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[CHG] GRRLIB_GetPixelFromFB now use a real way to get it ;)

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[ADD] GRRLIB_SetPixelToFB
This commit is contained in:
N0NameN0 2010-04-29 18:20:15 +00:00
parent 46a2297aa6
commit 04cec42e7c
2 changed files with 25 additions and 37 deletions
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5
GRRLIB/GRRLIB/grrlib/GRRLIB__inline.h
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@ -104,9 +104,8 @@ INLINE u32 GRRLIB_GetPixelFromtexImg (const int x, const int y,
INLINE void GRRLIB_SetPixelTotexImg (const int x, const int y,
GRRLIB_texImg *tex, const u32 color);
INLINE void GRRLIB_GetPixelFromFB (int x, int y,
u8 *R1, u8 *G1, u8 *B1,
u8 *R2, u8 *G2, u8 *B2);
INLINE u32 GRRLIB_GetPixelFromFB (int x, int y);
INLINE void GRRLIB_SetPixelToFB (int x, int y, u32 pokeColor);
//------------------------------------------------------------------------------
// GRRLIB_settings.h - Rendering functions

57
GRRLIB/GRRLIB/grrlib/GRRLIB_pixel.h
View file

@ -67,44 +67,33 @@ void GRRLIB_SetPixelTotexImg (const int x, const int y,
/**
* Reads a pixel directly from the FrontBuffer.
* Since the FB is stored in YCbCr,
* @param x The x-coordinate within the FB.
* @param y The y-coordinate within the FB.
* @param R1 A pointer to a variable receiving the first Red value.
* @param G1 A pointer to a variable receiving the first Green value.
* @param B1 A pointer to a variable receiving the first Blue value.
* @param R2 A pointer to a variable receiving the second Red value.
* @param G2 A pointer to a variable receiving the second Green value.
* @param B2 A pointer to a variable receiving the second Blue value.
*/
INLINE
void GRRLIB_GetPixelFromFB (int x, int y,
u8 *R1, u8 *G1, u8 *B1,
u8 *R2, u8 *G2, u8 *B2) {
u32 Buffer;
u8 *Colors;
u32 GRRLIB_GetPixelFromFB (int x, int y) {
GXColor peekColor;
u32 MyColor;
// Position Correction
if (x > (rmode->fbWidth/2)) { x = (rmode->fbWidth/2); }
if (x < 0) { x = 0; }
if (y > rmode->efbHeight) { y = rmode->efbHeight; }
if (y < 0) { y = 0; }
GX_PeekARGB(x, y, &peekColor);
MyColor = RGBA(peekColor.r,peekColor.g,peekColor.b,peekColor.a);
// Preparing FB for reading
Buffer = ((u32 *)xfb[fb])[y*(rmode->fbWidth/2)+x];
Colors = (u8 *) &Buffer;
/** Color channel:
Colors[0] = Y1
Colors[1] = Cb
Colors[2] = Y2
Colors[3] = Cr */
*R1 = GRRLIB_ClampVar8( 1.164 * (Colors[0] - 16) + 1.596 * (Colors[3] - 128) );
*G1 = GRRLIB_ClampVar8( 1.164 * (Colors[0] - 16) - 0.813 * (Colors[3] - 128) - 0.392 * (Colors[1] - 128) );
*B1 = GRRLIB_ClampVar8( 1.164 * (Colors[0] - 16) + 2.017 * (Colors[1] - 128) );
*R2 = GRRLIB_ClampVar8( 1.164 * (Colors[2] - 16) + 1.596 * (Colors[3] - 128) );
*G2 = GRRLIB_ClampVar8( 1.164 * (Colors[2] - 16) - 0.813 * (Colors[3] - 128) - 0.392 * (Colors[1] - 128) );
*B2 = GRRLIB_ClampVar8( 1.164 * (Colors[2] - 16) + 2.017 * (Colors[1] - 128) );
return (MyColor);
}
/**
* Writes a pixel directly from the FrontBuffer.
* @param x The x-coordinate within the FB.
* @param y The y-coordinate within the FB.
*/
INLINE
void GRRLIB_SetPixelToFB (int x, int y, u32 pokeColor) {
GXColor MyColor;
MyColor.r=R(pokeColor);
MyColor.g=G(pokeColor);
MyColor.b=B(pokeColor);
MyColor.a=A(pokeColor);
GX_PokeARGB(x, y, MyColor);
}