void onDraw(Graphics& g){
g.pointSize(renderMode+0.5);
g.color(RGB(1));
mesh.colors().reset();
switch (renderMode) {
case 0:
// do it on the CPU:
for (int k=0; k<N; k++) {
for (int j=0; j<N; j++) {
for (int i=0; i<N; i++) {
Color color;
data.read_interp(color.components, i,j,k);
mesh.color(color);
}}}
g.draw(mesh);
break;
case 1:
// use 3D texcoords:
tex.bind();
g.draw(mesh);
tex.unbind();
break;
case 2:
// use shader:
shader.begin();
tex.bind();
g.draw(mesh);
tex.unbind();
shader.end();
break;
default:;
}
}
inline void OmniStereoGraphicsRenderer::onDrawOmni(OmniStereo& omni) {
graphics().error("start onDraw");
mShader.begin();
mOmni.uniforms(mShader);
graphics().pushMatrix(graphics().MODELVIEW);
onDraw(graphics());
graphics().popMatrix(graphics().MODELVIEW);
mShader.end();
}
inline bool OmniStereoGraphicsRenderer::onCreate() {
mOmni.onCreate();
Shader vert, frag;
vert.source(OmniStereo::glsl() + vertexCode(), Shader::VERTEX).compile();
vert.printLog();
frag.source(fragmentCode(), Shader::FRAGMENT).compile();
frag.printLog();
mShader.attach(vert).attach(frag).link();
mShader.printLog();
mShader.begin();
mShader.uniform("lighting", 0.0);
mShader.uniform("texture", 0.0);
mShader.end();
return true;
}
void run()
{
if(!initialize())
shutdown("Failed to initialize");
if(!loadContent())
shutdown("Failed to load resources");
Mesh cubeMesh = Mesh::genUnitColoredCube();
MeshBuffer cubeBuffer(cubeMesh);
Model cube(cubeBuffer);
Mesh waterMesh = Mesh::genUnitColoredPlane(Color(0.57f, 0.63f, 0.98f));
MeshBuffer waterBuffer(waterMesh);
Model water(waterBuffer);
BufferObject quadVbo;
float quadVertices[] = {
-1.0f, -1.0f, 0.0f, 0.0f,
+1.0f, -1.0f, 1.0f, 0.0f,
+1.0f, +1.0f, 1.0f, 1.0f,
+1.0f, +1.0f, 1.0f, 1.0f,
-1.0f, +1.0f, 0.0f, 1.0f,
-1.0f, -1.0f, 0.0f, 0.0f
};
quadVbo.create(GL_ARRAY_BUFFER, GL_STATIC_DRAW, sizeof(quadVertices), quadVertices);
Mesh gridMesh;
for(int i = 0; i <= 8; ++i)
{
float f = (i / 8.0) * 2.0f - 1.0f;
int j = gridMesh.getPositionCount();
gridMesh.addPosition(f * 3.0f, 0.0f, -3.0f);
gridMesh.addPosition(f * 3.0f, 0.0f, +3.0f);
gridMesh.addPosition(-3.0f, 0.0f, f * 3.0f);
gridMesh.addPosition(+3.0f, 0.0f, f * 3.0f);
gridMesh.addColor(Colors::White);
gridMesh.addColor(Colors::White);
gridMesh.addColor(Colors::White);
gridMesh.addColor(Colors::White);
gridMesh.addIndex(j + 0); gridMesh.addIndex(j + 1);
gridMesh.addIndex(j + 2); gridMesh.addIndex(j + 3);
}
MeshBuffer gridBuffer(gridMesh);
Model grid(gridBuffer);
VertexArray vao;
vao.create();
vao.bind();
mat4 perspectiveMatrix = glm::perspective(45.0f, windowWidth / float(windowHeight), 0.05f, 50.0f);
// The geometry to be refracted and reflected are stored in these
// In addition to RGB values, the world-space height is stored in the alpha-channel
// of the refraction texture.
// Fresnel equations is used to blend between the two textures
RenderTexture refractionRT(windowWidth, windowHeight);
RenderTexture reflectionRT(windowWidth, windowHeight);
renderer.setClearColor(0.55f, 0.45f, 0.45f, 1.0f);
renderer.setClearDepth(1.0);
Timer timer;
timer.start();
double renderTime = 0.0;
while(context.isOpen())
{
timer.step();
double time = timer.getElapsedTime();
update(time, timer.getDelta());
double renderStart = timer.getElapsedTime();
MatrixStack viewMatrix;
viewMatrix.push();
viewMatrix.translate(0.0f, 0.0f, -3.0f);
viewMatrix.rotateX(xAxisRotation);
viewMatrix.rotateY(yAxisRotation);
renderer.setCullState(CullStates::CullNone);
renderer.setDepthTestState(DepthTestStates::LessThanOrEqual);
colorShader.begin();
colorShader.setUniform("projection", perspectiveMatrix);
cube.pushTransform();
cube.translate(0.0f, 0.0f, 0.0f);
cube.scale(0.5f);
// Render the geometry to be refracted, store result in rt
refractionRT.begin();
renderer.clearColorAndDepth();
colorShader.setUniform("view", viewMatrix.top());
cube.draw(GL_TRIANGLES);
grid.draw(GL_LINES);
refractionRT.end();
// Render the geometry to be reflected, store result in rt
reflectionRT.begin();
renderer.clearColorAndDepth();
viewMatrix.push();
viewMatrix.scale(1.0f, -1.0f, 1.0f); // Reflect about xz-plane
colorShader.setUniform("view", viewMatrix.top());
cube.draw(GL_TRIANGLES);
viewMatrix.pop();
reflectionRT.end();
colorShader.end();
cube.popTransform();
// Render the water with the previous reflection/refraction texture
waterShader.begin();
waterShader.setUniform("time", time);
glActiveTexture(GL_TEXTURE0 + 0);
refractionRT.bindTexture();
glActiveTexture(GL_TEXTURE0 + 1);
reflectionRT.bindTexture();
glActiveTexture(GL_TEXTURE0 + 2);
waterNormals.bind();
//waterShader.setUniform("view", viewMatrix.top());
waterShader.setUniform("refraction_tex", 0);
waterShader.setUniform("reflection_tex", 1);
waterShader.setUniform("water_normals_tex", 2);
//waterShader.setUniform("light0_pos", vec3(0.0f, 1.0f, 0.0f));
//waterShader.setUniform("light0_col", vec3(1.0f, 0.8f, 0.5f));
//waterShader.setUniform("ambient", vec3(67.0f/255.0f, 66.0f/255.0f, 63.0f/255.0f));
quadVbo.bind();
waterShader.setAttributefv("position", 2, 4, 0);
waterShader.setAttributefv("texel", 2, 4, 2);
glDrawArrays(GL_TRIANGLES, 0, 6);
quadVbo.unbind();
reflectionRT.unbindTexture();
refractionRT.unbindTexture();
waterNormals.unbind();
waterShader.end();
glActiveTexture(GL_TEXTURE0 + 0);
// Render unmirrored scene
//colorShader.begin();
//renderer.clearColorAndDepth();
//renderer.setCullState(CullStates::CullNone);
//renderer.setBlendState(BlendStates::AlphaBlend);
//renderer.setDepthTestState(DepthTestStates::LessThanOrEqual);
//colorShader.setUniform("projection", perspectiveMatrix);
//colorShader.setUniform("view", viewMatrix.top());
//cube.pushTransform();
//cube.translate(0.0f, 0.4f, 0.0f);
//cube.scale(0.5f);
//cube.draw(GL_TRIANGLES);
/*grid.pushTransform();
grid.translate(0.0f, -0.5f, 0.0f);
grid.draw(GL_LINES);
grid.popTransform();*/
// Draw mirrored scene to a rendertarget
/*rt.begin();
renderer.clearColorAndDepth();
viewMatrix.push();
viewMatrix.scale(1.0f, -1.0f, 1.0f);
colorShader.setUniform("view", viewMatrix.top());
cube.draw(GL_TRIANGLES);
cube.popTransform();
viewMatrix.pop();
rt.end();*/
// Enable stencil testing and mask out a section containing the water mesh
//glEnable(GL_STENCIL_TEST);
//glStencilFunc(GL_ALWAYS, 1, 0xFF); // Set any stencil to 1
//glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE);
//glStencilMask(0xFF); // Write to stencil buffer
//glDepthMask(GL_FALSE); // Don't write to depth buffer
//glClear(GL_STENCIL_BUFFER_BIT); // Clear stencil buffer (0 by default)
//// Draw water mesh
//water.pushTransform();
//water.scale(3.0f);
//water.draw(GL_TRIANGLES);
//water.popTransform();
//colorShader.end();
//// Draw previous rendertarget as a quad masked into the water plane
//glStencilFunc(GL_EQUAL, 1, 0xFF); // Pass test if stencil value is 1
//glStencilMask(0x00); // Don't write anything to stencil buffer
//glDepthMask(GL_TRUE);
//glDisable(GL_STENCIL_TEST);
viewMatrix.pop();
context.display();
renderTime = timer.getElapsedTime() - renderStart;
if(renderTime < 0.013)
context.sleep(0.013 - renderTime);
if(checkGLErrors(std::cerr))
{
std::cin.get();
context.close();
}
}
waterNormals.dispose();
colorShader.dispose();
waterShader.dispose();
vao.dispose();
context.dispose();
}
int main(int argc, char** argv)
{
SDL_Window* window;
SDL_GLContext ctx;
GLuint vao;
if(!initSDL(&window, &ctx) || !initGLEW())
{
return false;
}
// Create camera
Camera camera(glm::radians(60.0f),
static_cast<float>(width)/static_cast<float>(height),
0.000001f,
1000.0f);
camera.getTransform()->setPosition(0.0f,0.0f,5.0f);
VertexShader vs;
FragmentShader fs;
ShaderProgram shaderProg;
WavefrontMeshFactory factory;
Mesh* mesh = factory.load("../../wreck/assets/uvcube.obj");
if(!vs.load("../../wreck/assets/lambert.vs")) std::cout << "Vertex Shader error." << std::endl;
if(!fs.load("../../wreck/assets/lambert.fs")) std::cout << "Fragment shader error." << std::endl;
Texture texture;
texture.load("../../wreck/assets/uvpattern.dds");
Light light(glm::vec3(5.0f, 5.0f, 5.0f), glm::vec3(1.0f, 1.0f, 1.0f));
light.setIntensity(1.0f);
std::cout << "Linking..." << std::endl;
shaderProg.setVertexShader(&vs);
shaderProg.setFragmentShader(&fs);
shaderProg.link();
//glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
glEnable(GL_DEPTH_TEST);
glClearColor(0.0f, 0.0f, 0.0f, 1.0f); // Black
Uint32 ticks = SDL_GetTicks();
bool running = true;
while(running)
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
SDL_Event event;
while(SDL_PollEvent(&event))
{
Uint32 elapsed = SDL_GetTicks()-ticks;
ticks = SDL_GetTicks();
switch (event.type)
{
case SDL_KEYDOWN:
keyboardCameraControl(event, camera, elapsed);
break;
case SDL_KEYUP:
// if escape is pressed, quit
if (event.key.keysym.sym == SDLK_ESCAPE)
running = false; // set status to 1 to exit main loop
break;
case SDL_MOUSEMOTION:
mouseCameraControl(event, window, camera, elapsed);
break;
case SDL_QUIT:
running = false;
break;
}
}
glm::vec3 lightPos = light.getTransform()->getPosition();
glm::vec3 lightColor = light.getColor() * light.getIntensity();
glm::vec4 diffuse = glm::vec4(1.0f, 1.0f, 1.0f, 1.0f);
glm::mat4 m = glm::mat4(1.0f);
glm::mat4 v = camera.getViewMatrix();
glm::mat4 p = camera.getProjectionMatrix();
glm::mat4 mvp = p*v*m;
// Begin drawing
shaderProg.begin();
mesh->use();
texture.use();
shaderProg.setUniformValue(0, mvp);
shaderProg.setUniformValue(1, m);
shaderProg.setUniformValue(2, v);
shaderProg.setUniformValue(3, lightPos);
shaderProg.setUniformValue(4, lightColor);
//shaderProg.setUniformValue(1, diffuse);
glDrawElements(GL_TRIANGLES, mesh->indices.size(), GL_UNSIGNED_INT, 0);
shaderProg.end();
SDL_GL_SwapWindow(window);
}
SDL_GL_DeleteContext(ctx);
SDL_DestroyWindow(window);
SDL_Quit();
return 0;
}
bool onFrame(){
gl.clearColor(0.1, 0.1, 0.1, 1);
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
gl.viewport(0,0, width(), height());
gl.matrixMode(gl.PROJECTION);
gl.loadMatrix(Matrix4d::perspective(45, aspect(), 0.1, 100));
gl.matrixMode(gl.MODELVIEW);
gl.loadMatrix(Matrix4d::lookAt(Vec3d(0,0,4), Vec3d(0,0,0), Vec3d(0,1,0)));
gl.disable(gl.LIGHTING);
// shaderprogram.begin();
// shaderprogram.uniform("tex0", 0);
// GraphicsGL::gl_error("shader");
// tex.bind(0);
// gl.begin(gl.QUADS);
// gl.color(1, 1, 1);
// gl.texCoord(0, 0);
// gl.vertex(0, 0, 0);
// gl.texCoord(0, 1);
// gl.vertex(0, 1, 0);
// gl.texCoord(1, 1);
// gl.vertex(1, 1, 0);
// gl.texCoord(1, 0);
// gl.vertex(1, 0, 0);
// gl.end();
// tex.unbind(0);
// shaderprogram.end();
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0); // Uses default lighting parameters
glEnable(GL_DEPTH_TEST);
glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE);
glEnable(GL_NORMALIZE);
glColorMaterial(GL_FRONT_AND_BACK, GL_DIFFUSE);
const GLfloat pos[]={ 1.f, 1.f, 2.f, 0.f };
glLightfv(GL_LIGHT0, GL_POSITION, pos);
// gl.enable(gl.DEPTH_TEST);
//// gl.enable(gl.NORMALIZE);
// light.twoSided(true);
// light.dir(1.f, 1.f, 2.f);
//
// light();
// material();
// glColorMaterial(GL_FRONT_AND_BACK, GL_DIFFUSE);
gl.pushMatrix();
// rotate it around the y axis
gl.rotate(a, 0.f,1.f,0.f);
a += 0.5;
// scale the whole asset to fit into our view frustum
float tmp = scene_max[0]-scene_min[0];
tmp = al::max(scene_max[1] - scene_min[1],tmp);
tmp = al::max(scene_max[2] - scene_min[2],tmp);
tmp = 2.f / tmp;
gl.scale(tmp);
// center the model
gl.translate( -scene_center );
shaderprogram.begin();
shaderprogram.uniform("tex0", 1);
Graphics::error("tex0");
tex.bind(1);
scene_list.draw();
tex.unbind(1);
shaderprogram.end();
gl.popMatrix();
return true;
}
