diff options
Diffstat (limited to 'src/mesa/main/image.c')
| -rw-r--r-- | src/mesa/main/image.c | 154 |
1 files changed, 116 insertions, 38 deletions
diff --git a/src/mesa/main/image.c b/src/mesa/main/image.c index 1d779ea82b..fc77bf8818 100644 --- a/src/mesa/main/image.c +++ b/src/mesa/main/image.c @@ -1,4 +1,4 @@ -/* $Id: image.c,v 1.64 2002/03/13 04:34:32 brianp Exp $ */ +/* $Id: image.c,v 1.65 2002/03/19 16:47:04 brianp Exp $ */ /* * Mesa 3-D graphics library @@ -1787,6 +1787,18 @@ _mesa_pack_rgba_span( GLcontext *ctx, dest += 3; } } + else if (transferOps == 0 && dstFormat == GL_RGBA && dstType == GL_UNSIGNED_BYTE) { + /* common simple case */ + GLuint i; + GLubyte *dest = (GLubyte *) dstAddr; + for (i = 0; i < n; i++) { + dest[0] = CHAN_TO_UBYTE(srcRgba[i][RCOMP]); + dest[1] = CHAN_TO_UBYTE(srcRgba[i][GCOMP]); + dest[2] = CHAN_TO_UBYTE(srcRgba[i][BCOMP]); + dest[3] = CHAN_TO_UBYTE(srcRgba[i][ACOMP]); + dest += 4; + } + } else { /* general solution */ GLuint i; @@ -2561,52 +2573,118 @@ _mesa_unpack_chan_color_span( GLcontext *ctx, srcType == GL_UNSIGNED_INT_2_10_10_10_REV); /* Try simple cases first */ - if (transferOps == 0 && srcType == CHAN_TYPE) { - if (dstFormat == GL_RGBA) { - if (srcFormat == GL_RGBA) { - MEMCPY( dest, source, n * 4 * sizeof(GLchan) ); - return; + if (transferOps == 0 ){ + if (srcType == CHAN_TYPE) { + if (dstFormat == GL_RGBA) { + if (srcFormat == GL_RGBA) { + MEMCPY( dest, source, n * 4 * sizeof(GLchan) ); + return; + } + else if (srcFormat == GL_RGB) { + GLuint i; + const GLchan *src = (const GLchan *) source; + GLchan *dst = dest; + for (i = 0; i < n; i++) { + dst[0] = src[0]; + dst[1] = src[1]; + dst[2] = src[2]; + dst[3] = CHAN_MAX; + src += 3; + dst += 4; + } + return; + } } - else if (srcFormat == GL_RGB) { - GLuint i; - const GLchan *src = (const GLchan *) source; - GLchan *dst = dest; - for (i = 0; i < n; i++) { - dst[0] = src[0]; - dst[1] = src[1]; - dst[2] = src[2]; - dst[3] = CHAN_MAX; - src += 3; - dst += 4; + else if (dstFormat == GL_RGB) { + if (srcFormat == GL_RGB) { + MEMCPY( dest, source, n * 3 * sizeof(GLchan) ); + return; + } + else if (srcFormat == GL_RGBA) { + GLuint i; + const GLchan *src = (const GLchan *) source; + GLchan *dst = dest; + for (i = 0; i < n; i++) { + dst[0] = src[0]; + dst[1] = src[1]; + dst[2] = src[2]; + src += 4; + dst += 3; + } + return; } + } + else if (dstFormat == srcFormat) { + GLint comps = _mesa_components_in_format(srcFormat); + assert(comps > 0); + MEMCPY( dest, source, n * comps * sizeof(GLchan) ); return; } } - else if (dstFormat == GL_RGB) { - if (srcFormat == GL_RGB) { - MEMCPY( dest, source, n * 3 * sizeof(GLchan) ); - return; + /* + * Common situation, loading 8bit RGBA/RGB source images + * into 16/32 bit destination. (OSMesa16/32) + */ + else if (srcType == GL_UNSIGNED_BYTE) { + if (dstFormat == GL_RGBA) { + if (srcFormat == GL_RGB) { + GLuint i; + const GLubyte *src = (const GLubyte *) source; + GLchan *dst = dest; + for (i = 0; i < n; i++) { + dst[0] = UBYTE_TO_CHAN(src[0]); + dst[1] = UBYTE_TO_CHAN(src[1]); + dst[2] = UBYTE_TO_CHAN(src[2]); + dst[3] = CHAN_MAX; + src += 3; + dst += 4; + } + return; + } + else if (srcFormat == GL_RGBA) { + GLuint i; + const GLubyte *src = (const GLubyte *) source; + GLchan *dst = dest; + for (i = 0; i < n; i++) { + dst[0] = UBYTE_TO_CHAN(src[0]); + dst[1] = UBYTE_TO_CHAN(src[1]); + dst[2] = UBYTE_TO_CHAN(src[2]); + dst[3] = UBYTE_TO_CHAN(src[3]); + src += 4; + dst += 4; + } + return; + } } - else if (srcFormat == GL_RGBA) { - GLuint i; - const GLchan *src = (const GLchan *) source; - GLchan *dst = dest; - for (i = 0; i < n; i++) { - dst[0] = src[0]; - dst[1] = src[1]; - dst[2] = src[2]; - src += 4; - dst += 3; + else if (dstFormat == GL_RGB) { + if (srcFormat == GL_RGB) { + GLuint i; + const GLubyte *src = (const GLubyte *) source; + GLchan *dst = dest; + for (i = 0; i < n; i++) { + dst[0] = UBYTE_TO_CHAN(src[0]); + dst[1] = UBYTE_TO_CHAN(src[1]); + dst[2] = UBYTE_TO_CHAN(src[2]); + src += 3; + dst += 3; + } + return; + } + else if (srcFormat == GL_RGBA) { + GLuint i; + const GLubyte *src = (const GLubyte *) source; + GLchan *dst = dest; + for (i = 0; i < n; i++) { + dst[0] = UBYTE_TO_CHAN(src[0]); + dst[1] = UBYTE_TO_CHAN(src[1]); + dst[2] = UBYTE_TO_CHAN(src[2]); + src += 4; + dst += 3; + } + return; } - return; } } - else if (dstFormat == srcFormat) { - GLint comps = _mesa_components_in_format(srcFormat); - assert(comps > 0); - MEMCPY( dest, source, n * comps * sizeof(GLchan) ); - return; - } } |