- else {
- _swrast_read_rgba_span(ctx, ctx->DrawBuffer, n, span->x, span->y, dest);
- }
-
-#if CHAN_BITS == 8
- for (i = 0; i < n; i++) {
- rgba32[i] = (rgba32[i] & srcMask) | (dest32[i] & dstMask);
- }
-#else
- for (i = 0; i < n; i++) {
- if (!rMask) rgba[i][RCOMP] = dest[i][RCOMP];
- if (!gMask) rgba[i][GCOMP] = dest[i][GCOMP];
- if (!bMask) rgba[i][BCOMP] = dest[i][BCOMP];
- if (!aMask) rgba[i][ACOMP] = dest[i][ACOMP];
- }
-#endif
-}
-
-
-
-
-/*
- * Apply glColorMask to a span of RGBA pixels.
- */
-void
-_swrast_mask_rgba_array( GLcontext *ctx,
- GLuint n, GLint x, GLint y, GLchan rgba[][4] )
-{
- GLchan dest[MAX_WIDTH][4];
- GLuint i;
-
-#if CHAN_BITS == 8
-
- GLuint srcMask = *((GLuint*)ctx->Color.ColorMask);
- GLuint dstMask = ~srcMask;
- GLuint *rgba32 = (GLuint *) rgba;
- GLuint *dest32 = (GLuint *) dest;
-
- _swrast_read_rgba_span( ctx, ctx->DrawBuffer, n, x, y, dest );
- for (i = 0; i < n; i++) {
- rgba32[i] = (rgba32[i] & srcMask) | (dest32[i] & dstMask);
- }
-
-#else
-
- const GLint rMask = ctx->Color.ColorMask[RCOMP];
- const GLint gMask = ctx->Color.ColorMask[GCOMP];
- const GLint bMask = ctx->Color.ColorMask[BCOMP];
- const GLint aMask = ctx->Color.ColorMask[ACOMP];
-
- _swrast_read_rgba_span( ctx, ctx->DrawBuffer, n, x, y, dest );
- for (i = 0; i < n; i++) {
- if (!rMask) rgba[i][RCOMP] = dest[i][RCOMP];
- if (!gMask) rgba[i][GCOMP] = dest[i][GCOMP];
- if (!bMask) rgba[i][BCOMP] = dest[i][BCOMP];
- if (!aMask) rgba[i][ACOMP] = dest[i][ACOMP];
- }
-
-#endif
-}
-
-
-
-void
-_swrast_mask_index_span( GLcontext *ctx, const struct sw_span *span,
- GLuint index[] )
-{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
- const GLuint msrc = ctx->Color.IndexMask;
- const GLuint mdest = ~msrc;
- GLuint fbindexes[MAX_WIDTH];
- GLuint i;
-
- ASSERT(span->arrayMask & SPAN_INDEX);
- ASSERT(span->end < MAX_WIDTH);
-
- if (span->arrayMask & SPAN_XY) {
-
- (*swrast->Driver.ReadCI32Pixels)(ctx, span->end, span->array->x,
- span->array->y, fbindexes,
- span->array->mask);
-
- for (i = 0; i < span->end; i++) {
- index[i] = (index[i] & msrc) | (fbindexes[i] & mdest);
+ else if (span->array->ChanType == GL_UNSIGNED_SHORT) {
+ /* 2-byte components */
+ /* XXX try to use 64-bit arithmetic someday */
+ const GLushort rMask = ctx->Color.ColorMask[buf][RCOMP] ? 0xffff : 0x0;
+ const GLushort gMask = ctx->Color.ColorMask[buf][GCOMP] ? 0xffff : 0x0;
+ const GLushort bMask = ctx->Color.ColorMask[buf][BCOMP] ? 0xffff : 0x0;
+ const GLushort aMask = ctx->Color.ColorMask[buf][ACOMP] ? 0xffff : 0x0;
+ const GLushort (*dst)[4] = (const GLushort (*)[4]) rbPixels;
+ GLushort (*src)[4] = span->array->rgba16;
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ src[i][RCOMP] = (src[i][RCOMP] & rMask) | (dst[i][RCOMP] & ~rMask);
+ src[i][GCOMP] = (src[i][GCOMP] & gMask) | (dst[i][GCOMP] & ~gMask);
+ src[i][BCOMP] = (src[i][BCOMP] & bMask) | (dst[i][BCOMP] & ~bMask);
+ src[i][ACOMP] = (src[i][ACOMP] & aMask) | (dst[i][ACOMP] & ~aMask);