///////////////////////////////////////////////////////////////////////////////
// Called to draw scene
void RenderScene(void)
{
// Clear the window with current clearing color
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
modelViewMatrix.PushMatrix();
M3DMatrix44f mCamera;
cameraFrame.GetCameraMatrix(mCamera);
modelViewMatrix.MultMatrix(mCamera);
// Reflection step... draw cube upside down, the floor
// blended on top of it
if(nStep == 5) {
glDisable(GL_CULL_FACE);
modelViewMatrix.PushMatrix();
modelViewMatrix.Scale(1.0f, -1.0f, 1.0f);
modelViewMatrix.Translate(0.0f, 2.0f, 0.0f);
modelViewMatrix.Rotate(35.0f, 0.0f, 1.0f, 0.0f);
RenderBlock();
modelViewMatrix.PopMatrix();
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
RenderFloor();
glDisable(GL_BLEND);
}
modelViewMatrix.PushMatrix();
// Draw normally
modelViewMatrix.Rotate(35.0f, 0.0f, 1.0f, 0.0f);
RenderBlock();
modelViewMatrix.PopMatrix();
// If not the reflection pass, draw floor last
if(nStep != 5)
RenderFloor();
modelViewMatrix.PopMatrix();
// Flush drawing commands
glutSwapBuffers();
}
/*!****************************************************************************
@Function RenderScene
@Return bool true if no error occured
@Description Main rendering loop function of the program. The shell will
call this function every frame.
eglSwapBuffers() will be performed by PVRShell automatically.
PVRShell will also manage important OS events.
Will also manage relevent OS events. The user has access to
these events through an abstraction layer provided by PVRShell.
******************************************************************************/
bool OGLES2ParticleSystem::RenderScene()
{
HandleInput();
UpdateParticles();
UpdateFramerateCounter();
float time_delta = PVRShellGetTime() / 10000.0f;
PVRTVec3 vFrom = PVRTVec3((float) sin(time_delta) * 50.0f, 30.0f, (float) cos(time_delta) * 50.0f);
m_mView = PVRTMat4::LookAtRH(vFrom, PVRTVec3(0.0f, 5.0f, 0.0f), PVRTVec3(0.0f, 1.0f, 0.0f));
m_mViewProjection = m_mProjection * m_mView;
// Clear colour and depth buffers
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// Enables depth testing
glEnable(GL_DEPTH_TEST);
// Render floor
RenderFloor();
for (unsigned int i=0; i < g_cuiNumSpheres; i++)
RenderSphere(g_caSpheres[i].aPosition, g_caSpheres[i].fRadius);
// Render particles
RenderParticles();
// Display info text.
char lower_buffer[64];
unsigned int numParticles = m_pParticleSystem->GetNumberOfParticles();
sprintf(lower_buffer, "No. of Particles: %d", numParticles);
m_Print3D.DisplayDefaultTitle("Particle System", NULL, ePVRTPrint3DSDKLogo);
m_Print3D.Print3D(2.0f, 90.0f, 1.0f, 0xFFFFFFFF, "No. of Particles: %d", numParticles);
m_Print3D.Flush();
return true;
}
/*!****************************************************************************
@Function RenderScene
@Return bool true if no error occured
@Description Main rendering loop function of the program. The shell will
call this function every frame.
eglSwapBuffers() will be performed by PVRShell automatically.
PVRShell will also manage important OS events.
Will also manage relevent OS events. The user has access to
these events through an abstraction layer provided by PVRShell.
******************************************************************************/
bool OGLESParticles::RenderScene()
{
int i;
PVRTMat4 mRotY;
// Clear colour and depth buffers
myglClearColor(f2vt(0.0f), f2vt(0.0f), f2vt(0.0f), f2vt(1.0f));
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// Enables depth testing
glEnable(GL_DEPTH_TEST);
// Modify per-frame variables controlling the particle mouvements.
float fSpeedCtrl = (float) (PVRTFSIN(m_fRot*0.01f)+1.0f)/2.0f;
float fStopNo = 0.8f;
float fStep = 0.1f;
if(fSpeedCtrl > fStopNo)
fStep = 0.0f;
// Generate particles as needed.
if((m_i32NumParticles < (int) g_ui32MaxParticles) && (fSpeedCtrl <= fStopNo))
{
int num_to_gen = (int) (RandPositiveFloat()*(g_ui32MaxParticles/100.0));
if(num_to_gen == 0)
num_to_gen = 1;
for(i = 0; (i < num_to_gen) && (m_i32NumParticles < (int) g_ui32MaxParticles); ++i)
SpawnParticle(&m_Particles[m_i32NumParticles++]);
}
// Build rotation matrix around axis Y.
mRotY = PVRTMat4::RotationY(f2vt((m_fRot2*PVRT_PIf)/180.0f));
for(i = 0; i < m_i32NumParticles; ++i)
{
// Transform particle with rotation matrix
m_sParticleVTXPSBuf[i].x = VERTTYPEMUL(mRotY.f[ 0], m_Particles[i].m_fPosition.x) +
VERTTYPEMUL(mRotY.f[ 4], m_Particles[i].m_fPosition.y) +
VERTTYPEMUL(mRotY.f[ 8], m_Particles[i].m_fPosition.z) +
mRotY.f[12];
m_sParticleVTXPSBuf[i].y = VERTTYPEMUL(mRotY.f[ 1], m_Particles[i].m_fPosition.x) +
VERTTYPEMUL(mRotY.f[ 5], m_Particles[i].m_fPosition.y) +
VERTTYPEMUL(mRotY.f[ 9], m_Particles[i].m_fPosition.z) +
mRotY.f[13];
m_sParticleVTXPSBuf[i].z = VERTTYPEMUL(mRotY.f[ 2], m_Particles[i].m_fPosition.x) +
VERTTYPEMUL(mRotY.f[ 6], m_Particles[i].m_fPosition.y) +
VERTTYPEMUL(mRotY.f[10], m_Particles[i].m_fPosition.z) +
mRotY.f[14];
m_sParticleVTXPSBuf[i].fSize = m_Particles[i].m_fSize;
m_sNormalColour[i].r = vt2b(m_Particles[i].m_fColour.x);
m_sNormalColour[i].g = vt2b(m_Particles[i].m_fColour.y);
m_sNormalColour[i].b = vt2b(m_Particles[i].m_fColour.z);
m_sNormalColour[i].a = (unsigned char)255;
m_sReflectColour[i].r = vt2b(VERTTYPEMUL(m_Particles[i].m_fColour.x, g_fFactor));
m_sReflectColour[i].g = vt2b(VERTTYPEMUL(m_Particles[i].m_fColour.y, g_fFactor));
m_sReflectColour[i].b = vt2b(VERTTYPEMUL(m_Particles[i].m_fColour.z, g_fFactor));
m_sReflectColour[i].a = (unsigned char)255;
}
glBindBuffer(GL_ARRAY_BUFFER, m_i32VertVboID);
glBufferData(GL_ARRAY_BUFFER, sizeof(SVtxPointSprite)*m_i32NumParticles, m_sParticleVTXPSBuf,GL_DYNAMIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, m_i32ColAVboID);
glBufferData(GL_ARRAY_BUFFER, sizeof(SColors)*m_i32NumParticles, m_sNormalColour,GL_DYNAMIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, m_i32ColBVboID);
glBufferData(GL_ARRAY_BUFFER, sizeof(SColors)*m_i32NumParticles, m_sReflectColour,GL_DYNAMIC_DRAW);
// clean up render states
glDisable(GL_BLEND);
glDisable(GL_TEXTURE_2D);
glEnable(GL_LIGHTING);
// Draw floor.
// Save modelview matrix
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
myglRotate(f2vt(-m_fRot), f2vt(0.0f), f2vt(1.0f), f2vt(0.0f));
// setup render states
glDisable(GL_LIGHTING);
glEnable(GL_TEXTURE_2D);
glDisable(GL_CULL_FACE);
glEnable(GL_BLEND);
// Set texture and texture environment
glBindTexture(GL_TEXTURE_2D, m_ui32FloorTexName);
glBlendFunc(GL_ONE, GL_ONE);
// Render floor
RenderFloor();
// clean up render states
glDisable(GL_BLEND);
glDisable(GL_TEXTURE_2D);
glEnable(GL_LIGHTING);
glPopMatrix();
// Render particles reflections.
// set up render states
glDisable(GL_LIGHTING);
glEnable(GL_TEXTURE_2D);
glDepthFunc(GL_ALWAYS);
glDisable(GL_CULL_FACE);
glEnable(GL_BLEND);
glBlendFunc(GL_ONE, GL_ONE);
myglTexEnv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glBindTexture(GL_TEXTURE_2D, m_ui32TexName);
// Set model view matrix
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
myglScale(f2vt(1.0f), f2vt(-1.0f), f2vt(1.0f));
myglTranslate(f2vt(0.0f), f2vt(0.01f), f2vt(0.0f));
glEnable(GL_POINT_SPRITE_OES);
if(((int)(m_i32NumParticles * 0.5f)) > 0)
RenderParticle(((int)(m_i32NumParticles*0.5f)),true);
glPopMatrix();
// Render particles.
// Sets the model view matrix
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
if(m_i32NumParticles > 0)
RenderParticle(m_i32NumParticles,false);
glPopMatrix();
glDisable(GL_POINT_SPRITE_OES);
PVRTVec3 Force = PVRTVec3(f2vt(0.0f), f2vt(0.0f), f2vt(0.0f));
Force.x = f2vt(1000.0f*(float)PVRTFSIN(m_fRot*0.01f));
for(i = 0; i < m_i32NumParticles; ++i)
{
/*
Move the particle.
If the particle exceeds its lifetime, create a new one in its place.
*/
if(m_Particles[i].Step(f2vt(fStep), Force))
SpawnParticle(&m_Particles[i]);
}
// clean up render states
glDisable(GL_BLEND);
glDisable(GL_TEXTURE_2D);
glEnable(GL_LIGHTING);
// Increase rotation angles
m_fRot += 1;
m_fRot2 = m_fRot + 36;
// Unbinds the vertex buffer if we are using OpenGL ES 1.1
glBindBuffer(GL_ARRAY_BUFFER, 0);
// Display info text.
m_Print3D.DisplayDefaultTitle("Particles", "Using point sprites", ePVRTPrint3DSDKLogo);
m_Print3D.Flush();
return true;
}
int main() {
// msaa
glfwWindowHint(GLFW_SAMPLES, 4);
GLFWwindow * window = initWindow(windowWidth, windowHeight);
if (!window) {
glfwTerminate();
return -1;
}
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
glfwSetKeyCallback(window, key_callback);
glfwSetCursorPosCallback(window, cursor_callback);
glfwSetScrollCallback(window, scroll_callback);
glEnable(GL_DEPTH_TEST);
// prepare texture loading library(devil)
init_texture_loading();
//plane
Shader simpleDepthShader("data/shaders/shadow_mapping_depth.vs", "data/shaders/shadow_mapping_depth.frag");
Model ourModel("data/models/nanosuit/nanosuit.obj");
GLfloat planeVertices[] = {
// Positions // Normals // Texture Coords
2.0f, 0.0f, 2.0f, 0.0f, 1.0f, 0.0f, 2.0f, 0.0f,
-2.0f, 0.0f, -2.0f, 0.0f, 1.0f, 0.0f, 0.0f, 2.0f,
-2.0f, 0.0f, 2.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f,
2.0f, 0.0f, 2.0f, 0.0f, 1.0f, 0.0f, 2.0f, 0.0f,
2.0f, 0.0f, -2.0f, 0.0f, 1.0f, 0.0f, 2.0f, 2.0f,
-2.0f, 0.0f, -2.0f, 0.0f, 1.0f, 0.0f, 0.0f, 2.0f
};
// Setup plane VAO xzhs
GLuint planeVBO;
GLuint woodTexture;
GLuint rockTexture;
glGenVertexArrays(1, &planeVAO);
glGenBuffers(1, &planeVBO);
glBindVertexArray(planeVAO);
glBindBuffer(GL_ARRAY_BUFFER, planeVBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(planeVertices), &planeVertices, GL_STATIC_DRAW);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(GLfloat), (GLvoid*)0);
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(GLfloat), (GLvoid*)(3 * sizeof(GLfloat)));
glEnableVertexAttribArray(2);
glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 8 * sizeof(GLfloat), (GLvoid*)(6 * sizeof(GLfloat)));
glBindVertexArray(0);
// Load textures
woodTexture = load_texture("data/textures/wood.png");
rockTexture = load_texture("data/textures/rock.jpg");
// Configure depth map FBO
const GLuint SHADOW_WIDTH = 1024, SHADOW_HEIGHT = 1024;
GLuint depthMapFBO;
glGenFramebuffers(1, &depthMapFBO);
// - Create depth texture
GLuint depthMap;
glGenTextures(1, &depthMap);
glBindTexture(GL_TEXTURE_2D, depthMap);
glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT, SHADOW_WIDTH, SHADOW_HEIGHT, 0, GL_DEPTH_COMPONENT, GL_FLOAT, NULL);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
GLfloat borderColor[] = { 1.0f, 1.0f, 1.0f, 1.0f };
glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_BORDER_COLOR, borderColor);
glBindFramebuffer(GL_FRAMEBUFFER, depthMapFBO);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, depthMap, 0);
glDrawBuffer(GL_NONE);
glReadBuffer(GL_NONE);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glClearColor(0.1f, 0.1f, 0.1f, 1.0f);
//xzhe
Shader shaders("data/shaders/shader.vert", "data/shaders/shader.frag");
Shader colorShaders("data/shaders/shaderColorUniform.vert",
"data/shaders/shaderColorUniform.frag");
Shader domeShaders("data/shaders/dome.vert", "data/shaders/dome.frag");
Shader lightShaders("data/shaders/lightShader.vert", "data/shaders/lightShader.frag");
Shader spriteShaders("data/shaders/spriteShader.vert", "data/shaders/spriteShader.frag");
Shader starShaders("data/shaders/spriteShader.vert", "data/shaders/stars.frag");
std::cout << "Loading models..." << std::endl;
Model dome("data/models/geodesic_dome.obj");
Model landscape("data/models/landscape.obj");
std::cout << "Models loaded!" << std::endl;
std::cout << "Loading extra textures..." << std::endl;
GLuint domeColor = load_texture("data/textures/sky.png", true, GL_MIRRORED_REPEAT, GL_MIRRORED_REPEAT);
GLuint domeGlow = load_texture("data/textures/glow.png", true, GL_MIRRORED_REPEAT, GL_MIRRORED_REPEAT);
Sprite sun("data/textures/sun.png");
Sprite moon("data/textures/moon.png");
Sprite star("data/textures/star.png");
// enable blending!
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
// enable msaa(multisample anti-aliasing)
glEnable(GL_MULTISAMPLE);
std::vector<glm::mat4> starModels(256);
for (auto& m : starModels) {
m = glm::rotate(m, glm::radians(rand_rotate()), glm::vec3(1.0f, 0.0f, 0.0f));
m = glm::rotate(m, glm::radians(rand_rotate()), glm::vec3(0.0f, 1.0f, 0.0f));
m = glm::rotate(m, glm::radians(rand_rotate()), glm::vec3(0.0f, 0.0f, 1.0f));
m = glm::translate(m, glm::vec3(5.0f, 0.0f, 0.0f));
m = glm::rotate(m, glm::radians(rand_rotate()), glm::vec3(1.0f, 0.0f, 0.0f));
m = glm::rotate(m, glm::radians(rand_rotate()), glm::vec3(0.0f, 1.0f, 0.0f));
}
double last_frame = glfwGetTime();
while (!glfwWindowShouldClose(window)) {
double current_frame = glfwGetTime();
double delta_time = current_frame - last_frame;
last_frame = current_frame;
glfwPollEvents();
do_movement(delta_time);
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glViewport(0, 0, windowWidth, windowHeight);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glm::mat4 projection = glm::perspective(glm::radians(camera.Zoom), (float)windowWidth / (float)windowHeight, 0.1f, 100.0f);
glm::mat4 view = camera.GetViewMatrix();
// sun
float sunAngle = current_frame * 30.0f;
glm::mat4 sunModel;
sunModel = glm::rotate(sunModel, glm::radians(sunAngle), glm::vec3(0.0f, 0.0f, 1.0f));
sunModel = glm::translate(sunModel, glm::vec3(3.5f, 0.0f, 0.0f));
glm::vec3 sunPos = glm::vec3(sunModel * glm::vec4(0.0f, 0.0f, 0.0f, 1.0f));
// moon
float moonAngle = sunAngle + 180.0f;
glm::mat4 moonModel;
moonModel = glm::rotate(moonModel, glm::radians(moonAngle), glm::vec3(0.0f, 0.0f, 1.0f));
moonModel = glm::translate(moonModel, glm::vec3(3.5f, 0.0f, 0.0f));
// directional light
DirLight dirLight(-sunPos, glm::vec3(0.8f, 0.8f, 0.8f));
// point light
GLfloat light_pos_angle = glm::radians(60.0f * current_frame);
glm::vec3 light_pos(1.2f + sin(light_pos_angle), 0.0f, 2.0f + cos(light_pos_angle));
glm::vec3 lightColor(1.0f, 1.0f, 1.0f);
lightColor.r = sin(current_frame * 2.0f);
lightColor.g = sin(current_frame * 0.7f);
lightColor.b = sin(current_frame * 1.3f);
PointLight pointLight(light_pos, lightColor * 0.5f);
// spot light
SpotLight spotLight(camera.Position, camera.Front,
glm::vec3((GLfloat)flash_light_on));
shaders.Use();
shaders.SetUniform("view", view);
shaders.SetUniform("projection", projection);
shaders.SetUniform("ViewPos", camera.Position);
dirLight.SetUniforms(shaders, "dirLight");
pointLight.SetUniforms(shaders, "pointLights[0]");
shaders.SetUniform("pointLightCount", 0);
spotLight.SetUniforms(shaders, "spotLight");
shaders.SetUniform("material.shininess", 16.0f);
colorShaders.Use();
colorShaders.SetUniform("view", view);
colorShaders.SetUniform("projection", projection);
colorShaders.SetUniform("ViewPos", camera.Position);
dirLight.SetUniforms(colorShaders, "dirLight");
//pointLight.SetUniforms(colorShaders, "pointLights[0]");
colorShaders.SetUniform("pointLightCount", 0);
spotLight.SetUniforms(colorShaders, "spotLight");
colorShaders.SetUniform("material.shininess", 1.8f);
// make the dome and landscape pinned
glm::mat4 pinnedView = glm::lookAt(glm::vec3(0.0f, 1.0f, 0.0f),
glm::vec3(0.0f, 1.0f, 0.0f) + camera.Front,
glm::vec3(0.0f, 1.0f, 0.0f));
if (enable_stars) {
// stars
starShaders.Use();
starShaders.SetUniform("view", view);
starShaders.SetUniform("projection", projection);
starShaders.SetUniform("groundBases[0]", 1.0f, 0.0f, 0.0f);
starShaders.SetUniform("groundBases[1]", 0.0f, 0.0f, 1.0f);
starShaders.SetUniform("groundUp", 0.0f, 1.0f, 0.0f);
starShaders.SetUniform("sunPos", sunPos);
for (const auto& m : starModels) {
glm::mat4 model = glm::rotate(glm::mat4(), glm::radians(sunAngle), glm::vec3(0.0f, 0.0f, 1.0f)) * m;
starShaders.SetUniform("model", model);
star.Draw(starShaders);
}
}
colorShaders.Use();
glm::mat4 lmodel;
lmodel = glm::scale(lmodel, glm::vec3(3.0f, 3.0f, 3.0f));
lmodel = glm::translate(lmodel, glm::vec3(0.0f, 0.1f, 0.0f));
lmodel = glm::rotate(lmodel, glm::radians(30.0f), glm::vec3(0.0f, 1.0f, 0.0f));
glm::mat3 normalMatrix = glm::mat3(glm::transpose(glm::inverse(lmodel)));
colorShaders.SetUniform("view", view);
colorShaders.SetUniform("model", lmodel);
colorShaders.SetUniform("normalMatrix", normalMatrix);
colorShaders.SetUniform("Color", glm::vec4(0.93f, 0.79f, 0.69f, 1.0f));
landscape.Draw(colorShaders, false);
domeShaders.Use();
domeShaders.SetUniform("view", view);
domeShaders.SetUniform("projection", projection);
glActiveTexture(GL_TEXTURE7);
glBindTexture(GL_TEXTURE_2D, domeColor);
glActiveTexture(GL_TEXTURE8);
glBindTexture(GL_TEXTURE_2D, domeGlow);
domeShaders.SetUniform("domeColor", 7);
domeShaders.SetUniform("glow", 8);
glm::mat4 dmodel;
dmodel = glm::scale(dmodel, glm::vec3(4.0f, 4.0f, 4.0f));
domeShaders.SetUniform("model", dmodel);
domeShaders.SetUniform("sunPos", sunPos);
dome.Draw(domeShaders, false);
// cheating billboarding to make the sun and moon always face the camera
glm::mat4 sunModelView = view * sunModel;
for (int i = 0; i < 3; ++i)
for (int j = 0; j < 3; ++j)
sunModelView[i][j] = (GLfloat)(i == j);
sunModelView = glm::scale(sunModelView, glm::vec3(0.5f, 0.5f, 0.5f));
glm::mat4 moonModelView = view * moonModel;
for (int i = 0; i < 3; ++i)
for (int j = 0; j < 3; ++j)
moonModelView[i][j] = (GLfloat)(i == j);
moonModelView = glm::scale(moonModelView, glm::vec3(0.5f, 0.5f, 0.5f));
spriteShaders.Use();
spriteShaders.SetUniform("view", glm::mat4());
spriteShaders.SetUniform("projection", projection);
spriteShaders.SetUniform("model", sunModelView);
sun.Draw(spriteShaders);
spriteShaders.SetUniform("model", moonModelView);
moon.Draw(spriteShaders);
//xzhs
// Set texture samples
shaders.Use();
glActiveTexture(GL_TEXTURE13);
glBindTexture(GL_TEXTURE_2D, woodTexture);
glActiveTexture(GL_TEXTURE14);
glBindTexture(GL_TEXTURE_2D, rockTexture);
glActiveTexture(GL_TEXTURE15);
glBindTexture(GL_TEXTURE_2D, depthMap);
shaders.SetUniform("material.texture_diffuse1", 14);
shaders.SetUniform("material.texture_specular1", 14);
shaders.SetUniform("shadowMap", 15);
// 1. Render depth of scene to texture (from light's perspective)
// - Get light projection/view matrix.
glm::mat4 lightProjection, lightView;
glm::mat4 lightSpaceMatrix;
GLfloat near_plane = 1.0f, far_plane = 7.5f;
lightProjection = glm::ortho(-10.0f, 10.0f, -10.0f, 10.0f, near_plane, far_plane);
lightView = glm::lookAt(sunPos, glm::vec3(0.0f), glm::vec3(1.0));
lightSpaceMatrix = lightProjection * lightView;
// - now render scene from light's point of view
simpleDepthShader.Use();
simpleDepthShader.SetUniform("lightSpaceMatrix", lightSpaceMatrix);
glViewport(0, 0, SHADOW_WIDTH, SHADOW_HEIGHT);
glBindFramebuffer(GL_FRAMEBUFFER, depthMapFBO);
glClear(GL_DEPTH_BUFFER_BIT);
RenderFloor(simpleDepthShader);
RenderCubes(simpleDepthShader);
glm::mat4 nmodel;
nmodel = glm::translate(nmodel, glm::vec3(0.1f, 0.3f, -0.5f));
nmodel = glm::rotate(nmodel, glm::radians(70.0f), glm::vec3(0.0f, 1.0f, 0.0f));
nmodel = glm::scale(nmodel, glm::vec3(0.05f, 0.05f, 0.05f));
simpleDepthShader.SetUniform("model", nmodel);
ourModel.Draw(simpleDepthShader);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
// 2. Render scene as normal
glViewport(0, 0, windowWidth, windowHeight);
//glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
shaders.Use();
shaders.SetUniform("projection", projection);
shaders.SetUniform("view", view);
shaders.SetUniform("ViewPos", camera.Position);
// Set light uniforms
// PointLight sunPointLight(sunPos, glm::vec3(0.02f, 0.02f, 0.02f), glm::vec3(1.0f, 1.0f, 1.0f), glm::vec3(0.5f, 0.5f, 0.5f));
// sunPointLight.SetUniforms(shaders, "pointLights[0]");
// shaders.SetUniform("pointLightCount", 0);
dirLight.SetUniforms(shaders, "dirLight");
shaders.SetUniform("pointLightCount", 0);
shaders.SetUniform("lightSpaceMatrix", lightSpaceMatrix);
shaders.SetUniform("material.texture_diffuse1", 14);
shaders.SetUniform("material.texture_specular1", 14);
shaders.SetUniform("shadowMap", 15);
RenderFloor(shaders);
shaders.SetUniform("material.texture_diffuse1", 13);
shaders.SetUniform("material.texture_specular1", 13);
RenderCubes(shaders);
shaders.SetUniform("model", nmodel);
ourModel.Draw(shaders);
//xzhe
glfwSwapBuffers(window);
}
glfwTerminate();
return 0;
}
void Render(float dt)
{
static unsigned int frameIndex = 0;
frameIndex++;
ovrFrameTiming timing = ovrHmd_BeginFrame(s_hmd, 0);
// ovrSensorState ss = ovrHmd_GetSensorState(s_hmd, timing.ScanoutMidpointSeconds);
// TODO: Use this for head tracking...
// TODO: Use player height from SDK
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
// render into fbo
glBindFramebuffer(GL_FRAMEBUFFER, s_fbo);
// TODO: enable this when we have more complex rendering.
glEnable(GL_DEPTH_TEST);
glDisable(GL_CULL_FACE);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
static float t = 0.0;
t += dt;
// clear render target
glViewport(0, 0, s_renderTargetSize.w, s_renderTargetSize.h);
glClearColor(s_clearColor.x, s_clearColor.y, s_clearColor.z, s_clearColor.w);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
for (int i = 0; i < 2; i++)
{
ovrEyeType eye = s_hmdDesc.EyeRenderOrder[i];
ovrPosef pose = ovrHmd_BeginEyeRender(s_hmd, eye);
glViewport(s_eyeTexture[eye].Header.RenderViewport.Pos.x,
s_eyeTexture[eye].Header.RenderViewport.Pos.y,
s_eyeTexture[eye].Header.RenderViewport.Size.w,
s_eyeTexture[eye].Header.RenderViewport.Size.h);
Quatf q(pose.Orientation.x, pose.Orientation.y, pose.Orientation.z, pose.Orientation.w);
Vector3f p(pose.Position.x, pose.Position.y, pose.Position.z);
Matrixf cameraMatrix = Matrixf::QuatTrans(q, s_cameraPos);
Matrixf viewCenter = cameraMatrix.OrthoInverse();
// let ovr compute projection matrix, cause it's hard.
ovrMatrix4f ovrProj = ovrMatrix4f_Projection(s_eyeRenderDesc[eye].Fov, 0.1f, 10000.0f, true);
// convert to abaci matrix
Matrixf projMatrix = Matrixf::Rows(Vector4f(ovrProj.M[0][0], ovrProj.M[0][1], ovrProj.M[0][2], ovrProj.M[0][3]),
Vector4f(ovrProj.M[1][0], ovrProj.M[1][1], ovrProj.M[1][2], ovrProj.M[1][3]),
Vector4f(ovrProj.M[2][0], ovrProj.M[2][1], ovrProj.M[2][2], ovrProj.M[2][3]),
Vector4f(ovrProj.M[3][0], ovrProj.M[3][1], ovrProj.M[3][2], ovrProj.M[3][3]));
// use EyeRenderDesc.ViewAdjust to do eye offset.
Matrixf viewMatrix = viewCenter * Matrixf::Trans(Vector3f(s_eyeRenderDesc[eye].ViewAdjust.x,
s_eyeRenderDesc[eye].ViewAdjust.y,
s_eyeRenderDesc[eye].ViewAdjust.z));
// compute model matrix for terminal
const float kTermScale = 0.001f;
const Vector3f termOrigin(-2 * kFeetToMeters, 6.75f * kFeetToMeters, -2.5 * kFeetToMeters);
Matrixf modelMatrix = Matrixf::ScaleQuatTrans(Vector3f(kTermScale, -kTermScale, kTermScale),
Quatf::AxisAngle(Vector3f(0, 1, 0), 0),
termOrigin);
RenderBegin();
RenderFloor(projMatrix, viewMatrix, 0.0f);
RenderTextBegin(projMatrix, viewMatrix, modelMatrix);
for (int j = 0; j < win_get_text_count(); j++)
{
gb::Text* text = (gb::Text*)win_get_text(j);
if (text)
{
RenderText(text->GetQuadVec());
}
}
RenderTextEnd();
RenderEnd();
ovrHmd_EndEyeRender(s_hmd, eye, pose, &s_eyeTexture[eye]);
}
ovrHmd_EndFrame(s_hmd);
}
