It will require a few new variables and functions in Texture <\/em>class.<\/p>\n\n\n\n 1. Start VS, open C:\\CPP\\a997modeler<\/em>\\p_windows\\p_windows.sln<\/em>.<\/p>\n\n\n\n 2. Open Texture.h<\/em> and replace code by:<\/p>\n\n\n <\/p>\n\n\n\n 3. Open Texture.cpp<\/em> and replace code by:<\/p>\n\n\n <\/p>\n\n\n\n Hope the code is readable enough.<\/p>\n\n\n\n Following code renders and saves 3 images with different “blur depths”:<\/p>\n\n\n <\/p>\n\n\n\n 4. Open TheGame.cpp<\/em> and replace TheGame::run()<\/strong><\/em> function by the code above.<\/p>\n\n\n\n Details:<\/p>\n\n\n\n a) Line 13: we are creating 64×64 RGBA buffer.<\/p>\n\n\n\n b) Lines 14-19: filling this buffer out by a simple background (as in previous chapter). Each of 4 channels will look like<\/p>\n\n\n\n Combined channels image:<\/p>\n\n\n\n c) Lines 21-23: generating a texture, render buffer and setting rendering to created render buffer\/texture.<\/p>\n\n\n\n d) Lines 29-49: creating a flat 1×1 square object which we will draw to generated texture.<\/p>\n\n\n\n e) Line 55: For the first image dots(squares) size will be 6×6.<\/p>\n\n\n\n f) Lines 58-72: Rendering these squares in random colors in random coordinates.<\/p>\n\n\n\n g) Line 73: Retrieving resulting image back from GPU:<\/p>\n\n\n\n where each channel looks like<\/p>\n\n\n\n h) Line 74: Blur:<\/p>\n\n\n\n where each channel looks like<\/p>\n\n\n\n i) Line 78: Saving in file.<\/p>\n\n\n\n j) Lines 77 to 126: the same for blur depth 2<\/p>\n\n\n\n and 1<\/p>\n\n\n\n <\/p>\n\n\n\n 5. Build and run. New images are generated and saved in<\/p>\n\n\n\n C:\\CPP\\a997modeler\\p_windows\\Debug\\dt\\out<\/strong><\/em><\/p>\n\n\n\n 6. In Windows File Explorer<\/strong> copy all newly generated files from <\/p>\n\n\n\n C:\\CPP\\a997modeler\\p_windows\\Debug\\dt\\out<\/strong><\/em> <\/p>\n\n\n\n to C:\\CPP\\engine\\dt\\common\\img\\whitenoise<\/em><\/p>\n\n\n\n So, now we have 5 BMP files in this folder.<\/p>\n\n\n\n 7. Ok to delete folder C:\\CPP\\a997modeler\\p_windows\\Debug\\dt<\/strong><\/em> .<\/p>\n\n\n\n These pretty pictures are not so precious by themselves, but their black\/white channels – ARE. We’ll need them soon.<\/p>\n\n\n\n <\/p>\n\n\n\n <\/p>\n","protected":false},"excerpt":{"rendered":" Here I want to render a bit more complicated white noise images. I want bigger dots with a soft transition between them. The task splits in following steps: Generate initial black\/white image (as we did in previous chapter) Generate a GL texture out of it Make it renderable (associate a render buffer with it) Force […]<\/p>\n","protected":false},"author":1,"featured_media":774,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-772","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cross-platform-3d"],"_links":{"self":[{"href":"https:\/\/writingagame.com\/index.php\/wp-json\/wp\/v2\/posts\/772","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/writingagame.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/writingagame.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/writingagame.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/writingagame.com\/index.php\/wp-json\/wp\/v2\/comments?post=772"}],"version-history":[{"count":18,"href":"https:\/\/writingagame.com\/index.php\/wp-json\/wp\/v2\/posts\/772\/revisions"}],"predecessor-version":[{"id":3515,"href":"https:\/\/writingagame.com\/index.php\/wp-json\/wp\/v2\/posts\/772\/revisions\/3515"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/writingagame.com\/index.php\/wp-json\/wp\/v2\/media\/774"}],"wp:attachment":[{"href":"https:\/\/writingagame.com\/index.php\/wp-json\/wp\/v2\/media?parent=772"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/writingagame.com\/index.php\/wp-json\/wp\/v2\/categories?post=772"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/writingagame.com\/index.php\/wp-json\/wp\/v2\/tags?post=772"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n\n\n\n\n #pragma once\n#include <string>\n#include <vector>\n#include "platform.h"\n\nclass Texture\n{\npublic:\n \/\/texture's individual descriptor:\n unsigned int GLid = -1; \/\/ GL texture id\n int size[2] = { 0,0 }; \/\/ image size\n std::string source; \/\/file name\n \/\/if renderable ?\n unsigned int frameBufferId = 0;\n unsigned int depthBufferId = 0;\n \/\/end of descriptor\n\n \/\/static array (vector) of all loaded textures\n static std::vector<Texture*> textures;\n\npublic:\n static int loadTexture(std::string filePath, int glRepeatH = GL_MIRRORED_REPEAT, int glRepeatV = GL_MIRRORED_REPEAT);\n static int findTexture(std::string filePath);\n static int cleanUp();\n static unsigned int getGLid(int texN) { return textures.at(texN)->GLid; };\n\n static int saveBMP(std::string filePath, unsigned char* buff, int w, int h, int bytesPerPixel=4);\n static int saveTGA(std::string filePath, unsigned char* buff, int w, int h, int bytesPerPixel=4);\n\n static int generateTexture(std::string imgID, int w, int h, unsigned char* imgData, int glRepeatH = GL_MIRRORED_REPEAT, int glRepeatV = GL_MIRRORED_REPEAT);\n static int detachRenderBuffer(Texture* pTex);\n static int attachRenderBuffer(int texN, bool zBuffer = false) { return attachRenderBuffer(textures.at(texN), zBuffer); };\n static int attachRenderBuffer(Texture* pTex, bool zBuffer = false);\n static int setRenderToTexture(int texN) { return setRenderToTexture(textures.at(texN)); };\n static int setRenderToTexture(Texture* pTex);\n static int getImageFromTexture(int texN, unsigned char* imgData);\n static int blurRGBA(unsigned char* imgData, int w, int h, int blurLevel);\n};\n\n<\/pre><\/div>\n\n\n
\n\n\n\n\n#include "Texture.h"\n#define STB_IMAGE_IMPLEMENTATION \/\/required by stb_image.h\n#include "stb_image.h"\n#include "platform.h"\n#include "utils.h"\n\n\/\/static array (vector) of all loaded textures\nstd::vector<Texture*> Texture::textures;\n\nint Texture::loadTexture(std::string filePath, int glRepeatH, int glRepeatV) {\n int texN = findTexture(filePath);\n if (texN >= 0)\n return texN;\n \/\/if here - texture wasn't loaded\n \/\/ load an image\n int nrChannels, w, h;\n unsigned char* imgData = stbi_load(filePath.c_str(),\n &w, &h, &nrChannels, 4); \/\/"4"-convert to 4 channels -RGBA\n if (imgData == NULL) {\n mylog("ERROR in Texture::loadTexture loading image %s\\n", filePath.c_str());\n }\n \/\/ generate texture\n generateTexture(filePath, w, h, imgData, glRepeatH, glRepeatV);\n \/\/ release image data\n stbi_image_free(imgData);\n\n return (textures.size() - 1);\n}\nint Texture::findTexture(std::string filePath) {\n int texturesN = textures.size();\n if (texturesN < 1)\n return -1;\n for (int i = 0; i < texturesN; i++) {\n Texture* pTex = textures.at(i);\n if (pTex->source.compare(filePath) == 0)\n return i;\n }\n return -1;\n}\nint Texture::cleanUp() {\n int texturesN = textures.size();\n if (texturesN < 1)\n return -1;\n \/\/detach all textures\n glActiveTexture(GL_TEXTURE0); \/\/ activate the texture unit first before binding texture\n glBindTexture(GL_TEXTURE_2D, 0);\n glActiveTexture(GL_TEXTURE1);\n glBindTexture(GL_TEXTURE_2D, 0);\n glActiveTexture(GL_TEXTURE2);\n glBindTexture(GL_TEXTURE_2D, 0);\n glActiveTexture(GL_TEXTURE3);\n glBindTexture(GL_TEXTURE_2D, 0);\n \/\/release all textures\n for (int i = 0; i < texturesN; i++) {\n Texture* pTex = textures.at(i);\n detachRenderBuffer(pTex);\n glDeleteTextures(1, (GLuint*)&pTex->GLid);\n pTex->GLid = 0;\n delete pTex;\n }\n textures.clear();\n return 1;\n}\nint Texture::saveBMP(std::string filePath, unsigned char* buff, int w, int h, int bytesPerPixel) {\n std::string fullPath = getFullPath(filePath);\n std::string inAppPath = getInAppPath(fullPath);\n makeDirs(inAppPath);\n FILE* outFile;\n myFopen_s(&outFile, fullPath.c_str(), "wb");\n if (outFile == NULL) {\n mylog("ERROR in Texture::saveBMP: Can't create file %s\\n", filePath.c_str());\n return -1;\n }\n struct {\n char chars2skip[2]; \/\/\n \/\/BMP Header\n char bm[2] = { 0x42, 0x4D }; \/\/\t"BM"\n myUint32 fileSize = 0; \/\/ Size of the BMP file, little-endian\n myUint32 unused = 0;\n myUint32 dataOffset = 0; \/\/ Offset where the pixel array (bitmap data) can be found, little-endian\n \/\/DIB Header\n myUint32 dibHeaderSize = 0; \/\/ Number of bytes in the DIB header, little-endian\n myUint32 imgW = 0; \/\/ Width of the bitmap in pixels, little-endian\n myUint32 imgH = 0; \/\/ Height of the bitmap in pixels, little-endian\n char colorPlainsN[2] = { 1,0 };\n char bitsPerPixel[2] = { 32,0 };\n myUint32 compression = 0; \/\/0-BI_RGB\n myUint32 dataSize = 0; \/\/ Size of the raw bitmap data (including padding), little-endian\n myUint32 printResution[2] = { 2835 ,2835 }; \/\/ Print resolution of the image,\n \/\/72 DPI \u00d7 39.3701 inches per metre yields 2834.6472, little-endian\n myUint32 paletteColors = 0; \/\/ Number of colors in the palette\n myUint32 importantColors = 0; \/\/0 means all colors are important\n } bmpHeader;\n int rowSize = w * bytesPerPixel;\n int rowPadding = (4 - rowSize % 4) % 4;\n int rowSizeWithPadding = rowSize + rowPadding;\n int dataSize = rowSizeWithPadding * h;\n int headerSize = sizeof(bmpHeader) - 2; \/\/-chars2skip\n bmpHeader.fileSize = dataSize + headerSize;\n bmpHeader.dataOffset = headerSize;\n bmpHeader.dibHeaderSize = headerSize - 14; \/\/-BMP Header size\n bmpHeader.imgW = w;\n bmpHeader.imgH = h;\n if (bytesPerPixel != 4)\n bmpHeader.bitsPerPixel[0] = bytesPerPixel * 8;\n bmpHeader.dataSize = dataSize;\n fwrite(&bmpHeader.bm, 1, headerSize, outFile);\n \/\/data, from bottom to top\n unsigned char zero[4] = { 0,0,0,0 };\n unsigned char bgra[4];\n for (int y = h - 1; y >= 0; y--) {\n for (int x = 0; x < w; x++) {\n int pixelOffset = y * rowSize + x * 4;\n bgra[0] = buff[pixelOffset + 2];\n bgra[1] = buff[pixelOffset + 1];\n bgra[2] = buff[pixelOffset + 0];\n bgra[3] = buff[pixelOffset + 3];\n fwrite(bgra, 1, bytesPerPixel, outFile);\n }\n if (rowPadding != 0)\n fwrite(zero, 1, rowPadding, outFile);\n }\n fflush(outFile);\n fclose(outFile);\n\n return 1;\n}\n\nint Texture::saveTGA(std::string filePath, unsigned char* buff, int w, int h, int bytesPerPixel) {\n std::string fullPath = getFullPath(filePath);\n std::string inAppPath = getInAppPath(fullPath);\n makeDirs(inAppPath);\n FILE* outFile;\n myFopen_s(&outFile, fullPath.c_str(), "wb");\n if (outFile == NULL) {\n mylog("ERROR in Texture::saveBMP: Can't create file %s\\n", filePath.c_str());\n return -1;\n }\n unsigned char tgaHeader[18] = { 0,0,2,0,0,0,0,0,0,0,0,0, (unsigned char)(w % 256), (unsigned char)(w \/ 256),\n (unsigned char)(h % 256), (unsigned char)(h \/ 256), (unsigned char)(bytesPerPixel * 8), 0x20 };\n fwrite(tgaHeader, 1, 18, outFile);\n \/\/data\n unsigned char bgra[4];\n for (int i = 0; i < w * h; i++) {\n int pixelOffset = i * 4;\n bgra[0] = buff[pixelOffset + 2];\n bgra[1] = buff[pixelOffset + 1];\n bgra[2] = buff[pixelOffset + 0];\n bgra[3] = buff[pixelOffset + 3];\n fwrite(bgra, 1, bytesPerPixel, outFile);\n }\n fflush(outFile);\n fclose(outFile);\n\n return 1;\n}\nint Texture::generateTexture(std::string imgID, int w, int h, unsigned char* imgData, int glRepeatH, int glRepeatV) {\n \/\/glRepeat options: GL_REPEAT, GL_CLAMP_TO_EDGE, GL_MIRRORED_REPEAT\n if (!imgID.empty()) {\n int texN = findTexture(imgID);\n if (texN >= 0)\n return texN;\n }\n \/\/if here - texture wasn't generated\n \/\/create Texture object\n Texture* pTex = new Texture();\n textures.push_back(pTex);\n pTex->size[0] = w;\n pTex->size[1] = h;\n pTex->source.assign(imgID);\n \/\/ generate texture\n glGenTextures(1, (GLuint*)&pTex->GLid);\n glBindTexture(GL_TEXTURE_2D, pTex->GLid);\n \/\/ set the texture wrapping\/filtering options (on the currently bound texture object)\n glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, glRepeatH);\n glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, glRepeatV);\n glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);\/\/ GL_LINEAR); \/\/\n glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);\n \/\/ attach image data (if provided)\n if (imgData != NULL) {\n glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, pTex->size[0], pTex->size[1], 0, GL_RGBA, GL_UNSIGNED_BYTE, imgData);\n glGenerateMipmap(GL_TEXTURE_2D);\n }\n return (textures.size() - 1);\n}\nint Texture::detachRenderBuffer(Texture* pTex) {\n if (pTex->frameBufferId == 0)\n return 0;\n if (pTex->depthBufferId > 0) {\n glDeleteRenderbuffers(1, (GLuint*)&pTex->depthBufferId);\n pTex->depthBufferId = 0;\n }\n glDeleteFramebuffers(1, (GLuint*)&pTex->frameBufferId);\n pTex->frameBufferId = 0;\n return 1;\n}\n\nint Texture::attachRenderBuffer(Texture* pTex, bool zBuffer) {\n if (pTex->frameBufferId > 0)\n return 0; \/\/attached already\n \/\/generate frame buffer\n glGenFramebuffers(1, (GLuint*)&pTex->frameBufferId);\n if (zBuffer) {\n \/\/generate depth buffer\n glGenRenderbuffers(1, (GLuint*)&pTex->depthBufferId);\n \/\/ create render buffer and bind 16-bit depth buffer\n glBindRenderbuffer(GL_RENDERBUFFER, pTex->depthBufferId);\n glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT16, pTex->size[0], pTex->size[1]);\n glBindRenderbuffer(GL_RENDERBUFFER, 0); \/\/release\n }\n return 1;\n}\nint Texture::setRenderToTexture(Texture* pTex) {\n if (pTex->frameBufferId == 0) {\n mylog("ERROR in Texture::setRenderToTexture: %s not renderable", pTex->source.c_str());\n return -1;\n }\n \/\/ Bind the framebuffer\n glBindFramebuffer(GL_FRAMEBUFFER, pTex->frameBufferId);\n \/\/ specify texture as color attachment\n glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, pTex->GLid, 0);\n \/\/ attach render buffer as depth buffer\n if (pTex->depthBufferId > 0) {\n glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, pTex->depthBufferId);\n glClear(GL_DEPTH_BUFFER_BIT);\n }\n \/\/ check status\n int status = glCheckFramebufferStatus(GL_FRAMEBUFFER);\n if (status != GL_FRAMEBUFFER_COMPLETE) {\n std::string str;\n if (status == GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT)\n str.assign("GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT");\n else if (status == GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT)\n str.assign("GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT");\n else if (status == GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE)\n str.assign("GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE");\n else if (status == GL_FRAMEBUFFER_UNSUPPORTED)\n str.assign("GL_FRAMEBUFFER_UNSUPPORTED");\n else\n str.assign("hz");\n mylog("Modeler.setRenderToTextureBind to texture %s failed: %s\\n", pTex->source.c_str(), str.c_str());\n return -1;\n }\n glViewport(0, 0, pTex->size[0], pTex->size[1]);\n return 1;\n}\nint Texture::getImageFromTexture(int texN, unsigned char* imgData) {\n Texture* pTex = textures.at(texN);\n glBindTexture(GL_TEXTURE_2D, pTex->GLid);\n glBindFramebuffer(GL_FRAMEBUFFER, pTex->frameBufferId);\n\n glReadPixels(0, 0, pTex->size[0], pTex->size[1], GL_RGBA, GL_UNSIGNED_BYTE, imgData);\n return 1;\n}\nint Texture::blurRGBA(unsigned char* imgData, int w0, int h0, int blurLevel) {\n unsigned char* imgTemp = new unsigned char[w0 * h0 * 4];\n int w00 = blurLevel * 2 + 1;\n for (int y0 = 0; y0 < h0; y0++) {\n int y1 = y0 - blurLevel;\n int h1 = w00;\n if (y1 < 0) {\n int d = -y1;\n y1 += d;\n h1 -= d;\n }\n else if (y1 > h0 - w00) {\n int d = y1 - (h0 - w00);\n h1 -= d;\n }\n for (int x0 = 0; x0 < w0; x0++) {\n int x1 = x0 - blurLevel;\n int w1 = w00;\n if (x1 < 0) {\n int d = -x1;\n x1 += d;\n w1 -= d;\n }\n else if (x1 > w0 - w00) {\n int d = x1 - (w0 - w00);\n w1 -= d;\n }\n int sum[4] = { 0,0,0,0 };\n for (int y = y1; y < y1 + h1; y++) {\n for (int x = x1; x < x1 + w1; x++) {\n int idx = (y * w0 + x) * 4;\n for (int ch = 0; ch < 4; ch++)\n sum[ch] += imgData[idx + ch];\n }\n }\n int n = w1 * h1;\n int idx = (y0 * w0 + x0) * 4;\n for (int ch = 0; ch < 4; ch++)\n imgTemp[idx + ch] = (unsigned char)(sum[ch] \/ n);\n }\n }\n memcpy(imgData, imgTemp, w0 * h0 * 4);\n delete[] imgTemp;\n return 1;\n}\n\n<\/pre><\/div>\n\n\n
\n\n\n\n\nint TheGame::run() {\n \/*\n getReady();\n while (!bExitGame) {\n drawFrame();\n }\n cleanUp();\n *\/\n Shader::loadShaders();\n\n int wh[2] = { 64,64 };\n int bytesPerPixel = 4;\n unsigned char* imgData = new unsigned char[wh[1] * wh[0] * 4];\n for (int y = 0; y < wh[1]; y++)\n for (int x = 0; x < wh[0]; x++) {\n int idx = (y * wh[1] + x) * bytesPerPixel;\n for (int i = 0; i < 4; i++)\n imgData[idx + i] = getRandom(0, 1) * 255;\n }\n \/\/background generated, generate texture:\n int texN = Texture::generateTexture("", wh[0], wh[1], imgData);\n Texture::attachRenderBuffer(texN);\n Texture::setRenderToTexture(texN);\n\n mat4x4 mProjection, mMVP;\n mat4x4_ortho(mProjection, -wh[0] \/ 2, wh[0] \/ 2, -wh[1] \/ 2, wh[1] \/ 2, 1.f, -1.f);\n unsigned char RGBA[4];\n\n \/\/create a simple 1x1 ucolor square\n GameSubj* pSquare = new GameSubj();\n gameSubjs.push_back(pSquare);\n ModelBuilder* pMB = new ModelBuilder();\n pMB->useSubjN(gameSubjs.size() - 1);\n \/\/define VirtualShape\n VirtualShape vs;\n vs.setShapeType("box");\n v3set(vs.whl, 1, 1, 0);\n Material mt;\n \/\/define material - flat red\n mt.shaderN = Shader::spN_flat_ucolor;\n mt.primitiveType = GL_TRIANGLES;\n mt.uColor.setRGBA(255, 0, 0, 255); \/\/red\n pMB->useMaterial(&mt);\n pMB->buildBoxFace(pMB, "front", &vs);\n pMB->buildDrawJobs(gameSubjs);\n delete pMB;\n \/\/copy mt to pAltMaterial\n pSquare->pAltMaterial = new Material(mt);\n \/\/--end of pSquare\n DrawJob* pDJ = DrawJob::drawJobs.back();\n\n \/\/-------------blurLevel 3\n int blurLevel = 3;\n std::string fileName = "wn64_blur3";\n int dotSize = blurLevel * 2;\n v3set(pSquare->scale, dotSize, dotSize, 1);\n\n for (int i = 0; i < 500; i++) {\n pSquare->ownCoords.pos[0] = getRandom(-wh[0] \/ 2, wh[0] \/ 2);\n pSquare->ownCoords.pos[1] = getRandom(-wh[1] \/ 2, wh[1] \/ 2);\n pSquare->ownCoords.setDegrees(0,0,getRandom(0,90));\n for (int ch = 0; ch < 4; ch++)\n RGBA[ch] = (unsigned char)(getRandom(0, 1) * 255);\n pSquare->pAltMaterial->uColor.setRGBA(RGBA);\n\n \/\/prepare subject for rendering\n pSquare->buildModelMatrix(pSquare);\n \/\/build MVP matrix for given subject\n mat4x4_mul(mMVP, mProjection, pSquare->ownModelMatrix);\n \/\/render subject\n pDJ->execute((float*)mMVP, NULL, NULL, NULL, pSquare->pAltMaterial);\n }\n Texture::getImageFromTexture(texN, imgData);\n Texture::blurRGBA(imgData, wh[0], wh[1], blurLevel);\n\n Texture::saveBMP("\/dt\/out\/" + fileName + ".bmp", imgData, wh[0], wh[1]);\n \/\/-------------blurLevel 2\n blurLevel = 2;\n fileName = "wn64_blur2";\n dotSize = blurLevel * 2;\n v3set(pSquare->scale, dotSize, dotSize, 1);\n\n for (int i = 0; i < 500; i++) {\n pSquare->ownCoords.pos[0] = getRandom(-wh[0] \/ 2, wh[0] \/ 2);\n pSquare->ownCoords.pos[1] = getRandom(-wh[1] \/ 2, wh[1] \/ 2);\n pSquare->ownCoords.setDegrees(0, 0, getRandom(0, 90));\n for (int ch = 0; ch < 4; ch++)\n RGBA[ch] = (unsigned char)(getRandom(0, 1) * 255);\n pSquare->pAltMaterial->uColor.setRGBA(RGBA);\n\n \/\/prepare subject for rendering\n pSquare->buildModelMatrix(pSquare);\n \/\/build MVP matrix for given subject\n mat4x4_mul(mMVP, mProjection, pSquare->ownModelMatrix);\n \/\/render subject\n pDJ->execute((float*)mMVP, NULL, NULL, NULL, pSquare->pAltMaterial);\n }\n Texture::getImageFromTexture(texN, imgData);\n Texture::blurRGBA(imgData, wh[0], wh[1], blurLevel);\n\n Texture::saveBMP("\/dt\/out\/" + fileName + ".bmp", imgData, wh[0], wh[1]);\n \/\/-------------blurLevel 1\n blurLevel = 1;\n fileName = "wn64_blur1";\n dotSize = blurLevel * 2;\n v3set(pSquare->scale, dotSize, dotSize, 1);\n\n for (int i = 0; i < 500; i++) {\n pSquare->ownCoords.pos[0] = getRandom(-wh[0] \/ 2, wh[0] \/ 2);\n pSquare->ownCoords.pos[1] = getRandom(-wh[1] \/ 2, wh[1] \/ 2);\n pSquare->ownCoords.setDegrees(0, 0, getRandom(0, 90));\n for (int ch = 0; ch < 4; ch++)\n RGBA[ch] = (unsigned char)(getRandom(0, 1) * 255);\n pSquare->pAltMaterial->uColor.setRGBA(RGBA);\n\n \/\/prepare subject for rendering\n pSquare->buildModelMatrix(pSquare);\n \/\/build MVP matrix for given subject\n mat4x4_mul(mMVP, mProjection, pSquare->ownModelMatrix);\n \/\/render subject\n pDJ->execute((float*)mMVP, NULL, NULL, NULL, pSquare->pAltMaterial);\n }\n Texture::getImageFromTexture(texN, imgData);\n Texture::blurRGBA(imgData, wh[0], wh[1], blurLevel);\n\n Texture::saveBMP("\/dt\/out\/" + fileName + ".bmp", imgData, wh[0], wh[1]);\n\n delete[] imgData;\n mylog("Ready\\n");\n\n return 1;\n}\n\n<\/pre><\/div>\n\n\n![](\"https:\/\/writingagame.com\/img\/b01\/c26\/01.jpg\")
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