void onFrame() {
if (camera.isTransformed) {
camera.transform();
}
glViewport(0, 0, width, height);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
cmt.bind(GL_TEXTURE0); {
skyboxProgram.bind(); {
glUniformMatrix4fv(skyboxProgram.uniform("view"), 1, 0, ptr(camera.view));
glUniformMatrix4fv(skyboxProgram.uniform("proj"), 1, 0, ptr(camera.projection));
glUniform1i(skyboxProgram.uniform("cube_texture"), 0);
skyboxMeshBuffer.draw();
} skyboxProgram.unbind();
vec3 totals = rotateBehavior.tick(now()).totals();
cubeModel = glm::mat4();
cubeModel = glm::translate(cubeModel, vec3(12.0,0.0,40.0));
cubeModel = glm::rotate(cubeModel, totals.x, vec3(1.0f,0.0f,0.0f));
cubeModel = glm::rotate(cubeModel, totals.y, vec3(0.0f,1.0f,0.0f));
dragonModel = glm::mat4();
dragonModel = glm::translate(dragonModel, vec3(-12.0,-15.0,40.0));
dragonModel = glm::rotate(dragonModel, totals.y, vec3(0.0f,1.0f,0.0f));
environmentMappingProgram.bind(); {
glUniformMatrix4fv(environmentMappingProgram.uniform("view"), 1, 0, ptr(camera.view));
glUniformMatrix4fv(environmentMappingProgram.uniform("proj"), 1, 0, ptr(camera.projection));
glUniform1i(environmentMappingProgram.uniform("cube_texture"), 0);
//set dragon specific variables and draw dragon
glUniformMatrix4fv(environmentMappingProgram.uniform("model"), 1, 0, ptr(dragonModel));
glUniform4f(environmentMappingProgram.uniform("baseColor"), 0.0, 0.0, 0.1, 1.0);
dragonMeshBuffer.draw();
//set cube specific variables and draw cube
glUniformMatrix4fv(environmentMappingProgram.uniform("model"), 1, 0, ptr(cubeModel));
glUniform4f(environmentMappingProgram.uniform("baseColor"), 0.1, 0.0, 0.0, 1.0);
cubeMeshBuffer.draw();
} environmentMappingProgram.unbind();
} cmt.unbind(GL_TEXTURE0);
}
virtual void redisplay ()
{
static GLuint buf [] = { 0, 0, 0, 0 };
static GLuint counters [4];
counterBuf.setData ( sizeof ( buf ), buf, GL_DYNAMIC_DRAW );
glClear ( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
mat4 mv = mat4 :: rotateZ ( toRadians ( rot.z ) ) * mat4 :: rotateY ( toRadians ( rot.y ) ) * mat4 :: rotateX ( toRadians ( rot.x ) );
mat3 nm = normalMatrix ( mv );
program.bind ();
program.setUniformMatrix ( "mv", mv );
program.setUniformMatrix ( "nm", nm );
mesh -> render ();
program.unbind ();
glFinish ();
counterBuf.getSubData ( 0, sizeof ( buf ), counters );
printf ( "%4d %4d %d %d\n", counters [0], counters [1], counters [2], counters [3] );
}
MyCaveGeneratorTestLoop(Window *w) : SDLLoop(w)
{
cout << "Initializing glew\n";
glewInit();
cout << "Binding program\n";
program.addShader(Shader(GL_VERTEX_SHADER, "functional/phong/shader.vp"));
program.addShader(Shader(GL_FRAGMENT_SHADER, "functional/phong/shader.fp"));
program.link();
program.bind();
cout << "Getting locations of shader parameters\n";
vertexLocation = program.getAttributeLocation("vPosition");
texCoordLocation = program.getAttributeLocation("uv");
vertexColorLocation = program.getAttributeLocation("vColor");
samplerLocation = program.getUniformLocation("image");
modelLocation = program.getUniformLocation("model");
perspectiveLocation= program.getUniformLocation("perspective");
normalLocation = program.getAttributeLocation("Normal");
ambientProductLocation = program.getUniformLocation("ambientProduct");
diffuseProductLocation = program.getUniformLocation("diffuseProduct");
specularProductLocation = program.getUniformLocation("specularProduct");
lightPositionLocation = program.getUniformLocation("LightPosition");
shininessLocation = program.getUniformLocation("shininess");
program.enableAttributeArray(vertexLocation);
program.enableAttributeArray(texCoordLocation);
program.enableAttributeArray(vertexColorLocation);
program.enableAttributeArray(normalLocation);
signal = new PerlinSignal;
signal->addFrequency(2, 0.2);
signal->addFrequency(16, 0.01);
}
//onFrame syncs with the refresh rate of the display (e.g., 60fps). Here we can send information to the GPU to define exactly how the pixels on the window should look.
virtual void onFrame(){
glViewport(0, 0, width, height); //defines the active viewport to match the size of our window
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // clears color and depth info from the viewport
glEnable(GL_DEPTH_TEST);
glDisable(GL_BLEND);
//have the pyramid to rotate in place
m = glm::rotate(m, rx, vec3(1.0f, 0.0f, 0.0f));
m = glm::rotate(m, ry, vec3(0.0f, 1.0f, 0.0f));
//update the view matrix based on the camera's rotation
v = mat4(1.0); //reset to identity
v = glm::rotate(v, cx, vec3(1.0f, 0.0f, 0.0f)); //rotate sum amount around the x-axis
v = glm::rotate(v, cy, vec3(0.0f, 1.0f, 0.0f)); //rotate sum amount around the y-axis
v = glm::translate(v, vec3(0, 0, pz)); //translate the "cursor" forward five units ( = move the camera five units backwards)
// the program.bind() activates our shader program so that we can 1. pass data to it and 2. let it draw to the active viewport in our window
program.bind(); {
glUniformMatrix4fv(program.uniform("m"), 1, 0, ptr(m)); //pass in the model matrix
glUniformMatrix4fv(program.uniform("v"), 1, 0, ptr(v)); //pass in the view matrix
glUniformMatrix4fv(program.uniform("p"), 1, 0, ptr(p)); //pass in the projection matrix
glBindVertexArray(vao); //binds our vertex array object, containing all our data and information about how it's organized and indexed
glDrawElements(GL_TRIANGLES, 12, GL_UNSIGNED_INT, BUFFER_OFFSET(0)); //passes the entire data buffer to the GPU as a set of triangles; that is, read the index array three items at a time.
glBindVertexArray(0);
} program.unbind();
}
void onFrame(){
model = glm::mat4(1.0);
vec3 totals = rotateBehavior.tick(now()).totals();
model = glm::rotate(model, totals.x, vec3(1.0f,0.0f,0.0f));
model = glm::rotate(model, totals.y, vec3(0.0f,1.0f,0.0f));
model = glm::rotate(model, totals.z, vec3(0.0f,0.0f,1.0f));
//draw cube 1 into an offscreen texture
fbo.bind(); {
glViewport(0, 0, fbo.width, fbo.height);
glClearColor(0.1,0.1,0.1,1.0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
draw(model, cubeMeshBuffer1, texture, textureProgram);
} fbo.unbind();
//draw cube 2 with the offscreen texture using phong shading
glViewport(0, 0, width, height);
glClearColor(0.0,0.0,0.0,1.0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
model = glm::mat4(1.0);
model = glm::translate(model, vec3(1.0,0.0,0.0));
model = glm::rotate(model, totals.x, vec3(1.0f,0.0f,0.0f));
model = glm::rotate(model, totals.y, vec3(0.0f,1.0f,0.0f));
model = glm::rotate(model, totals.z, vec3(0.0f,0.0f,1.0f));
draw(model, cubeMeshBuffer2, fbo.texture, phongProgram);
//draw cube 3 - a colored cube
model = mat4(1.0);
model = glm::translate(model, vec3(-1.0,0.0,0.0));
model = glm::rotate(model, -totals.x, vec3(1.0f,0.0f,0.0f));
model = glm::rotate(model, -totals.y, vec3(0.0f,1.0f,0.0f));
model = glm::rotate(model, -totals.z, vec3(0.0f,0.0f,1.0f));
programColor.bind(); {
glUniformMatrix4fv(programColor.uniform("model"), 1, 0, ptr(model));
glUniformMatrix4fv(programColor.uniform("view"), 1, 0, ptr(view));
glUniformMatrix4fv(programColor.uniform("proj"), 1, 0, ptr(proj));
cubeMeshBuffer3.draw();
} programColor.unbind();
}
void uploadFullscreenQuad(const Program & sp) {
sp.bind();
float quad[] = {
-1.0f, 1.0f, 0.0f, 1.0f, // top left corner
-1.0f, -1.0f, 0.0f, 0.0f, // bottom left corner
1.0f, 1.0f, 1.0f, 1.0f,// top right corner
1.0f, -1.0f, 1.0f, 0.0f // bottom right corner
};
sp.uploadData(quad, sizeof(quad));
}
void PrimitiveShape::paint()
{
VertexBuffer* vb = m_vertexbuffer;
// IndexBuffer* ib = m_indexbuffer;
Program* pr = m_program;
if( !vb || !pr )
{
return;
}
size_t vertexcount;
VertexDeclaration* vdecl;
if( !vb->bind( &vertexcount, &vdecl ) )
{
return;
}
// int indexcount;
// if( ib )
// {
// if( !ib->bind( &indexcount ) )
// {
// return;
// }
// }
if( !pr->bind() )
{
return;
}
int ptype = m_type.load( std::memory_order_acquire );
checkerror( Context::Device->SetRenderState(
D3DRS_BLENDOP, m_blendop ) );
checkerror( Context::Device->SetRenderState(
D3DRS_SRCBLEND, m_blendsf ) );
checkerror( Context::Device->SetRenderState(
D3DRS_DESTBLEND, m_blenddf ) );
{
lock_t lock( m_mutex );
checkerror( Context::Device->SetVertexShaderConstantF(
0, m_matrix.m[ 0 ], 4 ) );
}
// checkerror( Context::Device->DrawIndexedPrimitive(
// D3DPRIMITIVETYPE( m_type ),
// 0,
// 0,
// vertexcount,
// 0,
// indexcount / 3 ) );
checkerror( Context::Device->DrawPrimitive(
D3DPRIMITIVETYPE( typetable[ ptype ] ),
0,
UINT( ( vertexcount - poffsettable[ ptype ] )
/ pfactortable[ ptype ] ) ) );
}
virtual void reshape ( int w, int h )
{
GlutWindow::reshape ( w, h );
glViewport ( 0, 0, (GLsizei)w, (GLsizei)h );
mat4 proj = perspective ( 60.0f, (float)w / (float)h, 0.5f, 20.0f ) * lookAt ( eye, vec3 :: zero, vec3 ( 0, 0, 1 ) );
program.bind ();
program.setUniformMatrix ( "proj", proj );
program.setUniformVector ( "eye", eye );
program.setUniformVector ( "light", light );
program.unbind ();
}
void bind_prog_and_attributes(const VertexFormat& vf, const Program& program)
{
program.bind();
for (auto&& vc : vf) {
const auto attrib_loc = program.get_attribute_loc(vc.name);
CHECK_FOR_GL_ERROR;
glEnableVertexAttribArray(attrib_loc);
CHECK_FOR_GL_ERROR;
glVertexAttribPointer(attrib_loc, vc.num_comps, vc.type, vc.normalize, (GLsizei)vf.stride(), (const void*)vc.offset);
CHECK_FOR_GL_ERROR;
}
}
virtual void idle ()
{
angle = 4 * getTime ();
light.x = 8*cos ( angle );
light.y = 8*sin ( 1.4 * angle );
light.z = 8 + 0.5 * sin ( angle / 3 );
program.bind ();
program.setUniformVector ( "eye", eye );
program.setUniformVector ( "light", light );
program.unbind ();
GlutWindow::idle (); // for glutPostRedisplay ();
}
void draw(mat4& model, MeshBuffer& mb, Texture& t, Program& p) {
p.bind(); {
glUniformMatrix4fv(p.uniform("model"), 1, 0, ptr(model));
glUniformMatrix4fv(p.uniform("view"), 1, 0, ptr(view));
glUniformMatrix4fv(p.uniform("proj"), 1, 0, ptr(proj));
t.bind(GL_TEXTURE0); {
glUniform1i(p.uniform("tex0"), 0);
mb.draw();
} t.unbind(GL_TEXTURE0);
} p.unbind();
}
MyArray3DLayeredHeightfieldTestLoop(Window *w) : SDLLoop(w)
{
cout << "Initializing glew\n";
glewInit();
cout << "Binding program\n";
program.addShader(Shader(GL_VERTEX_SHADER, "functional/phong/shader.vp"));
program.addShader(Shader(GL_FRAGMENT_SHADER, "functional/phong/shader.fp"));
program.link();
program.bind();
cout << "Getting locations of shader parameters\n";
vertexLocation = program.getAttributeLocation("vPosition");
texCoordLocation = program.getAttributeLocation("uv");
vertexColorLocation = program.getAttributeLocation("vColor");
samplerLocation = program.getUniformLocation("image");
modelLocation = program.getUniformLocation("model");
perspectiveLocation= program.getUniformLocation("perspective");
normalLocation = program.getAttributeLocation("Normal");
ambientProductLocation = program.getUniformLocation("ambientProduct");
diffuseProductLocation = program.getUniformLocation("diffuseProduct");
specularProductLocation = program.getUniformLocation("specularProduct");
lightPositionLocation = program.getUniformLocation("LightPosition");
shininessLocation = program.getUniformLocation("shininess");
program.enableAttributeArray(vertexLocation);
program.enableAttributeArray(texCoordLocation);
program.enableAttributeArray(vertexColorLocation);
program.enableAttributeArray(normalLocation);
signal = new PerlinSignal;
signal->addFrequency(2, 0.5);
signal->addFrequency(16, 0.01);
generator = new MyLayeredVoxeledHeightfield(signal);
voxels = new Array3D<bool>(128, 128, 128);
generator->populateArray(voxels, 128);
for (int j = 0; j<5; j++) make_hole(*voxels);
for (int i =0; i<10; i++) (*voxels).copy(erode(*voxels));
adapter = new Array3DLayeredHeightfieldAdapter(*voxels);
adapter->generate();
h = adapter->getField();
cout << "Number of levels " << h->levelCount() << endl;
}
void PrimitiveShape::paint()
{
VertexBuffer* vb = m_vertexbuffer;
// IndexBuffer* ib = m_indexbuffer;
Program* pr = m_program;
if( !vb || !pr )
{
return;
}
size_t vertexcount;
VertexDeclaration* vdecl;
if( !vb->bind( &vertexcount, &vdecl ) )
{
return;
}
// int indexcount;
// if( ib )
// {
// if( !ib->bind( &indexcount ) )
// {
// return;
// }
// }
int worldmatrixpos;
if( !pr->bind( &worldmatrixpos ) )
{
return;
}
int ptype = m_type.load( std::memory_order_acquire );
glBlendEquation( m_blendop );
checkerror();
glBlendFunc( m_blendsf, m_blenddf );
checkerror();
if( worldmatrixpos != -1 )
{
lock_t lock( m_mutex );
glUniformMatrix4fv( worldmatrixpos, 1, false, m_matrix );
}
// checkerror( Context::Device->DrawIndexedPrimitive(
// D3DPRIMITIVETYPE( m_type ),
// 0,
// 0,
// vertexcount,
// 0,
// indexcount / 3 ) );
glDrawArrays( typetable[ ptype ], 0, GLsizei( vertexcount ) );
}
MyVoxeledTerrainTestLoop(Window *w) : SDLLoop(w)
{
cout << "Initializing glew\n";
glewInit();
cout << "Binding program\n";
program.addShader(Shader(GL_VERTEX_SHADER, "functional/scene/shader.vp"));
program.addShader(Shader(GL_FRAGMENT_SHADER, "functional/scene/shader.fp"));
program.link();
program.bind();
cout << "Getting locations of shader parameters\n";
vertexLocation = program.getAttributeLocation("vPosition");
texCoordLocation = program.getAttributeLocation("uv");
vertexColorLocation = program.getAttributeLocation("vColor");
samplerLocation = program.getUniformLocation("image");
modelLocation = program.getUniformLocation("model");
perspectiveLocation= program.getUniformLocation("perspective");
normalLocation = program.getAttributeLocation("Normal");
ambientProductLocation = program.getUniformLocation("ambientProduct");
diffuseProductLocation = program.getUniformLocation("diffuseProduct");
specularProductLocation = program.getUniformLocation("specularProduct");
lightPositionLocation = program.getUniformLocation("LightPosition");
shininessLocation = program.getUniformLocation("shininess");
cout << program.getAttributeLocation("vPosition")<< endl;
cout << program.getAttributeLocation("uv")<< endl;
cout << program.getAttributeLocation("vColor")<< endl;
cout << program.getUniformLocation("image")<< endl;
cout << program.getUniformLocation("model")<< endl;
cout << program.getUniformLocation("perspective")<< endl;
cout << program.getAttributeLocation("Normal")<< endl;
cout << program.getUniformLocation("ambientProduct")<< endl;
cout << program.getUniformLocation("diffuseProduct")<< endl;
cout << program.getUniformLocation("specularProduct")<< endl;
cout << program.getUniformLocation("LightPosition")<< endl;
cout << program.getUniformLocation("shininess")<< endl;
cout << "Normal location: " << normalLocation << endl;
program.enableAttributeArray(vertexLocation);
program.enableAttributeArray(texCoordLocation);
program.enableAttributeArray(vertexColorLocation);
program.enableAttributeArray(normalLocation);
}
void onFrame(){
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
program.bind(); {
glUniformMatrix4fv(program.uniform("model"), 1, 0, ptr(model));
glUniformMatrix4fv(program.uniform("view"), 1, 0, ptr(view));
glUniformMatrix4fv(program.uniform("proj"), 1, 0, ptr(proj));
glUniform1f(program.uniform("bloom"), bloomAmt);
glUniform1i(program.uniform("tex0"), 0);
texture.bind(GL_TEXTURE0); {
mb1.draw();
} texture.unbind(GL_TEXTURE0);
} program.unbind();
}
void onFrame() {
float ratio = float(height) / float(width);
float c = cosf(angle);
float s = sinf(angle);
vec4 rot = scale * vec4(c, -s * ratio, s, c * ratio);
planetProgram.bind(); {
glUniform4fv(planetProgram.uniform("rot"), 1, ptr(rot));
glUniform1f(planetProgram.uniform("zoom"), zoom);
glUniform1f(planetProgram.uniform("power"), power);
glUniform1i(planetProgram.uniform("cube_texture"), 0);
cubemap[which].bind(GL_TEXTURE0); {
mb.draw();
} cubemap[which].unbind(GL_TEXTURE0);
} planetProgram.unbind();
}
void onFrame() {
val += 0.01;
glViewport(0, 0, width, height);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// updateModel();
program.bind(); {
glUniformMatrix4fv(program.uniform("model"), 1, 0, ptr(model));
glUniformMatrix4fv(program.uniform("view"), 1, 0, ptr(view));
glUniformMatrix4fv(program.uniform("proj"), 1, 0, ptr(proj));
glUniform1f(program.uniform("in_val"), val);
mb.draw();
} program.unbind();
}
void onFrame(){
if (camera.isTransformed) { //i.e. if you've pressed any of the keys to move or rotate the camera around
camera.transform();
}
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
program.bind(); {
glUniformMatrix4fv(program.uniform("model"), 1, 0, ptr(model));
glUniformMatrix4fv(program.uniform("view"), 1, 0, ptr(camera.view));
glUniformMatrix4fv(program.uniform("proj"), 1, 0, ptr(camera.projection));
texture.bind(GL_TEXTURE0); {
mb1.drawPoints();
} texture.unbind(GL_TEXTURE0);
} program.unbind();
}
int main(void)
{
GLFWwindow* window;
// Initialize the library
if (!glfwInit())
return -1;
// Activate supersampling
glfwWindowHint(GLFW_SAMPLES, 8);
// Ensure that we get at least a 3.2 context
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
// On apple we have to load a core profile with forward compatibility
#ifdef __APPLE__
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
#endif
// Create a windowed mode window and its OpenGL context
window = glfwCreateWindow(640, 480, "Hello World", NULL, NULL);
if (!window)
{
glfwTerminate();
return -1;
}
// Make the window's context current
glfwMakeContextCurrent(window);
#ifndef __APPLE__
glewExperimental = true;
GLenum err = glewInit();
if(GLEW_OK != err)
{
/* Problem: glewInit failed, something is seriously wrong. */
fprintf(stderr, "Error: %s\n", glewGetErrorString(err));
}
glGetError(); // pull and savely ignonre unhandled errors like GL_INVALID_ENUM
fprintf(stdout, "Status: Using GLEW %s\n", glewGetString(GLEW_VERSION));
#endif
int major, minor, rev;
major = glfwGetWindowAttrib(window, GLFW_CONTEXT_VERSION_MAJOR);
minor = glfwGetWindowAttrib(window, GLFW_CONTEXT_VERSION_MINOR);
rev = glfwGetWindowAttrib(window, GLFW_CONTEXT_REVISION);
printf("OpenGL version recieved: %d.%d.%d\n", major, minor, rev);
printf("Supported OpenGL is %s\n", (const char*)glGetString(GL_VERSION));
printf("Supported GLSL is %s\n", (const char*)glGetString(GL_SHADING_LANGUAGE_VERSION));
// Initialize the VAO
// A Vertex Array Object (or VAO) is an object that describes how the vertex
// attributes are stored in a Vertex Buffer Object (or VBO). This means that
// the VAO is not the actual object storing the vertex data,
// but the descriptor of the vertex data.
VertexArrayObject VAO;
VAO.init();
VAO.bind();
// Initialize the VBO with the vertices data
// A VBO is a data container that lives in the GPU memory
VBO.init();
V.resize(2,6);
V <<
0, 0.5, -0.5, 0.1, 0.6, -0.4,
0.5, -0.5, -0.5, 0.6, -0.4, -0.4;
VBO.update(V);
// Initialize the OpenGL Program
// A program controls the OpenGL pipeline and it must contains
// at least a vertex shader and a fragment shader to be valid
Program program;
const GLchar* vertex_shader =
"#version 150 core\n"
"in vec2 position;"
"void main()"
"{"
" gl_Position = vec4(position, 0.0, 1.0);"
"}";
const GLchar* fragment_shader =
"#version 150 core\n"
"out vec4 outColor;"
"uniform vec4 triangleColor;"
"void main()"
"{"
" outColor = vec4(triangleColor);"
"}";
// Compile the two shaders and upload the binary to the GPU
// Note that we have to explicitly specify that the output "slot" called outColor
// is the one that we want in the fragment buffer (and thus on screen)
program.init(vertex_shader,fragment_shader,"outColor");
program.bind();
// The vertex shader wants the position of the vertices as an input.
// The following line connects the VBO we defined above with the position "slot"
// in the vertex shader
program.bindVertexAttribArray("position",VBO);
// Register the keyboard callback
glfwSetKeyCallback(window, key_callback);
// Register the mouse callback
glfwSetMouseButtonCallback(window, mouse_button_callback);
// Update viewport
glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
// Loop until the user closes the window
while (!glfwWindowShouldClose(window))
{
// Bind your VAO (not necessary if you have only one)
VAO.bind();
// Bind your program
program.bind();
// Clear the framebuffer
glClearColor(0.5f, 0.5f, 0.5f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// Enable blending test
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
// Draw a triangle (red)
glUniform4f(program.uniform("triangleColor"), 1.0f, 0.0f, 0.0f, 1.0f);
glDrawArrays(GL_TRIANGLES, 0, 3);
// Draw a triangle (green)
glUniform4f(program.uniform("triangleColor"), 0.0f, 1.0f, 0.0f, 0.5f);
glDrawArrays(GL_TRIANGLES, 3, 3);
// Swap front and back buffers
glfwSwapBuffers(window);
// Poll for and process events
glfwPollEvents();
}
// Deallocate opengl memory
program.free();
VAO.free();
VBO.free();
// Deallocate glfw internals
glfwTerminate();
return 0;
}
void OpenGL3Impl::renderMesh(const model::ViewPort& viewPort,
model::Entity* cameraEntity,
model::Mesh* mesh,
model::Material* material,
const Transform& transform) {
Program* program = nullptr;
model::Material* defaultMaterial = MaterialFactory::getDefault();
// Make sure we have the render data
if (mesh->renderData.is_null()) {
mesh->renderData = ImplData();
}
ImplData* data = &mesh->renderData.as<ImplData>();
data->createFrom(mesh);
// Let's keep the default material compiled
buildMaterial(defaultMaterial);
// Get the camera from the camera entity
model::Camera* camera = cameraEntity->findComponent<model::Camera>();
// Resolve the material to use for rendering
if (material == nullptr) {
material = defaultMaterial;
}
else {
buildMaterial(material);
}
// Resolve the program to use for rendering
program = material->program;
if (program == nullptr) {
program = defaultMaterial->program;
}
if (camera != nullptr && material != nullptr && program != nullptr) {
glViewport(viewPort.x, viewPort.y, viewPort.width, viewPort.height);
Matrix lookAt = Transform2Matrix(invert(cameraEntity->getTransform()));
Matrix mat = Transform2Matrix ( transform );
Matrix matNormals = MatrixForNormals ( mat );
Matrix matProjection = camera->getProjection();
if (mPicking) {
//matProjection = mPickingMatrix * camera->getProjection();
}
Matrix matGeometry = matProjection * lookAt * mat;
Vector3 viewVector = Vector3(0.0f, 1.0f, 0.0) * lookAt;
program->bind();
// Set the uniforms
program->setUniform("un_ProjectionMatrix", matProjection);
program->setUniform("un_LookatMatrix", lookAt );
program->setUniform("un_ModelviewMatrix", mat);
program->setUniform("un_NormalMatrix", matNormals);
program->setUniform("un_Matrix", matGeometry);
program->setUniform("un_ViewVector", viewVector);
GLenum polyType = GL_INVALID_ENUM;
switch ( mesh->type )
{
case model::Mesh::TRIANGLES:
polyType = GL_TRIANGLES;
break;
default:
break;
}
if (polyType != GL_INVALID_ENUM) {
int textureLevels = 0;
if (material->texture != nullptr) {
textureLevels++;
glActiveTexture(GL_TEXTURE0);
program->setUniform("un_Sampler0", 0);
material->texture->bind();
if (material->texture1 != nullptr) {
textureLevels++;
glActiveTexture(GL_TEXTURE1);
program->setUniform("un_Sampler1", 1);
material->texture1->bind();
if (material->texture2 != nullptr) {
textureLevels++;
glActiveTexture(GL_TEXTURE2);
program->setUniform("un_Sampler2", 2);
material->texture2->bind();
}
}
}
program->setUniform("un_TextureLevels", (float)textureLevels);
program->setUniform("un_Material.diffuse", material->diffuse, true);
if (material->shadeless == false) {
program->setUniform("un_Material.ambient", material->ambient, false);
program->setUniform("un_Material.specular", material->specular, false);
program->setUniform("un_Material.emission", material->emission, false);
program->setUniform("un_Material.shininess", material->shininess);
}
program->setUniform("un_Material.isShadeless", material->shadeless);
// For now, hardcode the light values
program->setUniform("un_Light.diffuse", Color::WHITE, false);
program->setUniform("un_Light.ambient", Color(80, 80, 80, 255), false);
program->setUniform("un_Light.specular", Color::WHITE, false);
program->setUniform("un_Light.position", Vector3(0, 0, 1) );
program->setUniform("un_Light.direction", Vector3(0.1f, 0, -1) );
data->bind(program, material->texture != nullptr);
glDrawElements ( polyType, mesh->indexCount, GL_UNSIGNED_INT, 0 );
eglGetError();
}
program->unbind();
}
glUseProgram(0);
}
void postexAttrs(const Program & sp) {
sp.bind();
sp.addAttrib("position", 2, 4, 0);
sp.addAttrib("texcoord", 2, 4, 2);
}
void posAttrs(const Program & sp) {
sp.bind();
sp.addAttrib("position", 2, 2, 0);
}