Shawn Walker-Salas binarycrusader

Windows Developer @microsoft. Hobbyist Game Developer. My words are my own and not those of any affiliate or employer.

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rygorous / d3dcompiler.cpp

Last active December 31, 2015 04:39

Using Win8 d3dcompiler without using Platform SDK headers for everything

	// Okay, the Win8 version of d3dcompiler.dll is substantially faster to compile
	// shaders, but switching to the Win8 SDK outright is painful if you need to
	// support older compilers (the new headers don't work with old VC++ versions)
	// or use D3DX.
	//
	// However, there's a dead simple solution that works just fine.
	// Just link against June 2010 DX SDK d3dcompiler.lib and use its header files,
	// then do this:

	typedef HRESULT (__stdcall d3d_compile_func)(LPCVOID pSrcData, SIZE_T SrcDataSize, LPCSTR pSourceName, const D3D_SHADER_MACRO pDefines, ID3DInclude pInclude, LPCSTR pEntrypoint, LPCSTR pTarget, UINT Flags1, UINT Flags2, ID3DBlob ppCode, ID3DBlob ppErrorMsgs);

rygorous / glx.cpp

Created December 9, 2013 01:28

GLX

	GLuint glx_compile_shader_source( GLenum type, char const * source )
	{
	if ( !source )
	return 0;

	// explicitly copy the source together so we can dump it as one string
	size_t source_len = strlen( source );
	char * fused_source = new char[shader_header_len + source_len + 1];
	strcpy( fused_source, shader_header );
	strcpy( fused_source + shader_header_len, source );

transitive-bullshit / billboard_ssao.frag

Created September 30, 2013 21:12

WebGL GLSL SSAO (Screen-Space Ambient Occlusion) fragment shader. Converts the g-buffer to an occlusion buffer which estimates local ambient occlusion at each fragment in screen-space. This SSAO version uses per-fragment depth and normal data to integrate local visibility over a normal-oriented hemisphere in world space by comparing the linear d…

	#define SAMPLE_COUNT {{ sampleCount }}
	#define USE_ACTUAL_NORMALS {{ useActualNormals }}

	uniform sampler2D sGBuffer;
	uniform sampler2D sNoise;

	uniform float uSampleRadius;
	uniform float uIntensity;
	uniform vec2 uNoiseScale;
	uniform vec3 uKernel[SAMPLE_COUNT];

transitive-bullshit / billboard_hbao.frag

Created September 30, 2013 21:10

WebGL GLSL HBAO (Horizon-Based Ambient Occlusion) fragment shader. HBAO is a higher quality approach for computing SSAO (Screen-Space Ambient Occlusion) developed by Nvidia in 2008. Converts the g-buffer to an occlusion buffer which estimates local ambient occlusion at each fragment in screen-space. Specifically, the technique views the depth bu…

	// number of directions to sample in UV space
	#define NUM_SAMPLE_DIRECTIONS {{ numSampleDirections }}

	// number of sample steps when raymarching along a direction
	#define NUM_SAMPLE_STEPS {{ numSampleSteps }}

	#define APPLY_ATTENUATION {{ attenuation }}

	#define USE_ACTUAL_NORMALS {{ useActualNormals }}

transitive-bullshit / billboard_sao.frag

Created September 30, 2013 21:08

WebGL GLSL SAO (Scalable Ambient Obscurance) fragment shader. SAO is a more efficient method for computing SSAO (Screen-Space Ambient Occlusion). Converts the g-buffer to an occlusion buffer which estimates local ambient occlusion at each fragment in screen-space. For details on the technique itself, see: McGuire et al [12] http://graphics.cs.wi…

	// total number of samples at each fragment
	#define NUM_SAMPLES {{ numSamples }}

	#define NUM_SPIRAL_TURNS {{ numSpiralTurns }}

	#define USE_ACTUAL_NORMALS {{ useActualNormals }}

	#define VARIATION {{ variation }}

	uniform sampler2D sGBuffer;

jawa0 / loadTexture.py

Created November 2, 2012 17:39

Use the Python Imaging Library (PIL), and NumPy to read an image into an OpenGL texture

	from OpenGL.GL import *
	import Image
	import numpy

	imname = 'uv-grey.jpg'

	# glTexImage2D expects the first element of the image data to be the bottom-left corner of the image.
	# Subsequent elements go left to right, with subsequent lines going from bottom to top.
	#
	# However, the image data was created with PIL Image tostring and numpy's fromstring, which means we

mbrochh / gist:964057

Last active November 10, 2021 19:08

Fast Forward Your Fork

	# kudos to https://github.com/drewlesueur
	# stolen from here: https://github.com/blog/266-fast-forward-your-fork#comment-11535
	git checkout -b upstream-master
	git remote add upstream git://github.com/documentcloud/underscore.git
	git pull upstream master
	git checkout master // [my master branch]
	git merge upstream-master
	git push origin master

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