public FireMaterial()
{
if (Texture == null)
{
var img = Png.Decode("flame.png", File.OpenRead("flame.png"));
img.FlipY();
Texture = new Texture(img, true);
}
}
static List <Material> FromSkin(OESSkin skin, ZipArchive zip) =>
skin.Find <OESMaterial>().Select(mat => {
if (mat.Find <OESEffect>().Any(x => x.Name == "fire"))
{
return(null); // TODO: Unhack
}
return(new Material(
(mat.Transparent ? MaterialFlag.Translucent : MaterialFlag.Normal) |
(mat.AlphaMask ? MaterialFlag.Masked : MaterialFlag.Normal),
mat.Find <OESEffect>().FirstOrDefault(x => x.Name == "animated")?.Get <uint>("speed") ?? 0,
mat.Find <OESTexture>().Select(x => {
using (var tzs = zip.GetEntry(x.Filename).Open())
return Png.Decode(tzs);
}).ToArray()
));
}).ToList();
static List <Material> FromSkin(OESSkin skin, ZipArchive zip) =>
skin.Find <OESMaterial>().Select(mat => {
var effect = mat.Find <OESEffect>().FirstOrDefault();
effect = effect ?? new OESEffect("default");
var textures = mat.Find <OESTexture>().Select(x => {
using (var tzs = zip.GetEntry(x.Filename)?.Open())
return(Png.Decode(Path.GetFileName(x.Filename), tzs));
}).ToArray();
switch (effect.Name)
{
case "default":
case "animated":
var aniSpeed = effect.Name == "animated" ? (uint)effect["speed"] / 1000f : 0;
if (mat.Transparent)
{
return(mat.AlphaMask
? (Material) new ForwardDiffuseMaskedMaterial(textures, aniSpeed)
: new ForwardDiffuseMaterial(textures, aniSpeed));
}
else
{
return(mat.AlphaMask
? (Material) new DeferredDiffuseMaskedMaterial(textures, aniSpeed)
: new DeferredDiffuseMaterial(textures, aniSpeed));
}
case "diffuse+normal":
return(new DeferredDiffuseNormalMaterial(textures));
case "fire":
return(new FireMaterial());
default:
throw new NotImplementedException($"Unknown OESEffect name: {effect.Name}");
}
}).ToList();
public FireMaterial()
{
if (Program == null)
{
Program = new Program(@"
#version 410
precision highp float;
layout (location = 0) in vec4 aPosition;
layout (location = 1) in vec3 aNormal;
layout (location = 2) in vec2 aTexCoord;
layout (location = 3) in mat4 aModelMat;
uniform mat4 uProjectionViewMat;
out vec3 vPosition;
out vec2 vTexCoord;
void main() {
vec4 pos = aModelMat * aPosition;
gl_Position = uProjectionViewMat * pos;
vPosition = pos.xyz;
vTexCoord = aTexCoord;
}
" , @"
#version 410
precision highp float;
in vec3 vPosition;
in vec2 vTexCoord;
out vec4 color;
uniform float uTime;
uniform sampler2D uTex;
vec4 fire(float time, vec2 tc) {
// Generate noisy x value
vec2 n0Uv = vec2(tc.x*1.4 + 0.01, tc.y - time*0.69);
vec2 n1Uv = vec2(tc.x*0.5 - 0.033, tc.y*2.0 - time*0.12);
vec2 n2Uv = vec2(tc.x*0.94 + 0.02, tc.y*3.0 - time*0.61);
float n0 = (texture(uTex, n0Uv).w-0.5)*2.0;
float n1 = (texture(uTex, n1Uv).w-0.5)*2.0;
float n2 = (texture(uTex, n2Uv).w-0.5)*2.0;
float noiseA = clamp(n0 + n1 + n2, -1.0, 1.0);
// Generate noisy y value
vec2 n0UvB = vec2(tc.x*0.7 - 0.01, tc.y - time*0.27);
vec2 n1UvB = vec2(tc.x*0.45 + 0.033, tc.y*1.9 - time*0.71);
vec2 n2UvB = vec2(tc.x*0.8 - 0.02, tc.y*2.5 - time*0.63);
float n0B = (texture(uTex, n0UvB).w-0.5)*2.0;
float n1B = (texture(uTex, n1UvB).w-0.5)*2.0;
float n2B = (texture(uTex, n2UvB).w-0.5)*2.0;
float noiseB = clamp(n0B + n1B + n2B, -1.0, 1.0);
vec2 finalNoise = vec2(noiseA, noiseB);
float perturb = (1.0 - tc.y) * 0.35 + 0.02;
finalNoise = (finalNoise * perturb) + tc - 0.02;
vec4 ret = texture(uTex, finalNoise);
ret = vec4(ret.x*2.0, ret.y*0.9, (ret.y/ret.x)*0.2, 1.0);
finalNoise = clamp(finalNoise, 0.05, 1.0);
ret.w = texture(uTex, finalNoise).z*2.0;
ret.w = ret.w*texture(uTex, tc / vec2(1.3, 1.5)).z;
ret *= vec4(1.0, 1.3, 0.5, 0.6);
return ret;
}
void main() {
float time = uTime * 1.3 + length(vPosition);
vec2 tc = abs(mod(vTexCoord, 1));
if(tc.y > .95) discard;
color = (fire(mod(time, 10), tc) + fire(mod(time + .05, 10), tc)) / 2;
}
" );
Program.SetUniform("uTex", 0);
var img = Png.Decode(File.OpenRead("flame.png"));
img.FlipY();
Texture = new Texture(img, true);
}
}
public Mesh(Material material, float[] vdata, uint[] indices, Matrix4x4[] modelMatrices)
{
if (DeferredProgram == null)
{
DeferredProgram = new Program(@"
#version 410
precision highp float;
layout (location = 0) in vec4 aPosition;
layout (location = 1) in vec3 aNormal;
layout (location = 2) in vec2 aTexCoord;
layout (location = 3) in mat4 aModelMat;
uniform mat4 uProjectionViewMat;
out vec2 vTexCoord;
void main() {
gl_Position = uProjectionViewMat * aModelMat * aPosition;
vTexCoord = aTexCoord;
}
" , @"
#version 410
precision highp float;
in vec3 vPosition;
in vec2 vTexCoord;
layout (location = 0) out vec4 color;
uniform sampler2D uTex;
uniform bool uMasked;
void main() {
color = texture(uTex, vTexCoord);
if(uMasked && color.a < 0.5)
discard;
color.a = 0;
}
" );
ForwardProgram = new Program(@"
#version 410
precision highp float;
layout (location = 0) in vec4 aPosition;
layout (location = 1) in vec3 aNormal;
layout (location = 2) in vec2 aTexCoord;
layout (location = 3) in mat4 aModelMat;
uniform mat4 uProjectionViewMat;
out vec2 vTexCoord;
void main() {
gl_Position = uProjectionViewMat * aModelMat * aPosition;
vTexCoord = aTexCoord;
}
" , @"
#version 410
precision highp float;
in vec3 vPosition;
in vec2 vTexCoord;
out vec4 color;
uniform sampler2D uTex;
uniform bool uMasked;
void main() {
color = texture(uTex, vTexCoord);
if(uMasked)
color.a *= (color.r + color.g + color.b) / 3;
}
" );
// Credit: http://clockworkchilli.com/blog/8_a_fire_shader_in_glsl_for_your_webgl_games
FireProgram = new Program(@"
#version 410
precision highp float;
layout (location = 0) in vec4 aPosition;
layout (location = 1) in vec3 aNormal;
layout (location = 2) in vec2 aTexCoord;
layout (location = 3) in mat4 aModelMat;
uniform mat4 uProjectionViewMat;
out vec3 vPosition;
out vec2 vTexCoord;
void main() {
vec4 pos = aModelMat * aPosition;
gl_Position = uProjectionViewMat * pos;
vPosition = pos.xyz;
vTexCoord = aTexCoord;
}
" , @"
#version 410
precision highp float;
in vec3 vPosition;
in vec2 vTexCoord;
out vec4 color;
uniform float uTime;
uniform sampler2D uTex;
vec4 fire(float time, vec2 tc) {
// Generate noisy x value
vec2 n0Uv = vec2(tc.x*1.4 + 0.01, tc.y - time*0.69);
vec2 n1Uv = vec2(tc.x*0.5 - 0.033, tc.y*2.0 - time*0.12);
vec2 n2Uv = vec2(tc.x*0.94 + 0.02, tc.y*3.0 - time*0.61);
float n0 = (texture(uTex, n0Uv).w-0.5)*2.0;
float n1 = (texture(uTex, n1Uv).w-0.5)*2.0;
float n2 = (texture(uTex, n2Uv).w-0.5)*2.0;
float noiseA = clamp(n0 + n1 + n2, -1.0, 1.0);
// Generate noisy y value
vec2 n0UvB = vec2(tc.x*0.7 - 0.01, tc.y - time*0.27);
vec2 n1UvB = vec2(tc.x*0.45 + 0.033, tc.y*1.9 - time*0.71);
vec2 n2UvB = vec2(tc.x*0.8 - 0.02, tc.y*2.5 - time*0.63);
float n0B = (texture(uTex, n0UvB).w-0.5)*2.0;
float n1B = (texture(uTex, n1UvB).w-0.5)*2.0;
float n2B = (texture(uTex, n2UvB).w-0.5)*2.0;
float noiseB = clamp(n0B + n1B + n2B, -1.0, 1.0);
vec2 finalNoise = vec2(noiseA, noiseB);
float perturb = (1.0 - tc.y) * 0.35 + 0.02;
finalNoise = (finalNoise * perturb) + tc - 0.02;
vec4 ret = texture(uTex, finalNoise);
ret = vec4(ret.x*2.0, ret.y*0.9, (ret.y/ret.x)*0.2, 1.0);
finalNoise = clamp(finalNoise, 0.05, 1.0);
ret.w = texture(uTex, finalNoise).z*2.0;
ret.w = ret.w*texture(uTex, tc / vec2(1.3, 1.5)).z;
ret *= vec4(1.0, 1.3, 0.5, 0.6);
return ret;
}
void main() {
float time = uTime * 1.3 + length(vPosition);
vec2 tc = mod(vTexCoord, 1);
if(tc.y > .95) discard;
color = (fire(mod(time, 10), tc) + fire(mod(time + .05, 10), tc)) / 2;
}
" );
var img = Png.Decode(File.OpenRead("flame.png"));
img.FlipY();
FlameTexture = new Texture(img, true);
}
Material = material;
GL.BindVertexArray(Vao = GL.GenVertexArray());
GL.BindBuffer(BufferTarget.ElementArrayBuffer, Ibo = GL.GenBuffer());
GL.BufferData(BufferTarget.ElementArrayBuffer, indices.Length * 4, indices, BufferUsageHint.StaticDraw);
GL.BindBuffer(BufferTarget.ArrayBuffer, Pbo = GL.GenBuffer());
GL.BufferData(BufferTarget.ArrayBuffer, vdata.Length * 4, vdata, BufferUsageHint.StaticDraw);
var pp = 0; // aPosition
GL.EnableVertexAttribArray(pp);
GL.VertexAttribPointer(pp, 3, VertexAttribPointerType.Float, false, (3 + 3 + 2) * 4, 0);
pp = 1; // aNormal
GL.EnableVertexAttribArray(pp);
GL.VertexAttribPointer(pp, 3, VertexAttribPointerType.Float, false, (3 + 3 + 2) * 4, 3 * 4);
pp = 2; // aTexCoord
GL.EnableVertexAttribArray(pp);
GL.VertexAttribPointer(pp, 2, VertexAttribPointerType.Float, false, (3 + 3 + 2) * 4, (3 + 3) * 4);
GL.BindBuffer(BufferTarget.ArrayBuffer, Mbo = GL.GenBuffer());
GL.BufferData(BufferTarget.ArrayBuffer, modelMatrices.Length * 16 * 4,
modelMatrices.Select(x => x.AsArray()).SelectMany(x => x).ToArray(), BufferUsageHint.StaticDraw);
pp = 3; // aModelMat
GL.EnableVertexAttribArray(pp);
GL.VertexAttribPointer(pp, 4, VertexAttribPointerType.Float, false, 4 * 16, 0);
GL.VertexAttribDivisor(pp, 1);
GL.EnableVertexAttribArray(pp + 1);
GL.VertexAttribPointer(pp + 1, 4, VertexAttribPointerType.Float, false, 4 * 16, 4 * 4);
GL.VertexAttribDivisor(pp + 1, 1);
GL.EnableVertexAttribArray(pp + 2);
GL.VertexAttribPointer(pp + 2, 4, VertexAttribPointerType.Float, false, 4 * 16, 8 * 4);
GL.VertexAttribDivisor(pp + 2, 1);
GL.EnableVertexAttribArray(pp + 3);
GL.VertexAttribPointer(pp + 3, 4, VertexAttribPointerType.Float, false, 4 * 16, 12 * 4);
GL.VertexAttribDivisor(pp + 3, 1);
ElementCount = indices.Length;
InstanceCount = modelMatrices.Length;
}