private void CreateAndFillBuffers()
{
Vector3[] aPositions = new Vector3[] {
new Vector3(-1, -1, 0),
new Vector3(1, -1, 0),
new Vector3(-1, 1, 0),
new Vector3(1, 1, 0)};
Vector2[] aTexCoords = new Vector2[] {
new Vector2(0, 1),
new Vector2(1, 1),
new Vector2(0, 0),
new Vector2(1, 0)};
positions = context.NewVertexBuffer<Vector3>(VertexAttribPointerType.Float, 3);
positions.UploadVertices(aPositions);
textureCoords = context.NewVertexBuffer<Vector2>(VertexAttribPointerType.Float, 2);
textureCoords.UploadVertices(aTexCoords);
indices = context.NewIndicesBuffer();
indices.UploadIndices(new uint[] {0, 1, 2, 3});
}
public TextureRenderer(GLGraphicsContext context, GLTexture texture)
{
this.context = context;
texture = context.NewTexture(OpenTK.Graphics.OpenGL.TextureMinFilter.Nearest, OpenTK.Graphics.OpenGL.TextureMagFilter.Nearest,
OpenTK.Graphics.OpenGL.TextureWrapMode.Clamp, OpenTK.Graphics.OpenGL.TextureWrapMode.Clamp);
vertices = context.NewVertexBuffer<Vector3>(OpenTK.Graphics.OpenGL.VertexAttribPointerType.Float,
3);
vertices.UploadVertices(new Vector3[] {
new Vector3(-1, -1, 0),
new Vector3(1, -1, 0),
new Vector3(-1, 1, 0),
new Vector3(1, 1, 0)});
texCoords = context.NewVertexBuffer<Vector2>(OpenTK.Graphics.OpenGL.VertexAttribPointerType.Float,
2);
texCoords.UploadVertices(new Vector2[] {
new Vector2(0, 0),
new Vector2(1, 0),
new Vector2(0, 1),
new Vector2(1, 1)});
prog = context.NewProgram(MVP_VERTEX_SHADER, TEXTURE_SHADER);
paramSpec = ImmutableList<Tuple<String, Object>>.List(
Tuple.Create<String, Object>("a_position", vertices),
Tuple.Create<String, Object>("a_texPos", texCoords),
Tuple.Create<String, Object>("u_texture0", texture));
}