Sounds like the file is being compiled without having proper prototypes
for all the mgl functions. Do you see any compiler warnings when you
build? What gcc compiler options are you using?
-Brian
On 08/19/2015 06:18 PM, Yuzhu Lu wrote:
Update:
All function with GLclampf and GLfloat are messed up. But pointer are
fine. Other datatype works fine as well. I never had such a weird issue
before. The work around to replace it with GLdouble.
Yuzhu
------------------------------------------------------------------------
*From: *"Yuzhu Lu" <yu...@wolfram.com>
*To: *mesa-dev@lists.freedesktop.org, mesa-us...@lists.freedesktop.org
*Sent: *Wednesday, August 19, 2015 5:15:46 PM
*Subject: *Re: [Mesa-dev] glClearColor is broken in a weird way if
compiled with mangling enabled
It seems related to datatype GLclampf, which affects mglClearColor,
mglBlendColor... If I replace it with double, everything works fine. Any
ideas?
Yuzhu
------------------------------------------------------------------------
*From: *"Yuzhu Lu" <yu...@wolfram.com>
*To: *mesa-dev@lists.freedesktop.org, mesa-us...@lists.freedesktop.org
*Sent: *Friday, August 14, 2015 1:22:05 PM
*Subject: *[Mesa-dev] glClearColor is broken in a weird way if compiled
with mangling enabled
Hi All,
Since I need to load osmesa and system GL api at the same time on Linux,
I need to compile 10.5.9 osmesa in a mangled way. After a simple fix in
glapi.h:
/* Is this needed? It is incomplete anyway. */
/*
#ifdef USE_MGL_NAMESPACE
#define _glapi_set_dispatch _mglapi_set_dispatch
#define _glapi_get_dispatch _mglapi_get_dispatch
#define _glapi_set_context _mglapi_set_context
#define _glapi_get_context _mglapi_get_context
#define _glapi_Dispatch _mglapi_Dispatch
#define _glapi_Context _mglapi_Context
#endif
*/
Now it compiles fine and here is my configuration:
./configure CFLAGS="-O2" CXXFLAGS="-O2" --disable-xvmc --disable-glx
--disable-dri --with-dri-drivers="" --with-gallium-drivers="swrast"
--enable-texture-float --enable-shared-glapi --disable-egl
--enable-mangling --with-egl-platforms="" --enable-gallium-osmesa
--enable-gallium-llvm=yes --disable-llvm-shared-libs
--with-osmesa-bits=32 --with-max-width=65536 --with-max-height=65536
But glClearColor is broken in a weird way that the value passed in is
revised internally. Here is my call:
mglClearColor(0.5f, 0.3f, 0.3f, 0.3f);
But if I print out the value in _mesa_ClearColor() method of Clear.c. It
shows:
ClearColor: 0.000000, 2.000000, 2.000000, 2.000000
I totally have no idea why this is happening while everything works fine
with mangling disabled.
Also, the compiler complains that mglGetString returns int instead of
const GLubyte*:
osdemo32.c:441:1: warning: format ‘%s’ expects argument of type ‘char
*’, but argument 2 has type ‘int’ [-Wformat=]
printf("Version: %s\n", mglGetString(GL_VERSION));
And mglGetString(GL_SHADING_LANGUAGE_VERSION) will crash the application
while other string works fine.
I also try to compile it with disable-shared-glapi flag, but I get
errors. I am not sure this is because gl_mangle.h is dated. (If I
manually add the following functions in gl_mangle.h, it compiles fine
but some functions like glCreateShader will be totally messed up.)
I would really appreciate it if someone have solutions because this is a
very important project for us.
CXXLD libMangledOSMesa32.la
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x5588):
undefined reference to `glPointSizePointerOES'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6ae8):
undefined reference to `glPolygonOffsetClampEXT'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6b78):
undefined reference to `glAlphaFuncx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6b90):
undefined reference to `glClearColorx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6ba8):
undefined reference to `glClearDepthx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6bc0):
undefined reference to `glColor4x'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6bd8):
undefined reference to `glDepthRangex'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6bf0):
undefined reference to `glFogx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6c08):
undefined reference to `glFogxv'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6c20):
undefined reference to `glFrustumf'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6c38):
undefined reference to `glFrustumx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6c50):
undefined reference to `glLightModelx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6c68):
undefined reference to `glLightModelxv'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6c80):
undefined reference to `glLightx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6c98):
undefined reference to `glLightxv'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6cb0):
undefined reference to `glLineWidthx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6cc8):
undefined reference to `glLoadMatrixx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6ce0):
undefined reference to `glMaterialx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6cf8):
undefined reference to `glMaterialxv'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6d10):
undefined reference to `glMultMatrixx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6d28):
undefined reference to `glMultiTexCoord4x'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6d40):
undefined reference to `glNormal3x'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6d58):
undefined reference to `glOrthof'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6d70):
undefined reference to `glOrthox'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6d88):
undefined reference to `glPointSizex'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6da0):
undefined reference to `glPolygonOffsetx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6db8):
undefined reference to `glRotatex'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6dd0):
undefined reference to `glSampleCoveragex'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6de8):
undefined reference to `glScalex'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6e00):
undefined reference to `glTexEnvx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6e18):
undefined reference to `glTexEnvxv'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6e30):
undefined reference to `glTexParameterx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6e48):
undefined reference to `glTranslatex'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6e60):
undefined reference to `glClipPlanef'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6e78):
undefined reference to `glClipPlanex'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6e90):
undefined reference to `glGetClipPlanef'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6ea8):
undefined reference to `glGetClipPlanex'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6ec0):
undefined reference to `glGetFixedv'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6ed8):
undefined reference to `glGetLightxv'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6ef0):
undefined reference to `glGetMaterialxv'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6f08):
undefined reference to `glGetTexEnvxv'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6f20):
undefined reference to `glGetTexParameterxv'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6f38):
undefined reference to `glPointParameterx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6f50):
undefined reference to `glPointParameterxv'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x6f68):
undefined reference to `glTexParameterxv'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9b78):
undefined reference to `glAlphaFuncx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9b90):
undefined reference to `glClearColorx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9ba8):
undefined reference to `glClearDepthx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9bc0):
undefined reference to `glColor4x'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9bd8):
undefined reference to `glDepthRangex'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9bf0):
undefined reference to `glFogx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9c08):
undefined reference to `glFogxv'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9c20):
undefined reference to `glFrustumf'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9c38):
undefined reference to `glFrustumx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9c50):
undefined reference to `glLightModelx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9c68):
undefined reference to `glLightModelxv'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9c80):
undefined reference to `glLightx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9c98):
undefined reference to `glLightxv'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9cb0):
undefined reference to `glLineWidthx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9cc8):
undefined reference to `glLoadMatrixx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9ce0):
undefined reference to `glMaterialx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9cf8):
undefined reference to `glMaterialxv'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9d10):
undefined reference to `glMultMatrixx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9d28):
undefined reference to `glMultiTexCoord4x'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9d40):
undefined reference to `glNormal3x'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9d58):
undefined reference to `glOrthof'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9d70):
undefined reference to `glOrthox'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9d88):
undefined reference to `glPointSizex'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9da0):
undefined reference to `glPolygonOffsetx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9db8):
undefined reference to `glRotatex'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9dd0):
undefined reference to `glSampleCoveragex'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9de8):
undefined reference to `glScalex'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9e00):
undefined reference to `glTexEnvx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9e18):
undefined reference to `glTexEnvxv'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9e30):
undefined reference to `glTexParameterx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9e48):
undefined reference to `glTranslatex'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9e60):
undefined reference to `glClipPlanef'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9e78):
undefined reference to `glClipPlanex'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9e90):
undefined reference to `glGetClipPlanef'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9ea8):
undefined reference to `glGetClipPlanex'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9ec0):
undefined reference to `glGetFixedv'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9ed8):
undefined reference to `glGetLightxv'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9ef0):
undefined reference to `glGetMaterialxv'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9f08):
undefined reference to `glGetTexEnvxv'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9f20):
undefined reference to `glGetTexParameterxv'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9f38):
undefined reference to `glPointParameterx'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9f50):
undefined reference to `glPointParameterxv'
../../../../src/mapi/glapi/.libs/libglapi.a(glapi_libglapi_la-glapi_getproc.o):(.data.rel.ro+0x9f68):
undefined reference to `glTexParameterxv'
collect2: error: ld returned 1 exit status
Yuzhu Lu
Senior User Interface Developer
Wolfram Research Inc.
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