WebGL 1.0 / GLSL Limits on this Device
RENDERER = WebKit WebGL
what's doing the WebGL rendering
MAX_VERTEX_ATTRIBS = 16
limit on number of attributes
MAX_VERTEX_UNIFORM_VECTORS = 4096
limit on number of uniforms in vertex shader
MAX_FRAGMENT_UNIFORM_VECTORS = 4096
limit on number of uniforms in fragment shader
MAX_VARYING_VECTORS = 31
limit on number of varying variables
MAX_VIEWPORT_DIMS = [ 8192, 8192 ]
maximum width and height of the viewport
ALIASED_POINT_SIZE_RANGE = [ 1, 1023 ]
range of supported values for gl_PointSize
ALIASED_LINE_WIDTH_RANGE = [ 1, 1 ]
range of supported values for line width
MAX_TEXTURE_SIZE = 8192
maximum width and height of texture images
MAX_CUBE_MAP_TEXTURE_SIZE = 16384
maximum width and height of images in cube map textures
MAX_TEXTURE_IMAGE_UNITS = 32
limit on number of texture units accessed from fragment shader
MAX_VERTEX_TEXTURE_IMAGE_UNITS = 32
limit on number of texture units accessed from vertex shader
MAX_COMBINED_TEXTURE_IMAGE_UNITS = 64
limit on total number of texture units accessed from both shaders
MAX_RENDERBUFFER_SIZE = 8192
maximum width and height for auxiliary drawing buffers
About this demo...
This demo does not do any drawing and is not interactive. Its purpose
is to show the implementation-dependent values associated with certain constants
on the device on which it is run. The values are obtained by calling
gl.getParameeter(). Scroll down the list of constants to see all available
values.
The value for the first constant, RENDERER, is
the name of the system that does WebGL rendering
in the web browser that you are using to view this demo.
The remaining constants represent limits that are enforced by the WebGL
renderer. Many of them are limitations on GLSL shaders. For example,
MAX_VERTEX_ATTRIBS gives the maximum number of attributes that can
be used in a vertex shader. The limitations on texture units refer
to the number of values of sampler variables in the shader.
(The word "ALIASED" in ALIASED_POINT_SIZE_RANGE and
ALIASED_LINE_WIDTH_RANGE is a leftover from OpenGL,
where the limits applied to antialised points and lines. In
WebGL, the limits have nothing to do with aliasing. They apply to
all points and lines.)
The demo uses a WebGL 1.0 drawing context. It is possible that
some values might differ for a WebGL 2.0 context on the same
device. (On my computer, that's true for ALIASED_LINE_WIDTH_RANGE.)
