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");
}
@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();
}
}
@Override
public void display(GLAutoDrawable glad) {
GL3 gl3 = glad.getGL().getGL3();
gl3.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
gl3.glClear(GL3.GL_COLOR_BUFFER_BIT);
gl3.glUseProgram(program);
gl3.glBindVertexArray(VAO[0]);
gl3.glDrawArrays(GL3.GL_TRIANGLES, 0, 3);
gl3.glBindVertexArray(0);
gl3.glUseProgram(0);
}
@Override
protected boolean render(GL gl) {
GL3 gl3 = (GL3) gl;
// Setup blending
gl3.glEnable(GL_BLEND);
gl3.glBlendEquation(GL_FUNC_ADD);
gl3.glBlendFunc(GL_ONE, GL_SRC1_COLOR);
Mat4 projection = glm.perspective_((float) Math.PI * 0.25f, 4.0f / 3.0f, 0.1f, 100.0f);
Mat4 model = new Mat4(1.0f);
Mat4 mvp = projection.mul(viewMat4()).mul(model);
gl3.glViewport(0, 0, windowSize.x, windowSize.y);
gl3.glClearBufferfv(GL_COLOR, 0, clearColor.put(0, 1).put(1, 1).put(2, 1).put(3, 1));
gl3.glUseProgram(programName);
gl3.glUniformMatrix4fv(uniformMvp, 1, false, mvp.toFa_(), 0);
gl3.glUniform1i(uniformDiffuse, 0);
gl3.glActiveTexture(GL_TEXTURE0);
gl3.glBindTexture(GL_TEXTURE_2D, textureName.get(0));
gl3.glBindVertexArray(vertexArrayName.get(0));
gl3.glDrawArraysInstanced(GL_TRIANGLES, 0, vertexCount, 1);
return true;
}
@Override
protected boolean render(GL gl) {
GL3 gl3 = (GL3) gl;
Mat4 projection = glm.ortho_(-1.0f, 1.0f, -1.0f, 1.0f, 1.0f, -1.0f);
Mat4 model = new Mat4(1.0f);
Mat4 mvp = projection.mul(new Mat4(1.0f)).mul(model);
gl3.glViewport(0, 0, windowSize.x, windowSize.y);
gl3.glClearBufferfv(GL_COLOR, 0, clearColor.put(0, 0).put(1, 0).put(2, 0).put(3, 0));
// Bind the program for use
gl3.glUseProgram(programName);
gl3.glUniform1i(uniformDiffuse, 0);
gl3.glUniformMatrix4fv(uniformMvp, 1, false, mvp.toFa_(), 0);
gl3.glActiveTexture(GL_TEXTURE0);
gl3.glBindTexture(GL_TEXTURE_RECTANGLE, textureRectName.get(0));
gl3.glBindVertexArray(vertexArrayName.get(0));
gl3.glDrawArraysInstanced(GL_TRIANGLES, 0, vertexCount, 1);
return true;
}
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;
}
@Override
public void display(GLAutoDrawable drawable) {
// System.out.println("display");
GL3 gl3 = drawable.getGL().getGL3();
/**
* We set the clear color and depth (although depth is not necessary since it is 1 by default).
*/
gl3.glClearColor(0f, .33f, 0.66f, 1f);
gl3.glClearDepthf(1f);
gl3.glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
{
// update matrix based on time
now = System.currentTimeMillis();
float diff = (float) (now - start) / 1000;
/**
* Here we build the matrix that will multiply our original vertex positions. We scale,
* halving it, and rotate it.
*/
scale = FloatUtil.makeScale(scale, true, 0.5f, 0.5f, 0.5f);
zRotazion = FloatUtil.makeRotationEuler(zRotazion, 0, 0, 0, diff);
modelToClip = FloatUtil.multMatrix(scale, zRotazion);
}
gl3.glUseProgram(programName);
gl3.glBindVertexArray(vertexArrayName.get(0));
gl3.glUniformMatrix4fv(modelToClipMatrixUL, 1, false, modelToClip, 0);
gl3.glDrawElements(GL_TRIANGLES, elementSize, GL_UNSIGNED_SHORT, 0);
/**
* The following line binds VAO and program to the default values, this is not a cheaper
* binding, it costs always as a binding. Every binding means additional validation and
* overhead, this may affect your performances. So you should avoid these calls, but remember
* that OpenGL is a state machine, so what you left bound remains bound!
*/
// gl3.glBindVertexArray(0);
// gl3.glUseProgram(0);
/**
* Check always any GL error, but keep in mind this is an implicit synchronization between CPU
* and GPU, so you should use it only for debug purposes.
*/
checkError(gl3, "display");
}
@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;
}
