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Diffstat (limited to 'src/mesa/drivers/dri/intel/intel_swapbuffers.c')
-rw-r--r--src/mesa/drivers/dri/intel/intel_swapbuffers.c248
1 files changed, 248 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/intel/intel_swapbuffers.c b/src/mesa/drivers/dri/intel/intel_swapbuffers.c
new file mode 100644
index 0000000000..7d035b9f6e
--- /dev/null
+++ b/src/mesa/drivers/dri/intel/intel_swapbuffers.c
@@ -0,0 +1,248 @@
+/**************************************************************************
+ *
+ * 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_blit.h"
+#include "intel_buffers.h"
+#include "intel_swapbuffers.h"
+#include "intel_fbo.h"
+#include "intel_batchbuffer.h"
+#include "drirenderbuffer.h"
+#include "vblank.h"
+#include "i915_drm.h"
+
+
+
+/*
+ * Correct a drawablePrivate's set of vblank flags WRT the current context.
+ * When considering multiple crtcs.
+ */
+GLuint
+intelFixupVblank(struct intel_context *intel, __DRIdrawablePrivate *dPriv)
+{
+ if (!intel->intelScreen->driScrnPriv->dri2.enabled &&
+ intel->intelScreen->driScrnPriv->ddx_version.minor >= 7) {
+ volatile drm_i915_sarea_t *sarea = intel->sarea;
+ drm_clip_rect_t drw_rect = { .x1 = dPriv->x, .x2 = dPriv->x + dPriv->w,
+ .y1 = dPriv->y, .y2 = dPriv->y + dPriv->h };
+ drm_clip_rect_t planeA_rect = { .x1 = sarea->planeA_x, .y1 = sarea->planeA_y,
+ .x2 = sarea->planeA_x + sarea->planeA_w,
+ .y2 = sarea->planeA_y + sarea->planeA_h };
+ drm_clip_rect_t planeB_rect = { .x1 = sarea->planeB_x, .y1 = sarea->planeB_y,
+ .x2 = sarea->planeB_x + sarea->planeB_w,
+ .y2 = sarea->planeB_y + sarea->planeB_h };
+ GLint areaA = driIntersectArea( drw_rect, planeA_rect );
+ GLint areaB = driIntersectArea( drw_rect, planeB_rect );
+ GLuint flags = dPriv->vblFlags;
+
+ /* Update vblank info
+ */
+ if (areaB > areaA || (areaA == areaB && areaB > 0)) {
+ flags = dPriv->vblFlags | VBLANK_FLAG_SECONDARY;
+ } else {
+ flags = dPriv->vblFlags & ~VBLANK_FLAG_SECONDARY;
+ }
+
+ /* Do the stupid test: Is one of them actually disabled?
+ */
+ if (sarea->planeA_w == 0 || sarea->planeA_h == 0) {
+ flags = dPriv->vblFlags | VBLANK_FLAG_SECONDARY;
+ } else if (sarea->planeB_w == 0 || sarea->planeB_h == 0) {
+ flags = dPriv->vblFlags & ~VBLANK_FLAG_SECONDARY;
+ }
+
+ return flags;
+ } else {
+ return dPriv->vblFlags & ~VBLANK_FLAG_SECONDARY;
+ }
+}
+
+
+/**
+ * Called from driSwapBuffers()
+ */
+void
+intelSwapBuffers(__DRIdrawablePrivate * dPriv)
+{
+ __DRIscreenPrivate *psp = dPriv->driScreenPriv;
+
+ if (dPriv->driContextPriv && dPriv->driContextPriv->driverPrivate) {
+ GET_CURRENT_CONTEXT(ctx);
+ struct intel_context *intel;
+
+ if (ctx == NULL)
+ return;
+
+ intel = intel_context(ctx);
+
+ if (ctx->Visual.doubleBufferMode) {
+ GLboolean missed_target;
+ struct intel_framebuffer *intel_fb = dPriv->driverPrivate;
+ int64_t ust;
+
+ _mesa_notifySwapBuffers(ctx); /* flush pending rendering comands */
+
+ /*
+ * The old swapping ioctl was incredibly racy, just wait for vblank
+ * and do the swap ourselves.
+ */
+ driWaitForVBlank(dPriv, &missed_target);
+
+ /*
+ * Update each buffer's vbl_pending so we don't get too out of
+ * sync
+ */
+ intel_get_renderbuffer(&intel_fb->Base,
+ BUFFER_BACK_LEFT)->vbl_pending = dPriv->vblSeq;
+ intel_get_renderbuffer(&intel_fb->Base,
+ BUFFER_FRONT_LEFT)->vbl_pending = dPriv->vblSeq;
+
+ intelCopyBuffer(dPriv, NULL);
+
+ intel_fb->swap_count++;
+ (*psp->systemTime->getUST) (&ust);
+ if (missed_target) {
+ intel_fb->swap_missed_count++;
+ intel_fb->swap_missed_ust = ust - intel_fb->swap_ust;
+ }
+
+ intel_fb->swap_ust = ust;
+ }
+ drmCommandNone(intel->driFd, DRM_I915_GEM_THROTTLE);
+ }
+ else {
+ /* XXX this shouldn't be an error but we can't handle it for now */
+ fprintf(stderr, "%s: drawable has no context!\n", __FUNCTION__);
+ }
+}
+
+
+/**
+ * Called from driCopySubBuffer()
+ */
+void
+intelCopySubBuffer(__DRIdrawablePrivate * dPriv, int x, int y, int w, int h)
+{
+ if (dPriv->driContextPriv && dPriv->driContextPriv->driverPrivate) {
+ struct intel_context *intel =
+ (struct intel_context *) dPriv->driContextPriv->driverPrivate;
+ GLcontext *ctx = &intel->ctx;
+
+ if (ctx->Visual.doubleBufferMode) {
+ drm_clip_rect_t rect;
+ rect.x1 = x + dPriv->x;
+ rect.y1 = (dPriv->h - y - h) + dPriv->y;
+ rect.x2 = rect.x1 + w;
+ rect.y2 = rect.y1 + h;
+ _mesa_notifySwapBuffers(ctx); /* flush pending rendering comands */
+ intelCopyBuffer(dPriv, &rect);
+ }
+ }
+ else {
+ /* XXX this shouldn't be an error but we can't handle it for now */
+ fprintf(stderr, "%s: drawable has no context!\n", __FUNCTION__);
+ }
+}
+
+
+/**
+ * This will be called whenever the currently bound window is moved/resized.
+ * XXX: actually, it seems to NOT be called when the window is only moved (BP).
+ */
+void
+intelWindowMoved(struct intel_context *intel)
+{
+ GLcontext *ctx = &intel->ctx;
+ __DRIdrawablePrivate *dPriv = intel->driDrawable;
+ struct intel_framebuffer *intel_fb = dPriv->driverPrivate;
+
+ if (!intel->intelScreen->driScrnPriv->dri2.enabled &&
+ intel->intelScreen->driScrnPriv->ddx_version.minor >= 7) {
+ GLuint flags = intelFixupVblank(intel, dPriv);
+
+ /* Check to see if we changed pipes */
+ if (flags != dPriv->vblFlags && dPriv->vblFlags &&
+ !(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ)) {
+ int64_t count;
+ drmVBlank vbl;
+ int i;
+
+ /*
+ * Deal with page flipping
+ */
+ vbl.request.type = DRM_VBLANK_ABSOLUTE;
+
+ if ( dPriv->vblFlags & VBLANK_FLAG_SECONDARY ) {
+ vbl.request.type |= DRM_VBLANK_SECONDARY;
+ }
+
+ for (i = 0; i < 2; i++) {
+ if (!intel_fb->color_rb[i] ||
+ (intel_fb->vbl_waited - intel_fb->color_rb[i]->vbl_pending) <=
+ (1<<23))
+ continue;
+
+ vbl.request.sequence = intel_fb->color_rb[i]->vbl_pending;
+ drmWaitVBlank(intel->driFd, &vbl);
+ }
+
+ /*
+ * Update msc_base from old pipe
+ */
+ driDrawableGetMSC32(dPriv->driScreenPriv, dPriv, &count);
+ dPriv->msc_base = count;
+ /*
+ * Then get new vblank_base and vblSeq values
+ */
+ dPriv->vblFlags = flags;
+ driGetCurrentVBlank(dPriv);
+ dPriv->vblank_base = dPriv->vblSeq;
+
+ intel_fb->vbl_waited = dPriv->vblSeq;
+
+ for (i = 0; i < 2; i++) {
+ if (intel_fb->color_rb[i])
+ intel_fb->color_rb[i]->vbl_pending = intel_fb->vbl_waited;
+ }
+ }
+ } else {
+ dPriv->vblFlags &= ~VBLANK_FLAG_SECONDARY;
+ }
+
+ /* Update Mesa's notion of window size */
+ driUpdateFramebufferSize(ctx, dPriv);
+ intel_fb->Base.Initialized = GL_TRUE; /* XXX remove someday */
+
+ /* Update hardware scissor */
+ if (ctx->Driver.Scissor != NULL) {
+ ctx->Driver.Scissor(ctx, ctx->Scissor.X, ctx->Scissor.Y,
+ ctx->Scissor.Width, ctx->Scissor.Height);
+ }
+
+ /* Re-calculate viewport related state */
+ if (ctx->Driver.DepthRange != NULL)
+ ctx->Driver.DepthRange( ctx, ctx->Viewport.Near, ctx->Viewport.Far );
+}
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