diff options
Diffstat (limited to 'src/mesa')
| -rw-r--r-- | src/mesa/swrast/s_texture.c | 65 |
1 files changed, 60 insertions, 5 deletions
diff --git a/src/mesa/swrast/s_texture.c b/src/mesa/swrast/s_texture.c index 3048f01d5d..1520fd079d 100644 --- a/src/mesa/swrast/s_texture.c +++ b/src/mesa/swrast/s_texture.c @@ -1,4 +1,4 @@ -/* $Id: s_texture.c,v 1.31 2001/05/30 17:47:43 brianp Exp $ */ +/* $Id: s_texture.c,v 1.32 2001/06/01 13:23:27 brianp Exp $ */ /* * Mesa 3-D graphics library @@ -323,9 +323,15 @@ sample_1d_linear(GLcontext *ctx, { const GLfloat a = FRAC(u); + +#if CHAN_BITS == 32 + const GLfloat w0 = (1.0F-a); + const GLfloat w1 = a ; +#else /* CHAN_BITS == 8 || CHAN_BITS == 16 */ /* compute sample weights in fixed point in [0,WEIGHT_SCALE] */ - const GLint w0 = IROUND_POS((1.0F-a) * WEIGHT_SCALE); - const GLint w1 = IROUND_POS( a * WEIGHT_SCALE); + const GLint w0 = IROUND_POS((1.0F - a) * WEIGHT_SCALE); + const GLint w1 = IROUND_POS( a * WEIGHT_SCALE); +#endif GLchan t0[4], t1[4]; /* texels */ @@ -348,10 +354,18 @@ sample_1d_linear(GLcontext *ctx, } } +#if CHAN_BITS == 32 + rgba[0] = w0 * t0[0] + w1 * t1[0]; + rgba[1] = w0 * t0[1] + w1 * t1[1]; + rgba[2] = w0 * t0[2] + w1 * t1[2]; + rgba[3] = w0 * t0[3] + w1 * t1[3]; +#else /* CHAN_BITS == 8 || CHAN_BITS == 16 */ rgba[0] = (GLchan) ((w0 * t0[0] + w1 * t1[0]) >> WEIGHT_SHIFT); rgba[1] = (GLchan) ((w0 * t0[1] + w1 * t1[1]) >> WEIGHT_SHIFT); rgba[2] = (GLchan) ((w0 * t0[2] + w1 * t1[2]) >> WEIGHT_SHIFT); rgba[3] = (GLchan) ((w0 * t0[3] + w1 * t1[3]) >> WEIGHT_SHIFT); +#endif + } } @@ -622,11 +636,20 @@ sample_2d_linear(GLcontext *ctx, { const GLfloat a = FRAC(u); const GLfloat b = FRAC(v); + +#if CHAN_BITS == 32 + const GLfloat w00 = (1.0F-a) * (1.0F-b); + const GLfloat w10 = a * (1.0F-b); + const GLfloat w01 = (1.0F-a) * b ; + const GLfloat w11 = a * b ; +#else /* CHAN_BITS == 8 || CHAN_BITS == 16 */ /* compute sample weights in fixed point in [0,WEIGHT_SCALE] */ const GLint w00 = IROUND_POS((1.0F-a) * (1.0F-b) * WEIGHT_SCALE); const GLint w10 = IROUND_POS( a * (1.0F-b) * WEIGHT_SCALE); const GLint w01 = IROUND_POS((1.0F-a) * b * WEIGHT_SCALE); const GLint w11 = IROUND_POS( a * b * WEIGHT_SCALE); +#endif + GLchan t00[4]; GLchan t10[4]; GLchan t01[4]; @@ -668,11 +691,18 @@ sample_2d_linear(GLcontext *ctx, palette_sample(ctx, tObj, t11[0], t11); } } - +#if CHAN_BITS == 32 + rgba[0] = w00 * t00[0] + w10 * t10[0] + w01 * t01[0] + w11 * t11[0]; + rgba[1] = w00 * t00[1] + w10 * t10[1] + w01 * t01[1] + w11 * t11[1]; + rgba[2] = w00 * t00[2] + w10 * t10[2] + w01 * t01[2] + w11 * t11[2]; + rgba[3] = w00 * t00[3] + w10 * t10[3] + w01 * t01[3] + w11 * t11[3]; +#else /* CHAN_BITS == 8 || CHAN_BITS == 16 */ rgba[0] = (GLchan) ((w00 * t00[0] + w10 * t10[0] + w01 * t01[0] + w11 * t11[0]) >> WEIGHT_SHIFT); rgba[1] = (GLchan) ((w00 * t00[1] + w10 * t10[1] + w01 * t01[1] + w11 * t11[1]) >> WEIGHT_SHIFT); rgba[2] = (GLchan) ((w00 * t00[2] + w10 * t10[2] + w01 * t01[2] + w11 * t11[2]) >> WEIGHT_SHIFT); rgba[3] = (GLchan) ((w00 * t00[3] + w10 * t10[3] + w01 * t01[3] + w11 * t11[3]) >> WEIGHT_SHIFT); +#endif + } } @@ -1051,6 +1081,18 @@ sample_3d_linear(GLcontext *ctx, const GLfloat a = FRAC(u); const GLfloat b = FRAC(v); const GLfloat c = FRAC(w); + +#if CHAN_BITS == 32 + /* compute sample weights in fixed point in [0,WEIGHT_SCALE] */ + GLfloat w000 = (1.0F-a) * (1.0F-b) * (1.0F-c); + GLfloat w100 = a * (1.0F-b) * (1.0F-c); + GLfloat w010 = (1.0F-a) * b * (1.0F-c); + GLfloat w110 = a * b * (1.0F-c); + GLfloat w001 = (1.0F-a) * (1.0F-b) * c ; + GLfloat w101 = a * (1.0F-b) * c ; + GLfloat w011 = (1.0F-a) * b * c ; + GLfloat w111 = a * b * c ; +#else /* CHAN_BITS == 8 || CHAN_BITS == 16 */ /* compute sample weights in fixed point in [0,WEIGHT_SCALE] */ GLint w000 = IROUND_POS((1.0F-a) * (1.0F-b) * (1.0F-c) * WEIGHT_SCALE); GLint w100 = IROUND_POS( a * (1.0F-b) * (1.0F-c) * WEIGHT_SCALE); @@ -1060,6 +1102,7 @@ sample_3d_linear(GLcontext *ctx, GLint w101 = IROUND_POS( a * (1.0F-b) * c * WEIGHT_SCALE); GLint w011 = IROUND_POS((1.0F-a) * b * c * WEIGHT_SCALE); GLint w111 = IROUND_POS( a * b * c * WEIGHT_SCALE); +#endif GLchan t000[4], t010[4], t001[4], t011[4]; GLchan t100[4], t110[4], t101[4], t111[4]; @@ -1138,9 +1181,19 @@ sample_3d_linear(GLcontext *ctx, } } +#if CHAN_BITS == 32 + rgba[0] = w000*t000[0] + w010*t010[0] + w001*t001[0] + w011*t011[0] + + w100*t100[0] + w110*t110[0] + w101*t101[0] + w111*t111[0]; + rgba[1] = w000*t000[1] + w010*t010[1] + w001*t001[1] + w011*t011[1] + + w100*t100[1] + w110*t110[1] + w101*t101[1] + w111*t111[1]; + rgba[2] = w000*t000[2] + w010*t010[2] + w001*t001[2] + w011*t011[2] + + w100*t100[2] + w110*t110[2] + w101*t101[2] + w111*t111[2]; + rgba[3] = w000*t000[3] + w010*t010[3] + w001*t001[3] + w011*t011[3] + + w100*t100[3] + w110*t110[3] + w101*t101[3] + w111*t111[3]; +#else /* CHAN_BITS == 8 || CHAN_BITS == 16 */ rgba[0] = (GLchan) ( (w000*t000[0] + w010*t010[0] + w001*t001[0] + w011*t011[0] + - w100*t100[0] + w110*t110[0] + w101*t101[0] + w111*t111[0] ) + w100*t100[0] + w110*t110[0] + w101*t101[0] + w111*t111[0] ) >> WEIGHT_SHIFT); rgba[1] = (GLchan) ( (w000*t000[1] + w010*t010[1] + w001*t001[1] + w011*t011[1] + @@ -1154,6 +1207,8 @@ sample_3d_linear(GLcontext *ctx, (w000*t000[3] + w010*t010[3] + w001*t001[3] + w011*t011[3] + w100*t100[3] + w110*t110[3] + w101*t101[3] + w111*t111[3] ) >> WEIGHT_SHIFT); +#endif + } } |