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/**************************************************************************
*
* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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 TUNGSTEN GRAPHICS 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.
*
**************************************************************************/
#include "intel_screen.h"
#include "intel_context.h"
#include "intel_swapbuffers.h"
#include "intel_batchbuffer.h"
#include "intel_reg.h"
#include "intel_winsys.h"
#include "pipe/p_context.h"
#include "state_tracker/st_public.h"
#include "state_tracker/st_context.h"
#include "state_tracker/st_cb_fbo.h"
/**
* Display a colorbuffer surface in an X window.
* Used for SwapBuffers and flushing front buffer rendering.
*
* \param dPriv the window/drawable to display into
* \param surf the surface to display
* \param rect optional subrect of surface to display (may be NULL).
*/
void
intelDisplaySurface(__DRIdrawablePrivate *dPriv,
struct pipe_surface *surf,
const drm_clip_rect_t *rect)
{
struct intel_screen *intelScreen = intel_screen(dPriv->driScreenPriv);
struct intel_context *intel = intelScreen->dummyContext;
DBG(SWAP, "%s\n", __FUNCTION__);
if (!intel) {
/* XXX this is where some kind of extra/meta context could be useful */
return;
}
if (intel->last_swap_fence) {
driFenceFinish(intel->last_swap_fence, DRM_FENCE_TYPE_EXE, TRUE);
driFenceUnReference(intel->last_swap_fence);
intel->last_swap_fence = NULL;
}
intel->last_swap_fence = intel->first_swap_fence;
intel->first_swap_fence = NULL;
/* The LOCK_HARDWARE is required for the cliprects. Buffer offsets
* should work regardless.
*/
LOCK_HARDWARE(intel);
/* if this drawable isn't currently bound the LOCK_HARDWARE done on the
* current context (which is what intelScreenContext should return) might
* not get a contended lock and thus cliprects not updated (tests/manywin)
*/
if (intel_context(dPriv->driContextPriv) != intel)
DRI_VALIDATE_DRAWABLE_INFO(intel->driScreen, dPriv);
if (dPriv && dPriv->numClipRects) {
const int srcWidth = surf->width;
const int srcHeight = surf->height;
const int nbox = dPriv->numClipRects;
const drm_clip_rect_t *pbox = dPriv->pClipRects;
const int pitch = intelScreen->front.pitch / intelScreen->front.cpp;
const int cpp = intelScreen->front.cpp;
const int srcpitch = surf->pitch;
int BR13, CMD;
int i;
ASSERT(surf->buffer);
ASSERT(surf->cpp == cpp);
DBG(SWAP, "screen pitch %d src surface pitch %d\n",
pitch, surf->pitch);
if (cpp == 2) {
BR13 = (pitch * cpp) | (0xCC << 16) | (1 << 24);
CMD = XY_SRC_COPY_BLT_CMD;
}
else {
BR13 = (pitch * cpp) | (0xCC << 16) | (1 << 24) | (1 << 25);
CMD = (XY_SRC_COPY_BLT_CMD | XY_SRC_COPY_BLT_WRITE_ALPHA |
XY_SRC_COPY_BLT_WRITE_RGB);
}
for (i = 0; i < nbox; i++, pbox++) {
drm_clip_rect_t box;
drm_clip_rect_t sbox;
if (pbox->x1 > pbox->x2 ||
pbox->y1 > pbox->y2 ||
pbox->x2 > intelScreen->front.width ||
pbox->y2 > intelScreen->front.height) {
/* invalid cliprect, skip it */
continue;
}
box = *pbox;
if (rect) {
/* intersect cliprect with user-provided src rect */
drm_clip_rect_t rrect;
rrect.x1 = dPriv->x + rect->x1;
rrect.y1 = (dPriv->h - rect->y1 - rect->y2) + dPriv->y;
rrect.x2 = rect->x2 + rrect.x1;
rrect.y2 = rect->y2 + rrect.y1;
if (rrect.x1 > box.x1)
box.x1 = rrect.x1;
if (rrect.y1 > box.y1)
box.y1 = rrect.y1;
if (rrect.x2 < box.x2)
box.x2 = rrect.x2;
if (rrect.y2 < box.y2)
box.y2 = rrect.y2;
if (box.x1 > box.x2 || box.y1 > box.y2)
continue;
}
/* restrict blit to size of actually rendered area */
if (box.x2 - box.x1 > srcWidth)
box.x2 = srcWidth + box.x1;
if (box.y2 - box.y1 > srcHeight)
box.y2 = srcHeight + box.y1;
DBG(SWAP, "box x1 x2 y1 y2 %d %d %d %d\n",
box.x1, box.x2, box.y1, box.y2);
sbox.x1 = box.x1 - dPriv->x;
sbox.y1 = box.y1 - dPriv->y;
assert(box.x1 < box.x2);
assert(box.y1 < box.y2);
/* XXX this could be done with pipe->surface_copy() */
BEGIN_BATCH(8, INTEL_BATCH_NO_CLIPRECTS);
OUT_BATCH(CMD);
OUT_BATCH(BR13);
OUT_BATCH((box.y1 << 16) | box.x1);
OUT_BATCH((box.y2 << 16) | box.x2);
OUT_RELOC(intelScreen->front.buffer,
DRM_BO_FLAG_MEM_TT | DRM_BO_FLAG_WRITE,
DRM_BO_MASK_MEM | DRM_BO_FLAG_WRITE, 0);
OUT_BATCH((sbox.y1 << 16) | sbox.x1);
OUT_BATCH((srcpitch * cpp) & 0xffff);
OUT_RELOC(dri_bo(surf->buffer),
DRM_BO_FLAG_MEM_TT | DRM_BO_FLAG_READ,
DRM_BO_MASK_MEM | DRM_BO_FLAG_READ, 0);
ADVANCE_BATCH();
}
if (intel->first_swap_fence)
driFenceUnReference(intel->first_swap_fence);
intel->first_swap_fence = intel_batchbuffer_flush(intel->batch);
driFenceReference(intel->first_swap_fence);
}
UNLOCK_HARDWARE(intel);
if (intel->lastStamp != dPriv->lastStamp) {
intelUpdateWindowSize(dPriv);
intel->lastStamp = dPriv->lastStamp;
}
}
/**
* This will be called whenever the currently bound window is moved/resized.
*/
void
intelUpdateWindowSize(__DRIdrawablePrivate *dPriv)
{
struct intel_framebuffer *intelfb = intel_framebuffer(dPriv);
assert(intelfb->stfb);
st_resize_framebuffer(intelfb->stfb, dPriv->w, dPriv->h);
}
void
intelSwapBuffers(__DRIdrawablePrivate * dPriv)
{
struct intel_framebuffer *intel_fb = intel_framebuffer(dPriv);
struct pipe_surface *back_surf;
assert(intel_fb);
assert(intel_fb->stfb);
back_surf = st_get_framebuffer_surface(intel_fb->stfb,
ST_SURFACE_BACK_LEFT);
if (back_surf) {
st_notify_swapbuffers(intel_fb->stfb);
intelDisplaySurface(dPriv, back_surf, NULL);
st_notify_swapbuffers_complete(intel_fb->stfb);
}
}
/**
* Called via glXCopySubBufferMESA() to copy a subrect of the back
* buffer to the front buffer/screen.
*/
void
intelCopySubBuffer(__DRIdrawablePrivate * dPriv, int x, int y, int w, int h)
{
struct intel_framebuffer *intel_fb = intel_framebuffer(dPriv);
struct pipe_surface *back_surf;
assert(intel_fb);
assert(intel_fb->stfb);
back_surf = st_get_framebuffer_surface(intel_fb->stfb,
ST_SURFACE_BACK_LEFT);
if (back_surf) {
drm_clip_rect_t rect;
rect.x1 = x;
rect.y1 = y;
rect.x2 = w;
rect.y2 = h;
st_notify_swapbuffers(intel_fb->stfb);
intelDisplaySurface(dPriv, back_surf, &rect);
}
}
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