http://www.reedbeta.com/blog/2013/01/12/quick-and-easy-gpu-random-numbers-in-d3d11/
https://github.com/openglsuperbible/sb6code/blob/master/bin/media/shaders/ssao/ssao.fs.glsl http://math.stackexchange.com/questions/337782/pseudo-random-number-generation-on-the-gpu
http://www.trentreed.net/blog/screen-space-ambient-occlusion/
| #include <ole2.h> | |
| #include <ShObjIdl.h> | |
| #include <vector> | |
| #include <string> | |
| class CDropTarget : public IDropTarget | |
| { | |
| public: | |
| CDropTarget() {}; |
| /** | |
| markdeep.js | |
| Version 0.12 | |
| Copyright 2015-2016, Morgan McGuire, http://casual-effects.com | |
| All rights reserved. | |
| ------------------------------------------------------------- | |
| See http://casual-effects.com/markdeep for documentation on how to |
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0" name="viewport" /> | |
| <meta charset=utf-8> | |
| </head> | |
| <body> | |
| <canvas width=2048 height=2048 style="width: 800px; height: 800px"></canvas> | |
| </body> | |
| <script language="javascript" src="https://npmcdn.com/regl/dist/regl.js"></script> |
| // CC0 | |
| #define IMGUI_DEFINE_MATH_OPERATORS | |
| #include <imgui_internal.h> | |
| #define isdigit(c) (c >= '0' && c <= '9') | |
| namespace ImGui | |
| { | |
| float strToFloat (const char *s) // atof from minilibc |
| // based on shader by Nikos Papadopoulos, 4rknova / 2013 (https://www.shadertoy.com/view/llGSzw) | |
| // Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. | |
| #define ENABLE_LIGHTING | |
| #define ENABLE_SPECULAR | |
| #define OFFSET_X 1 | |
| #define OFFSET_Y 1 | |
| #define DEPTH 5.5 |
| std::ofstream file ("Mesh.obj"); | |
| // Every vertex is a line in output file: | |
| // v pos_x pos_y pos_z | |
| for (int i = 0; i < mesh->numVertices(); ++i) { | |
| file << "v " << mesh->vertices()[i].x() << " " | |
| << mesh->vertices()[i].y() << " " | |
| << mesh->vertices()[i].z() << std::endl; | |
| } |
| #include <ImGuiHandler.hpp> | |
| #include <imgui/imgui.h> | |
| #include <iostream> | |
| using namespace sf; | |
| // This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure) | |
| // If text or lines are blurry when integrating ImGui in your engine: |
| vec4 StepJFA (in vec2 fragCoord, in float level) | |
| { | |
| level = clamp(level-1.0, 0.0, c_maxSteps); | |
| float stepwidth = floor(exp2(c_maxSteps - level)+0.5); | |
| float bestDistance = 9999.0; | |
| vec2 bestCoord = vec2(0.0); | |
| vec3 bestColor = vec3(0.0); | |
| for (int y = -1; y <= 1; ++y) { |
| float const depthGL = read_imagef (depthImage, depthSampler, (int2) (x, y)).x; // in range [0,1] | |
| float2 const pixel = (float2) ( (x + 0.5f) / (float) imageSizeX, | |
| (y + 0.5f) / (float) imageSizeY); // in range [0,1] | |
| float4 point_NDC = (float4) ( 2.0f * pixel.x - 1.0f, // in range [-1,1] | |
| 2.0f * pixel.y - 1.0f, // in range [-1,1] | |
| 2.0f * depthGL - 1.0f, // in range [-1,1] | |
| 1.0f); |