intel_batchbuffer.c

mesa-6.5-minigui源码

/**************************************************************************
 * 
 * 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 <stdio.h>
#include <errno.h>

#include "mtypes.h"
#include "context.h"
#include "enums.h"
#include "vblank.h"

#include "intel_reg.h"
#include "intel_batchbuffer.h"
#include "intel_context.h"




/* ================================================================
 * Performance monitoring functions
 */

static void intel_fill_box( intelContextPtr intel,
			    GLshort x, GLshort y,
			    GLshort w, GLshort h,
			    GLubyte r, GLubyte g, GLubyte b )
{
   x += intel->drawX;
   y += intel->drawY;

   if (x >= 0 && y >= 0 &&
       x+w < intel->intelScreen->width &&
       y+h < intel->intelScreen->height)
      intelEmitFillBlitLocked( intel, 
			       intel->intelScreen->cpp,
			       intel->intelScreen->back.pitch,
			       intel->intelScreen->back.offset,
			       x, y, w, h,
			       INTEL_PACKCOLOR(intel->intelScreen->fbFormat,
					       r,g,b,0xff));
}

static void intel_draw_performance_boxes( intelContextPtr intel )
{
   /* Purple box for page flipping
    */
   if ( intel->perf_boxes & I830_BOX_FLIP ) 
      intel_fill_box( intel, 4, 4, 8, 8, 255, 0, 255 );

   /* Red box if we have to wait for idle at any point
    */
   if ( intel->perf_boxes & I830_BOX_WAIT ) 
      intel_fill_box( intel, 16, 4, 8, 8, 255, 0, 0 );

   /* Blue box: lost context?
    */
   if ( intel->perf_boxes & I830_BOX_LOST_CONTEXT ) 
      intel_fill_box( intel, 28, 4, 8, 8, 0, 0, 255 );

   /* Yellow box for texture swaps
    */
   if ( intel->perf_boxes & I830_BOX_TEXTURE_LOAD ) 
      intel_fill_box( intel, 40, 4, 8, 8, 255, 255, 0 );

   /* Green box if hardware never idles (as far as we can tell)
    */
   if ( !(intel->perf_boxes & I830_BOX_RING_EMPTY) ) 
      intel_fill_box( intel, 64, 4, 8, 8, 0, 255, 0 );


   /* Draw bars indicating number of buffers allocated 
    * (not a great measure, easily confused)
    */
#if 0
   if (intel->dma_used) {
      int bar = intel->dma_used / 10240;
      if (bar > 100) bar = 100;
      if (bar < 1) bar = 1;
      intel_fill_box( intel, 4, 16, bar, 4, 196, 128, 128 );
      intel->dma_used = 0;
   }
#endif

   intel->perf_boxes = 0;
}






static int bad_prim_vertex_nr( int primitive, int nr )
{
   switch (primitive & PRIM3D_MASK) {
   case PRIM3D_POINTLIST:
      return nr < 1;
   case PRIM3D_LINELIST:
      return (nr & 1) || nr == 0;
   case PRIM3D_LINESTRIP:
      return nr < 2;
   case PRIM3D_TRILIST:
   case PRIM3D_RECTLIST:
      return nr % 3 || nr == 0;
   case PRIM3D_POLY:
   case PRIM3D_TRIFAN:
   case PRIM3D_TRISTRIP:
   case PRIM3D_TRISTRIP_RVRSE:
      return nr < 3;
   default:
      return 1;
   }	
}

static void intel_flush_inline_primitive( GLcontext *ctx )
{
   intelContextPtr intel = INTEL_CONTEXT( ctx );
   GLuint used = intel->batch.ptr - intel->prim.start_ptr;
   GLuint vertcount;

   assert(intel->prim.primitive != ~0);

   if (1) {
      /* Check vertex size against the vertex we're specifying to
       * hardware.  If it's wrong, ditch the primitive.
       */ 
      if (!intel->vtbl.check_vertex_size( intel, intel->vertex_size )) 
	 goto do_discard;

      vertcount = (used - 4)/ (intel->vertex_size * 4);

      if (!vertcount)
	 goto do_discard;
      
      if (vertcount * intel->vertex_size * 4 != used - 4) {
	 fprintf(stderr, "vertex size confusion %d %d\n", used, 
		 intel->vertex_size * vertcount * 4);
	 goto do_discard;
      }

      if (bad_prim_vertex_nr( intel->prim.primitive, vertcount )) {
	 fprintf(stderr, "bad_prim_vertex_nr %x %d\n", intel->prim.primitive,
		 vertcount);
	 goto do_discard;
      }
   }

   if (used < 8)
      goto do_discard;

   *(int *)intel->prim.start_ptr = (_3DPRIMITIVE | 
				    intel->prim.primitive |
				    (used/4-2));

   goto finished;
   
 do_discard:
   intel->batch.ptr -= used;
   intel->batch.space += used;
   assert(intel->batch.space >= 0);

 finished:
   intel->prim.primitive = ~0;
   intel->prim.start_ptr = 0;
   intel->prim.flush = 0;
}


/* Emit a primitive referencing vertices in a vertex buffer.
 */
void intelStartInlinePrimitive( intelContextPtr intel, GLuint prim )
{
   BATCH_LOCALS;

   if (0)
      fprintf(stderr, "%s %x\n", __FUNCTION__, prim);


   /* Finish any in-progress primitive:
    */
   INTEL_FIREVERTICES( intel );
   
   /* Emit outstanding state:
    */
   intel->vtbl.emit_state( intel );
   
   /* Make sure there is some space in this buffer:
    */
   if (intel->vertex_size * 10 * sizeof(GLuint) >= intel->batch.space) {
      intelFlushBatch(intel, GL_TRUE); 
      intel->vtbl.emit_state( intel );
   }

#if 1
   if (((int)intel->batch.ptr) & 0x4) {
      BEGIN_BATCH(1);
      OUT_BATCH(0);
      ADVANCE_BATCH();
   }
#endif

   /* Emit a slot which will be filled with the inline primitive
    * command later.
    */
   BEGIN_BATCH(2);
   OUT_BATCH( 0 );

   intel->prim.start_ptr = batch_ptr;
   intel->prim.primitive = prim;
   intel->prim.flush = intel_flush_inline_primitive;
   intel->batch.contains_geometry = 1;

   OUT_BATCH( 0 );
   ADVANCE_BATCH();
}


void intelRestartInlinePrimitive( intelContextPtr intel )
{
   GLuint prim = intel->prim.primitive;

   intel_flush_inline_primitive( &intel->ctx );
   if (1) intelFlushBatch(intel, GL_TRUE); /* GL_TRUE - is critical */
   intelStartInlinePrimitive( intel, prim );
}



void intelWrapInlinePrimitive( intelContextPtr intel )
{
   GLuint prim = intel->prim.primitive;

   if (0)
      fprintf(stderr, "%s\n", __FUNCTION__);
   intel_flush_inline_primitive( &intel->ctx );
   intelFlushBatch(intel, GL_TRUE);
   intelStartInlinePrimitive( intel, prim );
}


/* Emit a primitive with space for inline vertices.
 */
GLuint *intelEmitInlinePrimitiveLocked(intelContextPtr intel, 
				       int primitive,
				       int dwords,
				       int vertex_size )
{
   GLuint *tmp = 0;
   BATCH_LOCALS;

   if (0)
      fprintf(stderr, "%s 0x%x %d\n", __FUNCTION__, primitive, dwords);

   /* Emit outstanding state:
    */
   intel->vtbl.emit_state( intel );

   if ((1+dwords)*4 >= intel->batch.space) {
      intelFlushBatch(intel, GL_TRUE); 
      intel->vtbl.emit_state( intel );
   }


   if (1) {
      int used = dwords * 4;
      int vertcount;

      /* Check vertex size against the vertex we're specifying to
       * hardware.  If it's wrong, ditch the primitive.
       */ 
      if (!intel->vtbl.check_vertex_size( intel, vertex_size )) 
	 goto do_discard;

      vertcount = dwords / vertex_size;
      
      if (dwords % vertex_size) {
	 fprintf(stderr, "did not request a whole number of vertices\n");
	 goto do_discard;
      }

      if (bad_prim_vertex_nr( primitive, vertcount )) {
	 fprintf(stderr, "bad_prim_vertex_nr %x %d\n", primitive, vertcount);
	 goto do_discard;
      }

      if (used < 8)
	 goto do_discard;
   }

   /* Emit 3D_PRIMITIVE commands:
    */
   BEGIN_BATCH(1 + dwords);
   OUT_BATCH( _3DPRIMITIVE | 
	      primitive |
	      (dwords-1) );

   tmp = (GLuint *)batch_ptr;
   batch_ptr += dwords * 4;

   ADVANCE_BATCH();

   intel->batch.contains_geometry = 1;

 do_discard:
   return tmp;
}


static void intelWaitForFrameCompletion( intelContextPtr intel )
{
  drm_i915_sarea_t *sarea = (drm_i915_sarea_t *)intel->sarea;

   if (intel->do_irqs) {
      if (intelGetLastFrame(intel) < sarea->last_dispatch) {
	 if (!intel->irqsEmitted) {
	    while (intelGetLastFrame (intel) < sarea->last_dispatch)
	       ;
	 }
	 else {
	    UNLOCK_HARDWARE( intel ); 
	    intelWaitIrq( intel, intel->alloc.irq_emitted );	
	    LOCK_HARDWARE( intel ); 
	 }
	 intel->irqsEmitted = 10;
      }

      if (intel->irqsEmitted) {
	 intelEmitIrqLocked( intel );
	 intel->irqsEmitted--;
      }
   } 
   else {
      while (intelGetLastFrame (intel) < sarea->last_dispatch) {
	 UNLOCK_HARDWARE( intel ); 
	 if (intel->do_usleeps) 
	    DO_USLEEP( 1 );
	 LOCK_HARDWARE( intel ); 
      }
   }
}

/*
 * Copy the back buffer to the front buffer. 
 */
void intelCopyBuffer( const __DRIdrawablePrivate *dPriv,
		      const drm_clip_rect_t	 *rect)
{
   intelContextPtr intel;
   GLboolean   missed_target;
   int64_t ust;

   if (0)
      fprintf(stderr, "%s\n", __FUNCTION__);

   assert(dPriv);
   assert(dPriv->driContextPriv);
   assert(dPriv->driContextPriv->driverPrivate);

   intel = (intelContextPtr) dPriv->driContextPriv->driverPrivate;

   intelFlush( &intel->ctx );
   
   LOCK_HARDWARE( intel );
   intelWaitForFrameCompletion( intel );

   if (!rect)
   {
       UNLOCK_HARDWARE( intel );
       driWaitForVBlank( dPriv, &intel->vbl_seq, intel->vblank_flags, & missed_target );
       LOCK_HARDWARE( intel );
   }