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[ADD] Added a basic struct for image settings.

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[ADD] Added GRRLIB_SetAntiAlias to turn AntiAliasing on/off. It's enabled by default.
This commit is contained in:
Xane 2009-03-07 23:25:23 +00:00
parent 6c33b53d49
commit f979db4aa4
2 changed files with 109 additions and 77 deletions
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106
GRRLIB/GRRLIB/GRRLIB.c
View file

@ -24,6 +24,16 @@ GXRModeObj *rmode;
void *gp_fifo = NULL;
static void RawTo4x4RGBA(const unsigned char *src, void *dst, const unsigned int width, const unsigned int height);
static GRRLIB_drawSettings GRRLIB_Settings;
/**
* Turn AntiAliasing on/off
* @param aa Set to true to enable AntiAliasing. (Default: Enabled)
*/
void GRRLIB_SetAntiAliasing( bool aa ) {
GRRLIB_Settings.antialias = aa;
}
/**
* Clear screen with a specific color.
@ -142,44 +152,6 @@ void GRRLIB_NGoneFilled(Vector v[], u32 color, long n) {
GRRLIB_GXEngine(v, color, n, GX_TRIANGLEFAN);
}
/**
* Initialize a tile set.
* @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)
*/
void GRRLIB_InitTileSet(struct GRRLIB_texImg *tex, unsigned int tilew, unsigned int tileh, unsigned int tilestart) {
tex->tilew = tilew;
tex->tileh = tileh;
if (tilew) // Avoid division by zero
tex->nbtilew = tex->w / tilew;
if (tileh) // Avoid division by zero
tex->nbtileh = tex->h / tileh;
tex->tilestart = tilestart;
}
/**
* Load a texture from a buffer.
* @param my_png the PNG buffer to load.
* @return A GRRLIB_texImg structure filled with image informations.
*/
GRRLIB_texImg GRRLIB_LoadTexturePNG(const unsigned char my_png[]) {
PNGUPROP imgProp;
IMGCTX ctx;
GRRLIB_texImg my_texture;
ctx = PNGU_SelectImageFromBuffer(my_png);
PNGU_GetImageProperties(ctx, &imgProp);
my_texture.data = memalign(32, imgProp.imgWidth * imgProp.imgHeight * 4);
PNGU_DecodeTo4x4RGBA8(ctx, imgProp.imgWidth, imgProp.imgHeight, my_texture.data, 255);
PNGU_ReleaseImageContext(ctx);
my_texture.w = imgProp.imgWidth;
my_texture.h = imgProp.imgHeight;
GRRLIB_SetHandle( &my_texture, 0, 0 );
GRRLIB_FlushTex(my_texture);
return my_texture;
}
/**
* Convert a raw BMP (RGB, no alpha) to 4x4RGBA.
@ -222,6 +194,46 @@ static void RawTo4x4RGBA(const unsigned char *src, void *dst, const unsigned int
} /* block */
}
/**
* Initialize a tile set.
* @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)
*/
void GRRLIB_InitTileSet(struct GRRLIB_texImg *tex, unsigned int tilew, unsigned int tileh, unsigned int tilestart) {
tex->tilew = tilew;
tex->tileh = tileh;
if (tilew) // Avoid division by zero
tex->nbtilew = tex->w / tilew;
if (tileh) // Avoid division by zero
tex->nbtileh = tex->h / tileh;
tex->tilestart = tilestart;
}
/**
* Load a texture from a buffer.
* @param my_png the PNG buffer to load.
* @return A GRRLIB_texImg structure filled with image informations.
*/
GRRLIB_texImg GRRLIB_LoadTexturePNG(const unsigned char my_png[]) {
PNGUPROP imgProp;
IMGCTX ctx;
GRRLIB_texImg my_texture;
ctx = PNGU_SelectImageFromBuffer(my_png);
PNGU_GetImageProperties(ctx, &imgProp);
my_texture.data = memalign(32, imgProp.imgWidth * imgProp.imgHeight * 4);
PNGU_DecodeTo4x4RGBA8(ctx, imgProp.imgWidth, imgProp.imgHeight, my_texture.data, 255);
PNGU_ReleaseImageContext(ctx);
my_texture.w = imgProp.imgWidth;
my_texture.h = imgProp.imgHeight;
GRRLIB_SetHandle( &my_texture, 0, 0 );
GRRLIB_FlushTex(my_texture);
return my_texture;
}
/**
* Load a texture from a buffer.
* Take care to have the JPG finnish with 0xFF 0xD9!!
@ -450,7 +462,7 @@ inline void GRRLIB_DrawImg(f32 xpos, f32 ypos, GRRLIB_texImg tex, float degrees,
Mtx m, m1, m2, mv;
GX_InitTexObj(&texObj, tex.data, tex.w, tex.h, GX_TF_RGBA8, GX_CLAMP, GX_CLAMP, GX_FALSE);
GX_InitTexObjLOD(&texObj, GX_NEAR, GX_NEAR, 0.0f, 0.0f, 0.0f, 0, 0, GX_ANISO_1);
if (GRRLIB_Settings.antialias == false) { 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);
@ -466,8 +478,8 @@ inline void GRRLIB_DrawImg(f32 xpos, f32 ypos, GRRLIB_texImg tex, float degrees,
guMtxTransApply(m, m, xpos+width+tex.handlex-tex.offsetx+(scaleX*( -tex.handley*sin(-DegToRad(degrees)) - tex.handlex*cos(-DegToRad(degrees)) )), ypos+height+tex.handley-tex.offsety+(scaleX*( -tex.handley*cos(-DegToRad(degrees)) + tex.handlex*sin(-DegToRad(degrees)) )), 0);
guMtxConcat(GXmodelView2D, m, mv);
GX_LoadPosMtxImm(mv, GX_PNMTX0);
GX_LoadPosMtxImm(mv, GX_PNMTX0);
GX_Begin(GX_QUADS, GX_VTXFMT0, 4);
GX_Position3f32(-width, -height, 0);
GX_Color1u32(color);
@ -515,7 +527,7 @@ inline void GRRLIB_DrawTile(f32 xpos, f32 ypos, GRRLIB_texImg tex, float degrees
f32 t2 = (((int)(frame/tex.nbtilew)+1)/(f32)tex.nbtileh)-(FRAME_CORR/tex.h);
GX_InitTexObj(&texObj, tex.data, tex.tilew*tex.nbtilew, tex.tileh*tex.nbtileh, GX_TF_RGBA8, GX_CLAMP, GX_CLAMP, GX_FALSE);
GX_InitTexObjLOD(&texObj, GX_NEAR, GX_NEAR, 0.0f, 0.0f, 0.0f, 0, 0, GX_ANISO_1);
if (GRRLIB_Settings.antialias == false) { 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);
@ -525,11 +537,13 @@ inline void GRRLIB_DrawTile(f32 xpos, f32 ypos, GRRLIB_texImg tex, float degrees
height = tex.tileh * 0.5f;
guMtxIdentity(m1);
guMtxScaleApply(m1, m1, scaleX, scaleY, 1.0f);
Vector axis = (Vector) {0, 0, 1 };
guMtxRotAxisDeg(m2, &axis, degrees);
guMtxConcat(m2, m1, m);
guMtxTransApply(m, m, xpos+width, ypos+height, 0);
guMtxTransApply(m, m, xpos+width+tex.handlex-tex.offsetx+(scaleX*( -tex.handley*sin(-DegToRad(degrees)) - tex.handlex*cos(-DegToRad(degrees)) )), ypos+height+tex.handley-tex.offsety+(scaleX*( -tex.handley*cos(-DegToRad(degrees)) + tex.handlex*sin(-DegToRad(degrees)) )), 0);
guMtxConcat(GXmodelView2D, m, mv);
GX_LoadPosMtxImm(mv, GX_PNMTX0);
GX_Begin(GX_QUADS, GX_VTXFMT0, 4);
GX_Position3f32(-width, -height, 0);
@ -657,8 +671,13 @@ void GRRLIB_ClipReset() {
* @param y The handle's y-coordinate
*/
void GRRLIB_SetHandle( GRRLIB_texImg * tex, int x, int y ) {
if (tex->tilew) {
tex->handlex = -(tex->tilew/2) + x;
tex->handley = -(tex->tileh/2) + y;
} else {
tex->handlex = -(tex->w/2) + x;
tex->handley = -(tex->h/2) + y;
}
tex->offsetx = x;
tex->offsety = y;
}
@ -1019,6 +1038,9 @@ void GRRLIB_Init() {
GX_SetCullMode(GX_CULL_NONE);
VIDEO_SetBlack(false);
// Default settings
GRRLIB_Settings.antialias = true;
}
/**

10
GRRLIB/GRRLIB/GRRLIB.h
View file

@ -19,6 +19,14 @@
extern "C" {
#endif /* __cplusplus */
/**
* Structure to hold the current drawing settings.
*/
typedef struct GRRLIB_drawSettings {
bool antialias; /**< Flag for AntiAlias On/Off */
} GRRLIB_drawSettings;
/**
* Structure to hold the texture informations.
*/
@ -65,6 +73,8 @@ typedef struct GRRLIB_bytemapFont{
extern Mtx GXmodelView2D;
void GRRLIB_SetAntiAliasing( bool aa );
inline void GRRLIB_FillScreen(u32 color);
inline void GRRLIB_Plot(f32 x, f32 y, u32 color);