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266 lines
9.8 KiB
266 lines
9.8 KiB
#include <windows.h>
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#include "glew.h"
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#include <stdio.h>
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#include <math.h>
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#include "utils.h"
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#include "GPUProgram.h"
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#include "ObjModel.h"
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#include "FBO.h"
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#include "FullScreenQuad.h"
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#include "Glm/glm.hpp"
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#include "Glm/ext.hpp"
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#pragma comment(lib,"opengl32.lib")
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#pragma comment(lib,"glew32.lib")
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LRESULT CALLBACK GLWindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
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{
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switch (msg)
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{
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case WM_CLOSE:
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PostQuitMessage(0);
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break;
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}
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return DefWindowProc(hwnd,msg,wParam,lParam);
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}
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INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPSTR lpCmdLine, _In_ int nShowCmd)
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{
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WNDCLASSEX wndClass;
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wndClass.cbClsExtra = 0;
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wndClass.cbSize = sizeof(WNDCLASSEX);
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wndClass.cbWndExtra = 0;
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wndClass.hbrBackground = NULL;
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wndClass.hCursor = LoadCursor(NULL,IDC_ARROW);
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wndClass.hIcon = NULL;
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wndClass.hIconSm = NULL;
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wndClass.hInstance = hInstance;
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wndClass.lpfnWndProc=GLWindowProc;
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wndClass.lpszClassName = "OpenGL";
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wndClass.lpszMenuName = NULL;
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wndClass.style = CS_VREDRAW | CS_HREDRAW;
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ATOM atom = RegisterClassEx(&wndClass);
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RECT rect;
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rect.left = 0;
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rect.top = 0;
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rect.right = 1280;
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rect.bottom = 720;
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AdjustWindowRect(&rect, WS_OVERLAPPEDWINDOW, FALSE);
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HWND hwnd = CreateWindowEx(NULL, "OpenGL", "RenderWindow", WS_OVERLAPPEDWINDOW, 100, 100, rect.right - rect.left, rect.bottom - rect.top, NULL, NULL, hInstance, NULL);
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HDC dc = GetDC(hwnd);
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PIXELFORMATDESCRIPTOR pfd;
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memset(&pfd, 0, sizeof(PIXELFORMATDESCRIPTOR));
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pfd.nVersion = 1;
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pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_TYPE_RGBA | PFD_DOUBLEBUFFER;
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pfd.iLayerType = PFD_MAIN_PLANE;
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pfd.iPixelType = PFD_TYPE_RGBA;
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pfd.cColorBits = 32;
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pfd.cDepthBits = 24;
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pfd.cStencilBits = 8;
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int pixelFormatID = ChoosePixelFormat(dc, &pfd);
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SetPixelFormat(dc,pixelFormatID,&pfd);
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HGLRC rc = wglCreateContext(dc);
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wglMakeCurrent(dc, rc);
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GetClientRect(hwnd, &rect);
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int viewportWidth = rect.right - rect.left, viewportHeight = rect.bottom - rect.top;
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glewInit();
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//init fsqgpu program
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GPUProgram fsqProgram;
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fsqProgram.AttachShader(GL_VERTEX_SHADER, "res/shader/fullscreenquad.vs");
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fsqProgram.AttachShader(GL_FRAGMENT_SHADER, "res/shader/fullscreenquad.fs");
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fsqProgram.Link();
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fsqProgram.DetectAttribute("pos");
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fsqProgram.DetectAttribute("texcoord");
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fsqProgram.DetectUniform("U_MainTexture");
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//gpu program
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GPUProgram gpuProgram;
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gpuProgram.AttachShader(GL_VERTEX_SHADER, "res/shader/forg.vs");
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gpuProgram.AttachShader(GL_FRAGMENT_SHADER, "res/shader/forg.fs");
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gpuProgram.Link();
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gpuProgram.DetectAttribute("pos");
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gpuProgram.DetectAttribute("texcoord");
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gpuProgram.DetectAttribute("normal");
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gpuProgram.DetectUniform("M");
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gpuProgram.DetectUniform("V");
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gpuProgram.DetectUniform("P");
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gpuProgram.DetectUniform("NM");
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gpuProgram.DetectUniform("U_AmbientLightColor");
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gpuProgram.DetectUniform("U_AmbientMaterial");
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gpuProgram.DetectUniform("U_DiffuseLightColor");
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gpuProgram.DetectUniform("U_DiffuseMaterial");
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gpuProgram.DetectUniform("U_DiffuseIntensity");
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gpuProgram.DetectUniform("U_LightPos");
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gpuProgram.DetectUniform("U_LightDirection");
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gpuProgram.DetectUniform("U_Cutoff");
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gpuProgram.DetectUniform("U_SpecularLightColor");
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gpuProgram.DetectUniform("U_SpecularMaterial");
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gpuProgram.DetectUniform("U_FogStart");
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gpuProgram.DetectUniform("U_FogEnd");
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gpuProgram.DetectUniform("U_FogColor");
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gpuProgram.DetectUniform("U_FogDensity");
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//init 3d model
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ObjModel cube;
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cube.Init("res/model/Sphere.obj");
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float identity[] = {
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1.0f,0,0,0,
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0,1.0f,0,0,
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0,0,1.0f,0,
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0,0,0,1.0f
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};
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float ambientLightColor[] = { 0.4f,0.4f,0.4f,1.0f };
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float ambientMaterial[] = { 0.2f,0.2f,0.2f,1.0f };
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float diffuseLightColor[] = { 0.1f,0.4f,0.7f,1.0f };
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float diffuseMaterial[] = { 0.6f, 0.6f, 0.6f, 1.0f };
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float lightPos[] = { 1.0f,1.0f,0.0f,0.0f };
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float diffuseIntensity = 1.0f;
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float spotLightDirection[] = { 0.0f, -1.0f, 0.0f, 628.0f };
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float spotLightCutoff = 5.0f;
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float specularLightColor[] = { 1.0f,1.0f,1.0f,1.0f };
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float specularMaterial[] = { 1.0f,1.0f,1.0f,1.0f };
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float eyePos[] = { 0.0f,0.0f,0.0f };
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float fogStart = 2.0f;
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float fogEnd = 23.0f;
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float fogColor[] = { 0.6f, 0.6f, 0.6f, 1.0f };
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float fogDensity = 0.11;
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glm::mat4 cubeModelMatrix = glm::translate<float>(-2.2f, 0.0f, -4.0f) * glm::rotate(-30.0f, 1.0f, 1.0f, 1.0f);
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glm::mat4 cubeNormalMatrix = glm::inverseTranspose(cubeModelMatrix);
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glm::mat4 cubeModelMatrix2 = glm::translate<float>(-2.0f, 0.0f, -12.0f) * glm::rotate(-30.0f, 1.0f, 1.0f, 1.0f);
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glm::mat4 cubeNormalMatrix2 = glm::inverseTranspose(cubeModelMatrix);
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glm::mat4 cubeModelMatrix3 = glm::translate<float>(-0.4f, 0.0f, -20.0f) * glm::rotate(-30.0f, 1.0f, 1.0f, 1.0f);
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glm::mat4 cubeNormalMatrix3 = glm::inverseTranspose(cubeModelMatrix);
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//glm::mat4 viewMatrix = glm::lookAt(glm::vec3(1.0f, 0.5f, -10.0f), glm::vec3(0.0f, 0.0f, -1.0f), glm::vec3(0.0f, 1.0f, 0.0f));
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glm::mat4 projectionMatrix = glm::perspective(50.0f, (float)viewportWidth / (float)viewportHeight, 0.1f, 1000.0f);
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//³õʼ»¯fsq
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FullScreenQuad fsq;
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fsq.Init();
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//³õʼ»¯2¸öfbo
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FBO fbo[2];
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fbo[0].AttachColorBuffer("color", GL_COLOR_ATTACHMENT0, GL_RGBA, viewportWidth, viewportHeight);
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fbo[0].AttachDepthBuffer("depth", viewportWidth, viewportHeight);
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fbo[0].Finish();
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fbo[1].AttachColorBuffer("color", GL_COLOR_ATTACHMENT0, GL_RGBA, viewportWidth, viewportHeight);
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fbo[1].AttachDepthBuffer("depth", viewportWidth, viewportHeight);
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fbo[1].Finish();
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ShowWindow(hwnd, SW_SHOW);
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UpdateWindow(hwnd);
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glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
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MSG msg;
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while (true)
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{
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if (PeekMessage(&msg,NULL,NULL,NULL,PM_REMOVE))
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{
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if (msg.message==WM_QUIT)
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{
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break;
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}
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TranslateMessage(&msg);
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DispatchMessage(&msg);
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}
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glEnable(GL_DEPTH_TEST);
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glUseProgram(gpuProgram.mProgram);
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glUniformMatrix4fv(gpuProgram.GetLocation("V"), 1, GL_FALSE, identity);
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glUniformMatrix4fv(gpuProgram.GetLocation("P"), 1, GL_FALSE, glm::value_ptr(projectionMatrix));
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glUniform4fv(gpuProgram.GetLocation("U_AmbientLightColor"), 1, ambientLightColor);
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glUniform4fv(gpuProgram.GetLocation("U_AmbientMaterial"), 1, ambientMaterial);
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glUniform4fv(gpuProgram.GetLocation("U_DiffuseLightColor"), 1, diffuseLightColor);
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glUniform4fv(gpuProgram.GetLocation("U_DiffuseMaterial"), 1, diffuseMaterial);
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glUniform1f(gpuProgram.GetLocation("U_DiffuseIntensity"), diffuseIntensity);
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glUniform4fv(gpuProgram.GetLocation("U_LightPos"), 1, lightPos);
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glUniform4fv(gpuProgram.GetLocation("U_LightDirection"), 1, spotLightDirection);
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glUniform1f(gpuProgram.GetLocation("U_Cutoff"), spotLightCutoff);
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glUniform4fv(gpuProgram.GetLocation("U_SpecularLightColor"), 1, specularLightColor);
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glUniform4fv(gpuProgram.GetLocation("U_SpecularMaterial"), 1, specularMaterial);
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glUniform3fv(gpuProgram.GetLocation("U_EyePos"), 1, eyePos);
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glUniform1f(gpuProgram.GetLocation("U_FogStart"), fogStart);
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glUniform1f(gpuProgram.GetLocation("U_FogEnd"), fogEnd);
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glUniform4fv(gpuProgram.GetLocation("U_FogColor"), 1, fogColor);
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fbo[0].Bind();
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fogDensity = 0.11;
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glUniform1f(gpuProgram.GetLocation("U_FogDensity"), fogDensity);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glUniformMatrix4fv(gpuProgram.GetLocation("M"), 1, GL_FALSE, glm::value_ptr(cubeModelMatrix));
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glUniformMatrix4fv(gpuProgram.GetLocation("NM"), 1, GL_FALSE, glm::value_ptr(cubeNormalMatrix));
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cube.Bind(gpuProgram.GetLocation("pos"), gpuProgram.GetLocation("texcoord"), gpuProgram.GetLocation("normal"));
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cube.Draw();
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glUniformMatrix4fv(gpuProgram.GetLocation("M"), 1, GL_FALSE, glm::value_ptr(cubeModelMatrix2));
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glUniformMatrix4fv(gpuProgram.GetLocation("NM"), 1, GL_FALSE, glm::value_ptr(cubeNormalMatrix2));
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cube.Bind(gpuProgram.GetLocation("pos"), gpuProgram.GetLocation("texcoord"), gpuProgram.GetLocation("normal"));
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cube.Draw();
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glUniformMatrix4fv(gpuProgram.GetLocation("M"), 1, GL_FALSE, glm::value_ptr(cubeModelMatrix3));
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glUniformMatrix4fv(gpuProgram.GetLocation("NM"), 1, GL_FALSE, glm::value_ptr(cubeNormalMatrix3));
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cube.Bind(gpuProgram.GetLocation("pos"), gpuProgram.GetLocation("texcoord"), gpuProgram.GetLocation("normal"));
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cube.Draw();
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fbo[0].Unbind();
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fbo[1].Bind();
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fogDensity = 0.31;
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glUniform1f(gpuProgram.GetLocation("U_FogDensity"), fogDensity);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glUniformMatrix4fv(gpuProgram.GetLocation("M"), 1, GL_FALSE, glm::value_ptr(cubeModelMatrix));
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glUniformMatrix4fv(gpuProgram.GetLocation("NM"), 1, GL_FALSE, glm::value_ptr(cubeNormalMatrix));
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cube.Bind(gpuProgram.GetLocation("pos"), gpuProgram.GetLocation("texcoord"), gpuProgram.GetLocation("normal"));
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cube.Draw();
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glUniformMatrix4fv(gpuProgram.GetLocation("M"), 1, GL_FALSE, glm::value_ptr(cubeModelMatrix2));
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glUniformMatrix4fv(gpuProgram.GetLocation("NM"), 1, GL_FALSE, glm::value_ptr(cubeNormalMatrix2));
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cube.Bind(gpuProgram.GetLocation("pos"), gpuProgram.GetLocation("texcoord"), gpuProgram.GetLocation("normal"));
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cube.Draw();
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glUniformMatrix4fv(gpuProgram.GetLocation("M"), 1, GL_FALSE, glm::value_ptr(cubeModelMatrix3));
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glUniformMatrix4fv(gpuProgram.GetLocation("NM"), 1, GL_FALSE, glm::value_ptr(cubeNormalMatrix3));
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cube.Bind(gpuProgram.GetLocation("pos"), gpuProgram.GetLocation("texcoord"), gpuProgram.GetLocation("normal"));
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cube.Draw();
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fbo[1].Unbind();
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glUseProgram(0);
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glFlush();
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glClearColor(0.6f, 0.6f, 0.6f, 1.0f);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glActiveTexture(GL_TEXTURE0);
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glUseProgram(fsqProgram.mProgram);
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glBindTexture(GL_TEXTURE_2D, fbo[0].GetBuffer("color"));
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glUniform1i(fsqProgram.GetLocation("U_MainTexture"), 0);
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fsq.DrawToLeftTop(fsqProgram.GetLocation("pos"), fsqProgram.GetLocation("texcoord"));
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glBindTexture(GL_TEXTURE_2D, fbo[1].GetBuffer("color"));
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glUniform1i(fsqProgram.GetLocation("U_MainTexture"), 0);
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fsq.DrawToRightTop(fsqProgram.GetLocation("pos"), fsqProgram.GetLocation("texcoord"));
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glUseProgram(0);
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SwapBuffers(dc);
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}
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return 0;
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}
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