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Add swizzles to scalars.

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git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@23580 e7fa87d3-cd2b-0410-9028-fcbf551c1848
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John Kessenich 2013-10-18 03:56:23 +00:00
parent 8d8f4cc408
commit 8f13e1322d
8 changed files with 159 additions and 60 deletions
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Todo.txt
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@ -60,31 +60,31 @@ Shader Functionality to Implement/Finish
GLSL 1.3 (Non-ES)
- Preprocessor token pasting (##), ## does macro expansion after pasting not before
- non-perspective (linear) interpolation (noperspective)
- add gl_ClipDistance[] to both vertex and fragment shaders
+ add gl_ClipDistance[] to both vertex and fragment shaders
- only statically used built-ins have to be redeclared as flat
- Deprecated gl_ClipVertex
- deprecate almost all built-in state
- ftransform() is deprecated
- Deprecated built-in vertex inputs (attributes) and some outputs (varyings).
+ Deprecated gl_ClipVertex
+ deprecate almost all built-in state
+ ftransform() is deprecated
+ Deprecated built-in vertex inputs (attributes) and some outputs (varyings).
GLSL 1.4 (Non-ES)
- track as removed in this release, but present in others:
- Use of gl_ClipVertex. Use gl_ClipDistance instead.
- Built-in vertex shader inputs.
- Built-in uniforms except for depth range parameters
- Built-in interface between vertex and fragment: gl_TexCoord, gl_FogFragCoord, and all the color values.
- Built-in two-sided coloring.
- Fixed functionality for a programmable stage.
- ftransform(). Use invariant outputs instead.
+ track as removed in this release, but present in others:
+ Use of gl_ClipVertex. Use gl_ClipDistance instead.
+ Built-in vertex shader inputs.
+ Built-in uniforms except for depth range parameters
+ Built-in interface between vertex and fragment: gl_TexCoord, gl_FogFragCoord, and all the color values.
+ Built-in two-sided coloring.
+ Fixed functionality for a programmable stage.
+ ftransform(). Use invariant outputs instead.
GLSL 1.5 (Non-ES)
- Deprecated gl_MaxVaryingComponents
- Add new minimum maximums for gl_MaxVertexOutputComponents, gl_MaxGeometryInputComponents, gl_MaxGeometryOutputComponents, and gl_MaxFragmentInputComponents,
rather than relying on gl_MaxVaryingComponents. Also, corrected gl_MaxVaryingComponents to be 60 instead of 64.
- Added gl_PrimitiveID as an input to fragment shaders.
+ Added gl_PrimitiveID as an input to fragment shaders.
- Added gl_FragCoord qualifiers origin_upper_left, and pixel_center_integer to modify the values returned by gl_FragCoord (and have no affect on any other aspect of the pipeline or language).
- including redeclaration of gl_FragCoord that adds nothing
- Added support for multi-sample textures through sampler2DMS and sampler2DMSArray support in texelFetch() and textureSize().
- Broadened interface blocks from just uniforms to in and out interfaces as well.
- Broaden array usage to include vertex shader inputs (vertex in).
+ Broadened interface blocks from just uniforms to in and out interfaces as well.
+ Broaden array usage to include vertex shader inputs (vertex in).
- Added geometry shaders. This includes targeting layers in FBO rendering.
- geometry shader layouts: they must be declared, telling the system the primitive input and output types and maximum number of vertices.
- Added geometry shader constants.
@ -119,8 +119,8 @@ Shader Functionality to Implement/Finish
- textureGather()
- textureGatherOffset()
- textureGatherOffsets()
- Add streams out from geometry shader. Output can be directed to streams through
- EmitStreamVertex() and EndStreamPrimitive().
+ Add streams out from geometry shader. Output can be directed to streams through
+ EmitStreamVertex() and EndStreamPrimitive().
GLSL 4.1
- Support for partitioning shaders into multiple programs to provide light-weight mixing of different shader stages.
(GL_ARB_separate_shader_objects)
@ -150,7 +150,7 @@ Shader Functionality to Implement/Finish
+ Variables declared in if and else statements are scoped only to the end of those statements, especially for non-compound statements
Note, this is not backward compatible, it may depend on #version.
- Allow implicit conversions of return values to the declared type of the function.
- The const keyword can be used to declare variables within a function body with initializer expressions that are not constant expressions.
+ The const keyword can be used to declare variables within a function body with initializer expressions that are not constant expressions.
+ Qualifiers on variable declarations no longer have to follow a strict order. The layout qualifier can be used multiple times, and multiple parameter qualifiers can be used.
+ Parameter qualifiers can include precision and memory qualifiers.
- Add a new atomic_uint type to support atomic counters. Also, add built-in functions for manipulating atomic counters.
@ -160,12 +160,12 @@ Shader Functionality to Implement/Finish
- packHalf2x16 and unpackHalf2x16
- packSnorm2x16and unpackSnorm2x16
- Add gl_FragDepthlayout qualifiers to communicate what kind of changes will be made to gl_FragDepth(GL_AMD_conservative depth).
- Add C-style curly brace initializer lists syntax for initializers. Full initialization of aggregates is required when these are used.
+ Add C-style curly brace initializer lists syntax for initializers. Full initialization of aggregates is required when these are used.
- Allow .length() to be applied to vectors and matrices, returning the number of components or columns.
+ Clarify that .length() returns an int type and can be used as a constant integer expression.
- Allow swizzle operations on scalars.
+ 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.
- Make GLSL consistent with the API regarding user clipping, by no longer referring to gl_Position when 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.
- Use vec2 instead of vec3 for coordinate in textureGather*(sampler2DRect,...).