public virtual void Draw(Camera cam, ShaderProgram shader)
{
Texture?.Bind();
shader.Bind();
shader.SetUniform("model", Transform);
Vao.DrawElements(PrimitiveType.Quads);
}
public void Draw(Area area, Texture texture, ShaderProgram shader)
{
texture.Bind();
shader.Bind();
area.Vao.DrawArrays(PrimitiveType.TriangleStrip);
}
public void Draw(Area a, Texture texture)
{
texture.Bind();
shader.Bind();
a.Vao.DrawArrays(PrimitiveType.TriangleStrip);
}
/// <summary>
/// Set uniform state variable (sampler1D, sampler2D, sampler3D, samplerCube variable).
/// </summary>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/> used for operations.
/// </param>
/// <param name="uniformName">
/// A <see cref="String"/> that specify the variable name in the shader source.
/// </param>
/// <param name="tex">
/// A <see cref="Texture"/> holding the uniform variabile data (the texture name).
/// </param>
/// <param name="texUnit">
/// A <see cref="Int32"/> that specify the texture unit processing the texture <paramref name="tex"/>.
/// </param>
public void SetUniform(GraphicsContext ctx, string uniformName, Texture tex, uint texUnit)
{
if (ctx == null)
throw new ArgumentNullException("ctx");
UniformBinding uniform = GetUniform(uniformName);
if (tex == null)
throw new ArgumentNullException("tex");
if (tex.Exists(ctx) == false)
throw new ArgumentException("not exists", "tex");
CheckProgramBinding();
CheckUniformType(uniform, tex.SamplerType);
// Activate texture unit
Gl.ActiveTexture(Gl.TEXTURE0 + (int)texUnit);
// Bind texture (on active texture unit)
tex.Bind(ctx);
// Apply texture parameters
tex.ApplyParameters(ctx);
// Set uniform value (sampler)
// Cast to Int32 since the sampler type can be set only with glUniform2i
Gl.Uniform1(uniform.Location, (int)texUnit);
// Validate program
Validate();
}