diff options
Diffstat (limited to 'src/mesa/drivers/dri/intel/intel_swapbuffers.c')
| -rw-r--r-- | src/mesa/drivers/dri/intel/intel_swapbuffers.c | 248 |
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 00000000000..7d035b9f6e4 --- /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 ); +} |