Re: [Mesa-dev] COMPSIZE function in OpenGL XML registry
Thank you Ian, Jose and Matt. I'll take a look at the pointers you provided. Probably would come back with some more questions. Thanks, Shervin On Wed, Jun 10, 2015 at 3:55 PM, Ian Romanick i...@freedesktop.org wrote: On 06/10/2015 03:05 PM, Shervin Sharifi wrote: Thanks Ian. If I want to implement the actual CompSize function, how should I figure out the details? The way I did it for the GLX protocol code in Mesa is to make a glFoo_compsize function for each GL function that has a variable sized array as input. Often these functions can be shared (e.g., the function for glTexParameteriv and glTexParameterfv are the same). You have to read the docs to figure out that, for example, passing GL_TEXTURE_BASE_LEVEL to glTexParameteriv means there's 1 value but passing GL_TEXTURE_BORDER_COLOR means there are 4 values. I implemented that in Mesa (many years before the current Khronos XML existed) by having additional decorations in my XML. Each enum specifies which functions can use it and how many values it carries. The Khronos XML specifies which enums can be passed to which functions (via group), but it doesn't look like it has any information about how much data goes along with it. :( Thanks, Shervin On Wed, Jun 10, 2015 at 2:56 PM, Ian Romanick i...@freedesktop.org mailto:i...@freedesktop.org wrote: On 06/10/2015 11:25 AM, Shervin Sharifi wrote: Hi, This may not be the right forum to ask this, but I didn't know of a better forum, so I thought I can ask here. I'm new to OpenGL. I am looking at XML registry for OpenGL and there are some parameters with attributes containing a function COMPSIZE (I've pasted an example below). I tried to find information on what the COMPSIZE function is, where/how it is used, etc, but couldn't find documentation or credible information on the Internet. Any information or pointer to that would be really helpful. It's a signal to code generation scripts that the size of the data referenced by the pointer parameter depends on the values of type and stride. For example, GLX protocol code uses this to know how much image data to send to the server for glTexImage2D. Thanks, Shervin This example is from gl.xml in the OpenGL registry: command protovoid nameglBinormalPointerEXT/name/proto param group=BinormalPointerTypeEXTptypeGLenum/ptype nametype/name/param paramptypeGLsizei/ptype namestride/name/param param len=COMPSIZE(type,stride)const void *namepointer/name/param /command ___ mesa-dev mailing list mesa-dev@lists.freedesktop.org mailto: mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev ___ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
Re: [Mesa-dev] COMPSIZE function in OpenGL XML registry
On Wed, Jun 10, 2015 at 11:25 AM, Shervin Sharifi sherv...@gmail.com wrote: Hi, This may not be the right forum to ask this, but I didn't know of a better forum, so I thought I can ask here. I'm new to OpenGL. I am looking at XML registry for OpenGL and there are some parameters with attributes containing a function COMPSIZE (I've pasted an example below). I tried to find information on what the COMPSIZE function is, where/how it is used, etc, but couldn't find documentation or credible information on the Internet. Any information or pointer to that would be really helpful. Thanks, Shervin This example is from gl.xml in the OpenGL registry: command protovoid nameglBinormalPointerEXT/name/proto param group=BinormalPointerTypeEXTptypeGLenum/ptype nametype/name/param paramptypeGLsizei/ptype namestride/name/param param len=COMPSIZE(type,stride)const void *namepointer/name/param /command I'm just speculating, but I don't think there's really a definition of COMPSIZE or anything. I think it's just a way of saying that, for instance, the size of the memory pointed by the pointer parameter to glBinormalPointerEXT is a function of the type and stride parameters. Other functions, like glBitmap have similar things: param len=COMPSIZE(width,height)const ptypeGLubyte/ptype *namebitmap/name/param That is, the size of the block of memory pointed to by bitmap is described by the width and height parameters. ___ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
Re: [Mesa-dev] COMPSIZE function in OpenGL XML registry
On 06/10/2015 03:05 PM, Shervin Sharifi wrote: Thanks Ian. If I want to implement the actual CompSize function, how should I figure out the details? The way I did it for the GLX protocol code in Mesa is to make a glFoo_compsize function for each GL function that has a variable sized array as input. Often these functions can be shared (e.g., the function for glTexParameteriv and glTexParameterfv are the same). You have to read the docs to figure out that, for example, passing GL_TEXTURE_BASE_LEVEL to glTexParameteriv means there's 1 value but passing GL_TEXTURE_BORDER_COLOR means there are 4 values. I implemented that in Mesa (many years before the current Khronos XML existed) by having additional decorations in my XML. Each enum specifies which functions can use it and how many values it carries. The Khronos XML specifies which enums can be passed to which functions (via group), but it doesn't look like it has any information about how much data goes along with it. :( Thanks, Shervin On Wed, Jun 10, 2015 at 2:56 PM, Ian Romanick i...@freedesktop.org mailto:i...@freedesktop.org wrote: On 06/10/2015 11:25 AM, Shervin Sharifi wrote: Hi, This may not be the right forum to ask this, but I didn't know of a better forum, so I thought I can ask here. I'm new to OpenGL. I am looking at XML registry for OpenGL and there are some parameters with attributes containing a function COMPSIZE (I've pasted an example below). I tried to find information on what the COMPSIZE function is, where/how it is used, etc, but couldn't find documentation or credible information on the Internet. Any information or pointer to that would be really helpful. It's a signal to code generation scripts that the size of the data referenced by the pointer parameter depends on the values of type and stride. For example, GLX protocol code uses this to know how much image data to send to the server for glTexImage2D. Thanks, Shervin This example is from gl.xml in the OpenGL registry: command protovoid nameglBinormalPointerEXT/name/proto param group=BinormalPointerTypeEXTptypeGLenum/ptype nametype/name/param paramptypeGLsizei/ptype namestride/name/param param len=COMPSIZE(type,stride)const void *namepointer/name/param /command ___ mesa-dev mailing list mesa-dev@lists.freedesktop.org mailto:mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev ___ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
Re: [Mesa-dev] COMPSIZE function in OpenGL XML registry
Thank you. I think there should be a way to calculate the size of the memory location pointed by that pointer. For cases where there is no shared memory between the client and the server, the memory contents should be copied back and forth, which means the size of the pointer should be known (unless I'm missing something). Thanks, Shervin On Wed, Jun 10, 2015 at 11:44 AM, Matt Turner matts...@gmail.com wrote: On Wed, Jun 10, 2015 at 11:25 AM, Shervin Sharifi sherv...@gmail.com wrote: Hi, This may not be the right forum to ask this, but I didn't know of a better forum, so I thought I can ask here. I'm new to OpenGL. I am looking at XML registry for OpenGL and there are some parameters with attributes containing a function COMPSIZE (I've pasted an example below). I tried to find information on what the COMPSIZE function is, where/how it is used, etc, but couldn't find documentation or credible information on the Internet. Any information or pointer to that would be really helpful. Thanks, Shervin This example is from gl.xml in the OpenGL registry: command protovoid nameglBinormalPointerEXT/name/proto param group=BinormalPointerTypeEXTptypeGLenum/ptype nametype/name/param paramptypeGLsizei/ptype namestride/name/param param len=COMPSIZE(type,stride)const void *namepointer/name/param /command I'm just speculating, but I don't think there's really a definition of COMPSIZE or anything. I think it's just a way of saying that, for instance, the size of the memory pointed by the pointer parameter to glBinormalPointerEXT is a function of the type and stride parameters. Other functions, like glBitmap have similar things: param len=COMPSIZE(width,height)const ptypeGLubyte/ptype *namebitmap/name/param That is, the size of the block of memory pointed to by bitmap is described by the width and height parameters. ___ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
Re: [Mesa-dev] COMPSIZE function in OpenGL XML registry
On 06/10/2015 11:25 AM, Shervin Sharifi wrote: Hi, This may not be the right forum to ask this, but I didn't know of a better forum, so I thought I can ask here. I'm new to OpenGL. I am looking at XML registry for OpenGL and there are some parameters with attributes containing a function COMPSIZE (I've pasted an example below). I tried to find information on what the COMPSIZE function is, where/how it is used, etc, but couldn't find documentation or credible information on the Internet. Any information or pointer to that would be really helpful. It's a signal to code generation scripts that the size of the data referenced by the pointer parameter depends on the values of type and stride. For example, GLX protocol code uses this to know how much image data to send to the server for glTexImage2D. Thanks, Shervin This example is from gl.xml in the OpenGL registry: command protovoid nameglBinormalPointerEXT/name/proto param group=BinormalPointerTypeEXTptypeGLenum/ptype nametype/name/param paramptypeGLsizei/ptype namestride/name/param param len=COMPSIZE(type,stride)const void *namepointer/name/param /command ___ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev ___ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
Re: [Mesa-dev] COMPSIZE function in OpenGL XML registry
Thanks Ian. If I want to implement the actual CompSize function, how should I figure out the details? Thanks, Shervin On Wed, Jun 10, 2015 at 2:56 PM, Ian Romanick i...@freedesktop.org wrote: On 06/10/2015 11:25 AM, Shervin Sharifi wrote: Hi, This may not be the right forum to ask this, but I didn't know of a better forum, so I thought I can ask here. I'm new to OpenGL. I am looking at XML registry for OpenGL and there are some parameters with attributes containing a function COMPSIZE (I've pasted an example below). I tried to find information on what the COMPSIZE function is, where/how it is used, etc, but couldn't find documentation or credible information on the Internet. Any information or pointer to that would be really helpful. It's a signal to code generation scripts that the size of the data referenced by the pointer parameter depends on the values of type and stride. For example, GLX protocol code uses this to know how much image data to send to the server for glTexImage2D. Thanks, Shervin This example is from gl.xml in the OpenGL registry: command protovoid nameglBinormalPointerEXT/name/proto param group=BinormalPointerTypeEXTptypeGLenum/ptype nametype/name/param paramptypeGLsizei/ptype namestride/name/param param len=COMPSIZE(type,stride)const void *namepointer/name/param /command ___ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev ___ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
Re: [Mesa-dev] COMPSIZE function in OpenGL XML registry
I'm not sure what you are trying to accomplish. if you're doing some sort of serialization of OpenGL calls other than GLX, then it might be worthwhile to look at https://github.com/apitrace/apitrace/blob/master/specs/glapi.py https://github.com/apitrace/apitrace/blob/master/helpers/glsize.hpp Jose On 10/06/15 23:05, Shervin Sharifi wrote: Thanks Ian. If I want to implement the actual CompSize function, how should I figure out the details? Thanks, Shervin On Wed, Jun 10, 2015 at 2:56 PM, Ian Romanick i...@freedesktop.org mailto:i...@freedesktop.org wrote: On 06/10/2015 11:25 AM, Shervin Sharifi wrote: Hi, This may not be the right forum to ask this, but I didn't know of a better forum, so I thought I can ask here. I'm new to OpenGL. I am looking at XML registry for OpenGL and there are some parameters with attributes containing a function COMPSIZE (I've pasted an example below). I tried to find information on what the COMPSIZE function is, where/how it is used, etc, but couldn't find documentation or credible information on the Internet. Any information or pointer to that would be really helpful. It's a signal to code generation scripts that the size of the data referenced by the pointer parameter depends on the values of type and stride. For example, GLX protocol code uses this to know how much image data to send to the server for glTexImage2D. Thanks, Shervin This example is from gl.xml in the OpenGL registry: command protovoid nameglBinormalPointerEXT/name/proto param group=BinormalPointerTypeEXTptypeGLenum/ptype nametype/name/param paramptypeGLsizei/ptype namestride/name/param param len=COMPSIZE(type,stride)const void *namepointer/name/param /command ___ mesa-dev mailing list mesa-dev@lists.freedesktop.org mailto:mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev ___ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev ___ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
