/*------------------------------------------------------------------------------
Copyright (c) 2012 The GRRLIB Team

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 without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
------------------------------------------------------------------------------*/

/*
 * @file GRRLIB_settings.h
 * Inline functions for configuring the GRRLIB settings.
 */

#ifndef GX_BM_SUBTRACT
    /**
     * Blending type.
     * libogc revision 4170 fixed a typographical error. GX_BM_SUBSTRACT was renamed GX_BM_SUBTRACT.
     * But for previous versions this define is needed.
     */
    #define GX_BM_SUBTRACT      GX_BM_SUBSTRACT
#endif

extern  GRRLIB_drawSettings  GRRLIB_Settings;

/**
 * Set a blending mode.
 * @param blendmode The blending mode to use (Default: GRRLIB_BLEND_ALPHA).
 */
INLINE
void  GRRLIB_SetBlend (const GRRLIB_blendMode blendmode) {
    GRRLIB_Settings.blend = blendmode;
    switch (GRRLIB_Settings.blend) {
        case GRRLIB_BLEND_ALPHA:
            GX_SetBlendMode(GX_BM_BLEND, GX_BL_SRCALPHA, GX_BL_INVSRCALPHA, GX_LO_CLEAR);
            break;
        case GRRLIB_BLEND_ADD:
            GX_SetBlendMode(GX_BM_BLEND, GX_BL_SRCALPHA, GX_BL_DSTALPHA, GX_LO_CLEAR);
            break;
        case GRRLIB_BLEND_SCREEN:
            GX_SetBlendMode(GX_BM_BLEND, GX_BL_SRCCLR, GX_BL_DSTALPHA, GX_LO_CLEAR);
            break;
        case GRRLIB_BLEND_MULTI:
            GX_SetBlendMode(GX_BM_SUBTRACT, GX_BL_SRCALPHA, GX_BL_INVSRCALPHA, GX_LO_CLEAR);
            break;
        case GRRLIB_BLEND_INV:
            GX_SetBlendMode(GX_BM_BLEND, GX_BL_INVSRCCLR, GX_BL_INVSRCCLR, GX_LO_CLEAR);
            break;
    }
}

/**
 * Get the current blending mode.
 * @return The current blending mode.
 */
INLINE
GRRLIB_blendMode  GRRLIB_GetBlend (void) {
    return GRRLIB_Settings.blend;
}

/**
 * Turn anti-aliasing on/off.
 * @param aa Set to true to enable anti-aliasing (Default: Enabled).
 */
INLINE
void  GRRLIB_SetAntiAliasing (const bool aa) {
    GRRLIB_Settings.antialias = aa;
}

/**
 * Get current anti-aliasing setting.
 * @return True if anti-aliasing is enabled.
 */
INLINE
bool  GRRLIB_GetAntiAliasing (void) {
    return GRRLIB_Settings.antialias;
}