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author | 2019-10-13 13:50:38 +0200 | |
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committer | 2019-10-13 07:50:38 -0400 | |
commit | 0837e7451a84f95c29dbdb9bd6b8b931fee1635d (patch) | |
tree | 626bcbd250a7fbebdf5958a288d2f438d4f9fb5a /3rdparty/bgfx/examples/21-deferred/common.sh | |
parent | c913ccb59d713ce0b91135520719ac5385e54358 (diff) |
WIP: sync bgfx, bx and bimg with latest upstream (#5723)
* Sync with bgfx upstream revision b91d0b6
* Sync with bx upstream revision d60912b
* Sync with bimg upstream revision bd81f60
* Add astc-codec decoder
* Rename VertexDecl to VertexLayout
* Rename UniformType enum Int1 to Sampler.
* Add NVN stub
* Fix unused-const-variable error on macOS
* Drop redundant explicit language parameters
buildoptions_cpp are only applied to c++ files and buildoptions_objcpp are only
applied to objective c++ files. As such, hardcoding -x offers no benefit while
preventing overrides (such as one needed by 3rdparty/bgfx/src/renderer_vk.cpp on
macOS) from working.
* Re-introduce -x c++ in places where C code is compiled as C++ to prevent clang from throwing a warning
* Build bgfx as Objective-C++ on macOS
It is needed due to included headers
* Enable Direct3D12 and Vulkan bgfx rendering backends
* Enable building of spirv shaders
* Properly escape /c in cmd call
* Comment out dx12 bgfx renderer
* Honor VERBOSE setting during shaders build
* Only invert hlsl shader XYZ_TO_sRGB matrix for opengl
* Add spirv shaders
* OpenGL ES needs transposed matrix too
* Metal needs transposed matrix as well
Diffstat (limited to '3rdparty/bgfx/examples/21-deferred/common.sh')
-rw-r--r-- | 3rdparty/bgfx/examples/21-deferred/common.sh | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/3rdparty/bgfx/examples/21-deferred/common.sh b/3rdparty/bgfx/examples/21-deferred/common.sh new file mode 100644 index 00000000000..fcb93f2c013 --- /dev/null +++ b/3rdparty/bgfx/examples/21-deferred/common.sh @@ -0,0 +1,62 @@ +/* + * Copyright 2011-2019 Branimir Karadzic. All rights reserved. + * License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause + */ + +#include "../common/common.sh" + +vec2 blinn(vec3 _lightDir, vec3 _normal, vec3 _viewDir) +{ + float ndotl = dot(_normal, _lightDir); + vec3 reflected = _lightDir - 2.0*ndotl*_normal; // reflect(_lightDir, _normal); + float rdotv = dot(reflected, _viewDir); + return vec2(ndotl, rdotv); +} + +float fresnel(float _ndotl, float _bias, float _pow) +{ + float facing = (1.0 - _ndotl); + return max(_bias + (1.0 - _bias) * pow(facing, _pow), 0.0); +} + +vec4 lit(float _ndotl, float _rdotv, float _m) +{ + float diff = max(0.0, _ndotl); + float spec = step(0.0, _ndotl) * max(0.0, _rdotv * _m); + return vec4(1.0, diff, spec, 1.0); +} + +vec4 powRgba(vec4 _rgba, float _pow) +{ + vec4 result; + result.xyz = pow(_rgba.xyz, vec3_splat(_pow) ); + result.w = _rgba.w; + return result; +} + +vec3 calcLight(vec3 _wpos, vec3 _normal, vec3 _view, vec3 _lightPos, float _lightRadius, vec3 _lightRgb, float _lightInner) +{ + vec3 lp = _lightPos - _wpos; + float attn = 1.0 - smoothstep(_lightInner, 1.0, length(lp) / _lightRadius); + vec3 lightDir = normalize(lp); + vec2 bln = blinn(lightDir, _normal, _view); + vec4 lc = lit(bln.x, bln.y, 1.0); + vec3 rgb = _lightRgb * saturate(lc.y) * attn; + return rgb; +} + +float toClipSpaceDepth(float _depthTextureZ) +{ +#if BGFX_SHADER_LANGUAGE_GLSL + return _depthTextureZ * 2.0 - 1.0; +#else + return _depthTextureZ; +#endif // BGFX_SHADER_LANGUAGE_GLSL +} + +vec3 clipToWorld(mat4 _invViewProj, vec3 _clipPos) +{ + vec4 wpos = mul(_invViewProj, vec4(_clipPos, 1.0) ); + return wpos.xyz / wpos.w; +} + |