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-rw-r--r--src/mesa/main/colortab.c64
1 files changed, 61 insertions, 3 deletions
diff --git a/src/mesa/main/colortab.c b/src/mesa/main/colortab.c
index bab5e959d5..143d9e99d4 100644
--- a/src/mesa/main/colortab.c
+++ b/src/mesa/main/colortab.c
@@ -1,4 +1,4 @@
-/* $Id: colortab.c,v 1.17 2000/05/10 14:39:53 brianp Exp $ */
+/* $Id: colortab.c,v 1.18 2000/05/24 14:03:04 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -36,11 +36,69 @@
#include "mem.h"
#include "mmath.h"
#include "span.h"
-#include "teximage.h"
#endif
+/*
+ * Given an internalFormat token passed to glColorTable,
+ * return the corresponding base format.
+ * Return -1 if invalid token.
+ */
+static GLint
+base_colortab_format( GLenum format )
+{
+ switch (format) {
+ case GL_ALPHA:
+ case GL_ALPHA4:
+ case GL_ALPHA8:
+ case GL_ALPHA12:
+ case GL_ALPHA16:
+ return GL_ALPHA;
+ case GL_LUMINANCE:
+ case GL_LUMINANCE4:
+ case GL_LUMINANCE8:
+ case GL_LUMINANCE12:
+ case GL_LUMINANCE16:
+ return GL_LUMINANCE;
+ case GL_LUMINANCE_ALPHA:
+ case GL_LUMINANCE4_ALPHA4:
+ case GL_LUMINANCE6_ALPHA2:
+ case GL_LUMINANCE8_ALPHA8:
+ case GL_LUMINANCE12_ALPHA4:
+ case GL_LUMINANCE12_ALPHA12:
+ case GL_LUMINANCE16_ALPHA16:
+ return GL_LUMINANCE_ALPHA;
+ case GL_INTENSITY:
+ case GL_INTENSITY4:
+ case GL_INTENSITY8:
+ case GL_INTENSITY12:
+ case GL_INTENSITY16:
+ return GL_INTENSITY;
+ case GL_RGB:
+ case GL_R3_G3_B2:
+ case GL_RGB4:
+ case GL_RGB5:
+ case GL_RGB8:
+ case GL_RGB10:
+ case GL_RGB12:
+ case GL_RGB16:
+ return GL_RGB;
+ case GL_RGBA:
+ case GL_RGBA2:
+ case GL_RGBA4:
+ case GL_RGB5_A1:
+ case GL_RGBA8:
+ case GL_RGB10_A2:
+ case GL_RGBA12:
+ case GL_RGBA16:
+ return GL_RGBA;
+ default:
+ return -1; /* error */
+ }
+}
+
+
void
_mesa_init_colortable( struct gl_color_table *p )
{
@@ -248,7 +306,7 @@ _mesa_ColorTable( GLenum target, GLenum internalFormat,
return;
}
- baseFormat = _mesa_base_tex_format(internalFormat);
+ baseFormat = base_colortab_format(internalFormat);
if (baseFormat < 0 || baseFormat == GL_COLOR_INDEX) {
gl_error(ctx, GL_INVALID_ENUM, "glColorTable(internalFormat)");
return;