[intel] Move over files that will be shared with 965-fbo work.

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
\ No newline at end of file