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path: root/src/mesa/shader/slang/slang_builtin.h
AgeCommit message (Collapse)Author
2009-08-12glsl: move predefined shader input/output info/code to slang_builtin.cBrian Paul
This is a more logical place for this code. Also add some functions for querying vertex shader input names, types, etc.
2008-12-30mesa: allow variable indexing into the predefined uniform variable arraysBrian Paul
This allows code such as "vec4 a = gl_LightSource[i].ambient;" to work. When a built-in uniform array is indexed with a variable index we need to "unroll" the whole array into the parameter list (aka constant buffer) because we don't know which elements may be accessed at compile-time. In the case of the gl_LightSource array of size [8], we emit 64 state references into the parameter array (8 elements times 8 vec4s per gl_LightSourceParameters struct). Previously, we only allowed constant-indexed references to uniform arrays (such as gl_LightSource[2].position) which resulted in a single state reference being added to the parameter array, not 64. We still optimize this case. Users should be aware that using "gl_LightSource[i].ambient" in their shaders is a bit expensive since state validation will involve updating all 64 light source entries in the parameter list.
2007-07-04Be more consistant with paths in #includes. Eventually, eliminate a bunch ↵Brian
of -I flags.
2007-02-21Reimplement the _slang_alloc_statevar() function.Brian
After several tries at making a table-based system for examining pre-defined uniforms to find statevar indexes, give up and do it the simple way (lots of strcmp() calls). Not terribly elegant, but perfectly functional.
2007-02-21checkpoint overhaul of pre-defined uniform codeBrian
2007-02-20implement support for pre-defined uniform structs (state vars)Brian