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Document how to add a new feature enabled by an extension in Versions.cpp. Also reorganized slightly to localize related functions.

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git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@23376 e7fa87d3-cd2b-0410-9028-fcbf551c1848
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John Kessenich 2013-10-03 20:23:57 +00:00
parent a5830dfc0e
commit 61c2d1410a
12 changed files with 336 additions and 197 deletions
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24
Todo.txt
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@ -1,7 +1,5 @@
Current functionality level: ESSL 3.0
- extension adding process
Link Validation
+ provide input config file for setting limits
- also consider spitting out measures of complexity
@ -166,22 +164,24 @@ Shader Functionality to Implement/Finish
- Allow swizzle operations on scalars.
- Positive signed decimal literals, as well as octal and hexadecimal, can set all 32 bits. This includes setting the sign bit to create a negative value.
- Make GLSL consistent with the API regarding user clipping, by no longer referring to gl_Positionwhen gl_ClipVertex is not written. Rather, user clipping becomes undefined.
- Clarified that a comma sequence-operator expression cannot be a constant expression. E.g., “(2,3)” is not allowed, semantically, as a valid constant expression 3, even though it is an expression that will evaluate to 3.
- Clarified that a comma sequence-operator expression cannot be a constant expression. E.g., “(2,3)” is not allowed, semantically,
as a valid constant expression 3, even though it is an expression that will evaluate to 3.
- Use vec2 instead of vec3 for coordinate in textureGather*(sampler2DRect,...).
- Clarify that textureGatherOffset() can take non-constants for the offsets.
GLSL 4.3
- Add shader storage bufferobjects, as per the ARB_shader_storage_buffer_object extension.
This includes 1) allowing the last member of a storage buffer block to be an array that does not
know its size until render time, and 2) read/write memory shared with the application and other
shader invocations. It also adds the std430layout qualifier for shader storage blocks.
- Add shader storage buffer objects, as per the ARB_shader_storage_buffer_object extension. This includes
- allowing the last member of a storage buffer block to be an array that does not know its size until render time
- read/write memory shared with the application and other shader invocations
- adding the std430 layout qualifier for shader storage blocks
- Allow .length() on all arrays; returning a compile-time constant or not, depending on how the
array is sized, as per the ARB_shader_storage_buffer_object extension.
- Be clear that implicit array sizing is only within a stage, not cross stage.
- Array clarifications: 1) All arrays are inherently homogeneous, except for arrays of the new
shader storage buffer objects. 2) Arrays of shader storage buffer objects will be dereferenced
when the .length() method is used on an unsized array member, so that must a have valid index.
3) Arrays of other objects (uniform blocks) containing implicitly sized arrays will have the same
implicit size for all elements of the array.
- Array clarifications:
- All arrays are inherently homogeneous, except for arrays of the new shader storage buffer objects
- Arrays of shader storage buffer objects will be dereferenced when the .length() method is used on an unsized array
member, so that must a have valid index.
- Arrays of other objects (uniform blocks) containing implicitly sized arrays will have the same implicit size for all
elements of the array.
- Arrays of arrays are now supported, as per the GL_ARB_arrays_of_arraysextension.
- Compute shaders are now supported, as per the GL_ARB_compute_shader extension.
- Added imageSize() built-ins to query the dimensions of an image.