// X:\jsc.svn\examples\glsl\future\GLSLShaderToyPip\GLSLShaderToyPip\Application.cs
public EffectPass(
AudioContext wa = null,
gl gl = null,
string precission = null,
bool supportDerivatives = false,
RefreshTexturThumbailDelegate callback = null,
object obj = null,
bool forceMuted = false,
bool forcePaused = false,
// createQuadVBO
// ARRAY_BUFFER
WebGLBuffer quadVBO = null,
GainNode outputGainNode = null
)
{
//new IHTMLPre { "enter EffectPass" }.AttachToDocument();
// used by?
var mFrame = 0;
// http://math.hws.edu/eck/cs424/notes2013/19_GLSL.html
// http://stackoverflow.com/questions/10079368/how-would-i-do-environment-reflection-in-webgl-without-using-a-library-like-thre
this.MakeHeader_Image = delegate
{
#region MakeHeader_Image
//new IHTMLPre { "enter MakeHeader_Image" }.AttachToDocument();
var header = precission;
var headerlength = 3;
if (supportDerivatives) { header += "#extension GL_OES_standard_derivatives : enable\n"; headerlength++; }
header += "uniform vec3 iResolution;\n" +
"uniform float iGlobalTime;\n" +
"uniform float iChannelTime[4];\n" +
"uniform vec4 iMouse;\n" +
"uniform vec4 iDate;\n" +
"uniform float iSampleRate;\n" +
"uniform vec3 iChannelResolution[4];\n";
// not to be used by the hosted shader, but by our code in the middle on the gpu.
// gpu code injection. first take.
//"uniform float fZoom;\n";
headerlength += 7;
for (var i = 0; i < mInputs.Length; i++)
{
var inp = mInputs[i];
// X:\jsc.svn\examples\javascript\chrome\apps\WebGL\ChromeShaderToyVRCardboardGrid\ChromeShaderToyVRCardboardGrid\Application.cs
//if (inp != null && inp.mInfo.mType == "cubemap")
if (inp is samplerCube)
{
new IHTMLPre { "add MakeHeader_Image samplerCube" }.AttachToDocument();
var tex = new WebGLTexture(gl);
// http://stackoverflow.com/questions/10079368/how-would-i-do-environment-reflection-in-webgl-without-using-a-library-like-thre
// view-source:https://www.shadertoy.com/js/effect.js
// um can there be only one samplerCube?
gl.activeTexture(gl.TEXTURE0);
//gl.enable(gl.TEXTURE_CUBE_MAP);
gl.bindTexture(gl.TEXTURE_CUBE_MAP, tex);
//gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_WRAP_S, (int)gl.CLAMP_TO_EDGE);
//gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_WRAP_T, (int)gl.CLAMP_TO_EDGE);
gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MIN_FILTER, (int)gl.LINEAR);
gl.texParameteri(gl.TEXTURE_CUBE_MAP, gl.TEXTURE_MAG_FILTER, (int)gl.LINEAR);
//var cube0 = new IHTMLImage[] {
// new HTML.Images.FromAssets.cube02_0(),
// new HTML.Images.FromAssets.cube02_1(),
// new HTML.Images.FromAssets.cube02_2(),
// new HTML.Images.FromAssets.cube02_3(),
// new HTML.Images.FromAssets.cube02_4(),
// new HTML.Images.FromAssets.cube02_5()
//};
//public const uint TEXTURE_CUBE_MAP_POSITIVE_X = 34069;
//public const uint TEXTURE_CUBE_MAP_NEGATIVE_X = 34070;
//public const uint TEXTURE_CUBE_MAP_POSITIVE_Y = 34071;
//public const uint TEXTURE_CUBE_MAP_NEGATIVE_Y = 34072;
//public const uint TEXTURE_CUBE_MAP_POSITIVE_Z = 34073;
//public const uint TEXTURE_CUBE_MAP_NEGATIVE_Z = 34074;
//rawArrays: texture bound to texture unit 0 is not renderable.It maybe non - power - of - 2 and have incompatible texture filtering or is not 'texture complete'.
new IHTMLPre { "about to load TEXTURE_CUBE_MAP" }.AttachToDocument();
var cube0 = new IHTMLImage[] {
new CSS3DPanoramaByHumus.HTML.Images.FromAssets.humus_px(),
new CSS3DPanoramaByHumus.HTML.Images.FromAssets.humus_nx(),
new CSS3DPanoramaByHumus.HTML.Images.FromAssets.humus_py(),
new CSS3DPanoramaByHumus.HTML.Images.FromAssets.humus_ny(),
new CSS3DPanoramaByHumus.HTML.Images.FromAssets.humus_pz(),
new CSS3DPanoramaByHumus.HTML.Images.FromAssets.humus_nz()
};
cube0.WithEachIndex(
(pendingimg, index) =>
{
pendingimg.InvokeOnComplete(
img =>
{
gl.bindTexture(gl.TEXTURE_CUBE_MAP, tex);
//gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, false);
gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, 0);
gl.texImage2D(gl.TEXTURE_CUBE_MAP_POSITIVE_X + (uint)index, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, img);
new IHTMLPre { "add MakeHeader_Image samplerCube TEXTURE_CUBE_MAP_POSITIVE_X + " + new { index } }.AttachToDocument();
if (index == 5)
{
new IHTMLPre { "add MakeHeader_Image samplerCube activeTexture " }.AttachToDocument();
// samplerCube iChannel0; = 0 = TEXTURE0
}
// https://code.google.com/p/opengles-book-samples/source/browse/trunk/WebGL/Chapter_9/Simple_TextureCubemap/Simple_TextureCubemap.html?r=5
// http://stackoverflow.com/questions/31665132/gl-invalid-operation-caused-by-samplercube
// http://forum.processing.org/two/discussion/7039/samplercube-and-ambient-reflection
}
);
}
);
header += "uniform samplerCube iChannel" + i + ";\n";
}
else
{
//new IHTMLPre { "add MakeHeader_Image sampler2D" }.AttachToDocument();
header += "uniform sampler2D iChannel" + i + ";\n";
}
// dont need it?
headerlength++;
}
// rror CreateShader {{ infoLog = ERROR: 0:250: 'assign' : l-value required "gl_FragCoord" (can't modify gl_FragCoord)
// ERROR: 0:251: 'assign' : l - value required "gl_FragCoord"(can't modify gl_FragCoord)
//}}
// error CreateShader {{ infoLog = ERROR: 0:253: '=' : cannot convert from 'FragCoord mediump 4-component vector of float' to 'highp 2-component vector of float'
var mImagePassFooter = @"
void main( void )
{
vec4 color = gl_FragColor;
color.a = 1.0;
mainImage( color, gl_FragCoord.xy );
gl_FragColor = color;
}
";
#endregion
this.NewShader_Image = (fs) =>
{
#region NewShader_Image
//new IHTMLPre { "enter NewShader_Image" }.AttachToDocument();
var shaderCode = fs.ToString();
// is that it?
var vsSource = "attribute vec2 pos; void main() { gl_Position = vec4(pos.xy,0.0,1.0); }";
var fsSource = header + shaderCode + mImagePassFooter;
this.xCreateShader = CreateShader(gl, vsSource, fsSource, false);
#endregion
var vbo = new WebGLBuffer(gl);
#region calledby
//EffectPass.Paint_Image(effect.js:724)
//EffectPass.Paint(effect.js:1038)
//Effect.Paint(effect.js:1247)
//renderLoop2(pgWatch.js:404)
//ShaderToy.startRendering(pgWatch.js:420)
//watchInit(pgWatch.js:1386)
//onload(Xls3WS: 78)
#endregion
this.Paint_Image = (time, mouseOriX, mouseOriY, mousePosX, mousePosY, zoom) =>
{
var mProgram = xCreateShader.mProgram;
var xres = gl.canvas.width * zoom;
var yres = gl.canvas.height * zoom;
#region Paint_Image
//new IHTMLPre { "enter Paint_Image" }.AttachToDocument();
// this is enough to do pip to bottom left, no need to adjust vertex positions even?
gl.viewport(0, 0, (int)xres, (int)yres);
// useProgram: program not valid
gl.useProgram(mProgram);
// uniform4fv
var uniform4fv_mouse = new[] { mousePosX, mousePosY, mouseOriX, mouseOriY };
// X:\jsc.svn\examples\glsl\future\GLSLShaderToyPip\GLSLShaderToyPip\Application.cs
//gl.getUniformLocation(mProgram, "fZoom").With(fZoom => gl.uniform1f(fZoom, zoom));
var l2 = gl.getUniformLocation(mProgram, "iGlobalTime"); if (l2 != null) gl.uniform1f(l2, time);
var l3 = gl.getUniformLocation(mProgram, "iResolution"); if (l3 != null) gl.uniform3f(l3, xres, yres, 1.0f);
var l4 = gl.getUniformLocation(mProgram, "iMouse"); if (l4 != null) gl.uniform4fv(l4, uniform4fv_mouse);
// X:\jsc.svn\examples\javascript\chrome\apps\WebGL\synergy\SimpleDigitalClock\SimpleDigitalClock\Application.cs
// uniform vec4 iDate; // (year, month, day, time in seconds)
// http://bytes.com/topic/c-sharp/answers/258829-time-elapsed-since-midnight-c
var now = DateTime.Now;
//var sinceMidnight = now - DateTime.Today;
var sinceMidnight = now - now.Date;
var uniform4fv_dates = new float[] { now.Year, now.Month, now.Day, (float)sinceMidnight.TotalSeconds };
var l7 = gl.getUniformLocation(mProgram, "iDate"); if (l7 != null) gl.uniform4fv(l7, uniform4fv_dates);
//var l9 = gl.getUniformLocation(this.mProgram, "iSampleRate"); if (l9 != null) gl.uniform1f(l9, this.mSampleRate);
//var ich0 = gl.getUniformLocation(mProgram, "iChannel0"); if (ich0 != null) gl.uniform1i(ich0, 0);
//var ich1 = gl.getUniformLocation(mProgram, "iChannel1"); if (ich1 != null) gl.uniform1i(ich1, 1);
//var ich2 = gl.getUniformLocation(mProgram, "iChannel2"); if (ich2 != null) gl.uniform1i(ich2, 2);
//var ich3 = gl.getUniformLocation(mProgram, "iChannel3"); if (ich3 != null) gl.uniform1i(ich3, 3);
// what if there are other textures too?
// X:\jsc.svn\examples\javascript\chrome\apps\WebGL\ChromeWebGLFrameBuffer\ChromeWebGLFrameBuffer\Application.cs
//for (var i = 0; i < mInputs.Length; i++)
//{
// var inp = mInputs[i];
// gl.activeTexture((uint)(gl.TEXTURE0 + i));
// if (inp == null)
// {
// gl.bindTexture(gl.TEXTURE_2D, null);
// }
//}
var times = new[] { 0.0f, 0.0f, 0.0f, 0.0f };
var l5 = gl.getUniformLocation(mProgram, "iChannelTime");
if (l5 != null) gl.uniform1fv(l5, times);
var resos = new float[12] { 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f };
var l8 = gl.getUniformLocation(mProgram, "iChannelResolution");
if (l8 != null) gl.uniform3fv(l8, resos);
// using ?
var vec2pos = (uint)gl.getAttribLocation(mProgram, "pos");
//gl.bindBuffer(gl.ARRAY_BUFFER, quadVBO);
gl.bindBuffer(gl.ARRAY_BUFFER, vbo);
#region vertices
float left = -1.0f;
// y reversed?
float bottom = -1.0f;
float right = 1.0f;
float top = 1.0f;
var fvertices =
new float[]
{
// left top
left, bottom,
// right top
//right, -1.0f,
right, bottom,
// left bottom
left, top,
// right top
//right, -1.0f,
right, bottom,
// right bottom
//right, 1.0f,
right, top,
// left bottom
left,top
};
#endregion
gl.bufferData(gl.ARRAY_BUFFER, fvertices, gl.STATIC_DRAW);
gl.vertexAttribPointer(vec2pos, 2, gl.FLOAT, false, 0, 0);
gl.enableVertexAttribArray(vec2pos);
//var iChannel0 = gl.getUniformLocation(mProgram, "iChannel0");
// GL ERROR :GL_INVALID_OPERATION : glDrawArrays: attempt to render with no buffer attached to enabled attribute 1
gl.drawArrays(gl.TRIANGLES, 0, 6);
// first frame is now visible
gl.disableVertexAttribArray(vec2pos);
gl.bindBuffer(gl.ARRAY_BUFFER, null);
#endregion
mFrame++;
};
};
};
}