Add Immediate command data size validation....

Add Immediate command data size validation.

Adds checks that Immediate commands all
check the sizeo of the data they are going 
to access is valid.

Also adds Vertex Attribute validation for
glDrawXXX.  In order to accomplish this
it must track buffers and their sizes,
the settings set with glVertexAttribPointer,
program info at glLinkProgram time and which
program as active via glUseProgram

Given all that info it can validate that is
is okay to call glDrawArray or glDrawElements.

TEST=none
BUG=none


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=35135

[apatrick, 2009-12-18 00:50:00]

LGTM

[greggman, 2009-12-22 01:57:53]

Could you re-review this? I got tired of waiting last Friday for the tree to
open and ended up adding more stuff.

I added validation of the vertex attributes.

Thanks.

[apatrick, 2009-12-22 02:37:21]

LGTM. I don't think this can break Chrome if you check it it now. I haven't yet
checked in the CL that makes the bots build the command buffer code.

http://codereview.chromium.org/501097/diff/13/4004
File gpu/command_buffer/service/gles2_cmd_decoder.cc (right):

http://codereview.chromium.org/501097/diff/13/4004#newcode426
gpu/command_buffer/service/gles2_cmd_decoder.cc:426: // Wrapper for glBindBuffer
since we need to track the current targets.
BindBuffer -> DrawArrays

http://codereview.chromium.org/501097/diff/13/4004#newcode507
gpu/command_buffer/service/gles2_cmd_decoder.cc:507: // Infor for each buffer in
the system.
Infor -> Info