diff options
Diffstat (limited to 'src/mesa/drivers/dri/i915/intel_buffers.c')
| l---------[-rw-r--r--] | src/mesa/drivers/dri/i915/intel_buffers.c | 1210 |
1 files changed, 1 insertions, 1209 deletions
diff --git a/src/mesa/drivers/dri/i915/intel_buffers.c b/src/mesa/drivers/dri/i915/intel_buffers.c index 1ae8b5feb4c..c86daa49f47 100644..120000 --- a/src/mesa/drivers/dri/i915/intel_buffers.c +++ b/src/mesa/drivers/dri/i915/intel_buffers.c @@ -1,1209 +1 @@ -/************************************************************************** - * - * 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_blit.h" -#include "intel_buffers.h" -#include "intel_depthstencil.h" -#include "intel_fbo.h" -#include "intel_tris.h" -#include "intel_regions.h" -#include "intel_batchbuffer.h" -#include "intel_reg.h" -#include "context.h" -#include "utils.h" -#include "drirenderbuffer.h" -#include "framebuffer.h" -#include "swrast/swrast.h" -#include "vblank.h" - - -/* This block can be removed when libdrm >= 2.3.1 is required */ - -#ifndef DRM_IOCTL_I915_FLIP - -#define DRM_VBLANK_FLIP 0x8000000 - -typedef struct drm_i915_flip { - int pipes; -} drm_i915_flip_t; - -#undef DRM_IOCTL_I915_FLIP -#define DRM_IOCTL_I915_FLIP DRM_IOW(DRM_COMMAND_BASE + DRM_I915_FLIP, \ - drm_i915_flip_t) - -#endif - - -/** - * XXX move this into a new dri/common/cliprects.c file. - */ -GLboolean -intel_intersect_cliprects(drm_clip_rect_t * dst, - const drm_clip_rect_t * a, - const drm_clip_rect_t * b) -{ - GLint bx = b->x1; - GLint by = b->y1; - GLint bw = b->x2 - bx; - GLint bh = b->y2 - by; - - if (bx < a->x1) - bw -= a->x1 - bx, bx = a->x1; - if (by < a->y1) - bh -= a->y1 - by, by = a->y1; - if (bx + bw > a->x2) - bw = a->x2 - bx; - if (by + bh > a->y2) - bh = a->y2 - by; - if (bw <= 0) - return GL_FALSE; - if (bh <= 0) - return GL_FALSE; - - dst->x1 = bx; - dst->y1 = by; - dst->x2 = bx + bw; - dst->y2 = by + bh; - - return GL_TRUE; -} - -/** - * Return pointer to current color drawing region, or NULL. - */ -struct intel_region * -intel_drawbuf_region(struct intel_context *intel) -{ - struct intel_renderbuffer *irbColor = - intel_renderbuffer(intel->ctx.DrawBuffer->_ColorDrawBuffers[0][0]); - if (irbColor) - return irbColor->region; - else - return NULL; -} - -/** - * Return pointer to current color reading region, or NULL. - */ -struct intel_region * -intel_readbuf_region(struct intel_context *intel) -{ - struct intel_renderbuffer *irb - = intel_renderbuffer(intel->ctx.ReadBuffer->_ColorReadBuffer); - if (irb) - return irb->region; - else - return NULL; -} - - - -/** - * Update the following fields for rendering to a user-created FBO: - * intel->numClipRects - * intel->pClipRects - * intel->drawX - * intel->drawY - */ -static void -intelSetRenderbufferClipRects(struct intel_context *intel) -{ - assert(intel->ctx.DrawBuffer->Width > 0); - assert(intel->ctx.DrawBuffer->Height > 0); - intel->fboRect.x1 = 0; - intel->fboRect.y1 = 0; - intel->fboRect.x2 = intel->ctx.DrawBuffer->Width; - intel->fboRect.y2 = intel->ctx.DrawBuffer->Height; - intel->numClipRects = 1; - intel->pClipRects = &intel->fboRect; - intel->drawX = 0; - intel->drawY = 0; -} - - -/** - * As above, but for rendering to front buffer of a window. - * \sa intelSetRenderbufferClipRects - */ -static void -intelSetFrontClipRects(struct intel_context *intel) -{ - __DRIdrawablePrivate *dPriv = intel->driDrawable; - - if (!dPriv) - return; - - intel->numClipRects = dPriv->numClipRects; - intel->pClipRects = dPriv->pClipRects; - intel->drawX = dPriv->x; - intel->drawY = dPriv->y; -} - - -/** - * As above, but for rendering to back buffer of a window. - */ -static void -intelSetBackClipRects(struct intel_context *intel) -{ - __DRIdrawablePrivate *dPriv = intel->driDrawable; - struct intel_framebuffer *intel_fb; - - if (!dPriv) - return; - - intel_fb = dPriv->driverPrivate; - - if (intel_fb->pf_active || dPriv->numBackClipRects == 0) { - /* use the front clip rects */ - intel->numClipRects = dPriv->numClipRects; - intel->pClipRects = dPriv->pClipRects; - intel->drawX = dPriv->x; - intel->drawY = dPriv->y; - } - else { - /* use the back clip rects */ - intel->numClipRects = dPriv->numBackClipRects; - intel->pClipRects = dPriv->pBackClipRects; - intel->drawX = dPriv->backX; - intel->drawY = dPriv->backY; - } -} - - -/** - * 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->ctx.DrawBuffer) { - /* when would this happen? -BP */ - intelSetFrontClipRects(intel); - } - else if (intel->ctx.DrawBuffer->Name != 0) { - /* drawing to user-created FBO - do nothing */ - /* Cliprects would be set from intelDrawBuffer() */ - } - else { - /* drawing to a window */ - switch (intel_fb->Base._ColorDrawBufferMask[0]) { - case BUFFER_BIT_FRONT_LEFT: - intelSetFrontClipRects(intel); - break; - case BUFFER_BIT_BACK_LEFT: - intelSetBackClipRects(intel); - break; - default: - /* glDrawBuffer(GL_NONE or GL_FRONT_AND_BACK): software fallback */ - intelSetFrontClipRects(intel); - } - } - - if (intel->intelScreen->driScrnPriv->ddx_version.minor >= 7) { - drmI830Sarea *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; - GLboolean pf_active; - GLint pf_planes; - - /* Update page flipping info - */ - pf_planes = 0; - - if (areaA > 0) - pf_planes |= 1; - - if (areaB > 0) - pf_planes |= 2; - - intel_fb->pf_current_page = (intel->sarea->pf_current_page >> - (intel_fb->pf_planes & 0x2)) & 0x3; - - intel_fb->pf_num_pages = intel->intelScreen->third.handle ? 3 : 2; - - pf_active = pf_planes && (pf_planes & intel->sarea->pf_active) == pf_planes; - - if (INTEL_DEBUG & DEBUG_LOCK) - if (pf_active != intel_fb->pf_active) - _mesa_printf("%s - Page flipping %sactive\n", __progname, - pf_active ? "" : "in"); - - if (pf_active) { - /* Sync pages between planes if flipping on both at the same time */ - if (pf_planes == 0x3 && pf_planes != intel_fb->pf_planes && - (intel->sarea->pf_current_page & 0x3) != - (((intel->sarea->pf_current_page) >> 2) & 0x3)) { - drm_i915_flip_t flip; - - if (intel_fb->pf_current_page == - (intel->sarea->pf_current_page & 0x3)) { - /* XXX: This is ugly, but emitting two flips 'in a row' can cause - * lockups for unknown reasons. - */ - intel->sarea->pf_current_page = - intel->sarea->pf_current_page & 0x3; - intel->sarea->pf_current_page |= - ((intel_fb->pf_current_page + intel_fb->pf_num_pages - 1) % - intel_fb->pf_num_pages) << 2; - - flip.pipes = 0x2; - } else { - intel->sarea->pf_current_page = - intel->sarea->pf_current_page & (0x3 << 2); - intel->sarea->pf_current_page |= - (intel_fb->pf_current_page + intel_fb->pf_num_pages - 1) % - intel_fb->pf_num_pages; - - flip.pipes = 0x1; - } - - drmCommandWrite(intel->driFd, DRM_I915_FLIP, &flip, sizeof(flip)); - } - - intel_fb->pf_planes = pf_planes; - } - - intel_fb->pf_active = pf_active; - intel_flip_renderbuffers(intel_fb); - intel_draw_buffer(&intel->ctx, intel->ctx.DrawBuffer); - - /* Update vblank info - */ - if (areaB > areaA || (areaA == areaB && areaB > 0)) { - flags = dPriv->vblFlags | VBLANK_FLAG_SECONDARY; - } else { - flags = dPriv->vblFlags & ~VBLANK_FLAG_SECONDARY; - } - - /* 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 < intel_fb->pf_num_pages; 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 < intel_fb->pf_num_pages; 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 */ - ctx->Driver.Scissor(ctx, ctx->Scissor.X, ctx->Scissor.Y, - ctx->Scissor.Width, ctx->Scissor.Height); - - /* Re-calculate viewport related state */ - ctx->Driver.DepthRange( ctx, ctx->Viewport.Near, ctx->Viewport.Far ); -} - - - -/* A true meta version of this would be very simple and additionally - * machine independent. Maybe we'll get there one day. - */ -static void -intelClearWithTris(struct intel_context *intel, GLbitfield mask) -{ - GLcontext *ctx = &intel->ctx; - struct gl_framebuffer *fb = ctx->DrawBuffer; - drm_clip_rect_t clear; - - if (INTEL_DEBUG & DEBUG_BLIT) - _mesa_printf("%s 0x%x\n", __FUNCTION__, mask); - - LOCK_HARDWARE(intel); - - /* XXX FBO: was: intel->driDrawable->numClipRects */ - if (intel->numClipRects) { - GLint cx, cy, cw, ch; - GLuint buf; - - intel->vtbl.install_meta_state(intel); - - /* Get clear bounds after locking */ - cx = fb->_Xmin; - cy = fb->_Ymin; - ch = fb->_Ymax - cx; - cw = fb->_Xmax - cy; - - /* note: regardless of 'all', cx, cy, cw, ch are now correct */ - clear.x1 = cx; - clear.y1 = cy; - clear.x2 = cx + cw; - clear.y2 = cy + ch; - - /* Back and stencil cliprects are the same. Try and do both - * buffers at once: - */ - if (mask & - (BUFFER_BIT_BACK_LEFT | BUFFER_BIT_STENCIL | BUFFER_BIT_DEPTH)) { - struct intel_region *backRegion = - intel_get_rb_region(fb, BUFFER_BACK_LEFT); - struct intel_region *depthRegion = - intel_get_rb_region(fb, BUFFER_DEPTH); - const GLuint clearColor = (backRegion && backRegion->cpp == 4) - ? intel->ClearColor8888 : intel->ClearColor565; - - intel->vtbl.meta_draw_region(intel, backRegion, depthRegion); - - if (mask & BUFFER_BIT_BACK_LEFT) - intel->vtbl.meta_color_mask(intel, GL_TRUE); - else - intel->vtbl.meta_color_mask(intel, GL_FALSE); - - if (mask & BUFFER_BIT_STENCIL) - intel->vtbl.meta_stencil_replace(intel, - intel->ctx.Stencil.WriteMask[0], - intel->ctx.Stencil.Clear); - else - intel->vtbl.meta_no_stencil_write(intel); - - if (mask & BUFFER_BIT_DEPTH) - intel->vtbl.meta_depth_replace(intel); - else - intel->vtbl.meta_no_depth_write(intel); - - /* XXX: Using INTEL_BATCH_NO_CLIPRECTS here is dangerous as the - * drawing origin may not be correctly emitted. - */ - intel_meta_draw_quad(intel, clear.x1, clear.x2, clear.y1, clear.y2, intel->ctx.Depth.Clear, clearColor, 0, 0, 0, 0); /* texcoords */ - - mask &= - ~(BUFFER_BIT_BACK_LEFT | BUFFER_BIT_STENCIL | BUFFER_BIT_DEPTH); - } - - /* clear the remaining (color) renderbuffers */ - for (buf = 0; buf < BUFFER_COUNT && mask; buf++) { - const GLuint bufBit = 1 << buf; - if (mask & bufBit) { - struct intel_renderbuffer *irbColor = - intel_renderbuffer(fb->Attachment[buf].Renderbuffer); - GLuint color = (irbColor->region->cpp == 4) - ? intel->ClearColor8888 : intel->ClearColor565; - - ASSERT(irbColor); - - intel->vtbl.meta_no_depth_write(intel); - intel->vtbl.meta_no_stencil_write(intel); - intel->vtbl.meta_color_mask(intel, GL_TRUE); - intel->vtbl.meta_draw_region(intel, irbColor->region, NULL); - - /* XXX: Using INTEL_BATCH_NO_CLIPRECTS here is dangerous as the - * drawing origin may not be correctly emitted. - */ - intel_meta_draw_quad(intel, clear.x1, clear.x2, clear.y1, clear.y2, 0, /* depth clear val */ - color, 0, 0, 0, 0); /* texcoords */ - - mask &= ~bufBit; - } - } - - intel->vtbl.leave_meta_state(intel); - intel_batchbuffer_flush(intel->batch); - } - UNLOCK_HARDWARE(intel); -} - - - - -/** - * Copy the window contents named by dPriv to the rotated (or reflected) - * color buffer. - * srcBuf is BUFFER_BIT_FRONT_LEFT or BUFFER_BIT_BACK_LEFT to indicate the source. - */ -void -intelRotateWindow(struct intel_context *intel, - __DRIdrawablePrivate * dPriv, GLuint srcBuf) -{ - intelScreenPrivate *screen = intel->intelScreen; - drm_clip_rect_t fullRect; - struct intel_framebuffer *intel_fb; - struct intel_region *src; - const drm_clip_rect_t *clipRects; - int numClipRects; - int i; - GLenum format, type; - - int xOrig, yOrig; - int origNumClipRects; - drm_clip_rect_t *origRects; - - /* - * set up hardware state - */ - intelFlush(&intel->ctx); - - LOCK_HARDWARE(intel); - - if (!intel->numClipRects) { - UNLOCK_HARDWARE(intel); - return; - } - - intel->vtbl.install_meta_state(intel); - - intel->vtbl.meta_no_depth_write(intel); - intel->vtbl.meta_no_stencil_write(intel); - intel->vtbl.meta_color_mask(intel, GL_FALSE); - - - /* save current drawing origin and cliprects (restored at end) */ - xOrig = intel->drawX; - yOrig = intel->drawY; - origNumClipRects = intel->numClipRects; - origRects = intel->pClipRects; - - /* - * set drawing origin, cliprects for full-screen access to rotated screen - */ - fullRect.x1 = 0; - fullRect.y1 = 0; - fullRect.x2 = screen->rotatedWidth; - fullRect.y2 = screen->rotatedHeight; - intel->drawX = 0; - intel->drawY = 0; - intel->numClipRects = 1; - intel->pClipRects = &fullRect; - - intel->vtbl.meta_draw_region(intel, screen->rotated_region, NULL); /* ? */ - - intel_fb = dPriv->driverPrivate; - - if ((srcBuf == BUFFER_BIT_BACK_LEFT && !intel_fb->pf_active)) { - src = intel_get_rb_region(&intel_fb->Base, BUFFER_BACK_LEFT); - clipRects = dPriv->pBackClipRects; - numClipRects = dPriv->numBackClipRects; - } - else { - src = intel_get_rb_region(&intel_fb->Base, BUFFER_FRONT_LEFT); - clipRects = dPriv->pClipRects; - numClipRects = dPriv->numClipRects; - } - - if (src->cpp == 4) { - format = GL_BGRA; - type = GL_UNSIGNED_BYTE; - } - else { - format = GL_BGR; - type = GL_UNSIGNED_SHORT_5_6_5_REV; - } - - /* set the whole screen up as a texture to avoid alignment issues */ - intel->vtbl.meta_tex_rect_source(intel, - src->buffer, - screen->width, - screen->height, src->pitch, format, type); - - intel->vtbl.meta_texture_blend_replace(intel); - - /* - * loop over the source window's cliprects - */ - for (i = 0; i < numClipRects; i++) { - int srcX0 = clipRects[i].x1; - int srcY0 = clipRects[i].y1; - int srcX1 = clipRects[i].x2; - int srcY1 = clipRects[i].y2; - GLfloat verts[4][2], tex[4][2]; - int j; - - /* build vertices for four corners of clip rect */ - verts[0][0] = srcX0; - verts[0][1] = srcY0; - verts[1][0] = srcX1; - verts[1][1] = srcY0; - verts[2][0] = srcX1; - verts[2][1] = srcY1; - verts[3][0] = srcX0; - verts[3][1] = srcY1; - - /* .. and texcoords */ - tex[0][0] = srcX0; - tex[0][1] = srcY0; - tex[1][0] = srcX1; - tex[1][1] = srcY0; - tex[2][0] = srcX1; - tex[2][1] = srcY1; - tex[3][0] = srcX0; - tex[3][1] = srcY1; - - /* transform coords to rotated screen coords */ - - for (j = 0; j < 4; j++) { - matrix23TransformCoordf(&screen->rotMatrix, - &verts[j][0], &verts[j][1]); - } - - /* draw polygon to map source image to dest region */ - intel_meta_draw_poly(intel, 4, verts, 0, 0, tex); - - } /* cliprect loop */ - - intel->vtbl.leave_meta_state(intel); - intel_batchbuffer_flush(intel->batch); - - /* restore original drawing origin and cliprects */ - intel->drawX = xOrig; - intel->drawY = yOrig; - intel->numClipRects = origNumClipRects; - intel->pClipRects = origRects; - - UNLOCK_HARDWARE(intel); -} - - -/** - * Called by ctx->Driver.Clear. - */ -static void -intelClear(GLcontext *ctx, GLbitfield mask) -{ - struct intel_context *intel = intel_context(ctx); - const GLuint colorMask = *((GLuint *) & ctx->Color.ColorMask); - GLbitfield tri_mask = 0; - GLbitfield blit_mask = 0; - GLbitfield swrast_mask = 0; - struct gl_framebuffer *fb = ctx->DrawBuffer; - GLuint i; - - if (0) - fprintf(stderr, "%s\n", __FUNCTION__); - - /* HW color buffers (front, back, aux, generic FBO, etc) */ - if (colorMask == ~0) { - /* clear all R,G,B,A */ - /* XXX FBO: need to check if colorbuffers are software RBOs! */ - blit_mask |= (mask & BUFFER_BITS_COLOR); - } - else { - /* glColorMask in effect */ - tri_mask |= (mask & BUFFER_BITS_COLOR); - } - - /* HW stencil */ - if (mask & BUFFER_BIT_STENCIL) { - const struct intel_region *stencilRegion - = intel_get_rb_region(fb, BUFFER_STENCIL); - if (stencilRegion) { - /* have hw stencil */ - if ((ctx->Stencil.WriteMask[0] & 0xff) != 0xff) { - /* not clearing all stencil bits, so use triangle clearing */ - tri_mask |= BUFFER_BIT_STENCIL; - } - else { - /* clearing all stencil bits, use blitting */ - blit_mask |= BUFFER_BIT_STENCIL; - } - } - } - - /* HW depth */ - if (mask & BUFFER_BIT_DEPTH) { - /* clear depth with whatever method is used for stencil (see above) */ - if (tri_mask & BUFFER_BIT_STENCIL) - tri_mask |= BUFFER_BIT_DEPTH; - else - blit_mask |= BUFFER_BIT_DEPTH; - } - - /* SW fallback clearing */ - swrast_mask = mask & ~tri_mask & ~blit_mask; - - for (i = 0; i < BUFFER_COUNT; i++) { - GLuint bufBit = 1 << i; - if ((blit_mask | tri_mask) & bufBit) { - if (!fb->Attachment[i].Renderbuffer->ClassID) { - blit_mask &= ~bufBit; - tri_mask &= ~bufBit; - swrast_mask |= bufBit; - } - } - } - - - intelFlush(ctx); /* XXX intelClearWithBlit also does this */ - - if (blit_mask) - intelClearWithBlit(ctx, blit_mask); - - if (tri_mask) - intelClearWithTris(intel, tri_mask); - - if (swrast_mask) - _swrast_Clear(ctx, swrast_mask); -} - - -/* Emit wait for pending flips */ -void -intel_wait_flips(struct intel_context *intel, GLuint batch_flags) -{ - struct intel_framebuffer *intel_fb = - (struct intel_framebuffer *) intel->ctx.DrawBuffer; - struct intel_renderbuffer *intel_rb = - intel_get_renderbuffer(&intel_fb->Base, - intel_fb->Base._ColorDrawBufferMask[0] == - BUFFER_BIT_FRONT_LEFT ? BUFFER_FRONT_LEFT : - BUFFER_BACK_LEFT); - - if (intel_fb->Base.Name == 0 && intel_rb->pf_pending == intel_fb->pf_seq) { - GLint pf_planes = intel_fb->pf_planes; - BATCH_LOCALS; - - /* Wait for pending flips to take effect */ - BEGIN_BATCH(2, batch_flags); - OUT_BATCH(pf_planes & 0x1 ? (MI_WAIT_FOR_EVENT | MI_WAIT_FOR_PLANE_A_FLIP) - : 0); - OUT_BATCH(pf_planes & 0x2 ? (MI_WAIT_FOR_EVENT | MI_WAIT_FOR_PLANE_B_FLIP) - : 0); - ADVANCE_BATCH(); - - intel_rb->pf_pending--; - } -} - - -/* Flip the front & back buffers - */ -static GLboolean -intelPageFlip(const __DRIdrawablePrivate * dPriv) -{ - struct intel_context *intel; - int ret; - struct intel_framebuffer *intel_fb = dPriv->driverPrivate; - - if (INTEL_DEBUG & DEBUG_IOCTL) - fprintf(stderr, "%s\n", __FUNCTION__); - - assert(dPriv); - assert(dPriv->driContextPriv); - assert(dPriv->driContextPriv->driverPrivate); - - intel = (struct intel_context *) dPriv->driContextPriv->driverPrivate; - - if (intel->intelScreen->drmMinor < 9) - return GL_FALSE; - - intelFlush(&intel->ctx); - - ret = 0; - - LOCK_HARDWARE(intel); - - if (dPriv->numClipRects && intel_fb->pf_active) { - drm_i915_flip_t flip; - - flip.pipes = intel_fb->pf_planes; - - ret = drmCommandWrite(intel->driFd, DRM_I915_FLIP, &flip, sizeof(flip)); - } - - UNLOCK_HARDWARE(intel); - - if (ret || !intel_fb->pf_active) - return GL_FALSE; - - if (!dPriv->numClipRects) { - usleep(10000); /* throttle invisible client 10ms */ - } - - intel_fb->pf_current_page = (intel->sarea->pf_current_page >> - (intel_fb->pf_planes & 0x2)) & 0x3; - - if (dPriv->numClipRects != 0) { - intel_get_renderbuffer(&intel_fb->Base, BUFFER_FRONT_LEFT)->pf_pending = - intel_get_renderbuffer(&intel_fb->Base, BUFFER_BACK_LEFT)->pf_pending = - ++intel_fb->pf_seq; - } - - intel_flip_renderbuffers(intel_fb); - intel_draw_buffer(&intel->ctx, &intel_fb->Base); - - return GL_TRUE; -} - -#if 0 -void -intelSwapBuffers(__DRIdrawablePrivate * dPriv) -{ - if (dPriv->driverPrivate) { - const struct gl_framebuffer *fb - = (struct gl_framebuffer *) dPriv->driverPrivate; - if (fb->Visual.doubleBufferMode) { - GET_CURRENT_CONTEXT(ctx); - if (ctx && ctx->DrawBuffer == fb) { - _mesa_notifySwapBuffers(ctx); /* flush pending rendering */ - } - if (intel->doPageFlip) { - intelPageFlip(dPriv); - } - else { - intelCopyBuffer(dPriv); - } - } - } - else { - _mesa_problem(NULL, - "dPriv has no gl_framebuffer pointer in intelSwapBuffers"); - } -} -#else -/* Trunk version: - */ - -static GLboolean -intelScheduleSwap(__DRIdrawablePrivate * dPriv, GLboolean *missed_target) -{ - struct intel_framebuffer *intel_fb = dPriv->driverPrivate; - unsigned int interval; - struct intel_context *intel = - intelScreenContext(dPriv->driScreenPriv->private); - const intelScreenPrivate *intelScreen = intel->intelScreen; - unsigned int target; - drm_i915_vblank_swap_t swap; - GLboolean ret; - - if (!dPriv->vblFlags || - (dPriv->vblFlags & VBLANK_FLAG_NO_IRQ) || - intelScreen->current_rotation != 0 || - intelScreen->drmMinor < (intel_fb->pf_active ? 9 : 6)) - return GL_FALSE; - - interval = driGetVBlankInterval(dPriv); - - swap.seqtype = DRM_VBLANK_ABSOLUTE; - - if (dPriv->vblFlags & VBLANK_FLAG_SYNC) { - swap.seqtype |= DRM_VBLANK_NEXTONMISS; - } else if (interval == 0) { - return GL_FALSE; - } - - swap.drawable = dPriv->hHWDrawable; - target = swap.sequence = dPriv->vblSeq + interval; - - if ( dPriv->vblFlags & VBLANK_FLAG_SECONDARY ) { - swap.seqtype |= DRM_VBLANK_SECONDARY; - } - - LOCK_HARDWARE(intel); - - intel_batchbuffer_flush(intel->batch); - - if ( intel_fb->pf_active ) { - swap.seqtype |= DRM_VBLANK_FLIP; - - intel_fb->pf_current_page = (((intel->sarea->pf_current_page >> - (intel_fb->pf_planes & 0x2)) & 0x3) + 1) % - intel_fb->pf_num_pages; - } - - if (!drmCommandWriteRead(intel->driFd, DRM_I915_VBLANK_SWAP, &swap, - sizeof(swap))) { - dPriv->vblSeq = swap.sequence; - swap.sequence -= target; - *missed_target = swap.sequence > 0 && swap.sequence <= (1 << 23); - - intel_get_renderbuffer(&intel_fb->Base, BUFFER_BACK_LEFT)->vbl_pending = - intel_get_renderbuffer(&intel_fb->Base, - BUFFER_FRONT_LEFT)->vbl_pending = - dPriv->vblSeq; - - if (swap.seqtype & DRM_VBLANK_FLIP) { - intel_flip_renderbuffers(intel_fb); - intel_draw_buffer(&intel->ctx, intel->ctx.DrawBuffer); - } - - ret = GL_TRUE; - } else { - if (swap.seqtype & DRM_VBLANK_FLIP) { - intel_fb->pf_current_page = ((intel->sarea->pf_current_page >> - (intel_fb->pf_planes & 0x2)) & 0x3) % - intel_fb->pf_num_pages; - } - - ret = GL_FALSE; - } - - UNLOCK_HARDWARE(intel); - - return ret; -} - -void -intelSwapBuffers(__DRIdrawablePrivate * dPriv) -{ - 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) { - intelScreenPrivate *screen = intel->intelScreen; - GLboolean missed_target; - struct intel_framebuffer *intel_fb = dPriv->driverPrivate; - int64_t ust; - - _mesa_notifySwapBuffers(ctx); /* flush pending rendering comands */ - - if (screen->current_rotation != 0 || - !intelScheduleSwap(dPriv, &missed_target)) { - driWaitForVBlank(dPriv, &missed_target); - - if (screen->current_rotation != 0 || !intelPageFlip(dPriv)) { - intelCopyBuffer(dPriv, NULL); - } - - if (screen->current_rotation != 0) { - intelRotateWindow(intel, dPriv, BUFFER_BIT_FRONT_LEFT); - } - } - - intel_fb->swap_count++; - (*dri_interface->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; - } - } - 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__); - } -} -#endif - -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__); - } -} - - -/** - * Update the hardware state for drawing into a window or framebuffer object. - * - * Called by glDrawBuffer, glBindFramebufferEXT, MakeCurrent, and other - * places within the driver. - * - * Basically, this needs to be called any time the current framebuffer - * changes, the renderbuffers change, or we need to draw into different - * color buffers. - */ -void -intel_draw_buffer(GLcontext * ctx, struct gl_framebuffer *fb) -{ - struct intel_context *intel = intel_context(ctx); - struct intel_region *colorRegion, *depthRegion = NULL; - struct intel_renderbuffer *irbDepth = NULL, *irbStencil = NULL; - int front = 0; /* drawing to front color buffer? */ - - if (!fb) { - /* this can happen during the initial context initialization */ - return; - } - - /* Do this here, note core Mesa, since this function is called from - * many places within the driver. - */ - if (ctx->NewState & (_NEW_BUFFERS | _NEW_COLOR | _NEW_PIXEL)) { - /* this updates the DrawBuffer->_NumColorDrawBuffers fields, etc */ - _mesa_update_framebuffer(ctx); - /* this updates the DrawBuffer's Width/Height if it's a FBO */ - _mesa_update_draw_buffer_bounds(ctx); - } - - if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) { - /* this may occur when we're called by glBindFrameBuffer() during - * the process of someone setting up renderbuffers, etc. - */ - /*_mesa_debug(ctx, "DrawBuffer: incomplete user FBO\n");*/ - return; - } - - if (fb->Name) - intel_validate_paired_depth_stencil(ctx, fb); - - /* - * How many color buffers are we drawing into? - */ - if (fb->_NumColorDrawBuffers[0] != 1 -#if 0 - /* XXX FBO temporary - always use software rendering */ - || 1 -#endif - ) { - /* writing to 0 or 2 or 4 color buffers */ - /*_mesa_debug(ctx, "Software rendering\n");*/ - FALLBACK(intel, INTEL_FALLBACK_DRAW_BUFFER, GL_TRUE); - front = 1; /* might not have back color buffer */ - } - else { - /* draw to exactly one color buffer */ - /*_mesa_debug(ctx, "Hardware rendering\n");*/ - FALLBACK(intel, INTEL_FALLBACK_DRAW_BUFFER, GL_FALSE); - if (fb->_ColorDrawBufferMask[0] == BUFFER_BIT_FRONT_LEFT) { - front = 1; - } - } - - /* - * Get the intel_renderbuffer for the colorbuffer we're drawing into. - * And set up cliprects. - */ - if (fb->Name == 0) { - /* drawing to window system buffer */ - if (front) { - intelSetFrontClipRects(intel); - colorRegion = intel_get_rb_region(fb, BUFFER_FRONT_LEFT); - } - else { - intelSetBackClipRects(intel); - colorRegion = intel_get_rb_region(fb, BUFFER_BACK_LEFT); - } - } - else { - /* drawing to user-created FBO */ - struct intel_renderbuffer *irb; - intelSetRenderbufferClipRects(intel); - irb = intel_renderbuffer(fb->_ColorDrawBuffers[0][0]); - colorRegion = (irb && irb->region) ? irb->region : NULL; - } - - /* Update culling direction which changes depending on the - * orientation of the buffer: - */ - if (ctx->Driver.FrontFace) - ctx->Driver.FrontFace(ctx, ctx->Polygon.FrontFace); - else - ctx->NewState |= _NEW_POLYGON; - - if (!colorRegion) { - FALLBACK(intel, INTEL_FALLBACK_DRAW_BUFFER, GL_TRUE); - } - else { - FALLBACK(intel, INTEL_FALLBACK_DRAW_BUFFER, GL_FALSE); - } - - /*** - *** Get depth buffer region and check if we need a software fallback. - *** Note that the depth buffer is usually a DEPTH_STENCIL buffer. - ***/ - if (fb->_DepthBuffer && fb->_DepthBuffer->Wrapped) { - irbDepth = intel_renderbuffer(fb->_DepthBuffer->Wrapped); - if (irbDepth && irbDepth->region) { - FALLBACK(intel, INTEL_FALLBACK_DEPTH_BUFFER, GL_FALSE); - depthRegion = irbDepth->region; - } - else { - FALLBACK(intel, INTEL_FALLBACK_DEPTH_BUFFER, GL_TRUE); - depthRegion = NULL; - } - } - else { - /* not using depth buffer */ - FALLBACK(intel, INTEL_FALLBACK_DEPTH_BUFFER, GL_FALSE); - depthRegion = NULL; - } - - /*** - *** Stencil buffer - *** This can only be hardware accelerated if we're using a - *** combined DEPTH_STENCIL buffer (for now anyway). - ***/ - if (fb->_StencilBuffer && fb->_StencilBuffer->Wrapped) { - irbStencil = intel_renderbuffer(fb->_StencilBuffer->Wrapped); - if (irbStencil && irbStencil->region) { - ASSERT(irbStencil->Base._ActualFormat == GL_DEPTH24_STENCIL8_EXT); - FALLBACK(intel, INTEL_FALLBACK_STENCIL_BUFFER, GL_FALSE); - /* need to re-compute stencil hw state */ - ctx->Driver.Enable(ctx, GL_STENCIL_TEST, ctx->Stencil.Enabled); - if (!depthRegion) - depthRegion = irbStencil->region; - } - else { - FALLBACK(intel, INTEL_FALLBACK_STENCIL_BUFFER, GL_TRUE); - } - } - else { - /* XXX FBO: instead of FALSE, pass ctx->Stencil.Enabled ??? */ - FALLBACK(intel, INTEL_FALLBACK_STENCIL_BUFFER, GL_FALSE); - /* need to re-compute stencil hw state */ - ctx->Driver.Enable(ctx, GL_STENCIL_TEST, ctx->Stencil.Enabled); - } - - /* - * Update depth test state - */ - if (ctx->Depth.Test && fb->Visual.depthBits > 0) { - ctx->Driver.Enable(ctx, GL_DEPTH_TEST, GL_TRUE); - } - else { - ctx->Driver.Enable(ctx, GL_DEPTH_TEST, GL_FALSE); - } - - /** - ** Release old regions, reference new regions - **/ -#if 0 /* XXX FBO: this seems to be redundant with i915_state_draw_region() */ - if (intel->draw_region != colorRegion) { - intel_region_release(&intel->draw_region); - intel_region_reference(&intel->draw_region, colorRegion); - } - if (intel->intelScreen->depth_region != depthRegion) { - intel_region_release(&intel->intelScreen->depth_region); - intel_region_reference(&intel->intelScreen->depth_region, depthRegion); - } -#endif - - intel->vtbl.set_draw_region(intel, colorRegion, depthRegion); - - /* update viewport since it depends on window size */ - ctx->Driver.Viewport(ctx, ctx->Viewport.X, ctx->Viewport.Y, - ctx->Viewport.Width, ctx->Viewport.Height); - - /* Update hardware scissor */ - ctx->Driver.Scissor(ctx, ctx->Scissor.X, ctx->Scissor.Y, - ctx->Scissor.Width, ctx->Scissor.Height); -} - - -static void -intelDrawBuffer(GLcontext * ctx, GLenum mode) -{ - intel_draw_buffer(ctx, ctx->DrawBuffer); -} - - -static void -intelReadBuffer(GLcontext * ctx, GLenum mode) -{ - if (ctx->ReadBuffer == ctx->DrawBuffer) { - /* This will update FBO completeness status. - * A framebuffer will be incomplete if the GL_READ_BUFFER setting - * refers to a missing renderbuffer. Calling glReadBuffer can set - * that straight and can make the drawing buffer complete. - */ - intel_draw_buffer(ctx, ctx->DrawBuffer); - } - /* Generally, functions which read pixels (glReadPixels, glCopyPixels, etc) - * reference ctx->ReadBuffer and do appropriate state checks. - */ -} - - -void -intelInitBufferFuncs(struct dd_function_table *functions) -{ - functions->Clear = intelClear; - functions->DrawBuffer = intelDrawBuffer; - functions->ReadBuffer = intelReadBuffer; -} +../intel/intel_buffers.c
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