public void UniformBuffer()
{
using (GraphicsWindow window = Device.CreateWindow(1, 1))
using (ShaderProgram sp = Device.CreateShaderProgram(
ShaderSources.PassThroughVertexShader(),
ShaderSources.RedUniformBlockFragmentShader()))
using (UniformBuffer uniformBuffer = Device.CreateUniformBuffer(BufferHint.DynamicDraw, sp.UniformBlocks["RedBlock"].SizeInBytes))
{
Assert.IsFalse(sp.Log.Contains("warning"));
UniformBlock redBlock = sp.UniformBlocks["RedBlock"];
UniformBlockMember red = redBlock.Members["red"];
//
// Verify creating uniform buffer
//
Assert.IsNotNull(uniformBuffer);
Assert.AreEqual(BufferHint.DynamicDraw, uniformBuffer.UsageHint);
Assert.AreEqual(redBlock.SizeInBytes, uniformBuffer.SizeInBytes);
redBlock.Bind(uniformBuffer);
//
// Verify copying into red member
//
float redIntensity = 0.5f;
uniformBuffer.CopyFromSystemMemory(new[] { redIntensity }, red.OffsetInBytes);
float[] redIntensity2 = uniformBuffer.CopyToSystemMemory <float>(red.OffsetInBytes, sizeof(float));
Assert.AreEqual(redIntensity, redIntensity2[0]);
}
}
public void UniformBlock()
{
using (GraphicsWindow window = Device.CreateWindow(1, 1))
using (ShaderProgram sp = Device.CreateShaderProgram(
ShaderSources.PassThroughVertexShader(),
ShaderSources.RedUniformBlockFragmentShader()))
{
Assert.IsFalse(sp.Log.Contains("warning"));
Assert.IsEmpty(sp.Uniforms);
Assert.AreEqual(1, sp.UniformBlocks.Count);
UniformBlock redBlock = sp.UniformBlocks["RedBlock"];
Assert.AreEqual("RedBlock", redBlock.Name);
Assert.GreaterOrEqual(redBlock.SizeInBytes, 4);
Assert.AreEqual(1, redBlock.Members.Count);
UniformBlockMember red = redBlock.Members["red"];
Assert.AreEqual("red", red.Name);
Assert.AreEqual(0, red.OffsetInBytes);
Assert.AreEqual(UniformType.Float, red.Datatype);
}
}