@Override
public void prepare(int color, float alpha, int fbufWidth, int fbufHeight) {
ctx.checkGLError("colorShader.prepare start");
boolean wasntAlreadyActive = super.prepare(fbufWidth, fbufHeight);
if (wasntAlreadyActive || color != lastColor || alpha != lastAlpha) {
flush();
glUniform1f(uAlpha, alpha);
lastAlpha = alpha;
float a = (float) ((color >> 24) & 0xff) / 255;
float r = (float) ((color >> 16) & 0xff) / 255;
float g = (float) ((color >> 8) & 0xff) / 255;
float b = (float) ((color >> 0) & 0xff) / 255;
glUniform4f(uColor, r, g, b, a);
lastColor = color;
ctx.checkGLError("colorShader.prepare end");
}
}
@Override
protected void display() {
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glClearDepth(1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
MatrixStack modelMatrix = new MatrixStack();
modelMatrix.setMatrix(viewPole.calcMatrix());
Vec4 lightDirCameraSpace = Mat4.mul(modelMatrix.top(), lightDirection);
glUseProgram(whiteDiffuseColor.theProgram);
glUniform3(whiteDiffuseColor.dirToLightUnif, lightDirCameraSpace.fillAndFlipBuffer(vec4Buffer));
glUseProgram(vertexDiffuseColor.theProgram);
glUniform3(
vertexDiffuseColor.dirToLightUnif, lightDirCameraSpace.fillAndFlipBuffer(vec4Buffer));
glUseProgram(0);
{
modelMatrix.push();
// Render the ground plane.
{
modelMatrix.push();
glUseProgram(whiteDiffuseColor.theProgram);
glUniformMatrix4(
whiteDiffuseColor.modelToCameraMatrixUnif,
false,
modelMatrix.top().fillAndFlipBuffer(mat4Buffer));
Mat3 normMatrix = new Mat3(modelMatrix.top());
glUniformMatrix3(
whiteDiffuseColor.normalModelToCameraMatrixUnif,
false,
normMatrix.fillAndFlipBuffer(mat3Buffer));
glUniform4f(whiteDiffuseColor.lightIntensityUnif, 1.0f, 1.0f, 1.0f, 1.0f);
planeMesh.render();
glUseProgram(0);
modelMatrix.pop();
}
// Render the Cylinder
{
modelMatrix.push();
modelMatrix.applyMatrix(objtPole.calcMatrix());
if (drawColoredCyl) {
glUseProgram(vertexDiffuseColor.theProgram);
glUniformMatrix4(
vertexDiffuseColor.modelToCameraMatrixUnif,
false,
modelMatrix.top().fillAndFlipBuffer(mat4Buffer));
Mat3 normMatrix = new Mat3(modelMatrix.top());
glUniformMatrix3(
vertexDiffuseColor.normalModelToCameraMatrixUnif,
false,
normMatrix.fillAndFlipBuffer(mat3Buffer));
glUniform4f(vertexDiffuseColor.lightIntensityUnif, 1.0f, 1.0f, 1.0f, 1.0f);
cylinderMesh.render("lit-color");
} else {
glUseProgram(whiteDiffuseColor.theProgram);
glUniformMatrix4(
whiteDiffuseColor.modelToCameraMatrixUnif,
false,
modelMatrix.top().fillAndFlipBuffer(mat4Buffer));
Mat3 normMatrix = new Mat3(modelMatrix.top());
glUniformMatrix3(
whiteDiffuseColor.normalModelToCameraMatrixUnif,
false,
normMatrix.fillAndFlipBuffer(mat3Buffer));
glUniform4f(whiteDiffuseColor.lightIntensityUnif, 1.0f, 1.0f, 1.0f, 1.0f);
cylinderMesh.render("lit");
}
glUseProgram(0);
modelMatrix.pop();
}
modelMatrix.pop();
}
}