diff options
| author | Brian Paul <brian.paul@tungstengraphics.com> | 2001-03-08 15:23:46 +0000 |
|---|---|---|
| committer | Brian Paul <brian.paul@tungstengraphics.com> | 2001-03-08 15:23:46 +0000 |
| commit | 01915e90e6912f06d43d443a09157f7bbc96ddc5 (patch) | |
| tree | fc86ff76a45027c01d45902bed894d12f161088c /src/mesa/swrast/s_blend.c | |
| parent | eac57f009ea347cfce0d70452c1bdeb0e6c9eeae (diff) | |
More g++ warning fixes. Fixes for CHAN_BITS==16, it seems to work.
Diffstat (limited to 'src/mesa/swrast/s_blend.c')
| -rw-r--r-- | src/mesa/swrast/s_blend.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/src/mesa/swrast/s_blend.c b/src/mesa/swrast/s_blend.c index bf23a870ab..d22616e36b 100644 --- a/src/mesa/swrast/s_blend.c +++ b/src/mesa/swrast/s_blend.c @@ -1,4 +1,4 @@ -/* $Id: s_blend.c,v 1.4 2001/03/03 21:11:33 brianp Exp $ */ +/* $Id: s_blend.c,v 1.5 2001/03/08 15:23:46 brianp Exp $ */ /* * Mesa 3-D graphics library @@ -98,12 +98,20 @@ blend_transparency( GLcontext *ctx, GLuint n, const GLubyte mask[], const GLint b = DIV255(rgba[i][BCOMP] * t + dest[i][BCOMP] * s); const GLint a = DIV255(rgba[i][ACOMP] * t + dest[i][ACOMP] * s); #undef DIV255 -#else - const GLint s = CHAN_MAX - t; - const GLint r = (rgba[i][RCOMP] * t + dest[i][RCOMP] * s) / CHAN_MAX; - const GLint g = (rgba[i][GCOMP] * t + dest[i][GCOMP] * s) / CHAN_MAX; - const GLint b = (rgba[i][BCOMP] * t + dest[i][BCOMP] * s) / CHAN_MAX; - const GLint a = (rgba[i][ACOMP] * t + dest[i][ACOMP] * s) / CHAN_MAX; +#elif CHAN_BITS == 16 + const GLfloat tt = (GLfloat) t / CHAN_MAXF; + const GLfloat s = 1.0 - tt; + const GLint r = (GLint) (rgba[i][RCOMP] * tt + dest[i][RCOMP] * s); + const GLint g = (GLint) (rgba[i][GCOMP] * tt + dest[i][GCOMP] * s); + const GLint b = (GLint) (rgba[i][BCOMP] * tt + dest[i][BCOMP] * s); + const GLint a = (GLint) (rgba[i][ACOMP] * tt + dest[i][ACOMP] * s); +#else /* CHAN_BITS == 32 */ + const GLfloat tt = (GLfloat) t / CHAN_MAXF; + const GLfloat s = 1.0 - tt; + const GLfloat r = rgba[i][RCOMP] * tt + dest[i][RCOMP] * s; + const GLfloat g = rgba[i][GCOMP] * tt + dest[i][GCOMP] * s; + const GLfloat b = rgba[i][BCOMP] * tt + dest[i][BCOMP] * s; + const GLfloat a = rgba[i][ACOMP] * tt + dest[i][ACOMP] * s; #endif #endif ASSERT(r <= CHAN_MAX); @@ -625,7 +633,7 @@ _mesa_blend_span( GLcontext *ctx, GLuint n, GLint x, GLint y, _mesa_read_rgba_span( ctx, ctx->DrawBuffer, n, x, y, dest ); SWRAST_CONTEXT(ctx)->BlendFunc( ctx, n, mask, rgba, - (const GLchan (*)[4])dest ); + (const GLchan (*)[4]) dest ); } |