CubeExample(void)
: n(16)
, screen_prog()
, draw_prog()
, screen(List("Position")("TexCoord").Get(), shapes::Screen(), screen_prog)
, cube(List("Position").Get(), shapes::Cube(), draw_prog)
{
draw_prog.Use();
UniformBlock(draw_prog, "OffsetBlock").Binding(0);
cube_pos<< BufferIndexedTarget::Uniform << 0
<< BufferUsage::StaticDraw
<< OffsetData(n);
ProgramUniformSampler(screen_prog, "Palette").Set(0);
Texture::Active(0);
palette << Texture::Target::_1D
<< TextureFilter::Nearest
<< TextureWrap::ClampToEdge
<< images::LinearGradient(
16,
Vec3f(0, 0, 0),
std::map<GLfloat, Vec3f>({
{ 0.0/16.0, Vec3f(0.0, 0.0, 0.0)},
{ 1.0/16.0, Vec3f(0.5, 0.0, 1.0)},
{ 3.0/16.0, Vec3f(0.0, 0.0, 1.0)},
{ 6.0/16.0, Vec3f(0.0, 0.6, 0.6)},
{ 8.0/16.0, Vec3f(0.0, 1.0, 0.0)},
{ 11.0/16.0, Vec3f(0.6, 0.6, 0.0)},
{ 13.0/16.0, Vec3f(1.0, 0.1, 0.0)},
{ 16.0/16.0, Vec3f(0.7, 0.0, 0.0)}
})
);
ProgramUniformSampler(screen_prog, "Tex").Set(1);
Texture::Active(1);
tex << Texture::Target::Rectangle
<< TextureMinFilter::Nearest
<< TextureMagFilter::Nearest
<< TextureWrap::ClampToEdge
<< images::ImageSpec(
64, 64,
Format::Red,
InternalFormat::R8,
DataType::UnsignedByte
);
rbo << Renderbuffer::Target::Renderbuffer
<< images::ImageSpec(64, 64, InternalFormat::DepthComponent);
fbo << Framebuffer::Target::Draw
<< FramebufferAttachment::Color << tex
<< FramebufferAttachment::Depth << rbo
<< FramebufferComplete();
gl.ClearColor(0.0f, 0.0f, 0.0f, 0.0f);
gl.ClearDepth(1.0f);
gl.Enable(Capability::CullFace);
}
DataBuffer(const Program& prog, GLuint tex_unit, GLuint width, GLuint height)
{
Texture::Active(tex_unit);
ProgramUniformSampler(prog, "DataMap").Set(tex_unit);
tex << Texture::Target::Rectangle
<< TextureFilter::Linear
<< TextureWrap::ClampToEdge
<< images::ImageSpec(
width, height,
Format::RGBA,
InternalFormat::RGBA32F,
PixelDataType::Float
);
rbo << Renderbuffer::Target::Renderbuffer
<< images::ImageSpec(width, height, InternalFormat::DepthComponent32);
fbo << Framebuffer::Target::Draw
<< FramebufferAttachment::Color << tex
<< FramebufferAttachment::Depth << rbo
<< FramebufferComplete();
}
DepthBuffer(const Program& prog, GLuint tex_unit, GLuint tex_side)
: side(tex_side)
{
Texture::Active(tex_unit);
ProgramUniformSampler(prog, "DepthMap").Set(tex_unit);
tex << Texture::Target::_2D
<< TextureFilter::Nearest
<< TextureWrap::ClampToEdge
<< images::ImageSpec(
side, side,
Format::DepthComponent,
InternalFormat::DepthComponent32,
PixelDataType::Float
);
rbo << Renderbuffer::Target::Renderbuffer
<< images::ImageSpec(side, side, InternalFormat::R8);
fbo << Framebuffer::Target::Draw
<< FramebufferAttachment::Color << rbo
<< FramebufferAttachment::Depth << tex
<< FramebufferComplete();
}
