private void DrawBlock(VertexArray block, ClipmapLevel level, ClipmapLevel coarserLevel, int overallWest, int overallSouth, int blockWest, int blockSouth, Context context, SceneState sceneState)
{
int textureWest = blockWest - overallWest;
int textureSouth = blockSouth - overallSouth;
_patchOriginInClippedLevel.Value = new Vector2F(textureWest, textureSouth);
DrawState drawState = new DrawState(_renderState, _shaderProgram, block);
context.Draw(_primitiveType, drawState, sceneState);
}
public void RenderInterleavedVertexBuffer()
{
string vs =
@"#version 330
layout(location = og_positionVertexLocation) in vec4 position;
layout(location = og_colorVertexLocation) in vec4 color;
out vec4 fsColor;
void main()
{
gl_Position = position;
fsColor = color;
}";
string fs =
@"#version 330
in vec4 fsColor;
out vec4 FragColor;
void main()
{
FragColor = fsColor;
}";
InterleavedVertex[] vertices = new InterleavedVertex[]
{
new InterleavedVertex()
{
Position = new Vector4F(0, 0, 0, 1),
Color = new BlittableRGBA(Color.Red)
},
new InterleavedVertex()
{
Position = new Vector4F(0, 0, 0, 1),
Color = new BlittableRGBA(Color.FromArgb(255, 0, 255, 0))
}
};
GraphicsWindow window = Device.CreateWindow(1, 1);
Framebuffer framebuffer = TestUtility.CreateFramebuffer(window.Context);
ShaderProgram sp = Device.CreateShaderProgram(vs, fs);
VertexBuffer vertexBuffer = Device.CreateVertexBuffer(BufferHint.StaticDraw, ArraySizeInBytes.Size(vertices));
VertexArray va = window.Context.CreateVertexArray();
{
int colorOffset = SizeInBytes <Vector4F> .Value;
vertexBuffer.CopyFromSystemMemory(vertices);
va.Attributes[sp.VertexAttributes["position"].Location] =
new VertexBufferAttribute(vertexBuffer, ComponentDatatype.Float, 4, false, 0, SizeInBytes <InterleavedVertex> .Value);
va.Attributes[sp.VertexAttributes["color"].Location] =
new VertexBufferAttribute(vertexBuffer, ComponentDatatype.UnsignedByte, 4, true, colorOffset, SizeInBytes <InterleavedVertex> .Value);
window.Context.Framebuffer = framebuffer;
window.Context.Draw(PrimitiveType.Points, 0, 1, new DrawState(TestUtility.CreateRenderStateWithoutDepthTest(), sp, va), new SceneState());
TestUtility.ValidateColor(framebuffer.ColorAttachments[0], 255, 0, 0);
window.Context.Draw(PrimitiveType.Points, 1, 1, new DrawState(TestUtility.CreateRenderStateWithoutDepthTest(), sp, va), new SceneState());
TestUtility.ValidateColor(framebuffer.ColorAttachments[0], 0, 255, 0);
}
}
