public void Draw()
{
Gles.glEnable(Gles.GL_DEPTH_TEST);
Gles.glClearColor(0, 0, 0.4f, 1);
Gles.glClear(Gles.GL_COLOR_BUFFER_BIT | Gles.GL_DEPTH_BUFFER_BIT);
if (mProgram == 0)
{
return;
}
Gles.glUseProgram(mProgram);
Gles.glThrowError();
if (UseBufferMethod)
{
Gles.glBindBuffer(Gles.GL_ARRAY_BUFFER, mVertexPositionBuffer);
Gles.glThrowError();
Gles.glVertexAttribPointer((GLuint)mPositionAttribLocation, 3, Gles.GL_FLOAT, Gles.GL_FALSE, 0, IntPtr.Zero);
Gles.glThrowError();
}
else
{
Gles.glVertexAttribPointer((GLuint)mPositionAttribLocation, 3, Gles.GL_FLOAT, Gles.GL_FALSE, 0, mVertexPositions);
Gles.glThrowError();
}
Gles.glEnableVertexAttribArray((GLuint)mPositionAttribLocation);
Gles.glThrowError();
Gles.glDrawArrays(Gles.GL_TRIANGLES, 0, 3);
Gles.glThrowError();
}
public void Draw()
{
Gles.glEnable(Gles.GL_DEPTH_TEST);
Gles.glClear(Gles.GL_COLOR_BUFFER_BIT | Gles.GL_DEPTH_BUFFER_BIT);
if (mProgram == 0)
{
return;
}
Gles.glUseProgram(mProgram);
Gles.glBindBuffer(Gles.GL_ARRAY_BUFFER, mVertexPositionBuffer);
Gles.glEnableVertexAttribArray((GLuint)mPositionAttribLocation);
Gles.glVertexAttribPointer((GLuint)mPositionAttribLocation, 3, Gles.GL_FLOAT, Gles.GL_FALSE, 0, IntPtr.Zero);
Gles.glBindBuffer(Gles.GL_ARRAY_BUFFER, mVertexColorBuffer);
Gles.glEnableVertexAttribArray((GLuint)mColorAttribLocation);
Gles.glVertexAttribPointer((GLuint)mColorAttribLocation, 3, Gles.GL_FLOAT, Gles.GL_FALSE, 0, IntPtr.Zero);
float[,] modelMatrix = MathHelpers.SimpleModelMatrix((float)mDrawCount / 50.0f);
Gles.glUniformMatrix4fv(mModelUniformLocation, 1, Gles.GL_FALSE, modelMatrix);
float[,] viewMatrix = MathHelpers.SimpleViewMatrix();
Gles.glUniformMatrix4fv(mViewUniformLocation, 1, Gles.GL_FALSE, viewMatrix);
float[,] projectionMatrix = MathHelpers.SimpleProjectionMatrix((float)mWindowWidth / (float)mWindowHeight);
Gles.glUniformMatrix4fv(mProjUniformLocation, 1, Gles.GL_FALSE, projectionMatrix);
// Draw 36 indices: six faces, two triangles per face, 3 indices per triangle
Gles.glBindBuffer(Gles.GL_ELEMENT_ARRAY_BUFFER, mIndexBuffer);
Gles.glDrawElements(Gles.GL_TRIANGLES, (6 * 2) * 3, Gles.GL_UNSIGNED_SHORT, IntPtr.Zero);
mDrawCount += 1;
}