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blobt 4 years ago
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7 changed files with 205 additions and 19 deletions
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  1. BIN
      .vs/shader3/v14/.suo
  2. 110
      FullScreenQuad.cpp
  3. 7
      FullScreenQuad.h
  4. 96
      main.cpp
  5. 3
      res/shader/fullscreenquad.vs
  6. 2
      shader3.vcxproj
  7. 6
      shader3.vcxproj.filters

BIN
.vs/shader3/v14/.suo
View File

110
FullScreenQuad.cpp
View File

@ -3,23 +3,115 @@
void FullScreenQuad::Init()
{
float pos[] = {
-0.5f,-0.5f,-1.0f,
0.5f,-0.5f,-1.0f,
0.5f,0.5f,-1.0f,
-0.5f,0.5f,-1.0f
};
glGenBuffers(1, &mVBO);
glBindBuffer(GL_ARRAY_BUFFER, mVBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(float) * 12, pos, GL_STATIC_DRAW);
glBufferData(GL_ARRAY_BUFFER, sizeof(float) * 20, nullptr, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
}
void FullScreenQuad::Draw(GLint posLoc)
void FullScreenQuad::Draw(GLint posLoc, GLint texcoordLoc)
{
//draw fullscreen
float vertices[] = {
-0.5f,-0.5f,-1.0f,0.0f,0.0f,
0.5f,-0.5f,-1.0f,1.0f,0.0f,
0.5f,0.5f,-1.0f,1.0f,1.0f,
-0.5f,0.5f,-1.0f,0.0f,1.0f
};
glBindBuffer(GL_ARRAY_BUFFER, mVBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(float) * 20, vertices, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, mVBO);
glEnableVertexAttribArray(posLoc);
glVertexAttribPointer(posLoc, 3, GL_FLOAT, GL_FALSE, sizeof(float) * 5, 0);
glEnableVertexAttribArray(texcoordLoc);
glVertexAttribPointer(texcoordLoc, 2, GL_FLOAT, GL_FALSE, sizeof(float) * 5, (void*)(sizeof(float) * 3));
glDrawArrays(GL_QUADS, 0, 4);
glBindBuffer(GL_ARRAY_BUFFER, 0);
}
void FullScreenQuad::DrawToLeftTop(GLint posLoc, GLint texcoordLoc)
{
//draw to left top qualter of screen
float vertices[] = {
-0.5f,0.0f,-1.0f,0.0f,0.0f,
0.0f,0.0f,-1.0f,1.0f,0.0f,
0.0f,0.5f,-1.0f,1.0f,1.0f,
-0.5f,0.5f,-1.0f,0.0f,1.0f
};
glBindBuffer(GL_ARRAY_BUFFER, mVBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(float) * 20, vertices, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, mVBO);
glEnableVertexAttribArray(posLoc);
glVertexAttribPointer(posLoc, 3, GL_FLOAT, GL_FALSE, sizeof(float) * 5, 0);
glEnableVertexAttribArray(texcoordLoc);
glVertexAttribPointer(texcoordLoc, 2, GL_FLOAT, GL_FALSE, sizeof(float) * 5, (void*)(sizeof(float) * 3));
glDrawArrays(GL_QUADS, 0, 4);
glBindBuffer(GL_ARRAY_BUFFER, 0);
}
void FullScreenQuad::DrawToLeftBottom(GLint posLoc, GLint texcoordLoc)
{
float vertices[] = {
-0.5f,-0.5f,-1.0f,0.0f,0.0f,
0.0f,-0.5f,-1.0f,1.0f,0.0f,
0.0f,0.0f,-1.0f,1.0f,1.0f,
-0.5f,0.0f,-1.0f,0.0f,1.0f
};
glBindBuffer(GL_ARRAY_BUFFER, mVBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(float) * 20, vertices, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, mVBO);
glEnableVertexAttribArray(posLoc);
glVertexAttribPointer(posLoc, 3, GL_FLOAT, GL_FALSE, sizeof(float) * 5, 0);
glEnableVertexAttribArray(texcoordLoc);
glVertexAttribPointer(texcoordLoc, 2, GL_FLOAT, GL_FALSE, sizeof(float) * 5, (void*)(sizeof(float) * 3));
glDrawArrays(GL_QUADS, 0, 4);
glBindBuffer(GL_ARRAY_BUFFER, 0);
}
void FullScreenQuad::DrawToRightTop(GLint posLoc, GLint texcoordLoc)
{
float vertices[] = {
0.0f,-0.0f,-1.0f,0.0f,0.0f,
0.5f,-0.0f,-1.0f,1.0f,0.0f,
0.5f,0.5f,-1.0f,1.0f,1.0f,
0.0f,0.5f,-1.0f,0.0f,1.0f
};
glBindBuffer(GL_ARRAY_BUFFER, mVBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(float) * 20, vertices, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, mVBO);
glEnableVertexAttribArray(posLoc);
glVertexAttribPointer(posLoc, 3, GL_FLOAT, GL_FALSE, sizeof(float) * 5, 0);
glEnableVertexAttribArray(texcoordLoc);
glVertexAttribPointer(texcoordLoc, 2, GL_FLOAT, GL_FALSE, sizeof(float) * 5, (void*)(sizeof(float) * 3));
glDrawArrays(GL_QUADS, 0, 4);
glBindBuffer(GL_ARRAY_BUFFER, 0);
}
void FullScreenQuad::DrawToRightBottom(GLint posLoc, GLint texcoordLoc)
{
float vertices[] = {
0.0f,-0.5f,-1.0f,0.0f,0.0f,
0.5f,-0.5f,-1.0f,1.0f,0.0f,
0.5f,0.0f,-1.0f,1.0f,1.0f,
0.0f,0.0f,-1.0f,0.0f,1.0f
};
glBindBuffer(GL_ARRAY_BUFFER, mVBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(float) * 20, vertices, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ARRAY_BUFFER, mVBO);
glEnableVertexAttribArray(posLoc);
glVertexAttribPointer(posLoc, 3, GL_FLOAT, GL_FALSE, sizeof(float) * 3, 0);
glVertexAttribPointer(posLoc, 3, GL_FLOAT, GL_FALSE, sizeof(float) * 5, 0);
glEnableVertexAttribArray(texcoordLoc);
glVertexAttribPointer(texcoordLoc, 2, GL_FLOAT, GL_FALSE, sizeof(float) * 5, (void*)(sizeof(float) * 3));
glDrawArrays(GL_QUADS, 0, 4);
glBindBuffer(GL_ARRAY_BUFFER, 0);
}

7
FullScreenQuad.h
View File

@ -7,5 +7,10 @@ public:
GLuint mVBO;
public:
void Init();
void Draw(GLint posLoc);
void Draw(GLint posLoc, GLint texcoordLoc);
void DrawToLeftTop(GLint posLoc, GLint texcoordLoc);
void DrawToRightTop(GLint posLoc, GLint texcoordLoc);
void DrawToLeftBottom(GLint posLoc, GLint texcoordLoc);
void DrawToRightBottom(GLint posLoc, GLint texcoordLoc);
};

96
main.cpp
View File

@ -41,7 +41,14 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
wndClass.style = CS_VREDRAW | CS_HREDRAW;
ATOM atom = RegisterClassEx(&wndClass);
HWND hwnd = CreateWindowEx(NULL, "OpenGL", "RenderWindow", WS_OVERLAPPEDWINDOW, 100, 100, 800, 600, NULL, NULL, hInstance, NULL);
RECT rect;
rect.left = 0;
rect.top = 0;
rect.right = 800;
rect.bottom = 600;
AdjustWindowRect(&rect, WS_OVERLAPPEDWINDOW, FALSE);
HWND hwnd = CreateWindowEx(NULL, "OpenGL", "RenderWindow", WS_OVERLAPPEDWINDOW, 100, 100, rect.right - rect.left, rect.bottom - rect.top, NULL, NULL, hInstance, NULL);
HDC dc = GetDC(hwnd);
PIXELFORMATDESCRIPTOR pfd;
memset(&pfd, 0, sizeof(PIXELFORMATDESCRIPTOR));
@ -60,7 +67,20 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
HGLRC rc = wglCreateContext(dc);
wglMakeCurrent(dc, rc);
GetClientRect(hwnd, &rect);
int viewportWidth = rect.right - rect.left, viewportHeight = rect.bottom - rect.top;
glewInit();
//init fsqgpu program
GPUProgram fsqProgram;
fsqProgram.AttachShader(GL_VERTEX_SHADER, "res/shader/fullscreenquad.vs");
fsqProgram.AttachShader(GL_FRAGMENT_SHADER, "res/shader/fullscreenquad.fs");
fsqProgram.Link();
fsqProgram.DetectAttribute("pos");
fsqProgram.DetectAttribute("texcoord");
fsqProgram.DetectUniform("U_MainTexture");
//init gpu program
GPUProgram gpuProgram;
gpuProgram.AttachShader(GL_VERTEX_SHADER, "res/shader/test.vs");
@ -111,19 +131,46 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
float specularMaterial[] = { 1.0f,1.0f,1.0f,1.0f };
float eyePos[] = { 0.0f,0.0f,0.0f };
glm::mat4 model1 = glm::translate<float>(-2.0f, 0.0f, -6.0f) * glm::rotate(-30.0f , 1.0f, 1.0f, 1.0f);
glm::mat4 model2 = glm::translate<float>(0.0f, 0.0f, -6.0f) * glm::rotate(-30.0f, 1.0f, 1.0f, 1.0f);
glm::mat4 model3 = glm::translate<float>(2.0f, 0.0f, -6.0f) * glm::rotate(-30.0f, 1.0f, 1.0f, 1.0f);
glm::mat4 model2 = glm::translate<float>(2.0f, 0.0f, -6.0f) * glm::rotate(-30.0f, 1.0f, 1.0f, 1.0f);
glm::mat4 model3 = glm::translate<float>(6.0f, 0.0f, -6.0f) * glm::rotate(-30.0f, 1.0f, 1.0f, 1.0f);
glm::mat4 viewMatrix1 = glm::lookAt(glm::vec3(-0.0f, 1.5f, -3.0f), glm::vec3(-2.0f, 0.0f, -6.0f), glm::vec3(0.0f, 1.0f, 0.0f));
glm::mat4 viewMatrix2 = glm::lookAt(glm::vec3(3.0f, 1.5f, -3.0f), glm::vec3(2.0f, 0.0f, -6.0f), glm::vec3(0.0f, 1.0f, 0.0f));
glm::mat4 viewMatrix3 = glm::lookAt(glm::vec3(7.0f, 1.5f, -3.0f), glm::vec3(6.0f, 0.0f, -6.0f), glm::vec3(0.0f, 1.0f, 0.0f));
glm::mat4 projectionMatrix = glm::perspective(50.0f, 800.0f / 600.0f, 0.1f, 1000.0f);
glm::mat4 normalMatrix1 = glm::inverseTranspose(model1);
glm::mat4 normalMatrix2 = glm::inverseTranspose(model2);
glm::mat4 normalMatrix3 = glm::inverseTranspose(model3);
//³õʼ»¯fsq
FullScreenQuad fsq;
fsq.Init();
//³õʼ»¯FBO
FBO fboDirectionLight;
fboDirectionLight.AttachColorBuffer("color", GL_COLOR_ATTACHMENT0, GL_RGBA, viewportWidth, viewportHeight);
fboDirectionLight.AttachDepthBuffer("depth", viewportWidth, viewportHeight);
fboDirectionLight.Finish();
FBO fboPointerLight;
fboPointerLight.AttachColorBuffer("color", GL_COLOR_ATTACHMENT0, GL_RGBA, viewportWidth, viewportHeight);
fboPointerLight.AttachDepthBuffer("depth", viewportWidth, viewportHeight);
fboPointerLight.Finish();
FBO fboSpotLight;
fboSpotLight.AttachColorBuffer("color", GL_COLOR_ATTACHMENT0, GL_RGBA, viewportWidth, viewportHeight);
fboSpotLight.AttachDepthBuffer("depth", viewportWidth, viewportHeight);
fboSpotLight.Finish();
glClearColor(41.0f/255.0f, 71.0f/255.0f, 121.0f / 255.0f, 1.0f);
ShowWindow(hwnd, SW_SHOW);
UpdateWindow(hwnd);
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
MSG msg;
while (true)
{
@ -136,13 +183,12 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
TranslateMessage(&msg);
DispatchMessage(&msg);
}
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);
glUseProgram(gpuProgram.mProgram);
glUniformMatrix4fv(gpuProgram.GetLocation("V"), 1, GL_FALSE, identity);
glUniformMatrix4fv(gpuProgram.GetLocation("P"), 1, GL_FALSE, glm::value_ptr(projectionMatrix));
glUniform4fv(gpuProgram.GetLocation("U_AmbientLightColor"), 1,ambientLightColor);
@ -155,6 +201,8 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
glUniform3fv(gpuProgram.GetLocation("U_EyePos"), 1, eyePos);
//left
fboDirectionLight.Bind();
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
lightPos[0] = 0.0f;
lightPos[1] = 1.5f;
lightPos[2] = 0.0f;
@ -165,11 +213,16 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
glUniform1f(gpuProgram.GetLocation("U_DiffuseIntensity"), diffuseIntensity);
glUniform1f(gpuProgram.GetLocation("U_Cutoff"), spotLightCutoff);
glUniformMatrix4fv(gpuProgram.GetLocation("M"), 1, GL_FALSE, glm::value_ptr(model1));
glUniformMatrix4fv(gpuProgram.GetLocation("V"), 1, GL_FALSE, glm::value_ptr(viewMatrix1));
glUniformMatrix4fv(gpuProgram.GetLocation("NM"), 1, GL_FALSE, glm::value_ptr(normalMatrix1));
cube.Bind(gpuProgram.GetLocation("pos"), gpuProgram.GetLocation("texcoord"), gpuProgram.GetLocation("normal"));
cube.Draw();
fboDirectionLight.Unbind();
//middle
fboPointerLight.Bind();
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
lightPos[0] = 0.0f;
lightPos[1] = 3.0f;
lightPos[2] = -6.0f;
@ -180,12 +233,16 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
glUniform1f(gpuProgram.GetLocation("U_DiffuseIntensity"), diffuseIntensity);
glUniform1f(gpuProgram.GetLocation("U_Cutoff"), spotLightCutoff);
glUniformMatrix4fv(gpuProgram.GetLocation("M"), 1, GL_FALSE, glm::value_ptr(model2));
glUniformMatrix4fv(gpuProgram.GetLocation("V"), 1, GL_FALSE, glm::value_ptr(viewMatrix2));
glUniformMatrix4fv(gpuProgram.GetLocation("NM"), 1, GL_FALSE, glm::value_ptr(normalMatrix2));
cube.Bind(gpuProgram.GetLocation("pos"), gpuProgram.GetLocation("texcoord"), gpuProgram.GetLocation("normal"));
cube.Draw();
fboDirectionLight.Unbind();
//right
lightPos[0] = 2.0f;
fboSpotLight.Bind();
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
lightPos[0] = 6.0f;
lightPos[1] = 3.0f;
lightPos[2] = -6.0f;
lightPos[3] = 1.0f;
@ -195,12 +252,35 @@ INT WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _
glUniform1f(gpuProgram.GetLocation("U_DiffuseIntensity"), diffuseIntensity);
glUniform1f(gpuProgram.GetLocation("U_Cutoff"), spotLightCutoff);
glUniformMatrix4fv(gpuProgram.GetLocation("M"), 1, GL_FALSE, glm::value_ptr(model3));
glUniformMatrix4fv(gpuProgram.GetLocation("V"), 1, GL_FALSE, glm::value_ptr(viewMatrix3));
glUniformMatrix4fv(gpuProgram.GetLocation("NM"), 1, GL_FALSE, glm::value_ptr(normalMatrix3));
cube.Bind(gpuProgram.GetLocation("pos"), gpuProgram.GetLocation("texcoord"), gpuProgram.GetLocation("normal"));
cube.Draw();
fboSpotLight.Unbind();
glUseProgram(0);
glFinish();
glFlush();
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glUseProgram(fsqProgram.mProgram);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, fboDirectionLight.GetBuffer("color"));
glUniform1i(fsqProgram.GetLocation("U_MainTexture"), 0);
fsq.DrawToLeftTop(fsqProgram.GetLocation("pos"), fsqProgram.GetLocation("texcoord"));
glBindTexture(GL_TEXTURE_2D, fboSpotLight.GetBuffer("color"));
glUniform1i(fsqProgram.GetLocation("U_MainTexture"), 0);
fsq.DrawToLeftBottom(fsqProgram.GetLocation("pos"), fsqProgram.GetLocation("texcoord"));
glBindTexture(GL_TEXTURE_2D, fboPointerLight.GetBuffer("color"));
glUniform1i(fsqProgram.GetLocation("U_MainTexture"), 0);
fsq.DrawToRightTop(fsqProgram.GetLocation("pos"), fsqProgram.GetLocation("texcoord"));
glFlush();
SwapBuffers(dc);
}
return 0;

3
res/shader/fullscreenquad.vs
View File

@ -1,10 +1,11 @@
attribute vec3 pos;
attribute vec2 texcoord;
varying vec2 V_Texcoord;
void main()
{
vec4 worldPos=vec4(pos,1.0);
V_Texcoord=pos.xy+vec2(0.5,0.5);
V_Texcoord=texcoord;
worldPos.x*=2.0;
worldPos.y*=2.0;
gl_Position=worldPos;

2
shader3.vcxproj
View File

@ -82,6 +82,8 @@
<ClInclude Include="utils.h" />
</ItemGroup>
<ItemGroup>
<None Include="res\shader\fullscreenquad.fs" />
<None Include="res\shader\fullscreenquad.vs" />
<None Include="res\shader\test.fs" />
<None Include="res\shader\test.vs" />
</ItemGroup>

6
shader3.vcxproj.filters
View File

@ -52,5 +52,11 @@
<None Include="res\shader\test.vs">
<Filter>src</Filter>
</None>
<None Include="res\shader\fullscreenquad.fs">
<Filter>src</Filter>
</None>
<None Include="res\shader\fullscreenquad.vs">
<Filter>src</Filter>
</None>
</ItemGroup>
</Project>
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