diff options
| author | Kelly Rauchenberger <fefferburbia@gmail.com> | 2018-05-17 15:55:37 -0400 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-05-17 15:55:37 -0400 |
| commit | 90aadf3844386824140a20d7fbb847bc16009a94 (patch) | |
| tree | 6f83fce90e71abb22b1a8f3e09c79963b2a34d5d /src/renderer.cpp | |
| parent | bc63fa57ced1c7329f7fdcfd168eaf7e290158bc (diff) | |
| parent | 86f0106d0523825549f1e74b835688c78a10cf6c (diff) | |
| download | therapy-90aadf3844386824140a20d7fbb847bc16009a94.tar.gz therapy-90aadf3844386824140a20d7fbb847bc16009a94.tar.bz2 therapy-90aadf3844386824140a20d7fbb847bc16009a94.zip | |
Merge pull request #7 from hatkirby/es-rewrite
The ECS rewrite exceeds the original branch in functionality, so it is time to merge it in.
Diffstat (limited to 'src/renderer.cpp')
| -rw-r--r-- | src/renderer.cpp | 861 |
1 files changed, 0 insertions, 861 deletions
| diff --git a/src/renderer.cpp b/src/renderer.cpp deleted file mode 100644 index ffe9d47..0000000 --- a/src/renderer.cpp +++ /dev/null | |||
| @@ -1,861 +0,0 @@ | |||
| 1 | #include "renderer.h" | ||
| 2 | #include <string> | ||
| 3 | #include <fstream> | ||
| 4 | #include <vector> | ||
| 5 | #include <cstdio> | ||
| 6 | #include <cstring> | ||
| 7 | #include <cstdlib> | ||
| 8 | #include <glm/glm.hpp> | ||
| 9 | #include <glm/gtc/matrix_transform.hpp> | ||
| 10 | #include "consts.h" | ||
| 11 | |||
| 12 | // include stb_image | ||
| 13 | #define STB_IMAGE_IMPLEMENTATION | ||
| 14 | #define STBI_ONLY_PNG | ||
| 15 | #define STBI_ONLY_BMP | ||
| 16 | #include "stb_image.h" | ||
| 17 | |||
| 18 | static bool rendererInitialized = false; | ||
| 19 | |||
| 20 | static GLFWwindow* window; | ||
| 21 | |||
| 22 | static GLuint generic_framebuffer; // The framebuffer | ||
| 23 | static GLuint bloom_framebuffer; | ||
| 24 | static GLuint bloom_depthbuffer; | ||
| 25 | static int buffer_width = 1024; | ||
| 26 | static int buffer_height = 768; | ||
| 27 | |||
| 28 | static GLuint ntscShader; // The NTSC shader | ||
| 29 | static GLuint finalShader; // The passthrough shader | ||
| 30 | static GLuint blitShader; // The blitting shader | ||
| 31 | static GLuint fillShader; // The fill shader | ||
| 32 | static GLuint bloom1Shader; | ||
| 33 | static GLuint bloom2Shader; | ||
| 34 | |||
| 35 | // The buffers for the NTSC rendering process | ||
| 36 | static GLuint renderedTex1; | ||
| 37 | static GLuint renderedTex2; | ||
| 38 | static GLuint renderedTexBufs[2]; | ||
| 39 | static int curBuf; | ||
| 40 | static GLuint artifactsTex; | ||
| 41 | static GLuint scanlinesTex; | ||
| 42 | static GLuint preBloomTex; | ||
| 43 | static GLuint bloomPassTex1; | ||
| 44 | static GLuint bloomPassTex2; | ||
| 45 | |||
| 46 | // The VAO | ||
| 47 | static GLuint VertexArrayID; | ||
| 48 | |||
| 49 | // A plane that fills the renderbuffer | ||
| 50 | static GLuint quad_vertexbuffer; | ||
| 51 | |||
| 52 | // Buffers for the mesh | ||
| 53 | static GLuint mesh_vertexbuffer; | ||
| 54 | static GLuint mesh_uvbuffer; | ||
| 55 | static GLuint mesh_normalbuffer; | ||
| 56 | static int mesh_numvertices; | ||
| 57 | |||
| 58 | GLuint LoadShaders(const char* vertex_file_path, const char* fragment_file_path) | ||
| 59 | { | ||
| 60 | // Create the shaders | ||
| 61 | GLuint VertexShaderID = glCreateShader(GL_VERTEX_SHADER); | ||
| 62 | GLuint FragmentShaderID = glCreateShader(GL_FRAGMENT_SHADER); | ||
| 63 | |||
| 64 | // Read the Vertex Shader code from the file | ||
| 65 | std::string VertexShaderCode; | ||
| 66 | std::ifstream VertexShaderStream(vertex_file_path, std::ios::in); | ||
| 67 | if(VertexShaderStream.is_open()) | ||
| 68 | { | ||
| 69 | std::string Line = ""; | ||
| 70 | while(getline(VertexShaderStream, Line)) | ||
| 71 | VertexShaderCode += "\n" + Line; | ||
| 72 | VertexShaderStream.close(); | ||
| 73 | } | ||
| 74 | |||
| 75 | // Read the Fragment Shader code from the file | ||
| 76 | std::string FragmentShaderCode; | ||
| 77 | std::ifstream FragmentShaderStream(fragment_file_path, std::ios::in); | ||
| 78 | if(FragmentShaderStream.is_open()){ | ||
| 79 | std::string Line = ""; | ||
| 80 | while(getline(FragmentShaderStream, Line)) | ||
| 81 | FragmentShaderCode += "\n" + Line; | ||
| 82 | FragmentShaderStream.close(); | ||
| 83 | } | ||
| 84 | |||
| 85 | GLint Result = GL_FALSE; | ||
| 86 | int InfoLogLength; | ||
| 87 | |||
| 88 | // Compile Vertex Shader | ||
| 89 | printf("Compiling shader : %s\n", vertex_file_path); | ||
| 90 | char const * VertexSourcePointer = VertexShaderCode.c_str(); | ||
| 91 | glShaderSource(VertexShaderID, 1, &VertexSourcePointer , nullptr); | ||
| 92 | glCompileShader(VertexShaderID); | ||
| 93 | |||
| 94 | // Check Vertex Shader | ||
| 95 | glGetShaderiv(VertexShaderID, GL_COMPILE_STATUS, &Result); | ||
| 96 | glGetShaderiv(VertexShaderID, GL_INFO_LOG_LENGTH, &InfoLogLength); | ||
| 97 | std::vector<char> VertexShaderErrorMessage(InfoLogLength); | ||
| 98 | glGetShaderInfoLog(VertexShaderID, InfoLogLength, nullptr, &VertexShaderErrorMessage[0]); | ||
| 99 | fprintf(stdout, "%s\n", &VertexShaderErrorMessage[0]); | ||
| 100 | |||
| 101 | // Compile Fragment Shader | ||
| 102 | printf("Compiling shader : %s\n", fragment_file_path); | ||
| 103 | char const * FragmentSourcePointer = FragmentShaderCode.c_str(); | ||
| 104 | glShaderSource(FragmentShaderID, 1, &FragmentSourcePointer , nullptr); | ||
| 105 | glCompileShader(FragmentShaderID); | ||
| 106 | |||
| 107 | // Check Fragment Shader | ||
| 108 | glGetShaderiv(FragmentShaderID, GL_COMPILE_STATUS, &Result); | ||
| 109 | glGetShaderiv(FragmentShaderID, GL_INFO_LOG_LENGTH, &InfoLogLength); | ||
| 110 | std::vector<char> FragmentShaderErrorMessage(InfoLogLength); | ||
| 111 | glGetShaderInfoLog(FragmentShaderID, InfoLogLength, nullptr, &FragmentShaderErrorMessage[0]); | ||
| 112 | fprintf(stdout, "%s\n", &FragmentShaderErrorMessage[0]); | ||
| 113 | |||
| 114 | // Link the program | ||
| 115 | fprintf(stdout, "Linking program\n"); | ||
| 116 | GLuint ProgramID = glCreateProgram(); | ||
| 117 | glAttachShader(ProgramID, VertexShaderID); | ||
| 118 | glAttachShader(ProgramID, FragmentShaderID); | ||
| 119 | glLinkProgram(ProgramID); | ||
| 120 | |||
| 121 | // Check the program | ||
| 122 | glGetProgramiv(ProgramID, GL_LINK_STATUS, &Result); | ||
| 123 | glGetProgramiv(ProgramID, GL_INFO_LOG_LENGTH, &InfoLogLength); | ||
| 124 | std::vector<char> ProgramErrorMessage( glm::max(InfoLogLength, int(1)) ); | ||
| 125 | glGetProgramInfoLog(ProgramID, InfoLogLength, nullptr, &ProgramErrorMessage[0]); | ||
| 126 | fprintf(stdout, "%s\n", &ProgramErrorMessage[0]); | ||
| 127 | |||
| 128 | glDeleteShader(VertexShaderID); | ||
| 129 | glDeleteShader(FragmentShaderID); | ||
| 130 | |||
| 131 | return ProgramID; | ||
| 132 | } | ||
| 133 | |||
| 134 | void flipImageData(unsigned char* data, int width, int height, int comps) | ||
| 135 | { | ||
| 136 | unsigned char* data_copy = (unsigned char*) malloc(width*height*comps*sizeof(unsigned char)); | ||
| 137 | memcpy(data_copy, data, width*height*comps); | ||
| 138 | |||
| 139 | int row_size = width * comps; | ||
| 140 | |||
| 141 | for (int i=0;i<height;i++) | ||
| 142 | { | ||
| 143 | memcpy(data + (row_size*i), data_copy + (row_size*(height-i-1)), row_size); | ||
| 144 | } | ||
| 145 | |||
| 146 | free(data_copy); | ||
| 147 | } | ||
| 148 | |||
| 149 | void loadMesh(const char* filename, std::vector<glm::vec3>& out_vertices, std::vector<glm::vec2>& out_uvs, std::vector<glm::vec3>& out_normals) | ||
| 150 | { | ||
| 151 | FILE* file = fopen(filename, "r"); | ||
| 152 | if (file == nullptr) | ||
| 153 | { | ||
| 154 | fprintf(stderr, "Could not open mesh file %s\n", filename); | ||
| 155 | exit(1); | ||
| 156 | } | ||
| 157 | |||
| 158 | std::vector<glm::vec3> temp_vertices; | ||
| 159 | std::vector<glm::vec2> temp_uvs; | ||
| 160 | std::vector<glm::vec3> temp_normals; | ||
| 161 | |||
| 162 | for (;;) | ||
| 163 | { | ||
| 164 | char lineHeader[256]; | ||
| 165 | int res = fscanf(file, "%s", lineHeader); | ||
| 166 | if (res == EOF) | ||
| 167 | { | ||
| 168 | break; | ||
| 169 | } | ||
| 170 | |||
| 171 | if (!strncmp(lineHeader, "v", 2)) | ||
| 172 | { | ||
| 173 | glm::vec3 vertex; | ||
| 174 | fscanf(file, "%f %f %f\n", &vertex.x,&vertex.y,&vertex.z); | ||
| 175 | temp_vertices.push_back(vertex); | ||
| 176 | } else if (!strncmp(lineHeader, "vt", 3)) | ||
| 177 | { | ||
| 178 | glm::vec2 uv; | ||
| 179 | fscanf(file, "%f %f\n", &uv.x, &uv.y); | ||
| 180 | temp_uvs.push_back(uv); | ||
| 181 | } else if (!strncmp(lineHeader, "vn", 3)) | ||
| 182 | { | ||
| 183 | glm::vec3 normal; | ||
| 184 | fscanf(file, "%f %f %f\n", &normal.x, &normal.y, &normal.z); | ||
| 185 | temp_normals.push_back(normal); | ||
| 186 | } else if (!strncmp(lineHeader, "f", 2)) | ||
| 187 | { | ||
| 188 | int vertexIDs[3], uvIDs[3], normalIDs[3]; | ||
| 189 | fscanf(file, "%d/%d/%d %d/%d/%d %d/%d/%d\n", &vertexIDs[0], &uvIDs[0], &normalIDs[0], &vertexIDs[1], &uvIDs[1], &normalIDs[1], &vertexIDs[2], &uvIDs[2], &normalIDs[2]); | ||
| 190 | |||
| 191 | for (int i=0; i<3; i++) | ||
| 192 | { | ||
| 193 | out_vertices.push_back(temp_vertices[vertexIDs[i] - 1]); | ||
| 194 | out_uvs.push_back(temp_uvs[uvIDs[i] - 1]); | ||
| 195 | out_normals.push_back(temp_normals[normalIDs[i] - 1]); | ||
| 196 | } | ||
| 197 | } | ||
| 198 | } | ||
| 199 | } | ||
| 200 | |||
| 201 | void setFramebufferSize(GLFWwindow* w, int width, int height) | ||
| 202 | { | ||
| 203 | buffer_width = width; | ||
| 204 | buffer_height = height; | ||
| 205 | |||
| 206 | glDeleteFramebuffers(1, &bloom_framebuffer); | ||
| 207 | glDeleteRenderbuffers(1, &bloom_depthbuffer); | ||
| 208 | |||
| 209 | glGenFramebuffers(1, &bloom_framebuffer); | ||
| 210 | glBindFramebuffer(GL_FRAMEBUFFER, bloom_framebuffer); | ||
| 211 | GLenum DrawBuffers[1] = {GL_COLOR_ATTACHMENT1}; | ||
| 212 | glDrawBuffers(1, DrawBuffers); | ||
| 213 | |||
| 214 | glGenRenderbuffers(1, &bloom_depthbuffer); | ||
| 215 | glBindRenderbuffer(GL_RENDERBUFFER, bloom_depthbuffer); | ||
| 216 | glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, width, height); | ||
| 217 | glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, bloom_depthbuffer); | ||
| 218 | |||
| 219 | glDeleteTextures(1, &preBloomTex); | ||
| 220 | glDeleteTextures(1, &bloomPassTex1); | ||
| 221 | glDeleteTextures(1, &bloomPassTex2); | ||
| 222 | |||
| 223 | glGenTextures(1, &preBloomTex); | ||
| 224 | glBindTexture(GL_TEXTURE_2D, preBloomTex); | ||
| 225 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); | ||
| 226 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); | ||
| 227 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); | ||
| 228 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); | ||
| 229 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); | ||
| 230 | |||
| 231 | glGenTextures(1, &bloomPassTex1); | ||
| 232 | glBindTexture(GL_TEXTURE_2D, bloomPassTex1); | ||
| 233 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width/4, height/4, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); | ||
| 234 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); | ||
| 235 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); | ||
| 236 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); | ||
| 237 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); | ||
| 238 | |||
| 239 | glGenTextures(1, &bloomPassTex2); | ||
| 240 | glBindTexture(GL_TEXTURE_2D, bloomPassTex2); | ||
| 241 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width/4, height/4, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); | ||
| 242 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); | ||
| 243 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); | ||
| 244 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); | ||
| 245 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); | ||
| 246 | } | ||
| 247 | |||
| 248 | GLFWwindow* initRenderer() | ||
| 249 | { | ||
| 250 | if (rendererInitialized) | ||
| 251 | { | ||
| 252 | fprintf(stderr, "Renderer already initialized\n"); | ||
| 253 | exit(-1); | ||
| 254 | } | ||
| 255 | |||
| 256 | // Initialize GLFW | ||
| 257 | if (!glfwInit()) | ||
| 258 | { | ||
| 259 | fprintf(stderr, "Failed to initialize GLFW\n"); | ||
| 260 | exit(-1); | ||
| 261 | } | ||
| 262 | |||
| 263 | glfwWindowHint(GLFW_SAMPLES, 4); // 4x antialiasing | ||
| 264 | glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3); // We want version 3.3 | ||
| 265 | glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3); | ||
| 266 | glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE); // Mac requires this | ||
| 267 | glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE); | ||
| 268 | |||
| 269 | // Create a window | ||
| 270 | window = glfwCreateWindow(1024, 768, "Aromatherapy", nullptr, nullptr); | ||
| 271 | if (window == nullptr) | ||
| 272 | { | ||
| 273 | fprintf(stderr, "Failed to open GLFW window\n"); | ||
| 274 | glfwTerminate(); | ||
| 275 | exit(-1); | ||
| 276 | } | ||
| 277 | |||
| 278 | glfwMakeContextCurrent(window); | ||
| 279 | glewExperimental = true; // Needed in core profile | ||
| 280 | if (glewInit() != GLEW_OK) | ||
| 281 | { | ||
| 282 | fprintf(stderr, "Failed to initialize GLEW\n"); | ||
| 283 | exit(-1); | ||
| 284 | } | ||
| 285 | |||
| 286 | glfwSetFramebufferSizeCallback(window, &setFramebufferSize); | ||
| 287 | |||
| 288 | // Set up vertex array object | ||
| 289 | glGenVertexArrays(1, &VertexArrayID); | ||
| 290 | glBindVertexArray(VertexArrayID); | ||
| 291 | |||
| 292 | // Enable depth testing | ||
| 293 | glEnable(GL_DEPTH_TEST); | ||
| 294 | glDepthFunc(GL_LESS); | ||
| 295 | |||
| 296 | // Enable blending | ||
| 297 | glEnable(GL_BLEND); | ||
| 298 | glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); | ||
| 299 | |||
| 300 | // Set up the framebuffer | ||
| 301 | glGenFramebuffers(1, &generic_framebuffer); | ||
| 302 | glBindFramebuffer(GL_FRAMEBUFFER, generic_framebuffer); | ||
| 303 | GLenum DrawBuffers[1] = {GL_COLOR_ATTACHMENT0}; | ||
| 304 | glDrawBuffers(1, DrawBuffers); | ||
| 305 | |||
| 306 | glGenFramebuffers(1, &bloom_framebuffer); | ||
| 307 | glBindFramebuffer(GL_FRAMEBUFFER, bloom_framebuffer); | ||
| 308 | GLenum DrawBuffers2[1] = {GL_COLOR_ATTACHMENT1}; | ||
| 309 | glDrawBuffers(1, DrawBuffers2); | ||
| 310 | |||
| 311 | glGenRenderbuffers(1, &bloom_depthbuffer); | ||
| 312 | glBindRenderbuffer(GL_RENDERBUFFER, bloom_depthbuffer); | ||
| 313 | glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, 1024, 768); | ||
| 314 | glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, bloom_depthbuffer); | ||
| 315 | |||
| 316 | // Set up the NTSC rendering buffers | ||
| 317 | glGenTextures(1, &renderedTex1); | ||
| 318 | glBindTexture(GL_TEXTURE_2D, renderedTex1); | ||
| 319 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, GAME_WIDTH, GAME_HEIGHT, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); | ||
| 320 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); | ||
| 321 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); | ||
| 322 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); | ||
| 323 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); | ||
| 324 | renderedTexBufs[0] = renderedTex1; | ||
| 325 | |||
| 326 | glGenTextures(1, &renderedTex2); | ||
| 327 | glBindTexture(GL_TEXTURE_2D, renderedTex2); | ||
| 328 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, GAME_WIDTH, GAME_HEIGHT, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); | ||
| 329 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); | ||
| 330 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); | ||
| 331 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); | ||
| 332 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); | ||
| 333 | renderedTexBufs[1] = renderedTex2; | ||
| 334 | |||
| 335 | // Set up bloom rendering buffers | ||
| 336 | glGenTextures(1, &preBloomTex); | ||
| 337 | glBindTexture(GL_TEXTURE_2D, preBloomTex); | ||
| 338 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1024, 768, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); | ||
| 339 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); | ||
| 340 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); | ||
| 341 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); | ||
| 342 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); | ||
| 343 | |||
| 344 | glGenTextures(1, &bloomPassTex1); | ||
| 345 | glBindTexture(GL_TEXTURE_2D, bloomPassTex1); | ||
| 346 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1024/4, 768/4, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); | ||
| 347 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); | ||
| 348 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); | ||
| 349 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); | ||
| 350 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); | ||
| 351 | |||
| 352 | glGenTextures(1, &bloomPassTex2); | ||
| 353 | glBindTexture(GL_TEXTURE_2D, bloomPassTex2); | ||
| 354 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1024/4, 768/4, 0, GL_RGB, GL_UNSIGNED_BYTE, 0); | ||
| 355 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); | ||
| 356 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); | ||
| 357 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); | ||
| 358 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); | ||
| 359 | |||
| 360 | curBuf = 0; | ||
| 361 | |||
| 362 | // Load the mesh! | ||
| 363 | std::vector<glm::vec3> mesh_vertices; | ||
| 364 | std::vector<glm::vec2> mesh_uvs; | ||
| 365 | std::vector<glm::vec3> mesh_normals; | ||
| 366 | loadMesh("res/monitor-old.obj", mesh_vertices, mesh_uvs, mesh_normals); | ||
| 367 | |||
| 368 | mesh_numvertices = mesh_vertices.size(); | ||
| 369 | |||
| 370 | glGenBuffers(1, &mesh_vertexbuffer); | ||
| 371 | glBindBuffer(GL_ARRAY_BUFFER, mesh_vertexbuffer); | ||
| 372 | glBufferData(GL_ARRAY_BUFFER, mesh_vertices.size() * sizeof(glm::vec3), &mesh_vertices[0], GL_STATIC_DRAW); | ||
| 373 | |||
| 374 | glGenBuffers(1, &mesh_uvbuffer); | ||
| 375 | glBindBuffer(GL_ARRAY_BUFFER, mesh_uvbuffer); | ||
| 376 | glBufferData(GL_ARRAY_BUFFER, mesh_uvs.size() * sizeof(glm::vec3), &mesh_uvs[0], GL_STATIC_DRAW); | ||
| 377 | |||
| 378 | glGenBuffers(1, &mesh_normalbuffer); | ||
| 379 | glBindBuffer(GL_ARRAY_BUFFER, mesh_normalbuffer); | ||
| 380 | glBufferData(GL_ARRAY_BUFFER, mesh_normals.size() * sizeof(glm::vec3), &mesh_normals[0], GL_STATIC_DRAW); | ||
| 381 | |||
| 382 | // Load the vertices of a flat surface | ||
| 383 | GLfloat g_quad_vertex_buffer_data[] = { | ||
| 384 | -1.0f, -1.0f, 0.0f, | ||
| 385 | 1.0f, -1.0f, 0.0f, | ||
| 386 | -1.0f, 1.0f, 0.0f, | ||
| 387 | -1.0f, 1.0f, 0.0f, | ||
| 388 | 1.0f, -1.0f, 0.0f, | ||
| 389 | 1.0f, 1.0f, 0.0f, | ||
| 390 | }; | ||
| 391 | |||
| 392 | glGenBuffers(1, &quad_vertexbuffer); | ||
| 393 | glBindBuffer(GL_ARRAY_BUFFER, quad_vertexbuffer); | ||
| 394 | glBufferData(GL_ARRAY_BUFFER, sizeof(g_quad_vertex_buffer_data), g_quad_vertex_buffer_data, GL_STATIC_DRAW); | ||
| 395 | |||
| 396 | glGenTextures(1, &artifactsTex); | ||
| 397 | glBindTexture(GL_TEXTURE_2D, artifactsTex); | ||
| 398 | int atdw, atdh; | ||
| 399 | unsigned char* artifactsTex_data = stbi_load("res/artifacts.bmp", &atdw, &atdh, 0, 3); | ||
| 400 | flipImageData(artifactsTex_data, atdw, atdh, 3); | ||
| 401 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, atdw, atdh, 0, GL_RGB, GL_UNSIGNED_BYTE, artifactsTex_data); | ||
| 402 | stbi_image_free(artifactsTex_data); | ||
| 403 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); | ||
| 404 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST); | ||
| 405 | glGenerateMipmap(GL_TEXTURE_2D); | ||
| 406 | |||
| 407 | glGenTextures(1, &scanlinesTex); | ||
| 408 | glBindTexture(GL_TEXTURE_2D, scanlinesTex); | ||
| 409 | int stdw, stdh; | ||
| 410 | unsigned char* scanlinesTex_data = stbi_load("res/scanlines_333.bmp", &stdw, &stdh, 0, 3); | ||
| 411 | flipImageData(scanlinesTex_data, stdw, stdh, 3); | ||
| 412 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, atdw, atdh, 0, GL_RGB, GL_UNSIGNED_BYTE, scanlinesTex_data); | ||
| 413 | stbi_image_free(scanlinesTex_data); | ||
| 414 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); | ||
| 415 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST); | ||
| 416 | glGenerateMipmap(GL_TEXTURE_2D); | ||
| 417 | |||
| 418 | // Load the shaders | ||
| 419 | ntscShader = LoadShaders("shaders/ntsc.vertex", "shaders/ntsc.fragment"); | ||
| 420 | finalShader = LoadShaders("shaders/final.vertex", "shaders/final.fragment"); | ||
| 421 | blitShader = LoadShaders("shaders/blit.vertex", "shaders/blit.fragment"); | ||
| 422 | fillShader = LoadShaders("shaders/fill.vertex", "shaders/fill.fragment"); | ||
| 423 | bloom1Shader = LoadShaders("shaders/bloom1.vertex", "shaders/bloom1.fragment"); | ||
| 424 | bloom2Shader = LoadShaders("shaders/bloom2.vertex", "shaders/bloom2.fragment"); | ||
| 425 | |||
| 426 | rendererInitialized = true; | ||
| 427 | |||
| 428 | return window; | ||
| 429 | } | ||
| 430 | |||
| 431 | void destroyRenderer() | ||
| 432 | { | ||
| 433 | if (!rendererInitialized) | ||
| 434 | { | ||
| 435 | fprintf(stderr, "Renderer not initialized\n"); | ||
| 436 | exit(-1); | ||
| 437 | } | ||
| 438 | |||
| 439 | // Delete the plane buffer | ||
| 440 | glDeleteBuffers(1, &quad_vertexbuffer); | ||
| 441 | glDeleteBuffers(1, &mesh_vertexbuffer); | ||
| 442 | glDeleteBuffers(1, &mesh_uvbuffer); | ||
| 443 | glDeleteBuffers(1, &mesh_normalbuffer); | ||
| 444 | |||
| 445 | // Delete the shaders | ||
| 446 | glDeleteProgram(ntscShader); | ||
| 447 | glDeleteProgram(finalShader); | ||
| 448 | glDeleteProgram(blitShader); | ||
| 449 | glDeleteProgram(fillShader); | ||
| 450 | glDeleteProgram(bloom1Shader); | ||
| 451 | glDeleteProgram(bloom2Shader); | ||
| 452 | |||
| 453 | // Delete the NTSC rendering buffers | ||
| 454 | glDeleteTextures(1, &renderedTex1); | ||
| 455 | glDeleteTextures(1, &renderedTex2); | ||
| 456 | glDeleteTextures(1, &artifactsTex); | ||
| 457 | glDeleteTextures(1, &scanlinesTex); | ||
| 458 | glDeleteTextures(1, &preBloomTex); | ||
| 459 | glDeleteTextures(1, &bloomPassTex1); | ||
| 460 | glDeleteTextures(1, &bloomPassTex2); | ||
| 461 | |||
| 462 | // Delete the framebuffer | ||
| 463 | glDeleteRenderbuffers(1, &bloom_depthbuffer); | ||
| 464 | glDeleteFramebuffers(1, &bloom_framebuffer); | ||
| 465 | glDeleteFramebuffers(1, &generic_framebuffer); | ||
| 466 | |||
| 467 | // Delete the VAO | ||
| 468 | glDeleteVertexArrays(1, &VertexArrayID); | ||
| 469 | |||
| 470 | // Kill the window | ||
| 471 | glfwTerminate(); | ||
| 472 | |||
| 473 | rendererInitialized = false; | ||
| 474 | } | ||
| 475 | |||
| 476 | Texture::Texture(int width, int height) | ||
| 477 | { | ||
| 478 | if (!rendererInitialized) | ||
| 479 | { | ||
| 480 | fprintf(stderr, "Renderer not initialized\n"); | ||
| 481 | exit(-1); | ||
| 482 | } | ||
| 483 | |||
| 484 | this->width = width; | ||
| 485 | this->height = height; | ||
| 486 | |||
| 487 | glGenTextures(1, &texID); | ||
| 488 | glBindTexture(GL_TEXTURE_2D, texID); | ||
| 489 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0); | ||
| 490 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); | ||
| 491 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); | ||
| 492 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); | ||
| 493 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); | ||
| 494 | } | ||
| 495 | |||
| 496 | Texture::Texture(const char* filename) | ||
| 497 | { | ||
| 498 | if (!rendererInitialized) | ||
| 499 | { | ||
| 500 | fprintf(stderr, "Renderer not initialized\n"); | ||
| 501 | exit(-1); | ||
| 502 | } | ||
| 503 | |||
| 504 | glGenTextures(1, &texID); | ||
| 505 | glBindTexture(GL_TEXTURE_2D, texID); | ||
| 506 | unsigned char* data = stbi_load(filename, &width, &height, 0, 4); | ||
| 507 | flipImageData(data, width, height, 4); | ||
| 508 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data); | ||
| 509 | stbi_image_free(data); | ||
| 510 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); | ||
| 511 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); | ||
| 512 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); | ||
| 513 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); | ||
| 514 | } | ||
| 515 | |||
| 516 | Texture::Texture(const Texture& tex) | ||
| 517 | { | ||
| 518 | if (!rendererInitialized) | ||
| 519 | { | ||
| 520 | fprintf(stderr, "Renderer not initialized\n"); | ||
| 521 | exit(-1); | ||
| 522 | } | ||
| 523 | |||
| 524 | width = tex.width; | ||
| 525 | height = tex.height; | ||
| 526 | |||
| 527 | unsigned char* data = (unsigned char*) malloc(4 * width * height); | ||
| 528 | glBindTexture(GL_TEXTURE_2D, tex.texID); | ||
| 529 | glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE, data); | ||
| 530 | |||
| 531 | glGenTextures(1, &texID); | ||
| 532 | glBindTexture(GL_TEXTURE_2D, texID); | ||
| 533 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data); | ||
| 534 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); | ||
| 535 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); | ||
| 536 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); | ||
| 537 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); | ||
| 538 | |||
| 539 | free(data); | ||
| 540 | } | ||
| 541 | |||
| 542 | Texture::Texture(Texture&& tex) : Texture(0, 0) | ||
| 543 | { | ||
| 544 | swap(*this, tex); | ||
| 545 | } | ||
| 546 | |||
| 547 | Texture::~Texture() | ||
| 548 | { | ||
| 549 | if (!rendererInitialized) | ||
| 550 | { | ||
| 551 | fprintf(stderr, "Renderer not initialized\n"); | ||
| 552 | exit(-1); | ||
| 553 | } | ||
| 554 | |||
| 555 | glDeleteTextures(1, &texID); | ||
| 556 | } | ||
| 557 | |||
| 558 | Texture& Texture::operator= (Texture tex) | ||
| 559 | { | ||
| 560 | swap(*this, tex); | ||
| 561 | |||
| 562 | return *this; | ||
| 563 | } | ||
| 564 | |||
| 565 | void swap(Texture& tex1, Texture& tex2) | ||
| 566 | { | ||
| 567 | std::swap(tex1.width, tex2.width); | ||
| 568 | std::swap(tex1.height, tex2.height); | ||
| 569 | std::swap(tex1.texID, tex2.texID); | ||
| 570 | } | ||
| 571 | |||
| 572 | void Texture::fill(Rectangle dstrect, int r, int g, int b) | ||
| 573 | { | ||
| 574 | if (!rendererInitialized) | ||
| 575 | { | ||
| 576 | fprintf(stderr, "Renderer not initialized\n"); | ||
| 577 | exit(-1); | ||
| 578 | } | ||
| 579 | |||
| 580 | // Target the framebuffer | ||
| 581 | glBindFramebuffer(GL_FRAMEBUFFER, generic_framebuffer); | ||
| 582 | glFramebufferTexture(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, texID, 0); | ||
| 583 | |||
| 584 | // Set up the vertex attributes | ||
| 585 | GLfloat minx = (GLfloat) dstrect.x / width * 2.0 - 1.0; | ||
| 586 | GLfloat miny = -((GLfloat) dstrect.y / height * 2.0 - 1.0); | ||
| 587 | GLfloat maxx = (GLfloat) (dstrect.x + dstrect.w) / width * 2.0 - 1.0; | ||
| 588 | GLfloat maxy = -((GLfloat) (dstrect.y + dstrect.h) / height * 2.0 - 1.0); | ||
| 589 | |||
| 590 | GLfloat vertexbuffer_data[] = { | ||
| 591 | minx, miny, | ||
| 592 | maxx, miny, | ||
| 593 | maxx, maxy, | ||
| 594 | minx, miny, | ||
| 595 | minx, maxy, | ||
| 596 | maxx, maxy | ||
| 597 | }; | ||
| 598 | GLuint vertexbuffer; | ||
| 599 | glGenBuffers(1, &vertexbuffer); | ||
| 600 | glBindBuffer(GL_ARRAY_BUFFER, vertexbuffer); | ||
| 601 | glBufferData(GL_ARRAY_BUFFER, sizeof(vertexbuffer_data), vertexbuffer_data, GL_STATIC_DRAW); | ||
| 602 | glEnableVertexAttribArray(0); | ||
| 603 | glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, (void*)0); | ||
| 604 | |||
| 605 | glViewport(0, 0, width, height); | ||
| 606 | glClear(GL_DEPTH_BUFFER_BIT); | ||
| 607 | glUseProgram(fillShader); | ||
| 608 | glUniform3f(glGetUniformLocation(fillShader, "vecColor"), r / 255.0, g / 255.0, b / 255.0); | ||
| 609 | |||
| 610 | glDrawArrays(GL_TRIANGLES, 0, 6); | ||
| 611 | |||
| 612 | glDisableVertexAttribArray(0); | ||
| 613 | glDeleteBuffers(1, &vertexbuffer); | ||
| 614 | } | ||
| 615 | |||
| 616 | void Texture::blit(const Texture& srctex, Rectangle srcrect, Rectangle dstrect, double alpha) | ||
| 617 | { | ||
| 618 | if (!rendererInitialized) | ||
| 619 | { | ||
| 620 | fprintf(stderr, "Renderer not initialized\n"); | ||
| 621 | exit(-1); | ||
| 622 | } | ||
| 623 | |||
| 624 | alpha = glm::clamp(alpha, 0.0, 1.0); | ||
| 625 | |||
| 626 | // Target the framebuffer | ||
| 627 | glBindFramebuffer(GL_FRAMEBUFFER, generic_framebuffer); | ||
| 628 | glFramebufferTexture(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, texID, 0); | ||
| 629 | |||
| 630 | // Set up the vertex attributes | ||
| 631 | GLfloat minx = (GLfloat) dstrect.x / width * 2.0 - 1.0; | ||
| 632 | GLfloat miny = -((GLfloat) dstrect.y / height * 2.0 - 1.0); | ||
| 633 | GLfloat maxx = (GLfloat) (dstrect.x + dstrect.w) / width * 2.0 - 1.0; | ||
| 634 | GLfloat maxy = -((GLfloat) (dstrect.y + dstrect.h) / height * 2.0 - 1.0); | ||
| 635 | |||
| 636 | GLfloat vertexbuffer_data[] = { | ||
| 637 | minx, miny, | ||
| 638 | maxx, miny, | ||
| 639 | minx, maxy, | ||
| 640 | maxx, maxy | ||
| 641 | }; | ||
| 642 | GLuint vertexbuffer; | ||
| 643 | glGenBuffers(1, &vertexbuffer); | ||
| 644 | glBindBuffer(GL_ARRAY_BUFFER, vertexbuffer); | ||
| 645 | glBufferData(GL_ARRAY_BUFFER, sizeof(vertexbuffer_data), vertexbuffer_data, GL_STATIC_DRAW); | ||
| 646 | glEnableVertexAttribArray(0); | ||
| 647 | glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, (void*)0); | ||
| 648 | |||
| 649 | GLfloat minu = (GLfloat) srcrect.x / srctex.width; | ||
| 650 | GLfloat minv = 1 - ((GLfloat) srcrect.y / srctex.height); | ||
| 651 | GLfloat maxu = (GLfloat) (srcrect.x + srcrect.w) / srctex.width; | ||
| 652 | GLfloat maxv = 1 - ((GLfloat) (srcrect.y + srcrect.h) / srctex.height); | ||
| 653 | |||
| 654 | GLfloat texcoordbuffer_data[] = { | ||
| 655 | minu, minv, | ||
| 656 | maxu, minv, | ||
| 657 | minu, maxv, | ||
| 658 | maxu, maxv | ||
| 659 | }; | ||
| 660 | GLuint texcoordbuffer; | ||
| 661 | glGenBuffers(1, &texcoordbuffer); | ||
| 662 | glBindBuffer(GL_ARRAY_BUFFER, texcoordbuffer); | ||
| 663 | glBufferData(GL_ARRAY_BUFFER, sizeof(texcoordbuffer_data), texcoordbuffer_data, GL_STATIC_DRAW); | ||
| 664 | glEnableVertexAttribArray(1); | ||
| 665 | glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 0, (void*)0); | ||
| 666 | |||
| 667 | // Set up the shader | ||
| 668 | glUseProgram(blitShader); | ||
| 669 | glClear(GL_DEPTH_BUFFER_BIT); | ||
| 670 | glViewport(0, 0, width, height); | ||
| 671 | |||
| 672 | glActiveTexture(GL_TEXTURE0); | ||
| 673 | glBindTexture(GL_TEXTURE_2D, srctex.texID); | ||
| 674 | glUniform1i(glGetUniformLocation(blitShader, "srctex"), 0); | ||
| 675 | glUniform1f(glGetUniformLocation(blitShader, "alpha"), alpha); | ||
| 676 | |||
| 677 | // Blit! | ||
| 678 | glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); | ||
| 679 | |||
| 680 | // Unload everything | ||
| 681 | glDisableVertexAttribArray(1); | ||
| 682 | glDisableVertexAttribArray(0); | ||
| 683 | glDeleteBuffers(1, &texcoordbuffer); | ||
| 684 | glDeleteBuffers(1, &vertexbuffer); | ||
| 685 | } | ||
| 686 | |||
| 687 | void bloomPass1(GLuint srcTex, GLuint dstTex, bool horizontal, glm::vec2 srcRes, glm::vec2 dstRes) | ||
| 688 | { | ||
| 689 | glBindFramebuffer(GL_FRAMEBUFFER, generic_framebuffer); | ||
| 690 | glFramebufferTexture(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, dstTex, 0); | ||
| 691 | glViewport(0,0,dstRes.x,dstRes.y); | ||
| 692 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); | ||
| 693 | glUseProgram(bloom1Shader); | ||
| 694 | |||
| 695 | glActiveTexture(GL_TEXTURE0); | ||
| 696 | glBindTexture(GL_TEXTURE_2D, srcTex); | ||
| 697 | glUniform1i(glGetUniformLocation(bloom1Shader, "inTex"), 0); | ||
| 698 | |||
| 699 | glm::vec2 offset = glm::vec2(0.0); | ||
| 700 | if (horizontal) | ||
| 701 | { | ||
| 702 | offset.x = 1.2/srcRes.x; | ||
| 703 | } else { | ||
| 704 | offset.y = 1.2/srcRes.y; | ||
| 705 | } | ||
| 706 | |||
| 707 | glUniform2f(glGetUniformLocation(bloom1Shader, "offset"), offset.x, offset.y); | ||
| 708 | |||
| 709 | glEnableVertexAttribArray(0); | ||
| 710 | glBindBuffer(GL_ARRAY_BUFFER, quad_vertexbuffer); | ||
| 711 | glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, (void*)0); | ||
| 712 | glDrawArrays(GL_TRIANGLES, 0, 6); | ||
| 713 | glDisableVertexAttribArray(0); | ||
| 714 | } | ||
| 715 | |||
| 716 | void Texture::renderScreen() const | ||
| 717 | { | ||
| 718 | if (!rendererInitialized) | ||
| 719 | { | ||
| 720 | fprintf(stderr, "Renderer not initialized\n"); | ||
| 721 | exit(-1); | ||
| 722 | } | ||
| 723 | |||
| 724 | // First we're going to composite our frame with the previous frame | ||
| 725 | // We start by setting up the framebuffer | ||
| 726 | glBindFramebuffer(GL_FRAMEBUFFER, generic_framebuffer); | ||
| 727 | glFramebufferTexture(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, renderedTexBufs[curBuf], 0); | ||
| 728 | |||
| 729 | // Set up the shader | ||
| 730 | glViewport(0,0,GAME_WIDTH,GAME_HEIGHT); | ||
| 731 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); | ||
| 732 | glUseProgram(ntscShader); | ||
| 733 | |||
| 734 | // Use the current frame texture, nearest neighbor and clamped to edge | ||
| 735 | glActiveTexture(GL_TEXTURE0); | ||
| 736 | glBindTexture(GL_TEXTURE_2D, texID); | ||
| 737 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); | ||
| 738 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); | ||
| 739 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); | ||
| 740 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); | ||
| 741 | glUniform1i(glGetUniformLocation(ntscShader, "curFrameSampler"), 0); | ||
| 742 | |||
| 743 | // Use the previous frame composite texture, nearest neighbor and clamped to edge | ||
| 744 | glActiveTexture(GL_TEXTURE1); | ||
| 745 | glBindTexture(GL_TEXTURE_2D, renderedTexBufs[(curBuf + 1) % 2]); | ||
| 746 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); | ||
| 747 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); | ||
| 748 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); | ||
| 749 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); | ||
| 750 | glUniform1i(glGetUniformLocation(ntscShader, "prevFrameSampler"), 1); | ||
| 751 | |||
| 752 | // Load the NTSC artifact texture | ||
| 753 | glActiveTexture(GL_TEXTURE2); | ||
| 754 | glBindTexture(GL_TEXTURE_2D, artifactsTex); | ||
| 755 | glUniform1i(glGetUniformLocation(ntscShader, "NTSCArtifactSampler"), 2); | ||
| 756 | glUniform1f(glGetUniformLocation(ntscShader, "NTSCLerp"), curBuf * 1.0); | ||
| 757 | |||
| 758 | if ((rand() % 60) == 0) | ||
| 759 | { | ||
| 760 | // Change the 0.0 to a 1.0 or a 10.0 for a glitchy effect! | ||
| 761 | glUniform1f(glGetUniformLocation(ntscShader, "Tuning_NTSC"), 0.0); | ||
| 762 | } else { | ||
| 763 | glUniform1f(glGetUniformLocation(ntscShader, "Tuning_NTSC"), 0.0); | ||
| 764 | } | ||
| 765 | |||
| 766 | // Render our composition | ||
| 767 | glEnableVertexAttribArray(0); | ||
| 768 | glBindBuffer(GL_ARRAY_BUFFER, quad_vertexbuffer); | ||
| 769 | glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, (void*)0); | ||
| 770 | glDrawArrays(GL_TRIANGLES, 0, 6); | ||
| 771 | glDisableVertexAttribArray(0); | ||
| 772 | |||
| 773 | // We're going to render the screen now | ||
| 774 | glBindFramebuffer(GL_FRAMEBUFFER, bloom_framebuffer); | ||
| 775 | glFramebufferTexture(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, preBloomTex, 0); | ||
| 776 | glViewport(0,0,buffer_width,buffer_height); | ||
| 777 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); | ||
| 778 | glUseProgram(finalShader); | ||
| 779 | |||
| 780 | // Use the composited frame texture, linearly filtered and filling in black for the border | ||
| 781 | glActiveTexture(GL_TEXTURE0); | ||
| 782 | glBindTexture(GL_TEXTURE_2D, renderedTexBufs[curBuf]); | ||
| 783 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); | ||
| 784 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); | ||
| 785 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER); | ||
| 786 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER); | ||
| 787 | float border_color[] = {0.0f, 0.0f, 0.0f, 1.0f}; | ||
| 788 | glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_BORDER_COLOR, border_color); | ||
| 789 | glGenerateMipmap(GL_TEXTURE_2D); | ||
| 790 | glUniform1i(glGetUniformLocation(finalShader, "rendertex"), 0); | ||
| 791 | |||
| 792 | // Use the scanlines texture | ||
| 793 | glActiveTexture(GL_TEXTURE1); | ||
| 794 | glBindTexture(GL_TEXTURE_2D, scanlinesTex); | ||
| 795 | glUniform1i(glGetUniformLocation(finalShader, "scanlinestex"), 1); | ||
| 796 | |||
| 797 | // Initialize the MVP matrices | ||
| 798 | glm::mat4 p_matrix = glm::perspective(glm::radians(25.0f), (float) buffer_width / (float) buffer_height, 0.1f, 100.0f); | ||
| 799 | glm::mat4 v_matrix = glm::lookAt(glm::vec3(3.75,0,0), glm::vec3(0,0,0), glm::vec3(0,1,0)); | ||
| 800 | glm::mat4 m_matrix = glm::mat4(1.0); | ||
| 801 | glm::mat4 mvp_matrix = p_matrix * v_matrix * m_matrix; | ||
| 802 | |||
| 803 | glUniformMatrix4fv(glGetUniformLocation(finalShader, "MVP"), 1, GL_FALSE, &mvp_matrix[0][0]); | ||
| 804 | glUniformMatrix4fv(glGetUniformLocation(finalShader, "worldMat"), 1, GL_FALSE, &m_matrix[0][0]); | ||
| 805 | glUniform2f(glGetUniformLocation(finalShader, "resolution"), buffer_width, buffer_height); | ||
| 806 | glUniform1f(glGetUniformLocation(finalShader, "iGlobalTime"), glfwGetTime()); | ||
| 807 | glUniform3f(glGetUniformLocation(finalShader, "frameColor"), 0.76f, 0.78f, 0.81f); | ||
| 808 | |||
| 809 | glEnableVertexAttribArray(0); | ||
| 810 | glBindBuffer(GL_ARRAY_BUFFER, mesh_vertexbuffer); | ||
| 811 | glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, (void*)0); | ||
| 812 | |||
| 813 | glEnableVertexAttribArray(1); | ||
| 814 | glBindBuffer(GL_ARRAY_BUFFER, mesh_normalbuffer); | ||
| 815 | glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 0, (void*)0); | ||
| 816 | |||
| 817 | glEnableVertexAttribArray(2); | ||
| 818 | glBindBuffer(GL_ARRAY_BUFFER, mesh_uvbuffer); | ||
| 819 | glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 0, (void*)0); | ||
| 820 | |||
| 821 | glDrawArrays(GL_TRIANGLES, 0, mesh_numvertices); | ||
| 822 | glDisableVertexAttribArray(2); | ||
| 823 | glDisableVertexAttribArray(1); | ||
| 824 | glDisableVertexAttribArray(0); | ||
| 825 | |||
| 826 | // First pass of bloom! | ||
| 827 | glm::vec2 buffer_size = glm::vec2(buffer_width, buffer_height); | ||
| 828 | bloomPass1(preBloomTex, bloomPassTex1, true, buffer_size, buffer_size / 4.0f); | ||
| 829 | bloomPass1(bloomPassTex1, bloomPassTex2, false, buffer_size / 4.0f, buffer_size / 4.0f); | ||
| 830 | |||
| 831 | // Do the second pass of bloom and render to screen | ||
| 832 | glBindFramebuffer(GL_FRAMEBUFFER, 0); | ||
| 833 | glViewport(0, 0, buffer_width, buffer_height); | ||
| 834 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); | ||
| 835 | glUseProgram(bloom2Shader); | ||
| 836 | |||
| 837 | glActiveTexture(GL_TEXTURE0); | ||
| 838 | glBindTexture(GL_TEXTURE_2D, preBloomTex); | ||
| 839 | glUniform1i(glGetUniformLocation(bloom2Shader, "clearTex"), 0); | ||
| 840 | |||
| 841 | glActiveTexture(GL_TEXTURE1); | ||
| 842 | glBindTexture(GL_TEXTURE_2D, bloomPassTex2); | ||
| 843 | glUniform1i(glGetUniformLocation(bloom2Shader, "blurTex"), 1); | ||
| 844 | |||
| 845 | glUniform1f(glGetUniformLocation(bloom2Shader, "iGlobalTime"), glfwGetTime()); | ||
| 846 | |||
| 847 | glEnableVertexAttribArray(0); | ||
| 848 | glBindBuffer(GL_ARRAY_BUFFER, quad_vertexbuffer); | ||
| 849 | glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, (void*)0); | ||
| 850 | glDrawArrays(GL_TRIANGLES, 0, 6); | ||
| 851 | glDisableVertexAttribArray(0); | ||
| 852 | |||
| 853 | glfwSwapBuffers(window); | ||
| 854 | |||
| 855 | curBuf = (curBuf + 1) % 2; | ||
| 856 | } | ||
| 857 | |||
| 858 | Rectangle Texture::entirety() const | ||
| 859 | { | ||
| 860 | return {0, 0, width, height}; | ||
| 861 | } | ||
