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Diffstat (limited to 'src/gallium/winsys/dri/intel/intel_swapbuffers.c')
-rw-r--r--src/gallium/winsys/dri/intel/intel_swapbuffers.c253
1 files changed, 253 insertions, 0 deletions
diff --git a/src/gallium/winsys/dri/intel/intel_swapbuffers.c b/src/gallium/winsys/dri/intel/intel_swapbuffers.c
new file mode 100644
index 00000000000..56b86d6a636
--- /dev/null
+++ b/src/gallium/winsys/dri/intel/intel_swapbuffers.c
@@ -0,0 +1,253 @@
+/**************************************************************************
+ *
+ * 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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