Juan A. Suarez Romero
b37b35a5d2
Current code is returning an INVALID_OPERATION when trying to use
getTextureImage() on a level that has not been explicitly defined.
That is, we define a mipmapped Texture2D with 3 levels, and try to use
GetTextureImage() for the 4th levels, and INVALID_OPERATION is returned.
Nevertheless, such case is not listed as an error in OpenGL 4.6 spec,
section 8.11.4 ("Texture Image Queries"), where all the case errors for
this function are defined. So it seems this is a valid operation.
On the other hand, in section 8.22 ("Texture State and Proxy State") it
states:
"Each initial texture image is null. It has zero width, height, and
depth, internal format RGBA, or R8 for buffer textures, component
sizes set to zero and component types set to NONE, the compressed
flag set to FALSE, a zero compressed size, and the bound buffer
object name is zero."
We can assume that we are reading this initialized empty image when
calling GetTextureImage() with a non defined level.
With this assumption, we will reach one of the other error cases defined
for the functions. In the end this means that we would end up returning
INVALID_VALUE to the caller.
This fixes arb_get_texture_sub_image piglit tests.
v2: just return INVALID_VALUE if there is no defined level (Iago)
Signed-off-by: Juan A. Suarez Romero <jasuarez@igalia.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
File: docs/README.WIN32 Last updated: 21 June 2013 Quick Start ----- ----- Windows drivers are build with SCons. Makefiles or Visual Studio projects are no longer shipped or supported. Run scons libgl-gdi to build gallium based GDI driver. This will work both with MSVS or Mingw. Windows Drivers ------- ------- At this time, only the gallium GDI driver is known to work. Source code also exists in the tree for other drivers in src/mesa/drivers/windows, but the status of this code is unknown. Recipe ------ Building on windows requires several open-source packages. These are steps that work as of this writing. - install python 2.7 - install scons (latest) - install mingw, flex, and bison - install pywin32 from here: http://www.lfd.uci.edu/~gohlke/pythonlibs get pywin32-218.4.win-amd64-py2.7.exe - install git - download mesa from git see https://www.mesa3d.org/repository.html - run scons General ------- After building, you can copy the above DLL files to a place in your PATH such as $SystemRoot/SYSTEM32. If you don't like putting things in a system directory, place them in the same directory as the executable(s). Be careful about accidentially overwriting files of the same name in the SYSTEM32 directory. The DLL files are built so that the external entry points use the stdcall calling convention. Static LIB files are not built. The LIB files that are built with are the linker import files associated with the DLL files. The si-glu sources are used to build the GLU libs. This was done mainly to get the better tessellator code. If you have a Windows-related build problem or question, please post to the mesa-dev or mesa-users list.