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0d3d3210d4
This patch make GLSL writer support emitting f16 types, f16 literals, f16 constructor and convertor. Unittests are also implemented, and end-to-end testcases are updated for GLSL extension requirement. The GLSL writer will require `GL_AMD_gpu_shader_half_float` extension if f16 WGSL extension is enabled, emit f16 literal as `1.23hf`, and map f16 types as follow: WGSL type -> GLSL type f16 -> float16_t vec2<f16> -> f16vec2 vec3<f16> -> f16vec3 vec4<f16> -> f16vec4 mat2x2<f16> -> f16mat2 mat2x3<f16> -> f16mat2x3 mat2x4<f16> -> f16mat2x4 mat3x2<f16> -> f16mat3x2 mat3x3<f16> -> f16mat3 mat3x4<f16> -> f16mat3x4 mat4x2<f16> -> f16mat4x2 mat4x3<f16> -> f16mat4x3 mat4x4<f16> -> f16mat4 Bug: tint:1473, tint:1502 Change-Id: I7e788f82be2873911961c891a644200c1cbb74db Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/95684 Kokoro: Kokoro <noreply+kokoro@google.com> Commit-Queue: Zhaoming Jiang <zhaoming.jiang@intel.com> Reviewed-by: Ben Clayton <bclayton@google.com>