void Render(double time)
{
namespace se = oglplus::smart_enums;
gl.Clear().ColorBuffer().DepthBuffer().StencilBuffer();
// make the camera matrix orbiting around the origin
// at radius of 3.5 with elevation between 15 and 90 degrees
Mat4f camera = CamMatrixf::Orbiting(
Vec3f(),
6.5,
Degrees(time * 135),
Degrees(15 + (-SineWave(0.25+time/12.5)+1.0)*0.5*75)
);
ModelMatrixf model = ModelMatrixf::Translation(0.0f, 1.5f, 0.0);
ModelMatrixf identity;
//
SetProgramUniform(prog_norm, "CameraMatrix", camera);
SetProgramUniform(prog_refl, "CameraMatrix", camera);
// draw the plane into the stencil buffer
prog_norm.Use();
gl.Disable(se::Blend());
gl.Disable(se::DepthTest());
gl.Enable(se::StencilTest());
gl.ColorMask(false, false, false, false);
gl.StencilFunc(se::Always(), 1, 1);
gl.StencilOp(se::Keep(), se::Keep(), se::Replace());
Uniform<Mat4f> model_matrix_norm(prog_norm, "ModelMatrix");
model_matrix_norm.Set(identity);
plane.Bind();
gl.DrawArrays(se::TriangleStrip(), 0, 4);
gl.ColorMask(true, true, true, true);
gl.Enable(se::DepthTest());
gl.StencilFunc(se::Equal(), 1, 1);
gl.StencilOp(se::Keep(), se::Keep(), se::Keep());
// draw the torus using the reflection program
prog_refl.Use();
Uniform<Mat4f>(prog_refl, "ModelMatrix").Set(model);
torus.Bind();
torus_instr.Draw(torus_indices);
gl.Disable(se::StencilTest());
prog_norm.Use();
// draw the torus using the normal object program
model_matrix_norm.Set(model);
torus_instr.Draw(torus_indices);
// blend-in the plane
gl.Enable(se::Blend());
gl.BlendEquation(se::Max());
model_matrix_norm.Set(identity);
plane.Bind();
gl.DrawArrays(se::TriangleStrip(), 0, 4);
}
void Render(double time)
{
auto camera =
CamMatrixf::Roll(Degrees(SineWave(time / 11.0)*7+SineWave(time/13.0)*5))*
CamMatrixf::Orbiting(
Vec3f(),
40.0f,
Degrees(SineWave(time / 11.0)*10+CosineWave(time/19.0)*10-90),
Degrees(SineWave(time / 17.0)*10+SineWave(time/13.0)*10)
);
auto mm_identity = ModelMatrixf();
auto mm_rotation = ModelMatrixf::RotationZ(FullCircles(time / 7.0));
Uniform<Mat4f>* model_matrix = nullptr;
GLuint drawing_fan = fan_index;
auto drawing_driver =
[
&model_matrix,
&mm_identity,
&mm_rotation,
&drawing_fan
](GLuint phase) -> bool
{
if(phase == drawing_fan)
model_matrix->Set(mm_rotation);
else model_matrix->Set(mm_identity);
return true;
};
// render the light mask
light_fbo.Bind(Framebuffer::Target::Draw);
gl.Clear().ColorBuffer().DepthBuffer();
mask_vao.Bind();
mask_prog.Use();
mask_prog.camera_matrix.Set(camera);
model_matrix = &mask_prog.model_matrix;
meshes.Draw(drawing_driver);
// render the final image
DefaultFramebuffer().Bind(Framebuffer::Target::Draw);
gl.Clear().ColorBuffer().DepthBuffer();
draw_vao.Bind();
draw_prog.Use();
Vec4f lsp = projection * camera * Vec4f(light_position, 1.0);
draw_prog.light_screen_pos = lsp.xyz()/lsp.w();
draw_prog.camera_matrix.Set(camera);
model_matrix = &draw_prog.model_matrix;
meshes.Draw(drawing_driver);
}
void Render(double time)
{
gl.Clear().ColorBuffer().DepthBuffer();
//
// camera matrix
auto camera = CamMatrixf::Orbiting(
Vec3f(),
4.5f,
Degrees(time * 50),
Degrees(SineWave(time / 15.0) * 70)
);
// model matrix
auto model =
ModelMatrixf::Translation(
0.0f,
sqrt(1.0f+SineWave(time / 2.0)),
0.0f
) *
ModelMatrixf::RotationX(FullCircles(time));
//
// use transform feedback to get transformed hole vertices
prog_tfb.Use();
Uniform<Mat4f>(prog_tfb, "CameraMatrix").Set(camera);
Uniform<Mat4f>(prog_tfb, "ModelMatrix").Set(model);
holes.Bind();
{
TransformFeedback::Activator activates_tfb(
TransformFeedbackPrimitiveType::Points
);
gl.DrawArrays(PrimitiveType::Points, 0, hole_count);
}
prog.Use();
//
Uniform<Mat4f>(prog, "CameraMatrix").Set(camera);
Uniform<Mat4f>(prog, "ModelMatrix").Set(model);
// map the transform feedback buffer
BufferTypedMap<GLfloat> transf_hole_verts_map(
Buffer::Target::TransformFeedback,
BufferMapAccess::Read
);
// use the values stored in the buffer as the input
// for the fragment shader, that will use them to
// calculate the bump map
Uniform<GLfloat>(prog, "TransfHole").SetVectors<3>(
transf_hole_verts_map.Count(),
transf_hole_verts_map.Data()
);
// bind the VAO for the spere and render it
sphere.Bind();
sphere_instr.Draw(sphere_indices);
}
void Render(double time)
{
static const ModelMatrixf reflection =
ModelMatrixf::Translation(0.0f, -1.0f, 0.0f) *
ModelMatrixf::Reflection(false, true, false);
auto camera = CamMatrixf::Orbiting(
Vec3f(),
4.5,
FullCircles(time / 10.0),
Degrees(45.0 - SineWave(time / 7.0)*35.0)
);
shape_prog.Use();
shape.Bind();
gl.FrontFace(make_shape.FaceWinding());
shape_model_matrix =
ModelMatrixf::Translation(0.0f, 1.1f, 0.0f) *
ModelMatrixf::RotationX(FullCircles(time / 12.0));
// render into the off-screen framebuffer
fbo.Bind(Framebuffer::Target::Draw);
gl.Viewport(width/tex_size_div, height/tex_size_div);
gl.Clear().ColorBuffer().DepthBuffer();
shape_camera_matrix = camera * reflection;
gl.FrontFace(Inverted(make_shape.FaceWinding()));
shape_instr.Draw(shape_indices);
// render into the on-screen framebuffer
dfb.Bind(Framebuffer::Target::Draw);
gl.Viewport(width, height);
gl.Clear().ColorBuffer().DepthBuffer();
shape_camera_matrix = camera;
gl.FrontFace(make_shape.FaceWinding());
shape_instr.Draw(shape_indices);
// Render the plane
plane_prog.Use();
plane.Bind();
gl.FrontFace(make_plane.FaceWinding());
plane_camera_matrix = camera;
plane_model_matrix = ModelMatrixf::Translation(0.0f, -0.5f, 0.0f);
plane_instr.Draw(plane_indices);
}
void Render(double time)
{
gl.Clear().ColorBuffer().DepthBuffer();
//
auto lightAzimuth = FullCircles(time * -0.5);
light_pos.Set(
Vec3f(
Cos(lightAzimuth),
1.0f,
Sin(lightAzimuth)
) * 2.0f
);
//
camera_matrix.Set(
CamMatrixf::Orbiting(
Vec3f(),
3.0f,
Degrees(-45),
Degrees(SineWave(time / 30.0) * 70)
)
);
// set the model matrix
model_matrix.Set(
ModelMatrixf::RotationY(FullCircles(time * 0.05))
);
cube.Bind();
gl.CullFace(Face::Back);
cube_instr.Draw(cube_indices);
}
void Renderer::Draw(const VertexArray& va, const IndexBuffer& ib, const Shader& shader) const
{
shader.Bind();
ib.Bind();
va.Bind();
GLCall(glDrawElements(GL_TRIANGLES, ib.GetCount(), GL_UNSIGNED_INT, 0));
}
void Render(double time)
{
gl.Clear().ColorBuffer().DepthBuffer();
//
// set the matrix for camera orbiting the origin
camera_matrix.Set(
CamMatrixf::Orbiting(
Vec3f(),
4.0 - SineWave(time / 6.0) * 2.0,
FullCircles(time * 0.4),
Degrees(SineWave(time / 30.0) * 90)
)
);
// set the model matrix
model_matrix.Set(
ModelMatrixf::RotationZ(FullCircles(time * 0.1))
);
cube.Bind();
gl.CullFace(Face::Front);
cube_instr.Draw(cube_indices);
gl.CullFace(Face::Back);
cube_instr.Draw(cube_indices);
}
VertexArray VAOForProgram(const ProgramOps& prog) const
{
VertexArray vao;
vao.Bind();
prog.Use();
size_t i=0, n = _names.size();
while(i != n)
{
if(_npvs[i] != 0)
{
try
{
_vbos[i].Bind(Buffer::Target::Array);
VertexAttribArray attr(prog, _names[i]);
attr.Setup(_npvs[i], DataType::Float);
attr.Enable();
}
catch(Error&){ }
}
++i;
}
assert((i+1) == _npvs.size());
if(_npvs[i] != 0)
{
assert((i+1) == _vbos.size());
_vbos[i].Bind(Buffer::Target::ElementArray);
}
return std::move(vao);
}
Shape(const Program& prog, const ShapeBuilder& builder)
: make_shape(builder)
, shape_instr(make_shape.Instructions())
, shape_indices(make_shape.Indices())
, vbos(4) {
// bind the VAO for the shape
vao.Bind();
typename ShapeBuilder::VertexAttribs vert_attr_info;
const GLchar* vert_attr_name[] = {
"Position", "Normal", "Tangent", "TexCoord"};
for(int va = 0; va != 4; ++va) {
const GLchar* name = vert_attr_name[va];
std::vector<GLfloat> data;
auto getter = vert_attr_info.VertexAttribGetter(data, name);
if(getter != nullptr)
try {
// bind the VBO for the vertex attribute
vbos[va].Bind(Buffer::Target::Array);
GLuint npv = getter(make_shape, data);
// upload the data
Buffer::Data(Buffer::Target::Array, data);
// setup the vertex attribs array
VertexArrayAttrib attr(prog, name);
attr.Setup<GLfloat>(npv);
attr.Enable();
} catch(Error&) {
}
}
}
void Update(void)
{
gl.Viewport(size, size);
fbo.Bind(Framebuffer::Target::Draw);
Framebuffer::AttachColorTexture(
Framebuffer::Target::Draw,
1,
holder.CurrentHeightMap(),
0
);
Context::ColorBuffer draw_buffs[2] = {
FramebufferColorAttachment::_0,
FramebufferColorAttachment::_1
};
gl.DrawBuffers(draw_buffs);
prog.Use();
prog.tex_1.Set(holder.TexUnit1());
prog.tex_2.Set(holder.TexUnit2());
prog.new_drop.Set(std::rand()%size, std::rand()%size);
vao.Bind();
gl.DrawArrays(PrimitiveType::Points, 0, 1);
holder.Swap();
}
void Render(double time)
{
gl.Clear().ColorBuffer().DepthBuffer();
//
Uniform<Mat4f>(prog, "cameraMatrix").Set(
CamMatrixf::Orbiting(
Vec3f(),
3.0 + std::sin(time)*1.5,
FullCircles(time * 0.5),
Degrees(std::sin(time * 0.5) * 70)
)
);
Uniform<Mat4f>(prog, "modelMatrix").Set(
ModelMatrixf::RotationA(
Vec3f(1.0f, 1.0f, 1.0f),
FullCircles(time * 0.4)
)
);
Uniform<Vec3f>(prog, "lightPos").Set(Vec3f(1.0f, 2.0f, 3.0f*std::sin(time * 2.9)));
vao.Bind();
// This is not very effective
shape.Instructions().Draw(shape.Indices());
}
Grid(const Program& prog, float quality)
: make_grid(1.0, 16 + quality*quality*64)
, grid_instr(make_grid.Instructions())
, grid_indices(make_grid.Indices())
{
// bind the VAO for the shape
vao.Bind();
std::vector<GLfloat> data;
// bind the VBO for the positions
positions.Bind(Buffer::Target::Array);
GLuint n_per_vertex = make_grid.Positions(data);
// upload the data
Buffer::Data(Buffer::Target::Array, data);
// setup the vertex attribs array
VertexArrayAttrib attr(prog, "Position");
attr.Setup<GLfloat>(n_per_vertex);
attr.Enable();
// bind the VBO for the indices
indices.Bind(Buffer::Target::ElementArray);
// upload them
Buffer::Data(Buffer::Target::ElementArray, grid_indices);
// clear the indexs buffer
grid_indices.clear();
}
void Render(double time)
{
gl.Clear().ColorBuffer().DepthBuffer();
//
// set the matrix for camera orbiting the origin
camera_matrix.Set(
CamMatrixf::Orbiting(
Vec3f(),
4.5,
Degrees(time * 35),
Degrees(SineWave(time / 20.0) * 60)
)
);
// set the model matrix
model_matrix.Set(
ModelMatrixf::RotationX(FullCircles(time * 0.25))
);
torus.Bind();
gl.PolygonMode(PolygonMode::Line);
gl.CullFace(Face::Front);
torus_instr.Draw(torus_indices);
//
gl.PolygonMode(PolygonMode::Fill);
gl.CullFace(Face::Back);
torus_instr.Draw(torus_indices);
}
void Render(double time)
{
gl.Clear().ColorBuffer().DepthBuffer();
//
// set the matrix for camera orbiting the origin
camera_matrix.Set(
CamMatrixf::Orbiting(
Vec3f(),
4.5 - SineWave(time / 16.0) * 2.0,
FullCircles(time / 12.0),
Degrees(SineWave(time / 30.0) * 90)
)
);
// set the model matrix
model_matrix.Set(
ModelMatrixf::RotationA(
Vec3f(1.0f, 1.0f, 1.0f),
FullCircles(time / 10.0)
)
);
shape.Bind();
shape_instr.Draw(shape_indices);
}
RectangleExample(void)
{
prog << "#version 330\n"
"in vec2 Position;"
"in vec3 Color;"
"out vec3 vertColor;"
"void main(void)"
"{"
" vertColor = Color;"
" gl_Position = vec4(Position, 0.0, 1.0);"
"}"_glsl_vs;
prog << "#version 330\n"
"in vec3 vertColor;"
"out vec4 fragColor;"
"void main(void)"
"{"
" fragColor = vec4(vertColor, 1.0);"
"}"_glsl_fs;
prog.Link();
prog.Use();
// bind the VAO for the rectangle
rectangle.Bind();
GLfloat rectangle_verts[8] = {
-1.0f, -1.0f,
-1.0f, 1.0f,
1.0f, -1.0f,
1.0f, 1.0f
};
// bind the VBO for the rectangle vertices
verts.Bind(Buffer::Target::Array);
// upload the data
Buffer::Data(Buffer::Target::Array, 8, rectangle_verts);
// setup the vertex attribs array for the vertices
VertexAttribArray vert_attr(prog, "Position");
vert_attr.Setup(2, DataType::Float);
vert_attr.Enable();
GLfloat rectangle_colors[12] = {
0.0f, 1.0f, 1.0f,
1.0f, 0.0f, 1.0f,
1.0f, 1.0f, 0.0f,
0.0f, 0.0f, 0.0f,
};
// bind the VBO for the rectangle colors
colors.Bind(Buffer::Target::Array);
// upload the data
Buffer::Data(Buffer::Target::Array, 12, rectangle_colors);
// setup the vertex attribs array for the vertices
VertexAttribArray color_attr(prog, "Color");
color_attr.Setup(3, DataType::Float);
color_attr.Enable();
//
gl.ClearDepth(1.0f);
}
void Draw(double time, double fade)
{
// Shadow map
shadows_fbo.Bind(FramebufferTarget::Draw);
gl.Viewport(shadow_size, shadow_size);
gl.Clear().DepthBuffer();
auto light = CamMatrixf::Orbiting(
Vec3f(0, side*0.25, 0),
side*1.5,
Degrees(-time * 27),
Degrees(SineWave(time / 19.0)*25 + 45)
);
shadow_prog.fade.Set(fade);
shadow_prog.camera_matrix.Set(light);
shadow_prog.Use();
shadow_vao.Bind();
gl.Enable(Capability::PolygonOffsetFill);
cube.Draw(side*side);
gl.Disable(Capability::PolygonOffsetFill);
gl.Finish();
// On-screen
default_fb.Bind(Framebuffer::Target::Draw);
gl.Viewport(width, height);
gl.Clear().ColorBuffer().DepthBuffer();
auto camera = CamMatrixf::Orbiting(
Vec3f(),
side*1.1,
Degrees(time * 19),
Degrees(SineWave(time / 20.0) * 39 + 50)
);
display_prog.fade.Set(fade);
display_prog.light_pos.Set(light.Position());
display_prog.camera_pos.Set(camera.Position());
display_prog.light_matrix.Set(light);
display_prog.camera_matrix.Set(camera);
display_prog.Use();
display_vao.Bind();
cube.Draw(side*side);
}
void Render(double time)
{
fbo.Bind(Framebuffer::Target::Draw);
gl.Clear().ColorBuffer().DepthBuffer();
main_prog.Use();
cube.Bind();
camera_matrix.Set(
CamMatrixf::Orbiting(
Vec3f(),
20.5,
FullCircles(time / 20.0),
Degrees(SineWave(time / 25.0) * 30)
)
);
auto i = cube_matrices.begin(), e = cube_matrices.end();
while(i != e)
{
model_matrix.Set(*i);
ambient_color.Set(0.7f, 0.6f, 0.2f);
diffuse_color.Set(1.0f, 0.8f, 0.3f);
face_instr.Draw(face_indices);
ambient_color.Set(0.1f, 0.1f, 0.1f);
diffuse_color.Set(0.3f, 0.3f, 0.3f);
edge_instr.Draw(edge_indices);
++i;
}
dfb.Bind(Framebuffer::Target::Draw);
gl.Clear().ColorBuffer().DepthBuffer();
dof_prog.Use();
screen.Bind();
focus_depth.Set(0.6 + SineWave(time / 9.0)*0.3);
gl.Enable(Capability::Blend);
gl.DrawArrays(PrimitiveType::TriangleStrip, 0, 4);
gl.Disable(Capability::Blend);
}
void Render(double /*time*/)
{
gl.Clear().ColorBuffer();
// draw the lines between control points
color = Vec3f(0.9f, 0.9f, 0.2f);
control.Bind();
gl.DrawArrays(PrimitiveType::LineStrip, 0, ctrl_n);
// draw the curve
color = Vec3f(0.1f, 0.1f, 0.1f);
curve.Bind();
gl.DrawArrays(PrimitiveType::LineStrip, 0, curve_n);
// draw the control points
color = Vec3f(0.9f, 0.0f, 0.0f);
control.Bind();
gl.PointSize(8.0);
gl.DrawArrays(PrimitiveType::Points, 0, ctrl_n);
gl.PointSize(1.0);
}
void Render(const Mat4f& model)
{
prog.Use();
model_matrix.Set(model);
// bind the VAO
sphere.Bind();
// use the instructions to draw the sphere
// (this basically calls glDrawArrays* or glDrawElements*)
sphere_instr.Draw(sphere_indices);
}
Shape(const Program& prog)
: vbos(4)
, point_count(4096) {
// bind the VAO for the shape
vao.Bind();
make_shape_1(prog, 0, "Position1");
make_shape_2(prog, 1, "Position2");
make_radiance(prog, 2, "Radiance1");
make_radiance(prog, 3, "Radiance2");
}
void Render(double time)
{
gl.Clear().ColorBuffer().DepthBuffer();
auto camera = CamMatrixf::Orbiting(
Vec3f(),
8.5,
FullCircles(time / 5.0),
Degrees(15 + (-SineWave(time/10.0)+1.0)* 0.5 * 75)
);
ModelMatrixf model =
ModelMatrixf::Translation(0.0f, 2.5f, 0.0) *
ModelMatrixf::RotationA(
Vec3f(1.0f, 1.0f, 1.0f),
FullCircles(time / 7.0)
);
plane_prog.Use();
plane_camera_matrix.Set(camera);
plane.Bind();
gl.DrawArrays(PrimitiveType::TriangleStrip, 0, 4);
shape_prog.Use();
shape_camera_matrix.Set(camera);
shape_model_matrix.Set(model);
shape.Bind();
shape_instr.Draw(shape_indices);
halo_prog.Use();
halo_camera_matrix.Set(camera);
halo_model_matrix.Set(model);
gl.DepthMask(false);
gl.Enable(Capability::Blend);
shape_instr.Draw(shape_indices);
gl.Disable(Capability::Blend);
gl.DepthMask(true);
}
void Render(double time)
{
gl.Clear().ColorBuffer().DepthBuffer();
auto cameraMatrix = CamMatrixf::Orbiting(
Vec3f(0.0f, 3.0f, 0.0f),
8.0f,
FullCircles(time / 12.0),
Degrees(SineWave(time / 20.0) * 80)
);
plane.Bind();
plane_prog.Use();
Uniform<Mat4f>(plane_prog, "CameraMatrix").Set(cameraMatrix);
gl.DrawArrays(PrimitiveType::TriangleStrip, 0, 4);
gl.Enable(Capability::Blend);
volume.Bind();
volume_prog.Use();
Uniform<Mat4f>(volume_prog, "CameraMatrix").Set(cameraMatrix);
Uniform<Vec3f>(volume_prog, "ViewX").Set(
cameraMatrix.Row(0).xyz()
);
Uniform<Vec3f>(volume_prog, "ViewY").Set(
cameraMatrix.Row(1).xyz()
);
Uniform<Vec3f>(volume_prog, "ViewZ").Set(
cameraMatrix.Row(2).xyz()
);
gl.DrawArraysInstanced(
PrimitiveType::Points,
0, 1,
samples
);
gl.Disable(Capability::Blend);
}
void Render(double time)
{
gl.Clear().ColorBuffer().DepthBuffer();
auto lightPos = light_path.Position(time * 0.05);
auto cameraMatrix = CamMatrixf::Orbiting(
Vec3f(),
4.5f,
Degrees(0),
Degrees(SineWave(time / 20.0) * 80)
);
light.Bind();
light_prog.Use();
Uniform<Vec3f>(light_prog, "LightPos").Set(lightPos);
Uniform<Mat4f>(light_prog, "CameraMatrix").Set(cameraMatrix);
sphere_instr.Draw(sphere_indices);
clouds.Bind();
cloud_prog.Use();
Uniform<Vec3f>(cloud_prog, "LightPos").Set(lightPos);
Uniform<Mat4f>(cloud_prog, "CameraMatrix").Set(cameraMatrix);
Uniform<Vec4f>(cloud_prog, "ViewX").Set(cameraMatrix.Row(0));
Uniform<Vec4f>(cloud_prog, "ViewY").Set(cameraMatrix.Row(1));
Uniform<Vec4f>(cloud_prog, "ViewZ").Set(cameraMatrix.Row(2));
for(std::size_t i=0, n=positions.size(); i!=n; ++i)
{
cloud_tex[i].Bind(Texture::Target::_3D);
gl.DrawArraysInstanced(
PrimitiveType::Points,
i, 1,
samples
);
}
}
void Render(double time)
{
gl.Clear().ColorBuffer().DepthBuffer();
CamMatrixf camera = CamMatrixf::Orbiting(
Vec3f(),
4.5f + float(SineWave(time / 25.0)),
FullCircles(time / 30.0),
Degrees(SineWave(time / 19.0) * 20)
);
light_prog.camera_matrix.Set(camera);
flare_prog.camera_matrix.Set(camera);
shape_prog.camera_matrix.Set(camera);
shape_prog.camera_position.Set(camera.Position());
shape_prog.model_matrix.Set(
ModelMatrixf::RotationX(FullCircles(time / 30.0))
);
shape_prog.Use();
shape.Draw();
NoProgram().Use();
lights.Bind();
light_prog.Use();
for(GLuint l=0; l!=n_flares; ++l)
{
queries[l].Begin(Query::Target::SamplesPassed);
gl.DrawArrays(PrimitiveType::Points, l, 1);
queries[l].End(Query::Target::SamplesPassed);
}
gl.Enable(Capability::Blend);
gl.Disable(Capability::DepthTest);
flare_prog.Use();
for(GLuint l=0; l!=n_flares; ++l)
{
GLint samples = 0;
queries[l].WaitForResult(samples);
if(samples != 0)
{
flare_prog.samples = samples;
gl.DrawArrays(PrimitiveType::Points, l, 1);
}
}
gl.Enable(Capability::DepthTest);
gl.Disable(Capability::Blend);
}
RippleGenerator(GLuint first_tex_unit)
: size(1024)
, prog(size)
, holder(size, first_tex_unit)
{
fbo.Bind(Framebuffer::Target::Draw);
Framebuffer::AttachColorTexture(
Framebuffer::Target::Draw,
0,
holder.BumpMap(),
0
);
vao.Bind();
}
Particle(const VertexShader& vs, FragmentShader&& frag)
: sphere_instr(make_sphere.Instructions())
, sphere_indices(make_sphere.Indices())
, fs(std::forward<FragmentShader>(frag))
{
// attach the shaders to the program
prog.AttachShader(vs);
prog.AttachShader(fs);
// link and use it
prog.Link();
prog.Use();
projection_matrix = (prog/"ProjectionMatrix");
camera_matrix = (prog/"CameraMatrix");
model_matrix = (prog/"ModelMatrix");
light_pos = (prog/"LightPos");
// bind the VAO for the sphere
sphere.Bind();
const GLuint n_attr = 2;
// pointers to the vertex attribute data build functions
typedef GLuint (shapes::Sphere::*Func)(std::vector<GLfloat>&) const;
Func func[n_attr] = {
&shapes::Sphere::Positions,
&shapes::Sphere::Normals,
};
// managed references to the VBOs
Reference<Buffer> vbo[n_attr] = {verts, normals};
// vertex attribute identifiers from the shaders
const GLchar* ident[n_attr] = {"Position", "Normal"};
for(GLuint i=0; i!=n_attr; ++i)
{
// bind the VBO
vbo[i].Bind(Buffer::Target::Array);
// make the data
std::vector<GLfloat> data;
GLuint n_per_vertex = (make_sphere.*func[i])(data);
// upload the data
Buffer::Data(Buffer::Target::Array, data);
// setup the vertex attrib
VertexArrayAttrib attr(prog, ident[i]);
attr.Setup<GLfloat>(n_per_vertex);
attr.Enable();
}
}
TorusExample(void)
: make_torus(1.0, 0.5, 36, 24)
, torus_instr(make_torus.Instructions())
, torus_indices(make_torus.Indices())
, prog(make_prog())
, projection_matrix(prog, "ProjectionMatrix")
, camera_matrix(prog, "CameraMatrix")
, model_matrix(prog, "ModelMatrix")
{
Uniform<Vec4f>(prog, "ClipPlane").Set(0.f, 0.f, 1.f, 0.f);
// bind the VAO for the torus
torus.Bind();
// bind the VBO for the torus vertices
verts.Bind(Buffer::Target::Array);
{
std::vector<GLfloat> data;
GLuint n_per_vertex = make_torus.Positions(data);
// upload the data
Buffer::Data(Buffer::Target::Array, data);
// setup the vertex attribs array for the vertices
VertexArrayAttrib attr(prog, "Position");
attr.Setup<GLfloat>(n_per_vertex);
attr.Enable();
}
// bind the VBO for the torus UV-coordinates
texcoords.Bind(Buffer::Target::Array);
{
std::vector<GLfloat> data;
GLuint n_per_vertex = make_torus.TexCoordinates(data);
// upload the data
Buffer::Data(Buffer::Target::Array, data);
// setup the vertex attribs array for the vertices
VertexArrayAttrib attr(prog, "TexCoord");
attr.Setup<GLfloat>(n_per_vertex);
attr.Enable();
}
//
gl.ClearColor(0.8f, 0.8f, 0.7f, 0.0f);
gl.ClearDepth(1.0f);
gl.FrontFace(make_torus.FaceWinding());
gl.Enable(Capability::DepthTest);
gl.Enable(Functionality::ClipDistance, 0);
}
void Render(
const Vec3f& light,
const Mat4f& camera,
const Mat4f& model
)
{
// use the shading program
prog.Use();
// set the uniforms
light_pos.Set(light);
camera_matrix.Set(camera);
model_matrix.Set(model);
// bind the VAO
shape.Bind();
// use the instructions to draw the shape
// (this basically calls glDrawArrays* or glDrawElements*)
shape_instr.Draw(shape_indices);
}
void Render(double time)
{
gl.Clear().ColorBuffer().DepthBuffer();
//
// set the matrix for camera orbiting the origin
camera_matrix.Set(
CamMatrixf::Orbiting(
Vec3f(0.0f, 0.5f, 0.0f),
6.5,
Degrees(time * 35),
Degrees(55 - SineWave(time / 20.0) * 30)
)
);
light_pos.Set(light_path.Position(time / 10.0));
plane.Bind();
plane_instr.Draw(plane_indices);
}
Shape(const Shader& vs, const Shader& fs)
: shape_instr(make_shape.Instructions())
, shape_indices(make_shape.Indices())
, prog(make(vs, fs))
, projection_matrix(prog, "ProjectionMatrix")
, camera_matrix(prog, "CameraMatrix")
, model_matrix(prog, "ModelMatrix")
, light_pos(prog, "LightPos")
{
// bind the VAO for the shape
shape.Bind();
const GLuint n_attr = 3;
// pointers to the vertex attribute data build functions
typedef GLuint (ShapeMaker::*Func)(std::vector<GLfloat>&) const;
Func func[n_attr] = {
&ShapeMaker::Positions,
&ShapeMaker::Normals,
&ShapeMaker::TexCoordinates
};
// managed references to the VBOs
Reference<Buffer> vbo[n_attr] = {verts, normals, texcoords};
// vertex attribute identifiers from the shaders
const GLchar* ident[n_attr] = {"Position", "Normal", "TexCoord"};
for(GLuint i=0; i!=n_attr; ++i)
{
// bind the VBO
vbo[i].Bind(Buffer::Target::Array);
// make the data
std::vector<GLfloat> data;
GLuint n_per_vertex = (make_shape.*func[i])(data);
// upload the data
Buffer::Data(Buffer::Target::Array, data);
// setup the vertex attrib
VertexArrayAttrib attr(prog, ident[i]);
attr.Setup<GLfloat>(n_per_vertex);
attr.Enable();
}
}
