i830_metaops.c

mesa-6.5-minigui源码

   }

   UNLOCK_HARDWARE(intel);

   INTEL_FIREVERTICES(intel);
   SET_STATE( i830, state );
}


#if 0

GLboolean
i830TryTextureReadPixels( GLcontext *ctx,
			  GLint x, GLint y, GLsizei width, GLsizei height,
			  GLenum format, GLenum type,
			  const struct gl_pixelstore_attrib *pack,
			  GLvoid *pixels )
{
   i830ContextPtr i830 = I830_CONTEXT(ctx);
   intelContextPtr intel = INTEL_CONTEXT(ctx);
   intelScreenPrivate *screen = i830->intel.intelScreen;
   GLint pitch = pack->RowLength ? pack->RowLength : width;
   __DRIdrawablePrivate *dPriv = i830->intel.driDrawable;
   int textureFormat;
   GLenum glTextureFormat;
   int src_offset = i830->meta.Buffer[I830_DESTREG_CBUFADDR2];
   int destOffset = intelAgpOffsetFromVirtual( &i830->intel, pixels);
   int destFormat, depthFormat, destPitch;
   drm_clip_rect_t tmp;

   if (INTEL_DEBUG & DEBUG_PIXEL)
      fprintf(stderr, "%s\n", __FUNCTION__);


   if (	ctx->_ImageTransferState ||
	pack->SwapBytes ||
	pack->LsbFirst ||
	!pack->Invert) {
      fprintf(stderr, "%s: check_color failed\n", __FUNCTION__);
      return GL_FALSE;
   }

   switch (screen->fbFormat) {
   case DV_PF_565:
      textureFormat = MAPSURF_16BIT | MT_16BIT_RGB565;
      glTextureFormat = GL_RGB;
      break;
   case DV_PF_555:
      textureFormat = MAPSURF_16BIT | MT_16BIT_ARGB1555;
      glTextureFormat = GL_RGBA;
      break;
   case DV_PF_8888:
      textureFormat = MAPSURF_32BIT | MT_32BIT_ARGB8888;
      glTextureFormat = GL_RGBA;
      break;
   default:
      fprintf(stderr, "%s: textureFormat failed %x\n", __FUNCTION__,
	      screen->fbFormat);
      return GL_FALSE;
   }


   switch (type) {
   case GL_UNSIGNED_SHORT_5_6_5: 
      if (format != GL_RGB) return GL_FALSE;
      destFormat = COLR_BUF_RGB565; 
      depthFormat = DEPTH_FRMT_16_FIXED;
      destPitch = pitch * 2;
      break;
   case GL_UNSIGNED_INT_8_8_8_8_REV: 
      if (format != GL_BGRA) return GL_FALSE;
      destFormat = COLR_BUF_ARGB8888; 
      depthFormat = DEPTH_FRMT_24_FIXED_8_OTHER;
      destPitch = pitch * 4;
      break;
   default:
      fprintf(stderr, "%s: destFormat failed %s\n", __FUNCTION__,
	      _mesa_lookup_enum_by_nr(type));
      return GL_FALSE;
   }

   destFormat |= (0x02<<24);

/*    fprintf(stderr, "type: %s destFormat: %x\n", */
/* 	   _mesa_lookup_enum_by_nr(type), */
/* 	   destFormat); */

   intelFlush( ctx );

   SET_STATE( i830, meta );
   set_initial_state( i830 );
   set_no_depth_stencil_write( i830 );

   LOCK_HARDWARE( intel );
   {
      intelWaitForIdle( intel ); /* required by GL */

      if (!driClipRectToFramebuffer(ctx->ReadBuffer, &x, &y, &width, &height)) {
	 UNLOCK_HARDWARE( intel );
	 SET_STATE(i830, state);
	 fprintf(stderr, "%s: cliprect failed\n", __FUNCTION__);
	 return GL_TRUE;
      }

#if 0
      /* FIXME -- Just emit the correct state
       */
      if (i830SetParam(i830->driFd, I830_SETPARAM_CBUFFER_PITCH, 
		      destPitch) != 0) {
	 UNLOCK_HARDWARE( intel );
	 SET_STATE(i830, state);
	 fprintf(stderr, "%s: setparam failed\n", __FUNCTION__);
	 return GL_FALSE;
      }
#endif


      y = dPriv->h - y - height;
      x += dPriv->x;
      y += dPriv->y;


      /* Set the frontbuffer up as a large rectangular texture.
       */
      set_tex_rect_source( i830, 
			   src_offset, 
			   screen->width, 
			   screen->height, 
			   screen->front.pitch, 
			   textureFormat ); 
   
   
      enable_texture_blend_replace( i830 ); 


      /* Set the 3d engine to draw into the agp memory
       */

      set_draw_region( i830, destOffset ); 
      set_draw_format( i830, destFormat, depthFormat );  


      /* Draw a single quad, no cliprects:
       */
      i830->intel.numClipRects = 1;
      i830->intel.pClipRects = &tmp;
      i830->intel.pClipRects[0].x1 = 0;
      i830->intel.pClipRects[0].y1 = 0;
      i830->intel.pClipRects[0].x2 = width;
      i830->intel.pClipRects[0].y2 = height;

      draw_quad( i830, 
		 0, width, 0, height, 
		 0, 255, 0, 0, 
		 x, x+width, y, y+height );

      intelWindowMoved( intel );
   }
   UNLOCK_HARDWARE( intel );
   intelFinish( ctx ); /* required by GL */

   SET_STATE( i830, state );
   return GL_TRUE;
}


GLboolean
i830TryTextureDrawPixels( GLcontext *ctx,
			  GLint x, GLint y, GLsizei width, GLsizei height,
			  GLenum format, GLenum type,
			  const struct gl_pixelstore_attrib *unpack,
			  const GLvoid *pixels )
{
   intelContextPtr intel = INTEL_CONTEXT(ctx);
   i830ContextPtr i830 = I830_CONTEXT(ctx);
   GLint pitch = unpack->RowLength ? unpack->RowLength : width;
   __DRIdrawablePrivate *dPriv = intel->driDrawable;
   int textureFormat;
   GLenum glTextureFormat;
   int dst_offset = i830->meta.Buffer[I830_DESTREG_CBUFADDR2];
   int src_offset = intelAgpOffsetFromVirtual( intel, pixels );

   if (INTEL_DEBUG & DEBUG_PIXEL)
      fprintf(stderr, "%s\n", __FUNCTION__);

   /* Todo -- upload images that aren't in agp space, then texture
    * from them.  
    */

   if ( !intelIsAgpMemory( intel, pixels, pitch*height ) ) {
      fprintf(stderr, "%s: intelIsAgpMemory failed\n", __FUNCTION__);
      return GL_FALSE;
   }

   /* Todo -- don't want to clobber all the drawing state like we do
    * for readpixels -- most of this state can be handled just fine.
    */
   if (	ctx->_ImageTransferState ||
	unpack->SwapBytes ||
	unpack->LsbFirst ||
	ctx->Color.AlphaEnabled || 
	ctx->Depth.Test ||
	ctx->Fog.Enabled ||
	ctx->Scissor.Enabled ||
	ctx->Stencil.Enabled ||
	!ctx->Color.ColorMask[0] ||
	!ctx->Color.ColorMask[1] ||
	!ctx->Color.ColorMask[2] ||
	!ctx->Color.ColorMask[3] ||
	ctx->Color.ColorLogicOpEnabled ||
	ctx->Texture._EnabledUnits ||
	ctx->Depth.OcclusionTest) {
      fprintf(stderr, "%s: other tests failed\n", __FUNCTION__);
      return GL_FALSE;
   }

   /* Todo -- remove these restrictions:
    */
   if (ctx->Pixel.ZoomX != 1.0F ||
       ctx->Pixel.ZoomY != -1.0F)
      return GL_FALSE;



   switch (type) {
   case GL_UNSIGNED_SHORT_1_5_5_5_REV:
      if (format != GL_BGRA) return GL_FALSE;
      textureFormat = MAPSURF_16BIT | MT_16BIT_ARGB1555;
      glTextureFormat = GL_RGBA;
      break;
   case GL_UNSIGNED_SHORT_5_6_5: 
      if (format != GL_RGB) return GL_FALSE;
      textureFormat = MAPSURF_16BIT | MT_16BIT_RGB565;
      glTextureFormat = GL_RGB;
      break;
   case GL_UNSIGNED_SHORT_8_8_MESA: 
      if (format != GL_YCBCR_MESA) return GL_FALSE;
      textureFormat = (MAPSURF_422 | MT_422_YCRCB_SWAPY 
/*  		       | TM0S1_COLORSPACE_CONVERSION */
	 );
      glTextureFormat = GL_YCBCR_MESA;
      break;
   case GL_UNSIGNED_SHORT_8_8_REV_MESA: 
      if (format != GL_YCBCR_MESA) return GL_FALSE;
      textureFormat = (MAPSURF_422 | MT_422_YCRCB_NORMAL 
/* 		       | TM0S1_COLORSPACE_CONVERSION */
	 );
      glTextureFormat = GL_YCBCR_MESA;
      break;
   case GL_UNSIGNED_INT_8_8_8_8_REV: 
      if (format != GL_BGRA) return GL_FALSE;
      textureFormat = MAPSURF_32BIT | MT_32BIT_ARGB8888;
      glTextureFormat = GL_RGBA;
      break;
   default:
      fprintf(stderr, "%s: destFormat failed\n", __FUNCTION__);
      return GL_FALSE;
   }

   intelFlush( ctx );

   SET_STATE( i830, meta );

   LOCK_HARDWARE( intel );
   {
      intelWaitForIdle( intel ); /* required by GL */

      y -= height;			/* cope with pixel zoom */

      if (!driClipRectToFramebuffer(ctx->ReadBuffer, &x, &y, &width, &height)) {
	 UNLOCK_HARDWARE( intel );
	 SET_STATE(i830, state);
	 fprintf(stderr, "%s: cliprect failed\n", __FUNCTION__);
	 return GL_TRUE;
      }


      y = dPriv->h - y - height;

      set_initial_state( i830 );

      /* Set the pixel image up as a rectangular texture.
       */
      set_tex_rect_source( i830, 
			   src_offset, 
			   width, 
			   height, 
			   pitch, /* XXXX!!!! -- /2 sometimes */
			   textureFormat ); 
   
   
      enable_texture_blend_replace( i830 ); 

   
      /* Draw to the current draw buffer:
       */
      set_draw_offset( i830, dst_offset );

      /* Draw a quad, use regular cliprects
       */
/*       fprintf(stderr, "x: %d y: %d width %d height %d\n", x, y, width, height); */

      draw_quad( i830, 
		 x, x+width, y, y+height,
		 0, 255, 0, 0, 
		 0, width, 0, height );

      intelWindowMoved( intel );
   }
   UNLOCK_HARDWARE( intel );
   intelFinish( ctx ); /* required by GL */
   
   SET_STATE(i830, state);

   return GL_TRUE;
}

#endif

/**
 * 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
i830RotateWindow(intelContextPtr intel, __DRIdrawablePrivate *dPriv,
                 GLuint srcBuf)
{
   i830ContextPtr i830 = I830_CONTEXT( intel );
   intelScreenPrivate *screen = intel->intelScreen;
   const GLuint cpp = screen->cpp;
   drm_clip_rect_t fullRect;
   GLuint textureFormat, srcOffset, srcPitch;
   const drm_clip_rect_t *clipRects;
   int numClipRects;
   int i;

   int xOrig, yOrig;
   int origNumClipRects;
   drm_clip_rect_t *origRects;

   /*
    * set up hardware state
    */
   intelFlush( &intel->ctx );

   SET_STATE( i830, meta ); 
   set_initial_state( i830 ); 
   set_no_texture( i830 ); 
   set_vertex_format( i830 ); 
   set_no_depth_stencil_write( i830 );
   set_color_mask( i830, GL_FALSE );

   LOCK_HARDWARE(intel);

   /* save current drawing origin and cliprects (restored at end) */
   xOrig = intel->drawX;
   yOrig = intel->drawY;
   origNumClipRects = intel->numClipRects;
   origRects = intel->pClipRects;

   if (!intel->numClipRects)
      goto done;

   /*
    * 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;

   set_draw_region( i830, &screen->rotated );

   if (cpp == 4)
      textureFormat = MAPSURF_32BIT | MT_32BIT_ARGB8888;
   else
      textureFormat = MAPSURF_16BIT | MT_16BIT_RGB565;

   if (srcBuf == BUFFER_BIT_FRONT_LEFT) {
      srcPitch = screen->front.pitch;   /* in bytes */
      srcOffset = screen->front.offset; /* bytes */
      clipRects = dPriv->pClipRects;
      numClipRects = dPriv->numClipRects;
   }
   else {
      srcPitch = screen->back.pitch;   /* in bytes */
      srcOffset = screen->back.offset; /* bytes */
      clipRects = dPriv->pBackClipRects;
      numClipRects = dPriv->numBackClipRects;
   }

   /* set the whole screen up as a texture to avoid alignment issues */
   set_tex_rect_source(i830,
                       srcOffset,
                       screen->width,
                       screen->height,
                       srcPitch,
                       textureFormat);

   enable_texture_blend_replace(i830);

   /*
    * 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 */
      draw_poly(i830, 255, 255, 255, 255, 4, verts, tex);

   } /* cliprect loop */

   assert(!intel->prim.flush); 
   intelFlushBatchLocked( intel, GL_FALSE, GL_FALSE, GL_FALSE );

 done:
   /* restore original drawing origin and cliprects */
   intel->drawX = xOrig;
   intel->drawY = yOrig;
   intel->numClipRects = origNumClipRects;
   intel->pClipRects = origRects;

   UNLOCK_HARDWARE(intel);

   SET_STATE( i830, state );
}