public Presenter(Context glContext)
{
this.glContext = glContext;
glPipeline = glContext.Pipeline;
sourceFramebuffer = new Framebuffer(glContext);
destinationFramebuffer = new Framebuffer(glContext);
vertices = new Buffer(glContext, BufferTarget.ArrayBuffer, 4 * 8 * sizeof(float), BufferUsageHint.StaticDraw, new Data(new[]
{
new Vertex(-1f, -1f),
new Vertex(-1f, 1f),
new Vertex(1f, 1f),
new Vertex(1f, -1f)
}));
indices = new Buffer(glContext, BufferTarget.ElementArrayBuffer, 6 * sizeof(ushort), BufferUsageHint.StaticDraw, new Data(new ushort[]
{
0, 1, 2, 0, 2, 3
}));
sampler = new Sampler();
sampler.SetMagFilter(TextureMagFilter.Nearest);
sampler.SetMinFilter(TextureMinFilter.Nearest);
string shaderErrors;
if (!VertexShader.TryCompile(VertexShaderText, out vertexShader, out shaderErrors) ||
!FragmentShader.TryCompile(FragmentShaderText, out fragmentShader, out shaderErrors) ||
!ShaderProgram.TryLink(glContext, new ShaderProgramDescription
{
VertexShaders = vertexShader,
FragmentShaders = fragmentShader,
VertexAttributeNames = new[] { "in_position" },
SamplerNames = new[] { "Image" }
},
out program, out shaderErrors))
throw new ArgumentException("Program errors:\n\n" + shaderErrors);
vertexArray = new VertexArray(glContext);
vertexArray.SetElementArrayBuffer(glContext, indices);
vertexArray.SetVertexAttributeF(glContext, 0, vertices, VertexAttributeDimension.Two, VertexAttribPointerType.Float, false, 8, 0);
}