r200_texmem.c

Mesa is an open-source implementation of the OpenGL specification - a system for rendering interacti

/**************************************************************************

Copyright (C) Tungsten Graphics 2002.  All Rights Reserved.  
The Weather Channel, Inc. funded Tungsten Graphics to develop the
initial release of the Radeon 8500 driver under the XFree86
license. This notice must be preserved.

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
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The above copyright notice and this permission notice (including the
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**************************************************************************/

/*
 * Authors:
 *   Kevin E. Martin <[e-mail]>
 *   Gareth Hughes <[e-mail]>
 *
 */
 
#include <errno.h>

#include "glheader.h"
#include "imports.h"
#include "context.h"
#include "colormac.h"
#include "macros.h"
#include "r200_context.h"
#include "r200_ioctl.h"
#include "r200_tex.h"
#include "radeon_reg.h"

#include <unistd.h>  /* for usleep() */


/**
 * Destroy any device-dependent state associated with the texture.  This may
 * include NULLing out hardware state that points to the texture.
 */
void
r200DestroyTexObj( r200ContextPtr rmesa, r200TexObjPtr t )
{
   if ( R200_DEBUG & DEBUG_TEXTURE ) {
      fprintf( stderr, "%s( %p, %p )\n", __FUNCTION__, 
	       (void *)t, (void *)t->base.tObj );
   }

   if ( rmesa != NULL ) {
      unsigned   i;


      for ( i = 0 ; i < rmesa->glCtx->Const.MaxTextureUnits ; i++ ) {
	 if ( t == rmesa->state.texture.unit[i].texobj ) {
	    rmesa->state.texture.unit[i].texobj = NULL;
	    rmesa->hw.tex[i].dirty = GL_FALSE;
	    rmesa->hw.cube[i].dirty = GL_FALSE;
	 }
      }
   }
}


/* ------------------------------------------------------------
 * Texture image conversions
 */


static void r200UploadGARTClientSubImage( r200ContextPtr rmesa,
					  r200TexObjPtr t, 
					  struct gl_texture_image *texImage,
					  GLint hwlevel,
					  GLint x, GLint y, 
					  GLint width, GLint height )
{
   const struct gl_texture_format *texFormat = texImage->TexFormat;
   GLuint srcPitch, dstPitch;
   int blit_format;
   int srcOffset;

   /*
    * XXX it appears that we always upload the full image, not a subimage.
    * I.e. x==0, y==0, width=texWidth, height=texWidth.  If this is ever
    * changed, the src pitch will have to change.
    */
   switch ( texFormat->TexelBytes ) {
   case 1:
      blit_format = R200_CP_COLOR_FORMAT_CI8;
      srcPitch = t->image[0][0].width * texFormat->TexelBytes;
      dstPitch = t->image[0][0].width * texFormat->TexelBytes;
      break;
   case 2:
      blit_format = R200_CP_COLOR_FORMAT_RGB565;
      srcPitch = t->image[0][0].width * texFormat->TexelBytes;
      dstPitch = t->image[0][0].width * texFormat->TexelBytes;
      break;
   case 4:
      blit_format = R200_CP_COLOR_FORMAT_ARGB8888;
      srcPitch = t->image[0][0].width * texFormat->TexelBytes;
      dstPitch = t->image[0][0].width * texFormat->TexelBytes;
      break;
   default:
      return;
   }

   t->image[0][hwlevel].data = texImage->Data;
   srcOffset = r200GartOffsetFromVirtual( rmesa, texImage->Data );

   assert( srcOffset != ~0 );

   /* Don't currently need to cope with small pitches?
    */
   width = texImage->Width;
   height = texImage->Height;

   r200EmitWait( rmesa, RADEON_WAIT_3D );

   r200EmitBlit( rmesa, blit_format, 
		 srcPitch,  
		 srcOffset,   
		 dstPitch,
		 t->bufAddr,
		 x, 
		 y, 
		 t->image[0][hwlevel].x + x,
		 t->image[0][hwlevel].y + y, 
		 width,
		 height );

   r200EmitWait( rmesa, RADEON_WAIT_2D );
}

static void r200UploadRectSubImage( r200ContextPtr rmesa,
				    r200TexObjPtr t, 
				    struct gl_texture_image *texImage,
				    GLint x, GLint y, 
				    GLint width, GLint height )
{
   const struct gl_texture_format *texFormat = texImage->TexFormat;
   int blit_format, dstPitch, done;

   switch ( texFormat->TexelBytes ) {
   case 1:
      blit_format = R200_CP_COLOR_FORMAT_CI8;
      break;
   case 2:
      blit_format = R200_CP_COLOR_FORMAT_RGB565;
      break;
   case 4:
      blit_format = R200_CP_COLOR_FORMAT_ARGB8888;
      break;
   default:
      return;
   }

   t->image[0][0].data = texImage->Data;

   /* Currently don't need to cope with small pitches.
    */
   width = texImage->Width;
   height = texImage->Height;
   dstPitch = t->pp_txpitch + 32;

   if (rmesa->prefer_gart_client_texturing && texImage->IsClientData) {
      /* In this case, could also use GART texturing.  This is
       * currently disabled, but has been tested & works.
       */
      if ( !t->image_override )
         t->pp_txoffset = r200GartOffsetFromVirtual( rmesa, texImage->Data );
      t->pp_txpitch = texImage->RowStride * texFormat->TexelBytes - 32;

      if (R200_DEBUG & DEBUG_TEXTURE)
	 fprintf(stderr, 
		 "Using GART texturing for rectangular client texture\n");

      /* Release FB memory allocated for this image:
       */
      /* FIXME This may not be correct as driSwapOutTextureObject sets
       * FIXME dirty_images.  It may be fine, though.
       */
      if ( t->base.memBlock ) {
	 driSwapOutTextureObject( (driTextureObject *) t );
      }
   }
   else if (texImage->IsClientData) {
      /* Data already in GART memory, with usable pitch.
       */
      GLuint srcPitch;
      srcPitch = texImage->RowStride * texFormat->TexelBytes;
      r200EmitBlit( rmesa, 
		    blit_format, 
		    srcPitch,
		    r200GartOffsetFromVirtual( rmesa, texImage->Data ),   
		    dstPitch, t->bufAddr,
		    0, 0, 
		    0, 0, 
		    width, height );
   }
   else {
      /* Data not in GART memory, or bad pitch.
       */
      for (done = 0; done < height ; ) {
	 struct r200_dma_region region;
	 int lines = MIN2( height - done, RADEON_BUFFER_SIZE / dstPitch );
	 int src_pitch;
	 char *tex;

         src_pitch = texImage->RowStride * texFormat->TexelBytes;

	 tex = (char *)texImage->Data + done * src_pitch;

	 memset(&region, 0, sizeof(region));
	 r200AllocDmaRegion( rmesa, &region, lines * dstPitch, 1024 );

	 /* Copy texdata to dma:
	  */
	 if (0)
	    fprintf(stderr, "%s: src_pitch %d dst_pitch %d\n",
		    __FUNCTION__, src_pitch, dstPitch);

	 if (src_pitch == dstPitch) {
	    memcpy( region.address + region.start, tex, lines * src_pitch );
	 } 
	 else {
	    char *buf = region.address + region.start;
	    int i;
	    for (i = 0 ; i < lines ; i++) {
	       memcpy( buf, tex, src_pitch );
	       buf += dstPitch;
	       tex += src_pitch;
	    }
	 }

	 r200EmitWait( rmesa, RADEON_WAIT_3D );

	 /* Blit to framebuffer
	  */
	 r200EmitBlit( rmesa,
		       blit_format,
		       dstPitch, GET_START( &region ),
		       dstPitch | (t->tile_bits >> 16),
		       t->bufAddr,
		       0, 0,
		       0, done,
		       width, lines );
	 
	 r200EmitWait( rmesa, RADEON_WAIT_2D );

	 r200ReleaseDmaRegion( rmesa, &region, __FUNCTION__ );
	 done += lines;