private void Render(Rectangle R)
{
if (program == 0)
{
program = PreloadShaders();
GLES32.GlEnable(GLES32.GlVertexArray);
GLES32.GlGenVertexArrays(1, VAO, 0);
GLES32.GlBindVertexArray(VAO[0]);
GLES32.GlGenBuffers(1, VBO, 0);
GLES32.GlBindBuffer(GLES32.GlArrayBuffer, VBO[0]);
GLES32.GlBufferData(GLES32.GlArrayBuffer, vertices.Length * sizeof(float), buffer, GLES32.GlStaticDraw);
int posloc = GLES32.GlGetAttribLocation(program, "Position");
GLES32.GlVertexAttribPointer(posloc, 3, GLES32.GlFloat, false, 0, 0);
GLES32.GlEnableVertexAttribArray(posloc);
GLES32.GlGenBuffers(1, IBO, 0);
GLES32.GlBindBuffer(GLES32.GlElementArrayBuffer, IBO[0]);
GLES32.GlBufferData(GLES32.GlElementArrayBuffer, inds.Length * sizeof(byte), ibuffer, GLES32.GlStaticDraw);
GLES32.GlBindBuffer(GLES32.GlElementArrayBuffer, 0);
GLES32.GlBindBuffer(GLES32.GlArrayBuffer, 0);
GLES32.GlBindVertexArray(0);
GLES32.GlUseProgram(program);
}
GLES32.GlClearColor(0, 0, 0, 1);
GLES32.GlClear(GLES32.GlColorBufferBit | GLES32.GlDepthBufferBit);
GLES32.GlViewport(0, 0, (int)(GLView.Width * 3), (int)(GLView.Height * 3));
GLES32.GlLineWidth(50);
int scaleLocation = GLES32.GlGetUniformLocation(program, "gScale");
//scale = (scale + 0.005f) % 1;
GLES32.GlUniform1f(scaleLocation, scale);
/*int colorLocation = GLES32.GlGetUniformLocation(program, "color");
* red = (float)((red + 0.005f) % (2.0 * Math.PI));
* GLES32.GlUniform4f(colorLocation, (float)Math.Abs(Math.Sin(red)), 0, 0, 1);*/
int worldLocation = GLES32.GlGetUniformLocation(program, "world");
//Matrix.TranslateM(mat, 0, 0f, 0f, 0f);
Matrix.RotateM(mat, 0, 1 * rotateSide, 0, 0, 1);
//Matrix.TranslateM(mat, 0, 0f, 0f, 0f);
GLES32.GlUniformMatrix4fv(worldLocation, 1, true, mat, 0);
GLES32.GlBindVertexArray(VAO[0]);
GLES32.GlBindBuffer(GLES32.GlElementArrayBuffer, IBO[0]);
GLES32.GlDrawElements(GLES32.GlTriangles, 6, GLES32.GlUnsignedByte, 0);
//GLES32.GlBindBuffer(GLES32.GlArrayBuffer, VBO[0]);
//GLES32.GlDrawArrays(GLES32.GlTriangleFan, 0, 7);
GLES32.GlFinish();
}
