path: root/src/mesa/drivers/dri/radeon/radeon_texmem.c

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

Copyright 2000, 2001 ATI Technologies Inc., Ontario, Canada, and
                     VA Linux Systems Inc., Fremont, California.

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

/*
 * Authors:
 *   Kevin E. Martin <martin@valinux.com>
 *   Gareth Hughes <gareth@valinux.com>
 *
 */
#include <errno.h> 

#include "glheader.h"
#include "imports.h"
#include "context.h"
#include "macros.h"

#include "radeon_context.h"
#include "radeon_ioctl.h"
#include "radeon_tex.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
radeonDestroyTexObj( radeonContextPtr rmesa, radeonTexObjPtr t )
{
   if ( RADEON_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;
	 }
      }
   }
}


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


static void radeonUploadRectSubImage( radeonContextPtr rmesa,
				      radeonTexObjPtr 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 = RADEON_GMC_DST_8BPP_CI;
      break;
   case 2:
      blit_format = RADEON_GMC_DST_16BPP;
      break;
   case 4:
      blit_format = RADEON_GMC_DST_32BPP;
      break;
   default:
      fprintf( stderr, "radeonUploadRectSubImage: unknown blit_format (texelbytes=%d)\n", 
      	       texFormat->TexelBytes);
      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;

   {	/* FIXME: prefer GART-texturing if possible */
      /* Data not in GART memory, or bad pitch.
       */
      for (done = 0; done < height ; ) {
	 struct radeon_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));
	 radeonAllocDmaRegion( 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;
	    }
	 }

	 radeonEmitWait( rmesa, RADEON_WAIT_3D );

	 

	 /* Blit to framebuffer
	  */
	 radeonEmitBlit( rmesa,
		       blit_format,
		       dstPitch, GET_START( &region ),
		       dstPitch, t->bufAddr,
		       0, 0,
		       0, done,
		       width, lines );
	 
	 radeonEmitWait( rmesa, RADEON_WAIT_2D );

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


/**
 * Upload the texture image associated with texture \a t at the specified
 * level at the address relative to \a start.
 */
static void uploadSubImage( radeonContextPtr rmesa, radeonTexObjPtr t, 
			    GLint hwlevel,
			    GLint x, GLint y, GLint width, GLint height,
			    GLuint face )
{
   struct gl_texture_image *texImage = NULL;
   GLuint offset;
   GLint imageWidth, imageHeight;
   GLint ret;
   drm_radeon_texture_t tex;
   drm_radeon_tex_image_t tmp;
   const int level = hwlevel + t->base.firstLevel;

   if ( RADEON_DEBUG & DEBUG_TEXTURE ) {
      fprintf( stderr, "%s( %p, %p ) level/width/height/face = %d/%d/%d/%u\n", 
	       __FUNCTION__, (void *)t, (void *)t->base.tObj, level, width, height, face );
   }

   ASSERT(face < 6);

   /* Ensure we have a valid texture to upload */
   if ( ( hwlevel < 0 ) || ( hwlevel >= RADEON_MAX_TEXTURE_LEVELS ) ) {
      _mesa_problem(NULL, "bad texture level in %s", __FUNCTION__);
      return;
   }

   texImage = t->base.tObj->Image[face][level];

   if ( !texImage ) {
      if ( RADEON_DEBUG & DEBUG_TEXTURE )
	 fprintf( stderr, "%s: texImage %d is NULL!\n", __FUNCTION__, level );
      return;
   }
   if ( !texImage->Data ) {
      if ( RADEON_DEBUG & DEBUG_TEXTURE )
	 fprintf( stderr, "%s: image data is NULL!\n", __FUNCTION__ );
      return;
   }


   if (t->base.tObj->Target == GL_TEXTURE_RECTANGLE_NV) {
      assert(level == 0);
      assert(hwlevel == 0);
      if ( RADEON_DEBUG & DEBUG_TEXTURE )
	 fprintf( stderr, "%s: image data is rectangular\n", __FUNCTION__);
      radeonUploadRectSubImage( rmesa, t, texImage, x, y, width, height );
      return;
   }

   imageWidth = texImage->Width;
   imageHeight = texImage->Height;

   offset = t->bufAddr + t->base.totalSize * face / 6;

   if ( RADEON_DEBUG & (DEBUG_TEXTURE|DEBUG_IOCTL) ) {
      GLint imageX = 0;
      GLint imageY = 0;
      GLint blitX = t->image[face][hwlevel].x;
      GLint blitY = t->image[face][hwlevel].y;
      GLint blitWidth = t->image[face][hwlevel].width;
      GLint blitHeight = t->image[face][hwlevel].height;
      fprintf( stderr, "   upload image: %d,%d at %d,%d\n",
	       imageWidth, imageHeight, imageX, imageY );
      fprintf( stderr, "   upload  blit: %d,%d at %d,%d\n",
	       blitWidth, blitHeight, blitX, blitY );
      fprintf( stderr, "       blit ofs: 0x%07x level: %d/%d\n",
	       (GLuint)offset, hwlevel, level );
   }

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

   /* Init the DRM_RADEON_TEXTURE command / drm_radeon_texture_t struct.
    * NOTE: we're always use a 1KB-wide blit and I8 texture format.
    * We used to use 1, 2 and 4-byte texels and used to use the texture
    * width to dictate the blit width - but that won't work for compressed
    * textures. (Brian)
    * NOTE: can't do that with texture tiling. (sroland)
    */
   tex.offset = offset;
   tex.image = &tmp;
   /* copy (x,y,width,height,data) */
   memcpy( &tmp, &t->image[face][hwlevel], sizeof(drm_radeon_tex_image_t) );

   if (texImage->TexFormat->TexelBytes) {
      /* use multi-byte upload scheme */
      tex.height = imageHeight;
      tex.width = imageWidth;
      tex.format = t->pp_txformat & RADEON_TXFORMAT_FORMAT_MASK;
      tex.pitch = MAX2((texImage->Width * texImage->TexFormat->TexelBytes) / 64, 1);
      tex.offset += tmp.x & ~1023;
      tmp.x = tmp.x % 1024;
      if (t->tile_bits & RADEON_TXO_MICRO_TILE_X2) {
	 /* need something like "tiled coordinates" ? */
	 tmp.y = tmp.x / (tex.pitch * 128) * 2;
	 tmp.x = tmp.x % (tex.pitch * 128) / 2 / texImage->TexFormat->TexelBytes;
	 tex.pitch |= RADEON_DST_TILE_MICRO >> 22;
      }
      else {
	 tmp.x = tmp.x >> (texImage->TexFormat->TexelBytes >> 1);
      }
      if ((t->tile_bits & RADEON_TXO_MACRO_TILE) &&
	 (texImage->Width * texImage->TexFormat->TexelBytes >= 256)) {
	 /* radeon switches off macro tiling for small textures/mipmaps it seems */
	 tex.pitch |= RADEON_DST_TILE_MACRO >> 22;
      }
   }
   else {
      /* In case of for instance 8x8 texture (2x2 dxt blocks), padding after the first two blocks is
         needed (only with dxt1 since 2 dxt3/dxt5 blocks already use 32 Byte). */
      /* set tex.height to 1/4 since 1 "macropixel" (dxt-block) has 4 real pixels. Needed
         so the kernel module reads the right amount of data. */
      tex.format = RADEON_TXFORMAT_I8; /* any 1-byte texel format */
      tex.pitch = (BLIT_WIDTH_BYTES / 64);
      tex.height = (imageHeight + 3) / 4;
      tex.width = (imageWidth + 3) / 4;
      switch (t->pp_txformat & RADEON_TXFORMAT_FORMAT_MASK) {
      case RADEON_TXFORMAT_DXT1:
         tex.width *= 8;
         break;
      case RADEON_TXFORMAT_DXT23:
      case RADEON_TXFORMAT_DXT45:
         tex.width *= 16;
         break;
      }
   }

   LOCK_HARDWARE( rmesa );
   do {
      ret = drmCommandWriteRead( rmesa->dri.fd, DRM_RADEON_TEXTURE,
                                 &tex, sizeof(drm_radeon_texture_t) );
   } while ( ret == -EAGAIN );

   UNLOCK_HARDWARE( rmesa );

   if ( ret ) {
      fprintf( stderr, "DRM_RADEON_TEXTURE: return = %d\n", ret );
      fprintf( stderr, "   offset=0x%08x\n",
	       offset );
      fprintf( stderr, "   image width=%d height=%d\n",
	       imageWidth, imageHeight );
      fprintf( stderr, "    blit width=%d height=%d data=%p\n",
	       t->image[face][hwlevel].width, t->image[face][hwlevel].height,
	       t->image[face][hwlevel].data );
      exit( 1 );
   }
}


/**
 * Upload the texture images associated with texture \a t.  This might
 * require the allocation of texture memory.
 * 
 * \param rmesa Context pointer
 * \param t Texture to be uploaded
 * \param face Cube map face to be uploaded.  Zero for non-cube maps.
 */

int radeonUploadTexImages( radeonContextPtr rmesa, radeonTexObjPtr t, GLuint face )
{
   int numLevels;

   if ( !t || t->base.totalSize == 0 )
      return 0;

   if ( RADEON_DEBUG & (DEBUG_TEXTURE|DEBUG_IOCTL) ) {
      fprintf( stderr, "%s( %p, %p ) sz=%d lvls=%d-%d\n", __FUNCTION__,
	       (void *)rmesa->glCtx, (void *)t->base.tObj, t->base.totalSize,
	       t->base.firstLevel, t->base.lastLevel );
   }

   numLevels = t->base.lastLevel - t->base.firstLevel + 1;

   if (RADEON_DEBUG & DEBUG_SYNC) {
      fprintf(stderr, "%s: Syncing\n", __FUNCTION__ );
      radeonFinish( rmesa->glCtx );
   }

   LOCK_HARDWARE( rmesa );

   if ( t->base.memBlock == NULL ) {
      int heap;

      heap = driAllocateTexture( rmesa->texture_heaps, rmesa->nr_heaps,
				 (driTextureObject *) t );
      if ( heap == -1 ) {
	 UNLOCK_HARDWARE( rmesa );
	 return -1;
      }

      /* Set the base offset of the texture image */
      t->bufAddr = rmesa->radeonScreen->texOffset[heap] 
	   + t->base.memBlock->ofs;
      t->pp_txoffset = t->bufAddr;

      if (!(t->base.tObj->Image[0][0]->IsClientData)) {
	 /* hope it's safe to add that here... */
	 t->pp_txoffset |= t->tile_bits;
      }

      /* Mark this texobj as dirty on all units:
       */
      t->dirty_state = TEX_ALL;
   }


   /* Let the world know we've used this memory recently.
    */
   driUpdateTextureLRU( (driTextureObject *) t );
   UNLOCK_HARDWARE( rmesa );


   /* Upload any images that are new */
   if (t->base.dirty_images[face]) {
      int i;
      for ( i = 0 ; i < numLevels ; i++ ) {
         if ( (t->base.dirty_images[face] & (1 << (i+t->base.firstLevel))) != 0 ) {
            uploadSubImage( rmesa, t, i, 0, 0, t->image[face][i].width,
			    t->image[face][i].height, face );
         }
      }
      t->base.dirty_images[face] = 0;
   }

   if (RADEON_DEBUG & DEBUG_SYNC) {
      fprintf(stderr, "%s: Syncing\n", __FUNCTION__ );
      radeonFinish( rmesa->glCtx );
   }

   return 0;
}