer_iface *stfbi,
enum st_attachment_type statt)
{
struct dri_context *ctx = (struct dri_context *)stctx->st_manager_private;
struct dri_drawable *drawable =
(struct dri_drawable *) stfbi->st_manager_private;
/* XXX remove this and just set the correct one on the framebuffer */
drawable->flush_frontbuffer(ctx, drawable, statt);
return TRUE;
}
/**
* This is called when we need to set up GL rendering to a new X window.
*/
boolean
dri_create_buffer(__DRIscreen * sPriv,
__DRIdrawable * dPriv,
const struct gl_config * visual, boolean isPixmap)
{
struct dri_screen *screen = sPriv->driverPrivate;
struct dri_drawable *drawable = NULL;
if (isPixmap)
goto fail; /* not implemented */
drawable = CALLOC_STRUCT(dri_drawable);
if (drawable == NULL)
goto fail;
dri_fill_st_visual(&drawable->stvis, screen, visual);
/* setup the st_framebuffer_iface */
drawable->base.visual = &drawable->stvis;
drawable->base.flush_front = dri_st_framebuffer_flush_front;
drawable->base.validate = dri_st_framebuffer_validate;
drawable->base.st_manager_private = (void *) drawable;
drawable->screen = screen;
drawable->sPriv = sPriv;
drawable->dPriv = dPriv;
drawable->desired_fences = screen->default_throttle_frames;
if (drawable->desired_fences > DRI_SWAP_FENCES_MAX)
drawable->desired_fences = DRI_SWAP_FENCES_MAX;
dPriv->driverPrivate = (void *)drawable;
p_atomic_set(&drawable->base.stamp, 1);
return GL_TRUE;
fail:
FREE(drawable);
return GL_FALSE;
}
void
dri_destroy_buffer(__DRIdrawable * dPriv)
{
struct dri_drawable *drawable = dri_drawable(dPriv);
int i;
pipe_surface_reference(&drawable->drisw_surface, NULL);
for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
pipe_resource_reference(&drawable->textures[i], NULL);
for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
pipe_resource_reference(&drawable->msaa_textures[i], NULL);
swap_fences_unref(drawable);
FREE(drawable);
}
/**
* Validate the texture at an attachment. Allocate the texture if it does not
* exist. Used by the TFP extension.
*/
static void
dri_drawable_validate_att(struct dri_context *ctx,
struct dri_drawable *drawable,
enum st_attachment_type statt)
{
enum st_attachment_type statts[ST_ATTACHMENT_COUNT];
unsigned i, count = 0;
/* check if buffer already exists */
if (drawable->texture_mask & (1 << statt))
return;
/* make sure DRI2 does not destroy existing buffers */
for (i = 0; i < ST_ATTACHMENT_COUNT; i++) {
if (drawable->texture_mask & (1 << i)) {
statts[count++] = i;
}
}
statts[count++] = statt;
drawable->texture_stamp = drawable->dPriv->lastStamp - 1;
drawable->base.validate(ctx->st, &drawable->base, statts, count, NULL);
}
/**
* These are used for GLX_EXT_texture_from_pixmap
*/
static void
dri_set_tex_buffer2(__DRIcontext *pDRICtx, GLint target,
GLint format, __DRIdrawable *dPriv)
{
struct dri_context *ctx = dri_context(pDRICtx);
struct dri_drawable *drawable = dri_drawable(dPriv);
struct pipe_resource *pt;
dri_drawable_validate_att(ctx, drawable, ST_ATTACHMENT_FRONT_LEFT);
/* Use the pipe resource associated with the X drawable */
pt = drawable->textures[ST_ATTACHMENT_FRONT_LEFT];
if (pt) {
enum pipe_format internal_format = pt->format;
if (format == __DRI_TEXTURE_FORMAT_RGB) {
/* only need to cover the formats recognized by dri_fill_st_visual */
switch (internal_format) {
case PIPE_FORMAT_B8G8R8A8_UNORM:
internal_format = PIPE_FORMAT_B8G8R8X8_UNORM;
break;
case PIPE_FORMAT_A8R8G8B8_UNORM:
internal_format = PIPE_FORMAT_X8R8G8B8_UNORM;
break;
default:
break;
}
}
drawable->update_tex_buffer(drawable, ctx, pt);
ctx->st->teximage(ctx->st,
(target == GL_TEXTURE_2D) ? ST_TEXTURE_2D : ST_TEXTURE_RECT,
0, internal_format, pt, FALSE);
}
}
static void
dri_set_tex_buffer(__DRIcontext *pDRICtx, GLint target,
__DRIdrawable *dPriv)
{
dri_set_tex_buffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
}
const __DRItexBufferExtension driTexBufferExtension = {
{ __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
dri_set_tex_buffer,
dri_set_tex_buffer2,
NULL,
};
/**
* Get the format and binding of an attachment.
*/
void
dri_drawable_get_format(struct dri_drawable *drawable,
enum st_attachment_type statt,
enum pipe_format *format,
unsigned *bind)
{
switch (statt) {
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;
*bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
break;
case ST_ATTACHMENT_DEPTH_STENCIL:
*format = drawable->stvis.depth_stencil_format;
*bind = PIPE_BIND_DEPTH_STENCIL; /* XXX sampler? */
break;
default:
*format = PIPE_FORMAT_NONE;
*bind = 0;
break;
}
}
/**
* swap_fences_pop_front - pull a fence from the throttle queue
*
* If the throttle queue is filled to the desired number of fences,
* pull fences off the queue until the number is less than the desired
* number of fences, and return the last fence pulled.
*/
static struct pipe_fence_handle *
swap_fences_pop_front(struct dri_drawable *draw)
{
struct pipe_screen *screen = draw->screen->base.screen;
struct pipe_fence_handle *fence = NULL;
if (draw->desired_fences == 0)
return NULL;
if (draw->cur_fences >= draw->desired_fences) {
screen->fence_reference(screen, &fence, draw->swap_fences[draw->tail]);
screen->fence_reference(screen, &draw->swap_fences[draw->tail++], NULL);
draw->tail &= DRI_SWAP_FENCES_MASK;
--draw->cur_fences;
}
return fence;
}
/**
* swap_fences_push_back - push a fence onto the throttle queue
*
* push a fence onto the throttle queue and pull fences of the queue
* so that the desired number of fences are on the queue.
*/
static void
swap_fences_push_back(struct dri_drawable *draw,
struct pipe_fence_handle *fence)
{
struct pipe_screen *screen = draw->screen->base.screen;
if (!fence || draw->desired_fences == 0)
return;
while(draw->cur_fences == draw->desired_fences)
swap_fences_pop_front(draw);
draw->cur_fences++;
screen->fence_reference(screen, &draw->swap_fences[draw->head++],
fence);
draw->head &= DRI_SWAP_FENCES_MASK;
}
/**
* swap_fences_unref - empty the throttle queue
*
* pulls fences of the throttle queue until it is empty.
*/
static void
swap_fences_unref(struct dri_drawable *draw)
{
struct pipe_screen *screen = draw->screen->base.screen;
while(draw->cur_fences) {
screen->fence_reference(screen, &draw->swap_fences[draw->tail++], NULL);
draw->tail &= DRI_SWAP_FENCES_MASK;
--draw->cur_fences;
}
}
void
dri_pipe_blit(struct pipe_context *pipe,
struct pipe_resource *dst,
struct pipe_resource *src)
{
struct pipe_blit_info blit;
if (!dst || !src)
return;
memset(&blit
, 0, sizeof(blit
)); blit.dst.resource = dst;
blit.dst.box.width = dst->width0;
blit.dst.box.height = dst->height0;
blit.dst.box.depth = 1;
blit.dst.format = util_format_linear(dst->format);
blit.src.resource = src;
blit.src.box.width = src->width0;
blit.src.box.height = src->height0;
blit.src.box.depth = 1;
blit.src.format = util_format_linear(src->format);
blit.mask = PIPE_MASK_RGBA;
blit.filter = PIPE_TEX_FILTER_NEAREST;
pipe->blit(pipe, &blit);
}
static void
dri_postprocessing(struct dri_context *ctx,
struct dri_drawable *drawable,
enum st_attachment_type att)
{
struct pipe_resource *src = drawable->textures[att];
struct pipe_resource *zsbuf = drawable->textures[ST_ATTACHMENT_DEPTH_STENCIL];
if (ctx->pp && src && zsbuf)
pp_run(ctx->pp, src, src, zsbuf);
}
/**
* DRI2 flush extension, the flush_with_flags function.
*
* \param context the context
* \param drawable the drawable to flush
* \param flags a combination of _DRI2_FLUSH_xxx flags
* \param throttle_reason the reason for throttling, 0 = no throttling
*/
void
dri_flush(__DRIcontext *cPriv,
__DRIdrawable *dPriv,
unsigned flags,
enum __DRI2throttleReason reason)
{
struct dri_context *ctx = dri_context(cPriv);
struct dri_drawable *drawable = dri_drawable(dPriv);
unsigned flush_flags;
boolean swap_msaa_buffers = FALSE;
if (!ctx) {
return;
}
if (drawable) {
/* prevent recursion */
if (drawable->flushing)
return;
drawable->flushing = TRUE;
}
else {
flags &= ~__DRI2_FLUSH_DRAWABLE;
}
/* Flush the drawable. */
if ((flags & __DRI2_FLUSH_DRAWABLE) &&
drawable->textures[ST_ATTACHMENT_BACK_LEFT]) {
if (drawable->stvis.samples > 1 &&
reason == __DRI2_THROTTLE_SWAPBUFFER) {
/* Resolve the MSAA back buffer. */
dri_pipe_blit(ctx->st->pipe,
drawable->textures[ST_ATTACHMENT_BACK_LEFT],
drawable->msaa_textures[ST_ATTACHMENT_BACK_LEFT]);
if (drawable->msaa_textures[ST_ATTACHMENT_FRONT_LEFT] &&
drawable->msaa_textures[ST_ATTACHMENT_BACK_LEFT]) {
swap_msaa_buffers = TRUE;
}
/* FRONT_LEFT is resolved in drawable->flush_frontbuffer. */
}
dri_postprocessing(ctx, drawable, ST_ATTACHMENT_BACK_LEFT);
if (ctx->hud) {
hud_draw(ctx->hud, drawable->textures[ST_ATTACHMENT_BACK_LEFT]);
}
}
flush_flags = 0;
if (flags & __DRI2_FLUSH_CONTEXT)
flush_flags |= ST_FLUSH_FRONT;
if (reason == __DRI2_THROTTLE_SWAPBUFFER)
flush_flags |= ST_FLUSH_END_OF_FRAME;
/* Flush the context and throttle if needed. */
if (dri_screen(ctx->sPriv)->throttling_enabled &&
drawable &&
(reason == __DRI2_THROTTLE_SWAPBUFFER ||
reason == __DRI2_THROTTLE_FLUSHFRONT)) {
/* Throttle.
*
* This pulls a fence off the throttling queue and waits for it if the
* number of fences on the throttling queue has reached the desired
* number.
*
* Then flushes to insert a fence at the current rendering position, and
* pushes that fence on the queue. This requires that the st_context_iface
* flush method returns a fence even if there are no commands to flush.
*/
struct pipe_screen *screen = drawable->screen->base.screen;
struct pipe_fence_handle *fence;
fence = swap_fences_pop_front(drawable);
if (fence) {
(void) screen->fence_finish(screen, fence, PIPE_TIMEOUT_INFINITE);
screen->fence_reference(screen, &fence, NULL);
}
ctx->st->flush(ctx->st, flush_flags, &fence);
if (fence) {
swap_fences_push_back(drawable, fence);
screen->fence_reference(screen, &fence, NULL);
}
}
else if (flags & (__DRI2_FLUSH_DRAWABLE | __DRI2_FLUSH_CONTEXT)) {
ctx->st->flush(ctx->st, flush_flags, NULL);
}
if (drawable) {
drawable->flushing = FALSE;
}
/* Swap the MSAA front and back buffers, so that reading
* from the front buffer after SwapBuffers returns what was
* in the back buffer.
*/
if (swap_msaa_buffers) {
struct pipe_resource *tmp =
drawable->msaa_textures[ST_ATTACHMENT_FRONT_LEFT];
drawable->msaa_textures[ST_ATTACHMENT_FRONT_LEFT] =
drawable->msaa_textures[ST_ATTACHMENT_BACK_LEFT];
drawable->msaa_textures[ST_ATTACHMENT_BACK_LEFT] = tmp;
/* Now that we have swapped the buffers, this tells the state
* tracker to revalidate the framebuffer.
*/
p_atomic_inc(&drawable->base.stamp);
}
}
/**
* dri_throttle - A DRI2ThrottleExtension throttling function.
*/
static void
dri_throttle(__DRIcontext *cPriv, __DRIdrawable *dPriv,
enum __DRI2throttleReason reason)
{
dri_flush(cPriv, dPriv, 0, reason);
}
const __DRI2throttleExtension dri2ThrottleExtension = {
.base = { __DRI2_THROTTLE, __DRI2_THROTTLE_VERSION },
.throttle = dri_throttle,
};
/* vim: set sw=3 ts=8 sts=3 expandtab: */