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2916. By Alexandros Frantzis on 2012-04-02

opengl: Refactor shader infrastructure to use small, performant programs.

This commit replaces the single complicated shader with minimal,
performant shaders, tailored to specific use cases. The new GLShaderCache
object is used for creating and caching the shader data for specific uses
cases (GLShaderParameters).

This commit also adds automatic creation of suitable GL programs in
GLVertexBuffers (see ::setAutoProgram) that don't have a program
explicitly set.

2915. By Alexandros Frantzis on 2012-03-29

opengl: Ensure blending is enabled, when needed, when drawing window contents.

2914. By Alexandros Frantzis on 2012-03-21

Sync with lp:compiz-core.

2913. By Alexandros Frantzis on 2012-03-13

Sync with lp:compiz-core.

2912. By Alexandros Frantzis on 2012-03-13

Work around compile issue on ARM.

When compiling with -O2 on ARM, the original code leads to an array index out
of bounds compilation error. In that case, the compiler doesn't infer that
sizeof(a)/sizeof(T) is a constant, and tries to compile cases in the switch
statement that use array indices that are invalid for the particular template
instantiation.

To fix this we use the 'C' template variable, which is constant for each
template instantiation, directly in the switch statement.

2911. By Frederic Plourde on 2012-03-09

Fix decoration mapping instabilities and texturing artefacts.

2910. By Alexandros Frantzis on 2012-03-05

Sync with lp:compiz-core

2909. By Alexandros Frantzis on 2012-03-05

Correct count of wrapable functions in GLScreen.

2908. By Alexandros Frantzis on 2012-03-05

Use new WRAPABLE_HND_* macros.

2907. By Alexandros Frantzis on 2012-03-02

Sync with lp:compiz-core.