HaloExample(void)
: make_shape()
, shape_indices(make_shape.Indices())
, shape_instr(make_shape.Instructions())
, vs_shape(ObjectDesc("Shape VS"))
, vs_plane(ObjectDesc("Plane VS"))
, fs_shape(ObjectDesc("Shape FS"))
, fs_plane(ObjectDesc("Plane FS"))
, vs_halo(ObjectDesc("Halo VS"))
, gs_halo(ObjectDesc("Halo GS"))
, fs_halo(ObjectDesc("Halo FS"))
, shape_projection_matrix(shape_prog, "ProjectionMatrix")
, shape_camera_matrix(shape_prog, "CameraMatrix")
, shape_model_matrix(shape_prog, "ModelMatrix")
, plane_projection_matrix(plane_prog, "ProjectionMatrix")
, plane_camera_matrix(plane_prog, "CameraMatrix")
, halo_projection_matrix(halo_prog, "ProjectionMatrix")
, halo_camera_matrix(halo_prog, "CameraMatrix")
, halo_model_matrix(halo_prog, "ModelMatrix")
{
vs_shape.Source(
"#version 140\n"
"in vec4 Position;"
"in vec3 Normal;"
"uniform mat4 ProjectionMatrix, CameraMatrix, ModelMatrix;"
"uniform vec3 LightPos;"
"out vec3 vertNormal;"
"out vec3 vertViewNormal;"
"out vec3 vertLight;"
"void main(void)"
"{"
" gl_Position = ModelMatrix * Position;"
" vertNormal = mat3(ModelMatrix)*Normal;"
" vertViewNormal = mat3(CameraMatrix)*vertNormal;"
" vertLight = LightPos - gl_Position.xyz;"
" gl_Position = ProjectionMatrix * CameraMatrix * gl_Position;"
"}"
);
vs_shape.Compile();
fs_shape.Source(
"#version 140\n"
"in vec3 vertNormal;"
"in vec3 vertViewNormal;"
"in vec3 vertLight;"
"uniform mat4 CameraMatrix;"
"out vec4 fragColor;"
"void main(void)"
"{"
" float ltlen = sqrt(length(vertLight));"
" float ltexp = dot("
" normalize(vertNormal),"
" normalize(vertLight)"
" );"
" float lview = dot("
" normalize(vertLight),"
" normalize(vec3("
" CameraMatrix[0][2],"
" CameraMatrix[1][2],"
" CameraMatrix[2][2] "
" ))"
" );"
" float depth = normalize(vertViewNormal).z;"
" vec3 ftrefl = vec3(0.9, 0.8, 0.7);"
" vec3 scatter = vec3(0.9, 0.6, 0.1);"
" vec3 bklt = vec3(0.8, 0.6, 0.4);"
" vec3 ambient = vec3(0.5, 0.4, 0.3);"
" fragColor = vec4("
" pow(max(ltexp, 0.0), 8.0)*ftrefl+"
" ( ltexp+1.0)/ltlen*pow(depth,2.0)*scatter+"
" (-ltexp+1.0)/ltlen*(1.0-depth)*scatter+"
" (-lview+1.0)*0.6*(1.0-abs(depth))*bklt+"
" 0.2*ambient,"
" 1.0"
" );"
"}"
);
fs_shape.Compile();
shape_prog.AttachShader(vs_shape);
shape_prog.AttachShader(fs_shape);
shape_prog.Link();
vs_plane.Source(
"#version 140\n"
"in vec4 Position;"
"in vec3 Normal;"
"uniform mat4 ProjectionMatrix, CameraMatrix;"
"uniform vec3 LightPos;"
"out vec3 vertNormal;"
"out vec3 vertLight;"
"void main(void)"
"{"
" gl_Position = "
" ProjectionMatrix *"
" CameraMatrix *"
" Position;"
" vertNormal = Normal;"
" vertLight = LightPos-Position.xyz;"
"}"
);
vs_plane.Compile();
fs_plane.Source(
"#version 140\n"
"in vec3 vertNormal;"
"in vec3 vertLight;"
"out vec4 fragColor;"
"void main(void)"
"{"
" float l = sqrt(length(vertLight));"
" float e = dot("
" vertNormal,"
" normalize(vertLight)"
" );"
" float d = l > 0.0 ? e / l : 0.0;"
" float i = 0.2 + 2.5 * d;"
" fragColor = vec4(0.8*i, 0.7*i, 0.4*i, 1.0);"
"}"
);
fs_plane.Compile();
plane_prog.AttachShader(vs_plane);
plane_prog.AttachShader(fs_plane);
plane_prog.Link();
vs_halo.Source(
"#version 150\n"
"in vec4 Position;"
"in vec3 Normal;"
"uniform mat4 ModelMatrix, CameraMatrix;"
"out vec3 vertNormal;"
"out float vd;"
"void main(void)"
"{"
" gl_Position = "
" CameraMatrix *"
" ModelMatrix *"
" Position;"
" vertNormal = ("
" CameraMatrix *"
" ModelMatrix *"
" vec4(Normal, 0.0)"
" ).xyz;"
" vd = vertNormal.z;"
"}"
);
vs_halo.Compile();
gs_halo.Source(
"#version 150\n"
"layout(triangles) in;"
"layout(triangle_strip, max_vertices = 12) out;"
"in vec3 vertNormal[];"
"in float vd[];"
"uniform mat4 CameraMatrix, ProjectionMatrix;"
"uniform vec3 LightPos;"
"out float geomAlpha;"
"void main(void)"
"{"
" for(int v=0; v!=3; ++v)"
" {"
" int a = v, b = (v+1)%3, c = (v+2)%3;"
" vec4 pa = gl_in[a].gl_Position;"
" vec4 pb = gl_in[b].gl_Position;"
" vec4 pc = gl_in[c].gl_Position;"
" vec4 px, py;"
" vec3 na = vertNormal[a];"
" vec3 nb = vertNormal[b];"
" vec3 nc = vertNormal[c];"
" vec3 nx, ny;"
" if(vd[a] == 0.0 && vd[b] == 0.0)"
" {"
" px = pa;"
" nx = na;"
" py = pb;"
" ny = nb;"
" }"
" else if(vd[a] > 0.0 && vd[b] < 0.0)"
" {"
" float x = vd[a]/(vd[a]-vd[b]);"
" float y;"
" px = mix(pa, pb, x);"
" nx = mix(na, nb, x);"
" if(vd[c] < 0.0)"
" {"
" y = vd[a]/(vd[a]-vd[c]);"
" py = mix(pa, pc, y);"
" ny = mix(na, nc, y);"
" }"
" else"
" {"
" y = vd[c]/(vd[c]-vd[b]);"
" py = mix(pc, pb, y);"
" ny = mix(nc, nb, y);"
" }"
" }"
" else continue;"
" vec4 gx1 = vec4(px.xyz, 1.0);"
" vec4 gy1 = vec4(py.xyz, 1.0);"
" vec4 gx2 = vec4(px.xyz + nx*0.3, 1.0);"
" vec4 gy2 = vec4(py.xyz + ny*0.3, 1.0);"
" gl_Position = ProjectionMatrix * gy1;"
" geomAlpha = 1.0;"
" EmitVertex();"
" gl_Position = ProjectionMatrix * gx1;"
" geomAlpha = 1.0;"
" EmitVertex();"
" gl_Position = ProjectionMatrix * gy2;"
" geomAlpha = 0.0;"
" EmitVertex();"
" gl_Position = ProjectionMatrix * gx2;"
" geomAlpha = 0.0;"
" EmitVertex();"
" EndPrimitive();"
" break;"
" }"
"}"
);
gs_halo.Compile();
fs_halo.Source(
"#version 150\n"
"in float geomAlpha;"
"out vec4 fragColor;"
"void main(void)"
"{"
" fragColor = vec4("
" 0.5, 0.4, 0.3,"
" pow(geomAlpha, 2.0)"
" );"
"}"
);
fs_halo.Compile();
halo_prog.AttachShader(vs_halo);
halo_prog.AttachShader(gs_halo);
halo_prog.AttachShader(fs_halo);
halo_prog.Link();
// bind the VAO for the shape
shape.Bind();
// bind the VBO for the shape vertices
shape_verts.Bind(Buffer::Target::Array);
{
std::vector<GLfloat> data;
GLuint n_per_vertex = make_shape.Positions(data);
Buffer::Data(Buffer::Target::Array, data);
VertexAttribSlot location;
if(VertexArrayAttrib::QueryCommonLocation(
MakeGroup(shape_prog, halo_prog),
"Position",
location
))
{
VertexArrayAttrib attr(location);
attr.Setup<GLfloat>(n_per_vertex);
attr.Enable();
}
else OGLPLUS_ABORT("Inconsistent 'Position' location");
}
// bind the VBO for the shape normals
shape_normals.Bind(Buffer::Target::Array);
{
std::vector<GLfloat> data;
GLuint n_per_vertex = make_shape.Normals(data);
Buffer::Data(Buffer::Target::Array, data);
shape_prog.Use();
VertexArrayAttrib attr(shape_prog, "Normal");
attr.Setup<GLfloat>(n_per_vertex);
attr.Enable();
}
// bind the VAO for the plane
plane.Bind();
// bind the VBO for the plane vertices
plane_verts.Bind(Buffer::Target::Array);
{
GLfloat data[4*3] = {
-9.0f, 0.0f, 9.0f,
-9.0f, 0.0f, -9.0f,
9.0f, 0.0f, 9.0f,
9.0f, 0.0f, -9.0f
};
Buffer::Data(Buffer::Target::Array, 4*3, data);
plane_prog.Use();
VertexArrayAttrib attr(plane_prog, "Position");
attr.Setup<Vec3f>();
attr.Enable();
}
// bind the VBO for the plane normals
plane_normals.Bind(Buffer::Target::Array);
{
GLfloat data[4*3] = {
-0.1f, 1.0f, 0.1f,
-0.1f, 1.0f, -0.1f,
0.1f, 1.0f, 0.1f,
0.1f, 1.0f, -0.1f
};
Buffer::Data(Buffer::Target::Array, 4*3, data);
plane_prog.Use();
VertexArrayAttrib attr(plane_prog, "Normal");
attr.Setup<Vec3f>();
attr.Enable();
}
Vec3f lightPos(2.0f, 2.5f, 9.0f);
ProgramUniform<Vec3f>(shape_prog, "LightPos").Set(lightPos);
ProgramUniform<Vec3f>(plane_prog, "LightPos").Set(lightPos);
gl.ClearColor(0.2f, 0.2f, 0.2f, 0.0f);
gl.ClearDepth(1.0f);
gl.ClearStencil(0);
gl.Enable(Capability::DepthTest);
gl.BlendFunc(BlendFn::SrcAlpha, BlendFn::One);
}
ReflectionExample(void)
: torus_indices(make_torus.Indices())
, torus_instr(make_torus.Instructions())
, vs_norm(ObjectDesc("Vertex-Normal"))
, vs_refl(ObjectDesc("Vertex-Reflection"))
, gs_refl(ObjectDesc("Geometry-Reflection"))
{
namespace se = oglplus::smart_enums;
// Set the normal object vertex shader source
vs_norm.Source(
"#version 330\n"
"in vec4 Position;"
"in vec3 Normal;"
"out vec3 geomColor;"
"out vec3 geomNormal;"
"out vec3 geomLight;"
"uniform mat4 ProjectionMatrix, CameraMatrix, ModelMatrix;"
"uniform vec3 LightPos;"
"void main(void)"
"{"
" gl_Position = ModelMatrix * Position;"
" geomColor = Normal;"
" geomNormal = mat3(ModelMatrix)*Normal;"
" geomLight = LightPos-gl_Position.xyz;"
" gl_Position = ProjectionMatrix * CameraMatrix * gl_Position;"
"}"
);
// compile it
vs_norm.Compile();
// Set the reflected object vertex shader source
// which just passes data to the geometry shader
vs_refl.Source(
"#version 330\n"
"in vec4 Position;"
"in vec3 Normal;"
"out vec3 vertNormal;"
"void main(void)"
"{"
" gl_Position = Position;"
" vertNormal = Normal;"
"}"
);
// compile it
vs_refl.Compile();
// Set the reflected object geometry shader source
// This shader creates a reflection matrix that
// relies on the fact that the reflection is going
// to be done by the y-plane
gs_refl.Source(
"#version 330\n"
"layout(triangles) in;"
"layout(triangle_strip, max_vertices = 6) out;"
"in vec3 vertNormal[];"
"uniform mat4 ProjectionMatrix;"
"uniform mat4 CameraMatrix;"
"uniform mat4 ModelMatrix;"
"out vec3 geomColor;"
"out vec3 geomNormal;"
"out vec3 geomLight;"
"uniform vec3 LightPos;"
"mat4 ReflectionMatrix = mat4("
" 1.0, 0.0, 0.0, 0.0,"
" 0.0,-1.0, 0.0, 0.0,"
" 0.0, 0.0, 1.0, 0.0,"
" 0.0, 0.0, 0.0, 1.0 "
");"
"void main(void)"
"{"
" for(int v=0; v!=gl_in.length(); ++v)"
" {"
" vec4 Position = gl_in[v].gl_Position;"
" gl_Position = ModelMatrix * Position;"
" geomColor = vertNormal[v];"
" geomNormal = mat3(ModelMatrix)*vertNormal[v];"
" geomLight = LightPos - gl_Position.xyz;"
" gl_Position = "
" ProjectionMatrix *"
" CameraMatrix *"
" ReflectionMatrix *"
" gl_Position;"
" EmitVertex();"
" }"
" EndPrimitive();"
"}"
);
// compile it
gs_refl.Compile();
// set the fragment shader source
fs.Source(
"#version 330\n"
"in vec3 geomColor;"
"in vec3 geomNormal;"
"in vec3 geomLight;"
"out vec4 fragColor;"
"void main(void)"
"{"
" float l = length(geomLight);"
" float d = l > 0.0 ? dot("
" geomNormal, "
" normalize(geomLight)"
" ) / l : 0.0;"
" float i = 0.2 + max(d, 0.0) * 2.0;"
" fragColor = vec4(abs(geomNormal)*i, 1.0);"
"}"
);
// compile it
fs.Compile();
// attach the shaders to the normal rendering program
prog_norm.AttachShader(vs_norm);
prog_norm.AttachShader(fs);
// link it
prog_norm.Link();
// attach the shaders to the reflection rendering program
prog_refl.AttachShader(vs_refl);
prog_refl.AttachShader(gs_refl);
prog_refl.AttachShader(fs);
// link it
prog_refl.Link();
// bind the VAO for the torus
torus.Bind();
// bind the VBO for the torus vertices
torus_verts.Bind(se::Array());
{
std::vector<GLfloat> data;
GLuint n_per_vertex = make_torus.Positions(data);
// upload the data
Buffer::Data(se::Array(), data);
// setup the vertex attribs array for the vertices
typedef VertexAttribArray VAA;
VertexAttribSlot
loc_norm = VAA::GetLocation(prog_norm, "Position"),
loc_refl = VAA::GetLocation(prog_refl, "Position");
assert(loc_norm == loc_refl);
VertexAttribArray attr(loc_norm);
attr.Setup<GLfloat>(n_per_vertex);
attr.Enable();
}
// bind the VBO for the torus normals
torus_normals.Bind(se::Array());
{
std::vector<GLfloat> data;
GLuint n_per_vertex = make_torus.Normals(data);
// upload the data
Buffer::Data(se::Array(), data);
// setup the vertex attribs array for the normals
typedef VertexAttribArray VAA;
VertexAttribSlot
loc_norm = VAA::GetLocation(prog_norm, "Normal"),
loc_refl = VAA::GetLocation(prog_refl, "Normal");
assert(loc_norm == loc_refl);
VertexAttribArray attr(loc_norm);
attr.Setup<GLfloat>(n_per_vertex);
attr.Enable();
}
// bind the VAO for the plane
plane.Bind();
// bind the VBO for the plane vertices
plane_verts.Bind(se::Array());
{
GLfloat data[4*3] = {
-2.0f, 0.0f, 2.0f,
-2.0f, 0.0f, -2.0f,
2.0f, 0.0f, 2.0f,
2.0f, 0.0f, -2.0f
};
// upload the data
Buffer::Data(se::Array(), 4*3, data);
// setup the vertex attribs array for the vertices
prog_norm.Use();
VertexAttribArray attr(prog_norm, "Position");
attr.Setup<Vec3f>();
attr.Enable();
}
// bind the VBO for the torus normals
plane_normals.Bind(se::Array());
{
GLfloat data[4*3] = {
-0.1f, 1.0f, 0.1f,
-0.1f, 1.0f, -0.1f,
0.1f, 1.0f, 0.1f,
0.1f, 1.0f, -0.1f
};
// upload the data
Buffer::Data(se::Array(), 4*3, data);
// setup the vertex attribs array for the normals
prog_norm.Use();
VertexAttribArray attr(prog_norm, "Normal");
attr.Setup<Vec3f>();
attr.Enable();
}
VertexArray::Unbind();
Vec3f lightPos(2.0f, 2.0f, 3.0f);
prog_norm.Use();
SetUniform(prog_norm, "LightPos", lightPos);
prog_refl.Use();
SetUniform(prog_refl, "LightPos", lightPos);
//
gl.ClearColor(0.2f, 0.2f, 0.2f, 0.0f);
gl.ClearDepth(1.0f);
gl.ClearStencil(0);
}
ShadowExample()
: make_torus(1.0, 0.7, 72, 48)
, torus_indices(make_torus.Indices())
, torus_instr(make_torus.Instructions())
, object_projection_matrix(object_prog)
, object_camera_matrix(object_prog)
, object_model_matrix(object_prog)
, shadow_projection_matrix(shadow_prog)
, shadow_camera_matrix(shadow_prog)
, shadow_model_matrix(shadow_prog)
, object_color(object_prog)
, object_light_mult(object_prog) {
vs_object.Source(
"#version 140\n"
"in vec4 Position;"
"in vec3 Normal;"
"uniform mat4 ProjectionMatrix, CameraMatrix, ModelMatrix;"
"uniform vec3 LightPos;"
"out vec3 vertNormal;"
"out vec3 vertLight;"
"void main()"
"{"
" gl_Position = ModelMatrix * Position;"
" vertNormal = mat3(ModelMatrix)*Normal;"
" vertLight = LightPos - gl_Position.xyz;"
" gl_Position = ProjectionMatrix * CameraMatrix * gl_Position;"
"}");
vs_object.Compile();
fs_object.Source(
"#version 140\n"
"in vec3 vertNormal;"
"in vec3 vertLight;"
"uniform vec3 Color;"
"uniform float LightMult;"
"out vec4 fragColor;"
"void main()"
"{"
" float l = sqrt(length(vertLight));"
" float d = l > 0.0 ?"
" dot("
" vertNormal,"
" normalize(vertLight)"
" ) / l : 0.0;"
" float i = 0.3 + max(d, 0.0) * LightMult;"
" fragColor = vec4(Color*i, 1.0);"
"}");
fs_object.Compile();
object_prog.AttachShader(vs_object);
object_prog.AttachShader(fs_object);
object_prog.Link().Use();
object_projection_matrix.BindTo("ProjectionMatrix");
object_camera_matrix.BindTo("CameraMatrix");
object_model_matrix.BindTo("ModelMatrix");
object_color.BindTo("Color");
object_light_mult.BindTo("LightMult");
vs_shadow.Source(
"#version 150\n"
"in vec4 Position;"
"in vec3 Normal;"
"uniform mat4 ModelMatrix;"
"uniform vec3 LightPos;"
"out float ld;"
"void main()"
"{"
" gl_Position = ModelMatrix * Position;"
" vec3 geomNormal = mat3(ModelMatrix)*Normal;"
" vec3 lightDir = LightPos - gl_Position.xyz;"
" ld = dot(geomNormal, normalize(lightDir));"
"}");
vs_shadow.Compile();
gs_shadow.Source(
"#version 150\n"
"layout(triangles) in;"
"layout(triangle_strip, max_vertices = 12) out;"
"in float ld[];"
"uniform mat4 CameraMatrix, ProjectionMatrix;"
"uniform vec3 LightPos;"
"void main()"
"{"
" for(int v=0; v!=3; ++v)"
" {"
" int a = v, b = (v+1)%3, c = (v+2)%3;"
" vec4 pa = gl_in[a].gl_Position;"
" vec4 pb = gl_in[b].gl_Position;"
" vec4 pc = gl_in[c].gl_Position;"
" vec4 px, py;"
" if(ld[a] == 0.0 && ld[b] == 0.0)"
" {"
" px = pa;"
" py = pb;"
" }"
" else if(ld[a] > 0.0 && ld[b] < 0.0)"
" {"
" float x = ld[a]/(ld[a]-ld[b]);"
" float y;"
" px = mix(pa, pb, x);"
" if(ld[c] < 0.0)"
" {"
" y = ld[a]/(ld[a]-ld[c]);"
" py = mix(pa, pc, y);"
" }"
" else"
" {"
" y = ld[c]/(ld[c]-ld[b]);"
" py = mix(pc, pb, y);"
" }"
" }"
" else continue;"
" vec3 vx = px.xyz - LightPos;"
" vec3 vy = py.xyz - LightPos;"
" vec4 sx = vec4(px.xyz + vx*10.0, 1.0);"
" vec4 sy = vec4(py.xyz + vy*10.0, 1.0);"
" vec4 cpx = CameraMatrix * px;"
" vec4 cpy = CameraMatrix * py;"
" vec4 csx = CameraMatrix * sx;"
" vec4 csy = CameraMatrix * sy;"
" gl_Position = ProjectionMatrix * cpy;"
" EmitVertex();"
" gl_Position = ProjectionMatrix * cpx;"
" EmitVertex();"
" gl_Position = ProjectionMatrix * csy;"
" EmitVertex();"
" gl_Position = ProjectionMatrix * csx;"
" EmitVertex();"
" EndPrimitive();"
" break;"
" }"
"}");
gs_shadow.Compile();
fs_shadow.Source(
"#version 150\n"
"out vec4 fragColor;"
"void main()"
"{"
" fragColor = vec4(0.0, 0.0, 0.0, 1.0);"
"}");
fs_shadow.Compile();
shadow_prog.AttachShader(vs_shadow);
shadow_prog.AttachShader(gs_shadow);
shadow_prog.AttachShader(fs_shadow);
shadow_prog.Link().Use();
shadow_projection_matrix.BindTo("ProjectionMatrix");
shadow_camera_matrix.BindTo("CameraMatrix");
shadow_model_matrix.BindTo("ModelMatrix");
// bind the VAO for the torus
torus.Bind();
// bind the VBO for the torus vertices
torus_verts.Bind(Buffer::Target::Array);
{
std::vector<GLfloat> data;
GLuint n_per_vertex = make_torus.Positions(data);
Buffer::Data(Buffer::Target::Array, data);
VertexArrayAttrib attr(VertexArrayAttrib::GetCommonLocation(
MakeGroup(object_prog, shadow_prog), "Position"));
attr.Setup<GLfloat>(n_per_vertex);
attr.Enable();
}
// bind the VBO for the torus normals
torus_normals.Bind(Buffer::Target::Array);
{
std::vector<GLfloat> data;
GLuint n_per_vertex = make_torus.Normals(data);
Buffer::Data(Buffer::Target::Array, data);
object_prog.Use();
VertexArrayAttrib attr(object_prog, "Normal");
attr.Setup<GLfloat>(n_per_vertex);
attr.Enable();
}
// bind the VAO for the plane
plane.Bind();
// bind the VBO for the plane vertices
plane_verts.Bind(Buffer::Target::Array);
{
GLfloat data[4 * 3] = {-9.0f,
0.0f,
-9.0f,
-9.0f,
0.0f,
9.0f,
9.0f,
0.0f,
-9.0f,
9.0f,
0.0f,
9.0f};
Buffer::Data(Buffer::Target::Array, 4 * 3, data);
object_prog.Use();
VertexArrayAttrib attr(object_prog, "Position");
attr.Setup<GLfloat>(3);
attr.Enable();
}
// bind the VBO for the torus normals
plane_normals.Bind(Buffer::Target::Array);
{
GLfloat data[4 * 3] = {-0.1f,
1.0f,
0.1f,
-0.1f,
1.0f,
-0.1f,
0.1f,
1.0f,
0.1f,
0.1f,
1.0f,
-0.1f};
Buffer::Data(Buffer::Target::Array, 4 * 3, data);
object_prog.Use();
VertexArrayAttrib attr(object_prog, "Normal");
attr.Setup<GLfloat>(3);
attr.Enable();
}
Vec3f lightPos(2.0f, 9.0f, 3.0f);
ProgramUniform<Vec3f>(object_prog, "LightPos").Set(lightPos);
ProgramUniform<Vec3f>(shadow_prog, "LightPos").Set(lightPos);
gl.ClearColor(0.2f, 0.2f, 0.2f, 0.0f);
gl.ClearDepth(1.0f);
gl.ClearStencil(0);
gl.Enable(Capability::DepthTest);
gl.Enable(Capability::CullFace);
gl.FrontFace(make_torus.FaceWinding());
}
FBTexThread(FBTexExample& example)
: gl()
, dsa()
, npr()
, text_glyphs(128)
, tex_side(512)
, frame_no(0)
, parent_ready(example.parent_ready)
{
example.thread_ready = &thread_ready;
Texture::Active(0);
example.tex
<< TextureTarget::_2D
<< TextureFilter::Linear
<< TextureWrap::Repeat
<< images::ImageSpec(
tex_side, tex_side,
PixelDataFormat::RGBA,
PixelDataType::UnsignedByte
);
rbo << RenderbufferTarget::Renderbuffer
<< images::ImageSpec(
tex_side, tex_side,
PixelDataInternalFormat::StencilIndex8
);
fbo << FramebufferTarget::Draw
<< FramebufferAttachment::Color << example.tex
<< FramebufferAttachment::Stencil << rbo;
shape.SVGString(
"m 43.371378,37.539671"
"c 13.611668,15.8582"
" 19.209264,30.90734"
" 23.672964,45.82925"
" 3.661218,8.4554"
" 12.165653,10.28682"
" 20.035286,12.9651"
"l 23.240262,-25.01766"
"c -1.46397,-11.60113"
" -7.97625,-19.26946"
" -17.458566,-24.59093"
" -16.102248,-6.17383"
" -32.841826,-7.28036"
" -49.489946,-9.18576"
"z"
"m 69.224042,34.9532"
" -24.470964,26.1184"
"c -0.424168,2.860869"
" 1.771705,3.638839"
" 4.947536,3.651769"
"L 117.01841,76.122411"
"c -0.6978,-1.73312"
" -1.57354,-3.37403"
" -4.42299,-3.62954"
"z"
"m 96.74348,13.86489"
" -3.83844,0.0475"
" -30.37174,32.119769"
" -1.09321,3.59966"
" 21.04835,15.49073"
" 3.9258,-0.73053"
" 30.37173,-32.11976"
" 0.34543,-2.70113"
"z"
"m -90.1373,-8.06177"
" -23.478345,25.779639"
" 34.731575,28.08879"
" 19.92164,-19.41255"
" 6.63604,-2.40327"
" 15.2551,11.02897"
" 1.86981,-4.99851"
"z"
"m 121.25631,22.884729"
" -5.63826,0.64963"
" -34.50826,36.69755"
" 0.17514,2.75441"
" 17.44637,12.03959"
" 1.34218,3.25131"
" -11.42007,14.24354"
" 3.90638,3.5452"
" 3.07023,-2.01334"
" 47.96771,-55.8908"
"c -5.2881,-6.90958"
" -13.00669,-13.42756"
" -22.34142,-15.27709"
"z"
"m -82.97086,12.33038"
" -4.96607,1.44186"
"c -16.74585,15.3575"
" -31.13455,31.43379"
" -42.31266,48.51177"
" 14.32975,15.18082"
" 29.75001,29.95699"
" 50.10018,42.90383"
"l -12.86997,89.36422"
" 76.0707,7.53421"
" 4.08806,-49.56176"
"c 2.63515,-16.68351"
" 11.16889,-28.57327"
" 20.4365,-35.81021"
"l -43.78946,-30.11675"
"c -7.37799,-6.14328"
" -6.76172,-11.95465"
" -30.59946,-14.4867"
" -7.3681,-8.26173"
" -16.91998,-15.58704"
" -17.77179,-25.44079"
"l 3.19111,-1.30899"
"c 5.66966,8.17456"
" 5.04135,19.14781"
" 19.90453,26.63415"
" 16.79016,-0.42901"
" 33.48024,-8.77684"
" 37.51318,-17.5806"
"z"
"m 100.47604,12.17096"
" -41.13754,47.8457"
" -1.28556,3.45416"
" 19.69984,15.03817"
" 3.00685,-2.61745"
" 39.98919,-47.11398"
" 0.20368,-2.96727"
"c -5.20109,-4.99"
" -10.11474,-10.17304"
" -17.87754,-13.34188"
"z"
"m 17.21754,25.10098"
" -2.34127,0.98707"
" -32.55714,39.03611"
" -2.52598,2.98121"
" 15.36908,11.51245"
" 4.68518,0.47953"
" 34.77739,-39.62667"
" -0.55381,-3.64243"
"c -3.06075,-4.58721"
" -10.50061,-10.2548"
" -16.85345,-11.72727"
"z"
"m -72.86065,19.8761"
" -15.2679,3.0925"
"c 26.57114,13.9239"
" 43.79716,29.59996"
" 65.69469,44.40557"
" 31.09815,22.86624"
" 63.72592,40.27978"
" 100.34072,52.54386"
" -19.7004,-24.16603"
" -45.48586,-53.7133"
" -80.19406,-78.6645"
"l -13.63751,16.18691"
" -7.41411,-0.0354"
"z"
"m -60.76927,125.44609"
" -8.79676,44.89633"
" 92.36105,9.4532"
" 3.89632,-45.39793"
"z"
);
GLfloat font_scale = 48;
text_glyphs.GlyphRange(
PathNVFontTarget::Standard,
"Sans",
PathNVFontStyle::Bold,
0, 128,
PathNVMissingGlyph::Use,
~0,
font_scale
);
gl.ClearColor(1.0f, 1.0f, 1.0f, 1.0f);
gl.ClearStencil(0);
gl.StencilMask(~0);
gl.StencilFunc(CompareFunction::NotEqual, 0, 0xFF);
gl.StencilOp(
StencilOperation::Keep,
StencilOperation::Keep,
StencilOperation::Zero
);
gl.Enable(Capability::StencilTest);
gl.Viewport(tex_side, tex_side);
dsa.ProjectionMatrix()
.LoadIdentity()
.Ortho(0, tex_side, 0, tex_side, -1, 1);
GLfloat font_min_max[2];
text_glyphs.GetMetricRange(
PathNVMetricQuery::FontYMinBounds|
PathNVMetricQuery::FontYMaxBounds,
1, 0,
font_min_max
);
font_y_min = font_min_max[0];
font_y_max = font_min_max[1];
font_height = font_y_max - font_y_min;
}
ReflectionExample(void)
: make_cube(0.5,0.5,0.5, 0.1,0.1,0.1, 3,3,3)
, cube_indices(make_cube.Indices())
, cube_instr(make_cube.Instructions())
, prog(make_prog())
, projection_matrix(prog, "ProjectionMatrix")
, camera_matrix(prog, "CameraMatrix")
, model_matrix(prog, "ModelMatrix")
{
gl.Use(prog);
// bind the VAO for the cube
gl.Bind(cube);
// bind the VBO for the cube vertices
gl.Bind(Buffer::Target::Array, cube_verts);
{
std::vector<GLfloat> data;
GLuint n_per_vertex = make_cube.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 cube normals
gl.Bind(Buffer::Target::Array, cube_normals);
{
std::vector<GLfloat> data;
GLuint n_per_vertex = make_cube.Normals(data);
// upload the data
Buffer::Data(Buffer::Target::Array, data);
// setup the vertex attribs array for the normals
VertexArrayAttrib attr(prog, "Normal");
attr.Setup<GLfloat>(n_per_vertex);
attr.Enable();
}
// bind the VAO for the plane
gl.Bind(plane);
// bind the VBO for the plane vertices
gl.Bind(Buffer::Target::Array, plane_verts);
{
GLfloat data[4*3] = {
-2.0f, 0.0f, 2.0f,
-2.0f, 0.0f, -2.0f,
2.0f, 0.0f, 2.0f,
2.0f, 0.0f, -2.0f
};
// upload the data
Buffer::Data(Buffer::Target::Array, 4*3, data);
// setup the vertex attribs array for the vertices
prog.Use();
VertexArrayAttrib attr(prog, "Position");
attr.Setup<Vec3f>();
attr.Enable();
}
// bind the VBO for the cube normals
gl.Bind(Buffer::Target::Array, plane_normals);
{
GLfloat data[4*3] = {
-0.1f, 1.0f, 0.1f,
-0.1f, 1.0f, -0.1f,
0.1f, 1.0f, 0.1f,
0.1f, 1.0f, -0.1f
};
// upload the data
Buffer::Data(Buffer::Target::Array, 4*3, data);
// setup the vertex attribs array for the normals
prog.Use();
VertexArrayAttrib attr(prog, "Normal");
attr.Setup<Vec3f>();
attr.Enable();
}
gl.Bind(NoVertexArray());
Uniform<Vec3f>(prog, "LightPos").Set(1.5, 2.0, 2.5);
//
gl.ClearColor(0.2f, 0.2f, 0.2f, 0.0f);
gl.ClearDepth(1.0f);
gl.ClearStencil(0);
}