http://bugs.freedesktop.org/show_bug.cgi?id=10232
Summary: wrong implementation to translate LUMINANCE format to
RGBA
Product: Mesa
Version: CVS
Platform: All
OS/Version: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Mesa core
AssignedTo: mesa3d-dev@lists.sourceforge.net
ReportedBy: [EMAIL PROTECTED]
CC: [EMAIL PROTECTED], [EMAIL PROTECTED]
According to OpenGL spec(glspec21.20061201.pdf Page 253 table6.1), the rule
that translate texture internal format luminance to RGBA is L->(L, 0, 0, 1).
But in file src/mesa/main/texformat_tmp.h, it is L->(L, L, L, 1), for example:
/* Fetch texel from 1D, 2D or 3D LUMIN texture, returning 4 GLchans */
static void FETCH(luminance)( const struct gl_texture_image *texImage,
GLint i, GLint j, GLint k, GLchan *texel )
{
const GLchan *src = TEXEL_ADDR(GLchan, texImage, i, j, k, 1);
texel[RCOMP] =
texel[GCOMP] =
texel[BCOMP] = src[0];
texel[ACOMP] = CHAN_MAX;
}
Other translation functions related to luminance are also incorrect.
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