Index buffer creation changes the bound gl buffer, thus the state has to
be dirtified, similar to locking.
In an error case the function returned without calling LEAVE_GL().
UpdateSurface has to modify one gl texture unit to bind the texture to
load. To restore the correct properties for drawing gl texture unit 0
is activated and dirtified.
Fix the use of the scissor test in Clear. The rectangle is only set if
a clearing rectangle is used, otherwise the scissor test is disabled
(the pixel ownsership test should take care of the window
boarders). To get the scissor test back to the value the app set up
Clear dirtifies the state(s).
Test how shader constant limits are checked in Set*ShaderConstantF.
The vertex shader tests it based on the limits reported in the caps,
the pixel shader tests tries to find the limit manually because I
could not find a cap structure member specifying the pixel shader
constant limit.
Set*ShaderConstantF returns an error as soon as start or start + count
are bigger than the constant limit.
Until we have proper subrectangle handling for offscreen surfaces,
surface conversion has to use the real surface sizes, and not the size
of the opengl subrectangle that it is going to upload. Due to the
power of 2 limitations the gl height may be bigger than the real
surface height. If that is not the case, the uploading function will
pick the correct parts from the converted surface data.
This test contains a table of known supported / known unsupported
queries. In theory wined3d could just report the queries it supports,
but applications may make some assumtions regarding supported /
unsupported queries and stop working if they find a query unexpectadely
supported or unsupported. It also tests what is supposed to happen if an
unsupported query is created.
ARB shaders need a swizzle for the RSQ and RCP instructions, while d3d
shaders do not. The DirectX sdk says that the x component is used if
no swizzle is given.
