Merge pull request #1 from Andreyogld3d/patch-1

Added information about HLSL to what_is_spirv.md

chapters/what_is_spirv.md

@@ -1,6 +1,6 @@
 # What is SPIR-V
 
-[SPIR-V](https://www.khronos.org/registry/spir-v/) is a binary intermediate representation for graphical-shader stages and compute kernels. With Vulkan, you can still write your shaders in a high level language such as GLSL, but a SPIR-V binary is needed when using [vkCreateShaderModule](https://www.khronos.org/registry/vulkan/specs/1.1/html/vkspec.html#vkCreateShaderModule). The Vulkan SDK has a very nice [white paper](https://www.khronos.org/registry/spir-v/papers/WhitePaper.pdf) about SPIR-V and its advantages, and a high-level description of the representation. There are also two great Khronos presentations from Vulkan DevDay 2016 [here](https://www.khronos.org/assets/uploads/developers/library/2016-vulkan-devday-uk/3-Intro-to-spir-v-shaders.pdf) and [here](https://www.khronos.org/assets/uploads/developers/library/2016-vulkan-devday-uk/4-Using-spir-v-with-spirv-cross.pdf)
+[SPIR-V](https://www.khronos.org/registry/spir-v/) is a binary intermediate representation for graphical-shader stages and compute kernels. With Vulkan, you can still write your shaders in a high level language such as GLSL or HLSL, but a SPIR-V binary is needed when using [vkCreateShaderModule](https://www.khronos.org/registry/vulkan/specs/1.1/html/vkspec.html#vkCreateShaderModule). The Vulkan SDK has a very nice [white paper](https://www.khronos.org/registry/spir-v/papers/WhitePaper.pdf) about SPIR-V and its advantages, and a high-level description of the representation. There are also two great Khronos presentations from Vulkan DevDay 2016 [here](https://www.khronos.org/assets/uploads/developers/library/2016-vulkan-devday-uk/3-Intro-to-spir-v-shaders.pdf) and [here](https://www.khronos.org/assets/uploads/developers/library/2016-vulkan-devday-uk/4-Using-spir-v-with-spirv-cross.pdf)
 ([video of both](https://www.youtube.com/watch?v=XRpVwdduzgU)).
 
 ![what_is_spirv_overview.png](../images/what_is_spirv_overview.png)