1.1 --- a/src/display.h	Mon Jul 28 03:41:25 2008 +0000
     1.2 +++ b/src/display.h	Wed Aug 27 10:59:10 2008 +0000
     1.3 @@ -74,6 +74,8 @@
     1.4      uint32_t size; /* Size of buffer in bytes, must be width*height*bpp */
     1.5      gboolean inverted;/* True if the buffer is upside down */
     1.6      uint32_t scale;
     1.7 +    GLuint tex_id;    /* texture bound to render buffer, if any (0 = none). 
     1.8 +                       * The render buffer does not own the texture */
     1.9      unsigned int buf_id; /* driver-specific buffer id, if applicable */
    1.10      gboolean flushed; /* True if the buffer has been flushed to vram */
    1.11  };
    1.12 @@ -138,9 +140,12 @@
    1.13      gchar *(*get_keysym_for_keycode)( uint16_t keycode );
    1.14  
    1.15      /**
    1.16 -     * Create a render target with the given width and height.
    1.17 +     * Create a render target with the given width and height. If a texture ID
    1.18 +     * is supplied (non-zero), the render buffer writes its output to that texture.
    1.19 +     * @param tex_id 0 or a valid GL texture name which must have been initialized to
    1.20 +     * the correct dimensions. 
    1.21       */
    1.22 -    render_buffer_t (*create_render_buffer)( uint32_t width, uint32_t height );
    1.23 +    render_buffer_t (*create_render_buffer)( uint32_t width, uint32_t height, GLuint tex_id );
    1.24  
    1.25      /**
    1.26       * Destroy the specified render buffer and release any associated
    1.27 @@ -154,6 +159,12 @@
    1.28      gboolean (*set_render_target)( render_buffer_t buffer );
    1.29  
    1.30      /**
    1.31 +     * Complete rendering and clear the current rendering target. If the 
    1.32 +     * buffer has a bound texture, it will be updated if necessary.
    1.33 +     */
    1.34 +    void (*finish_render)( render_buffer_t buffer );
    1.35 +    
    1.36 +    /**
    1.37       * Load the supplied frame buffer into the given render buffer.
    1.38       * Included here to allow driver-specific optimizations.
    1.39       */