From 15a500d3edb03668b43cc6898fafcda024d0f006 Mon Sep 17 00:00:00 2001 From: marha Date: Wed, 29 Feb 2012 13:34:55 +0100 Subject: xserver fontconfig mesa pixman git update 29 Feb 2012 --- mesalib/src/mesa/main/readpix.c | 22 +++++++++++++++------- 1 file changed, 15 insertions(+), 7 deletions(-) (limited to 'mesalib/src/mesa/main/readpix.c') diff --git a/mesalib/src/mesa/main/readpix.c b/mesalib/src/mesa/main/readpix.c index 0f429ab22..3384d8a38 100644 --- a/mesalib/src/mesa/main/readpix.c +++ b/mesalib/src/mesa/main/readpix.c @@ -225,6 +225,16 @@ fast_read_rgba_pixels_memcpy( struct gl_context *ctx, ctx->Pack.SwapBytes)) return GL_FALSE; + /* If the format is unsigned normalized then we can ignore clamping + * because the values are already in the range [0,1] so it won't + * have any effect anyway. + */ + if (_mesa_get_format_datatype(rb->Format) == GL_UNSIGNED_NORMALIZED) + transferOps &= ~IMAGE_CLAMP_BIT; + + if (transferOps) + return GL_FALSE; + dstStride = _mesa_image_row_stride(packing, width, format, type); dst = (GLubyte *) _mesa_image_address2d(packing, pixels, width, height, format, type, 0, 0); @@ -320,13 +330,11 @@ read_rgba_pixels( struct gl_context *ctx, transferOps |= IMAGE_CLAMP_BIT; } - if (!transferOps) { - /* Try the optimized paths first. */ - if (fast_read_rgba_pixels_memcpy(ctx, x, y, width, height, - format, type, pixels, packing, - transferOps)) { - return; - } + /* Try the optimized paths first. */ + if (fast_read_rgba_pixels_memcpy(ctx, x, y, width, height, + format, type, pixels, packing, + transferOps)) { + return; } slow_read_rgba_pixels(ctx, x, y, width, height, -- cgit v1.2.3