diff options
Diffstat (limited to 'mesalib/src/mesa/main/macros.h')
| -rw-r--r-- | mesalib/src/mesa/main/macros.h | 37 |
1 files changed, 11 insertions, 26 deletions
diff --git a/mesalib/src/mesa/main/macros.h b/mesalib/src/mesa/main/macros.h index 2a849e36a..dbe5b867c 100644 --- a/mesalib/src/mesa/main/macros.h +++ b/mesalib/src/mesa/main/macros.h @@ -54,6 +54,10 @@ extern GLfloat _mesa_ubyte_to_float_color_tab[256]; #define FLOAT_TO_BYTE(X) ( (((GLint) (255.0F * (X))) - 1) / 2 ) +/** Convert GLbyte to GLfloat while preserving zero */ +#define BYTE_TO_FLOATZ(B) ((B) == 0 ? 0.0F : BYTE_TO_FLOAT(B)) + + /** Convert GLbyte in [-128,127] to GLfloat in [-1.0,1.0], texture/fb data */ #define BYTE_TO_FLOAT_TEX(B) ((B) == -128 ? -1.0F : (B) * (1.0F/127.0F)) @@ -73,6 +77,9 @@ extern GLfloat _mesa_ubyte_to_float_color_tab[256]; /** Convert GLfloat in [-1.0,1.0] to GLshort in [-32768,32767] */ #define FLOAT_TO_SHORT(X) ( (((GLint) (65535.0F * (X))) - 1) / 2 ) +/** Convert GLshort to GLfloat while preserving zero */ +#define SHORT_TO_FLOATZ(S) ((S) == 0 ? 0.0F : SHORT_TO_FLOAT(S)) + /** Convert GLshort in [-32768,32767] to GLfloat in [-1.0,1.0], texture/fb data */ #define SHORT_TO_FLOAT_TEX(S) ((S) == -32768 ? -1.0F : (S) * (1.0F/32767.0F)) @@ -588,19 +595,6 @@ do { \ */ #define LINTERP(T, OUT, IN) ((OUT) + (T) * ((IN) - (OUT))) -/* Can do better with integer math - */ -#define INTERP_UB( t, dstub, outub, inub ) \ -do { \ - GLfloat inf = UBYTE_TO_FLOAT( inub ); \ - GLfloat outf = UBYTE_TO_FLOAT( outub ); \ - GLfloat dstf = LINTERP( t, outf, inf ); \ - UNCLAMPED_FLOAT_TO_UBYTE( dstub, dstf ); \ -} while (0) - -#define INTERP_UI( t, dstui, outui, inui ) \ - dstui = (GLuint) (GLint) LINTERP( (t), (GLfloat) (outui), (GLfloat) (inui) ) - #define INTERP_F( t, dstf, outf, inf ) \ dstf = LINTERP( t, outf, inf ) @@ -619,16 +613,6 @@ do { \ dst[2] = LINTERP( (t), (out)[2], (in)[2] ); \ } while (0) -#define INTERP_SZ( t, vec, to, out, in, sz ) \ -do { \ - switch (sz) { \ - case 4: vec[to][3] = LINTERP( (t), (vec)[out][3], (vec)[in][3] ); \ - case 3: vec[to][2] = LINTERP( (t), (vec)[out][2], (vec)[in][2] ); \ - case 2: vec[to][1] = LINTERP( (t), (vec)[out][1], (vec)[in][1] ); \ - case 1: vec[to][0] = LINTERP( (t), (vec)[out][0], (vec)[in][0] ); \ - } \ -} while(0) - /*@}*/ @@ -656,9 +640,6 @@ do { \ #define DOT4( a, b ) ( (a)[0]*(b)[0] + (a)[1]*(b)[1] + \ (a)[2]*(b)[2] + (a)[3]*(b)[3] ) -/** Dot product of two 4-element vectors */ -#define DOT4V(v,a,b,c,d) (v[0]*(a) + v[1]*(b) + v[2]*(c) + v[3]*(d)) - /** Cross product of two 3-element vectors */ #define CROSS3(n, u, v) \ @@ -688,6 +669,10 @@ do { \ #define LEN_SQUARED_2FV( V ) ((V)[0]*(V)[0]+(V)[1]*(V)[1]) +/** Compute ceiling of integer quotient of A divided by B. */ +#define CEILING( A, B ) ( (A) % (B) == 0 ? (A)/(B) : (A)/(B)+1 ) + + /** casts to silence warnings with some compilers */ #define ENUM_TO_INT(E) ((GLint)(E)) #define ENUM_TO_FLOAT(E) ((GLfloat)(GLint)(E)) |