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[ADD] Added basic blending support. Still needs some fixing~

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This commit is contained in:
Xane 2009-03-08 15:55:31 +00:00
parent ab964e34db
commit 71ac1a21b3
2 changed files with 84 additions and 6 deletions
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72
GRRLIB/GRRLIB/GRRLIB.c
View file

@ -29,12 +29,72 @@ static void RawTo4x4RGBA(const unsigned char *src, void *dst, const unsigned int
/**
* Turn AntiAliasing on/off.
* @param aa Set to true to enable AntiAliasing. (Default: Enabled)
* @param aa Set to true to enable AntiAliasing (Default: Enabled).
*/
void GRRLIB_SetAntiAliasing(bool aa) {
GRRLIB_Settings.antialias = aa;
}
/**
* Get current AntiAliasing setting.
* @return True if AntiAliasing is enabled.
*/
bool GRRLIB_GetAntiAliasing() {
return GRRLIB_Settings.antialias;
}
/**
* Set a blending mode.
* @param blendmode The blending mode to use (Default: GRRLIB_BLEND_ALPHA).
*/
inline void GRRLIB_SetBlend( unsigned char 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: // Some ugly lines around the drawn texture, needs to be fixed somehow.
GX_SetBlendMode(GX_BM_BLEND, GX_BL_SRCALPHA, GX_BL_ONE, GX_LO_CLEAR);
break;
case GRRLIB_BLEND_SUB: // Doesn't work really :/
GX_SetBlendMode(GX_BM_SUBSTRACT, GX_BL_SRCALPHA, GX_BL_INVSRCALPHA, GX_LO_CLEAR);
break;
case GRRLIB_BLEND_INV: // Wrong alpha information.. need to be inverted.
GX_SetBlendMode(GX_BM_LOGIC, GX_BL_SRCALPHA, GX_BL_INVSRCALPHA, GX_LO_EQUIV);
break;
/* Just for testing purpose, uncomment to use it.
Inverting seems to work with 13, it just uses the wrong alpha information. :/
case 4: GX_SetBlendMode(GX_BM_BLEND, GX_BL_SRCALPHA, GX_LO_CLEAR, GX_LO_CLEAR); break;
case 5: GX_SetBlendMode(GX_BM_SUBSTRACT, GX_BL_SRCALPHA, GX_LO_CLEAR, GX_LO_CLEAR); break;
case 6: GX_SetBlendMode(GX_BM_LOGIC, GX_BL_SRCALPHA, GX_LO_CLEAR, GX_LO_CLEAR); break;
case 7: GX_SetBlendMode(GX_BM_LOGIC, GX_BL_SRCALPHA, GX_LO_CLEAR, GX_LO_AND); break;
case 8: GX_SetBlendMode(GX_BM_LOGIC, GX_BL_SRCALPHA, GX_LO_CLEAR, GX_LO_REVAND); break;
case 9: GX_SetBlendMode(GX_BM_LOGIC, GX_BL_SRCALPHA, GX_LO_CLEAR, GX_LO_INVAND); break;
case 10: GX_SetBlendMode(GX_BM_LOGIC, GX_BL_SRCALPHA, GX_LO_CLEAR, GX_LO_XOR); break;
case 11: GX_SetBlendMode(GX_BM_LOGIC, GX_BL_SRCALPHA, GX_LO_CLEAR, GX_LO_OR); break;
case 12: GX_SetBlendMode(GX_BM_LOGIC, GX_BL_SRCALPHA, GX_LO_CLEAR, GX_LO_NOR); break;
case 13: GX_SetBlendMode(GX_BM_LOGIC, GX_BL_SRCALPHA, GX_LO_CLEAR, GX_LO_EQUIV); break;
case 14: GX_SetBlendMode(GX_BM_LOGIC, GX_BL_SRCALPHA, GX_LO_CLEAR, GX_LO_INV); break;
case 15: GX_SetBlendMode(GX_BM_LOGIC, GX_BL_SRCALPHA, GX_LO_CLEAR, GX_LO_REVOR); break;
case 16: GX_SetBlendMode(GX_BM_LOGIC, GX_BL_SRCALPHA, GX_LO_CLEAR, GX_LO_INVCOPY); break;
case 17: GX_SetBlendMode(GX_BM_LOGIC, GX_BL_SRCALPHA, GX_LO_CLEAR, GX_LO_INVOR); break;
case 18: GX_SetBlendMode(GX_BM_LOGIC, GX_BL_SRCALPHA, GX_LO_CLEAR, GX_LO_NAND); break;
case 19: GX_SetBlendMode(GX_BM_LOGIC, GX_BL_SRCALPHA, GX_LO_CLEAR, GX_LO_SET); break;
*/
}
}
/**
* Get the current blending mode.
* @return The current blending mode.
*/
unsigned char GRRLIB_GetBlend() {
return GRRLIB_Settings.blend;
}
/**
* Clear screen with a specific color.
* @param color The color to use to fill the screen.
@ -199,7 +259,7 @@ static void RawTo4x4RGBA(const unsigned char *src, void *dst, const unsigned int
* @param tex The texture to initialize.
* @param tilew Width of the tile.
* @param tileh Height of the tile.
* @param tilestart Offset for starting position. (Used in fonts)
* @param tilestart Offset for starting position (Used in fonts).
*/
void GRRLIB_InitTileSet(struct GRRLIB_texImg *tex, unsigned int tilew, unsigned int tileh, unsigned int tilestart) {
tex->tilew = tilew;
@ -465,8 +525,8 @@ inline void GRRLIB_DrawImg(f32 xpos, f32 ypos, GRRLIB_texImg tex, float degrees,
GX_InitTexObjLOD(&texObj, GX_NEAR, GX_NEAR, 0.0f, 0.0f, 0.0f, 0, 0, GX_ANISO_1);
}
GX_LoadTexObj(&texObj, GX_TEXMAP0);
GX_SetTevOp(GX_TEVSTAGE0, GX_MODULATE);
GX_SetTevOp(GX_TEVSTAGE0, GX_MODULATE);
GX_SetVtxDesc(GX_VA_TEX0, GX_DIRECT);
width = tex.w * 0.5;
@ -667,7 +727,7 @@ void GRRLIB_ClipReset() {
}
/**
* Set a texture's X and Y handles. (e.g. for rotation)
* Set a texture's X and Y handles (e.g. for rotation).
* @param tex The texture to set the handle on.
* @param x The handle's x-coordinate.
* @param y The handle's y-coordinate.
@ -685,7 +745,7 @@ void GRRLIB_SetHandle(GRRLIB_texImg * tex, int x, int y) {
}
/**
* Center a texture's handles. (e.g. for rotation)
* Center a texture's handles (e.g. for rotation).
* @param tex The texture to center.
*/
void GRRLIB_SetMidHandle(GRRLIB_texImg * tex) {

18
GRRLIB/GRRLIB/GRRLIB.h
View file

@ -20,11 +20,24 @@
#endif /* __cplusplus */
/**
* GRRLIB Blending Modes
*/
#define GRRLIB_BLEND_ALPHA 0 /**< Alpha Blending */
#define GRRLIB_BLEND_ADD 1 /**< Additive Blending */
#define GRRLIB_BLEND_SUB 2 /**< Subtractive Blending */
#define GRRLIB_BLEND_INV 3 /**< Invertive Blending */
#define GRRLIB_BLEND_NONE GRRLIB_BLEND_ALPHA
#define GRRLIB_BLEND_LIGHT GRRLIB_BLEND_ADD
#define GRRLIB_BLEND_SHADE GRRLIB_BLEND_SUB
/**
* Structure to hold the current drawing settings.
*/
typedef struct GRRLIB_drawSettings {
bool antialias; /**< Flag for AntiAlias On/Off. */
unsigned char blend; /**< Blending Mode */
} GRRLIB_drawSettings;
/**
@ -74,6 +87,11 @@ typedef struct GRRLIB_bytemapFont {
extern Mtx GXmodelView2D;
void GRRLIB_SetAntiAliasing(bool aa);
bool GRRLIB_GetAntiAliasing();
inline void GRRLIB_SetBlend( unsigned char blendmode );
unsigned char GRRLIB_GetBlend();
inline void GRRLIB_FillScreen(u32 color);