public SkyShader()
{
ShaderBuilder vert = new ShaderBuilder(ShaderType.VertexShader, false);
vert.AddUniform(ShaderVarType.Mat4, "vp_matrix");
vert.AddAttribute(ShaderVarType.Vec3, "in_vertex");
vert.AddVarying(ShaderVarType.Vec3, "var_texcoord");
vert.Logic = @"
void main(void)
{
vec4 pos = vp_matrix * vec4(in_vertex, 0.0);
gl_Position = pos.xyww;
var_texcoord = in_vertex;
}
";
ShaderBuilder frag = new ShaderBuilder(ShaderType.FragmentShader, false, vert);
frag.AddUniform(ShaderVarType.SamplerCube, "skybox");
frag.Logic = @"
void main(void)
{
out_colour = textureCube(skybox, var_texcoord);
out_colour += (vec4(0.0, 0.0, 0.0, 1.0) - out_colour) * max(0.0, -var_texcoord.y);
}
";
VertexSource = vert.Generate(GL3);
FragmentSource = frag.Generate(GL3);
BeginMode = BeginMode.Quads;
Create();
}
protected WaterEffectShader()
{
ShaderBuilder vert = new ShaderBuilder(ShaderType.VertexShader, true);
vert.AddAttribute(ShaderVarType.Vec2, "in_position");
vert.AddVarying(ShaderVarType.Vec2, "tex_pos");
vert.AddUniform(ShaderVarType.Int, "resolution");
vert.Logic = @"
void main( void )
{
tex_pos = in_position.xy * vec2(1.0, -1.0) / resolution;
gl_Position = in_position;
}
";
ShaderBuilder frag = new ShaderBuilder(ShaderType.FragmentShader, true, vert);
OnAddShaderVariables(frag);
OnAddShaderLogic(frag);
VertexSource = vert.Generate(GL3);
FragmentSource = frag.Generate(GL3);
BeginMode = BeginMode.Quads;
Create();
SetScreenSize(Water.Resolution, Water.Resolution);
_bounds = new float[] {
0f, 0f,
Water.Resolution, 0f,
Water.Resolution, Water.Resolution,
0f, Water.Resolution
};
}
public ModelShader()
{
ShaderBuilder vert = new ShaderBuilder(ShaderType.VertexShader, false);
vert.AddUniform(ShaderVarType.Mat4, "vp_matrix");
vert.AddUniform(ShaderVarType.Mat4, "transform");
vert.AddAttribute(ShaderVarType.Vec3, "in_vertex");
vert.AddAttribute(ShaderVarType.Vec2, "in_textuv");
vert.AddAttribute(ShaderVarType.Vec3, "in_normal");
vert.AddVarying(ShaderVarType.Vec3, "var_normal");
vert.AddVarying(ShaderVarType.Vec2, "var_textuv");
vert.Logic = @"
void main(void)
{
var_normal = (transform * vec4(in_normal, 0.0)).xyz;
var_textuv = in_textuv;
gl_Position = vp_matrix * (transform * vec4(in_vertex, 1.0));
}
";
ShaderBuilder frag = new ShaderBuilder(ShaderType.FragmentShader, false, vert);
frag.AddUniform(ShaderVarType.Vec4, "colour");
frag.AddUniform(ShaderVarType.Sampler2D, "tex");
frag.AddUniform(ShaderVarType.Vec3, "view_vector");
frag.AddUniform(ShaderVarType.Vec3, "light_vector");
frag.AddUniform(ShaderVarType.Float, "shinyness");
frag.Logic = @"
void main(void)
{
out_colour = vec4(colour.rgb * texture2D(tex, var_textuv + vec2(0.5, 0.5)).rgb * (dot(-light_vector, var_normal) * 0.5 + 0.5), colour.a);
if (shinyness > 0.0) {
out_colour = vec4(out_colour.rgb + (vec3(1.0, 1.0, 1.0) - out_colour.rgb) * 0.5 * pow(max(0.0, dot(reflect(-light_vector, var_normal), view_vector)), shinyness), out_colour.a);
}
}
";
VertexSource = vert.Generate(GL3);
FragmentSource = frag.Generate(GL3);
BeginMode = BeginMode.Triangles;
Create();
}
public WaterShader()
{
ShaderBuilder vert = new ShaderBuilder(ShaderType.VertexShader, false);
vert.AddUniform(ShaderVarType.Mat4, "vp_matrix");
vert.AddUniform(ShaderVarType.Vec3, "view_origin");
vert.AddUniform(ShaderVarType.Vec3, "view_vector");
vert.AddUniform(ShaderVarType.Sampler2D, "heightmap");
vert.AddAttribute(ShaderVarType.Vec2, "in_vertex");
vert.AddVarying(ShaderVarType.Float, "var_height");
vert.AddVarying(ShaderVarType.Float, "var_scale");
vert.AddVarying(ShaderVarType.Vec3, "var_position");
vert.AddVarying(ShaderVarType.Vec2, "var_texpos");
vert.Logic = @"
void main(void)
{
const float size = 512.0;
float rot = -atan(view_vector.z, view_vector.x);
mat2 rmat = mat2(cos(rot), -sin(rot), sin(rot), cos(rot));
var_scale = max(0.0, 2.0 - max(1.0, length(in_vertex * size) / 48.0));
vec2 offset = rmat * (in_vertex * size) + view_origin.xz;
var_texpos = offset / 128.0 + vec2(0.5, 0.5);
var_height = texture2D(heightmap, var_texpos).a * 2.0 * var_scale;
vec4 pos = vec4(offset.x, var_height - 1.0, offset.y, 1.0);
var_position = pos.xyz;
gl_Position = vp_matrix * pos;
}
";
ShaderBuilder frag = new ShaderBuilder(ShaderType.FragmentShader, false, vert);
frag.AddUniform(ShaderVarType.Sampler2D, "heightmap");
frag.AddUniform(ShaderVarType.Sampler2D, "ripplemap");
frag.AddUniform(ShaderVarType.Sampler2D, "spraymap");
frag.AddUniform(ShaderVarType.SamplerCube, "skybox");
frag.AddUniform(ShaderVarType.Vec4, "colour");
frag.AddUniform(ShaderVarType.Vec3, "view_origin");
frag.AddUniform(ShaderVarType.Vec3, "light_vector");
frag.Logic = @"
void main(void)
{
float l = textureOffset(heightmap, var_texpos, ivec2(-1, 0 )).a;
float t = textureOffset(heightmap, var_texpos, ivec2( 0, -1 )).a;
float r = textureOffset(heightmap, var_texpos, ivec2( 1, 0 )).a;
float b = textureOffset(heightmap, var_texpos, ivec2( 0, 1 )).a;
vec3 horz = normalize(vec3(0.0, (r - l) * 2.0 * var_scale, 1.0));
vec3 vert = normalize(vec3(1.0, (b - t) * 2.0 * var_scale, 0.0));
vec3 normal = cross(horz, vert);
vec3 cam_dir = normalize(var_position - view_origin);
vec3 reflected = normalize(reflect(cam_dir, normal));
out_colour = vec4(colour.rgb * max(0.0, dot(light_vector, normal)), colour.a);
out_colour += vec4((textureCube(skybox, reflected).rgb - out_colour.rgb) * 0.5, 0.0);
if (var_scale > 0.0) {
float ripple = texture2D(ripplemap, (var_texpos * 8.0) + normal.xz * 0.125).a;
float spray = texture2D(spraymap, var_texpos).a;
if (ripple * pow(spray, 2.0) > 0.75) {
out_colour += spray * 0.75 * (vec4(1.0, 1.0, 1.0, 1.0) - out_colour) * var_scale;
}
}
}
";
VertexSource = vert.Generate(GL3);
FragmentSource = frag.Generate(GL3);
BeginMode = BeginMode.Quads;
Create();
}