1.1 --- a/src/pvr2/render.c	Mon May 15 08:28:52 2006 +0000
     1.2 +++ b/src/pvr2/render.c	Sun Jun 18 11:57:05 2006 +0000
     1.3 @@ -1,5 +1,5 @@
     1.4  /**
     1.5 - * $Id: render.c,v 1.8 2006-05-15 08:28:52 nkeynes Exp $
     1.6 + * $Id: render.c,v 1.9 2006-06-18 11:57:05 nkeynes Exp $
     1.7   *
     1.8   * PVR2 Renderer support. This is where the real work happens.
     1.9   *
    1.10 @@ -60,7 +60,8 @@
    1.11   * to fetch the bits back to vram.
    1.12   */
    1.13  typedef struct pvr2_render_buffer {
    1.14 -    uint32_t render_addr; /* The actual address rendered to in pvr ram */
    1.15 +    sh4addr_t render_addr; /* The actual address rendered to in pvr ram */
    1.16 +    uint32_t size; /* Length of rendering region in bytes */
    1.17      int width, height;
    1.18      int colour_format;
    1.19  } *pvr2_render_buffer_t;
    1.20 @@ -176,6 +177,31 @@
    1.21  }
    1.22  
    1.23  /**
    1.24 + * Invalidate any caching on the supplied address. Specifically, if it falls
    1.25 + * within either the front buffer or back buffer, flush the buffer back to
    1.26 + * PVR2 ram (note that front buffer flush may be corrupt under some
    1.27 + * circumstances).
    1.28 + */
    1.29 +gboolean pvr2_render_invalidate( sh4addr_t address )
    1.30 +{
    1.31 +    address = address & 0x1FFFFFFF;
    1.32 +    if( front_buffer.render_addr != -1 &&
    1.33 +	front_buffer.render_addr <= address &&
    1.34 +	(front_buffer.render_addr + front_buffer.size) > address ) {
    1.35 +	pvr2_render_copy_to_sh4( &front_buffer, FALSE );
    1.36 +	front_buffer.render_addr = -1;
    1.37 +	return TRUE;
    1.38 +    } else if( back_buffer.render_addr != -1 &&
    1.39 +	       back_buffer.render_addr <= address &&
    1.40 +	       (back_buffer.render_addr + back_buffer.size) > address ) {
    1.41 +	pvr2_render_copy_to_sh4( &back_buffer, TRUE );
    1.42 +	back_buffer.render_addr = -1;
    1.43 +	return TRUE;
    1.44 +    }
    1.45 +    return FALSE;
    1.46 +}
    1.47 +
    1.48 +/**
    1.49   * Display a rendered frame if one is available.
    1.50   * @param address An address in PVR ram (0500000 range).
    1.51   * @return TRUE if a frame was available to be displayed, otherwise false.
    1.52 @@ -235,6 +261,7 @@
    1.53      back_buffer.width = width;
    1.54      back_buffer.height = height;
    1.55      back_buffer.colour_format = colour_format;
    1.56 +    back_buffer.size = width * height * colour_format_bytes[colour_format];
    1.57  
    1.58      /* Setup the display model */
    1.59      glDrawBuffer(GL_BACK);
    1.60 @@ -243,7 +270,7 @@
    1.61      glViewport( 0, 0, width, height );
    1.62      glMatrixMode(GL_PROJECTION);
    1.63      glLoadIdentity();
    1.64 -    glOrtho( 0, width, height, 0, bgplanez, -1 );
    1.65 +    glOrtho( 0, width, height, 0, bgplanez, -10 );
    1.66      glMatrixMode(GL_MODELVIEW);
    1.67      glLoadIdentity();
    1.68      glCullFace( GL_BACK );