[Mesa-dev] [Mesa-users] glClearColor is broken in a weird way if compiled with mangling enabled

[Yuzhu Lu]

Ahh. You are righ. That fixes it. 


Yuzhu 

----- Original Message -----

From: "Brian Paul" <brianp at vmware.com> 
To: "Yuzhu Lu" <yuzhu at wolfram.com> 
Cc: mesa-dev at lists.freedesktop.org, mesa-users at lists.freedesktop.org 
Sent: Monday, August 24, 2015 8:00:52 PM 
Subject: Re: [Mesa-users] [Mesa-dev] glClearColor is broken in a weird way if compiled with mangling enabled 


Looks like your code is not finding any mgl*() prototypes. What 
#includes do you have? I think you need to #include "GL/gl_mangle.h" 
and then "GL/gl.h", IIRC. 

-Brian 

On 08/24/2015 11:42 AM, Yuzhu Lu wrote: 
> Sorry. 
> 
> Here it is: 
> 
> osboxes at osboxes:~/Documents/mesa-demos-8.2.0/src/osdemos$ gcc -o 
> osdemo32 osdemo32.c -I/usr/local/include/ 
> -I/home/osboxes/Documents/mesa-demos-8.2.0/src/util/ -L/usr/local/lib/ 
> -lMangledOSMesa32 
> osdemo32.c: In function ‘Init’: 
> osdemo32.c:122:32: warning: cast to pointer from integer of different 
> size [-Wint-to-pointer-cast] 
> printf("GL_RENDERER = %s\n",(const char *) mglGetString(GL_RENDERER)); 
> ^ 
> osdemo32.c: In function ‘main’: 
> osdemo32.c:449:1: warning: format ‘%s’ expects argument of type ‘char 
> *’, but argument 2 has type ‘int’ [-Wformat=] 
> printf("Vendor: %s\n", mglGetString(GL_VENDOR)); 
> ^ 
> osdemo32.c:450:1: warning: format ‘%s’ expects argument of type ‘char 
> *’, but argument 2 has type ‘int’ [-Wformat=] 
> printf("Renderer: %s\n", mglGetString(GL_RENDERER)); 
> ^ 
> osdemo32.c:451:1: warning: format ‘%s’ expects argument of type ‘char 
> *’, but argument 2 has type ‘int’ [-Wformat=] 
> printf("Version: %s\n", mglGetString(GL_VERSION)); 
> ^ 
> osdemo32.c:452:46: warning: cast to pointer from integer of different 
> size [-Wint-to-pointer-cast] 
> printf("GL_PROGRAM_ERROR_STRING_ARB: = %s\n",(const char 
> *)mglGetString(GL_PROGRAM_ERROR_STRING_ARB)); 
> 
> 
> 
> Yuzhu 
> 
> ------------------------------------------------------------------------ 
> *From: *"Brian Paul" <brianp at vmware.com> 
> *To: *"Yuzhu Lu" <yuzhu at wolfram.com> 
> *Cc: *mesa-dev at lists.freedesktop.org, mesa-users at lists.freedesktop.org 
> *Sent: *Monday, August 24, 2015 6:07:19 PM 
> *Subject: *Re: [Mesa-users] [Mesa-dev] glClearColor is broken in a weird 
> way if compiled with mangling enabled 
> 
> On 08/24/2015 10:51 AM, Yuzhu Lu wrote: 
> > Hi Brian, 
> > 
> > It happens for all the configuration I tried. Here is one example: 
> > 
> > ./configure --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 
> > 
> > I am not sure this is related. I am using 64bit Ubuntu. 
> > 
> > Here are the only warnings I get: 
> > 
> > nir/glsl_to_nir.cpp: In member function 'virtual void 
> > {anonymous}::nir_visitor::visit(ir_call*)': 
> > nir/glsl_to_nir.cpp:610:73: warning: 'op' may be used uninitialized in 
> > this function [-Wmaybe-uninitialized] 
> > nir_intrinsic_instr *instr = nir_intrinsic_instr_create(shader, op); 
> > 
> > nir/nir_lower_phis_to_scalar.c: In function 'is_phi_src_scalarizable': 
> > nir/nir_lower_phis_to_scalar.c:70:14: warning: 'or' of unmatched 
> > not-equal tests is always 1 
> > src_alu->op != nir_op_vec4; 
> > ^ 
> > CXX nir/nir_lower_samplers.lo 
> > nir/nir_lower_samplers.cpp: In function 'void 
> > lower_sampler(nir_tex_instr*, gl_shader_program*, const gl_program*, 
> > void*)': 
> > nir/nir_lower_samplers.cpp:72:9: warning: unused variable 'has_indirect' 
> > [-Wunused-variable] 
> > bool has_indirect = false; 
> 
> I was asking about the compiler options/warnings when you compile your 
> mgl application, not Mesa itself. 
> 
> -Brian 
> 
> 
> 


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