private void initVertexArray(GL3 gl3) {
gl3.glGenVertexArrays(1, vertexArrayName);
gl3.glBindVertexArray(vertexArrayName.get(0));
{
gl3.glBindBuffer(GL_ARRAY_BUFFER, bufferName.get(Buffer.VERTEX));
{
int stride = (2 + 3) * Float.BYTES;
int offset = 0 * Float.BYTES;
gl3.glEnableVertexAttribArray(Semantic.Attr.POSITION);
gl3.glVertexAttribPointer(Semantic.Attr.POSITION, 2, GL_FLOAT, false, stride, offset);
offset = 2 * Float.BYTES;
gl3.glEnableVertexAttribArray(Semantic.Attr.COLOR);
gl3.glVertexAttribPointer(Semantic.Attr.COLOR, 3, GL_FLOAT, false, stride, offset);
}
gl3.glBindBuffer(GL_ARRAY_BUFFER, 0);
gl3.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, bufferName.get(Buffer.ELEMENT));
}
gl3.glBindVertexArray(0);
checkError(gl3, "initVao");
}
private boolean initBuffer(GL3 gl3) {
FloatBuffer vertexBuffer = GLBuffers.newDirectFloatBuffer(vertexData);
gl3.glGenBuffers(1, bufferName);
gl3.glBindBuffer(GL_ARRAY_BUFFER, bufferName.get(0));
gl3.glBufferData(GL_ARRAY_BUFFER, vertexSize, vertexBuffer, GL_STATIC_DRAW);
gl3.glBindBuffer(GL_ARRAY_BUFFER, 0);
BufferUtils.destroyDirectBuffer(vertexBuffer);
return checkError(gl3, "initBuffer");
}
@Override
public void init(GLAutoDrawable glad) {
GL3 gl3 = glad.getGL().getGL3();
try {
shaders.add(
GLSLHelpers.createShader(gl3, getClass(), GL3.GL_VERTEX_SHADER, "glsl/simple_vs"));
shaders.add(
GLSLHelpers.createShader(gl3, getClass(), GL3.GL_FRAGMENT_SHADER, "glsl/simple_fs"));
program = GLSLHelpers.createProgram(gl3, shaders);
gl3.glGenVertexArrays(1, VAO, 0);
gl3.glBindVertexArray(VAO[0]);
gl3.glGenBuffers(1, VBO, 0);
gl3.glBindBuffer(GL3.GL_ARRAY_BUFFER, VBO[0]);
FloatBuffer buffer = GLBuffers.newDirectFloatBuffer(TRIANGLE);
gl3.glBufferData(GL3.GL_ARRAY_BUFFER, buffer.capacity() * 4, buffer, GL3.GL_STATIC_DRAW);
gl3.glEnableVertexAttribArray(0);
gl3.glVertexAttribPointer(0, 2, GL3.GL_FLOAT, false, 0, 0);
gl3.glBindVertexArray(0);
} catch (Throwable t) {
t.printStackTrace();
}
}
private boolean initVertexArray(GL3 gl3) {
gl3.glGenVertexArrays(1, vertexArrayName);
gl3.glBindVertexArray(vertexArrayName.get(0));
{
gl3.glBindBuffer(GL_ARRAY_BUFFER, bufferName.get(0));
gl3.glVertexAttribPointer(Semantic.Attr.POSITION, 2, GL_FLOAT, false, Vertex_v2fv2f.SIZE, 0);
gl3.glVertexAttribPointer(
Semantic.Attr.TEXCOORD, 2, GL_FLOAT, false, Vertex_v2fv2f.SIZE, Vec2.SIZE);
gl3.glBindBuffer(GL_ARRAY_BUFFER, 0);
gl3.glEnableVertexAttribArray(Semantic.Attr.POSITION);
gl3.glEnableVertexAttribArray(Semantic.Attr.TEXCOORD);
}
gl3.glBindVertexArray(0);
return checkError(gl3, "initVertexArray");
}
private boolean initVertexArray(GL3 gl3) {
gl3.glGenVertexArrays(1, vertexArrayName);
gl3.glBindVertexArray(vertexArrayName.get(0));
{
gl3.glBindBuffer(GL_ARRAY_BUFFER, bufferName.get(Buffer.VERTEX));
gl3.glVertexAttribPointer(
Semantic.Attr.POSITION, 2, GL_FLOAT, false, glf.Vertex_v2fv2f.SIZE, 0);
gl3.glVertexAttribPointer(
Semantic.Attr.TEXCOORD, 2, GL_FLOAT, false, glf.Vertex_v2fv2f.SIZE, Vec2.SIZE);
gl3.glBindBuffer(GL_ARRAY_BUFFER, 0);
gl3.glEnableVertexAttribArray(Semantic.Attr.POSITION);
gl3.glEnableVertexAttribArray(Semantic.Attr.TEXCOORD);
gl3.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, bufferName.get(Buffer.ELEMENT));
}
gl3.glBindVertexArray(0);
return true;
}
private boolean initBuffer(GL3 gl3) {
ShortBuffer elementBuffer = GLBuffers.newDirectShortBuffer(elementData);
FloatBuffer vertexBuffer = GLBuffers.newDirectFloatBuffer(vertexData);
IntBuffer uniformBufferOffset = GLBuffers.newDirectIntBuffer(1);
gl3.glGenBuffers(Buffer.MAX, bufferName);
gl3.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, bufferName.get(Buffer.ELEMENT));
gl3.glBufferData(GL_ELEMENT_ARRAY_BUFFER, elementSize, elementBuffer, GL_STATIC_DRAW);
gl3.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
gl3.glBindBuffer(GL_ARRAY_BUFFER, bufferName.get(Buffer.VERTEX));
gl3.glBufferData(GL_ARRAY_BUFFER, vertexSize, vertexBuffer, GL_STATIC_DRAW);
gl3.glBindBuffer(GL_ARRAY_BUFFER, 0);
gl3.glGetIntegerv(GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, uniformBufferOffset);
int uniformBlockSize = Math.max(Mat4.SIZE, uniformBufferOffset.get(0));
gl3.glBindBuffer(GL_UNIFORM_BUFFER, bufferName.get(Buffer.TRANSFORM));
gl3.glBufferData(GL_UNIFORM_BUFFER, uniformBlockSize, null, GL_DYNAMIC_DRAW);
gl3.glBindBuffer(GL_UNIFORM_BUFFER, 0);
BufferUtils.destroyDirectBuffer(elementBuffer);
BufferUtils.destroyDirectBuffer(vertexBuffer);
BufferUtils.destroyDirectBuffer(uniformBufferOffset);
return checkError(gl3, "initBuffer");
}
private void initBuffers(GL3 gl3) {
FloatBuffer vertexBuffer = GLBuffers.newDirectFloatBuffer(vertexData);
ShortBuffer elementBuffer = GLBuffers.newDirectShortBuffer(elementData);
gl3.glGenBuffers(Buffer.MAX, bufferName);
gl3.glBindBuffer(GL_ARRAY_BUFFER, bufferName.get(Buffer.VERTEX));
{
gl3.glBufferData(GL_ARRAY_BUFFER, vertexSize, vertexBuffer, GL_STATIC_DRAW);
}
gl3.glBindBuffer(GL_ARRAY_BUFFER, 0);
gl3.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, bufferName.get(Buffer.ELEMENT));
{
gl3.glBufferData(GL_ELEMENT_ARRAY_BUFFER, elementSize, elementBuffer, GL_STATIC_DRAW);
}
gl3.glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
BufferUtils.destroyDirectBuffer(vertexBuffer);
BufferUtils.destroyDirectBuffer(elementBuffer);
checkError(gl3, "initBuffers");
}
@Override
protected boolean render(GL gl) {
GL3 gl3 = (GL3) gl;
{
gl3.glBindBuffer(GL_UNIFORM_BUFFER, bufferName.get(Buffer.TRANSFORM));
ByteBuffer pointer =
gl3.glMapBufferRange(
GL_UNIFORM_BUFFER, 0, Mat4.SIZE, GL_MAP_WRITE_BIT | GL_MAP_INVALIDATE_BUFFER_BIT);
Mat4 projection = glm.perspective_((float) Math.PI * 0.25f, 4.0f / 3.0f, 0.1f, 100.0f);
Mat4 model = new Mat4(1.0f);
pointer.asFloatBuffer().put(projection.mul(viewMat4()).mul(model).toFa_());
gl3.glUnmapBuffer(GL_UNIFORM_BUFFER);
}
gl3.glDrawBuffer(GL_BACK);
gl3.glViewport(0, 0, windowSize.x, windowSize.y);
gl3.glDisable(GL_FRAMEBUFFER_SRGB);
clearColor.put(new float[] {1.0f, 0.5f, 0.0f, 1.0f}).rewind();
gl3.glClearBufferfv(GL_COLOR, 0, clearColor);
gl3.glUseProgram(programName);
gl3.glDisable(GL_FRAMEBUFFER_SRGB);
gl3.glActiveTexture(GL_TEXTURE0);
gl3.glBindTexture(GL_TEXTURE_2D, textureName.get(0));
gl3.glBindBufferBase(
GL_UNIFORM_BUFFER, Semantic.Uniform.TRANSFORM0, bufferName.get(Buffer.TRANSFORM));
gl3.glBindVertexArray(vertexArrayName.get(0));
gl3.glDrawElementsInstancedBaseVertex(GL_TRIANGLES, elementCount, GL_UNSIGNED_SHORT, 0, 1, 0);
return true;
}