public static string GetFragmentSource()
{
return(GetVersion() +
SrgbShader.ToSrgbFunction() +
// uniforms
"layout(binding = 0) uniform sampler2DArray tex;\n" +
"layout(location = 2) uniform float layer;\n" +
"layout(location = 3) uniform float level;\n" +
"layout(location = 4) uniform uint grayscale;\n" +
"layout(location = 6) uniform vec4 crop;\n" +
// in out
"layout(location = 0) in vec3 raydir;\n" +
"out vec4 fragColor;\n" +
"const float PI = 3.14159265358979323846264;" +
"void main(void){\n" +
"vec2 polarDirection;\n" +
// t computation
"vec3 normalizedDirection = normalize(raydir);\n" +
"polarDirection.t = acos(normalizedDirection.y)/PI;\n" +
// s computation
"polarDirection.s = normalizedDirection.x == 0.0 ? " +
"PI/2*sign(normalizedDirection.z) :" +
"atan(normalizedDirection.z, normalizedDirection.x);\n" +
"polarDirection.s = polarDirection.s / (2*PI) + 0.25;\n" +
"if( polarDirection.s < 0.0) polarDirection.s += 1.0;\n" +
"vec4 color = textureLod(tex, vec3(polarDirection.st, layer), level);\n" +
ApplyGrayscale() +
ApplyColorCrop("polarDirection") +
"fragColor = toSrgb(color);\n" +
"}\n");
}
public void Dispose()
{
CheckersShader.Dispose();
Vao.Dispose();
samplerLinear.Dispose();
samplerLinearMip.Dispose();
samplerNearest.Dispose();
samplerNearestMip.Dispose();
TextureCache.Clear();
GetPixelShader.Dispose();
SrgbShader.Dispose();
ExportShader.Dispose();
LinearMaxStatistics.Dispose();
SrgbMaxStatistics.Dispose();
LinearMinStatistics.Dispose();
SrgbMinStatistics.Dispose();
}
public static string GetFragmentSource()
{
return(GetVersion() +
SrgbShader.ToSrgbFunction() +
// uniforms
"layout(binding = 0) uniform samplerCube tex;\n" +
"layout(location = 3) uniform float level;\n" +
"layout(location = 4) uniform uint grayscale;\n" +
// in out
"layout(location = 0) in vec3 viewdir;\n" +
"out vec4 fragColor;\n" +
"void main(void){\n" +
"vec4 color = textureLod(tex, viewdir, level);\n" +
ApplyGrayscale() +
"fragColor = toSrgb(color);\n" +
"}\n");
}
public OpenGlModel(OpenGlContext context, ImagesModel images)
{
Debug.Assert(context.GlEnabled);
Vao = new VertexArray();
CheckersShader = new CheckersShader();
samplerLinear = new Sampler(TextureMinFilter.Linear, TextureMagFilter.Linear);
samplerLinearMip = new Sampler(TextureMinFilter.LinearMipmapLinear, TextureMagFilter.Linear);
samplerNearest = new Sampler(TextureMinFilter.Nearest, TextureMagFilter.Nearest);
samplerNearestMip = new Sampler(TextureMinFilter.NearestMipmapNearest, TextureMagFilter.Nearest);
TextureCache = new TextureCacheModel(images, context);
GetPixelShader = new PixelValueShader();
SrgbShader = new SrgbShader();
ExportShader = new PixelExportShader();
LinearMaxStatistics = new MaxStatistics(false);
SrgbMaxStatistics = new MaxStatistics(true);
LinearMinStatistics = new MinStatistics(false);
SrgbMinStatistics = new MinStatistics(true);
LinearAvgStatistics = new AverageStatistics(false, images);
SrgbAvgStatistics = new AverageStatistics(true, images);
}
public static string GetFragmentSource()
{
return(GetVersion() +
SrgbShader.ToSrgbFunction() +
// uniforms
"layout(binding = 0) uniform sampler2DArray tex;\n" +
"layout(location = 2) uniform float layer;\n" +
"layout(location = 3) uniform float level;\n" +
"layout(location = 4) uniform uint grayscale;\n" +
"layout(location = 5) uniform vec4 crop;\n" +
// in out
"layout(location = 0) in vec2 texcoord;\n" +
"out vec4 fragColor;\n" +
"void main(void){\n" +
"vec4 color = textureLod(tex, vec3(texcoord, layer), level);\n" +
ApplyGrayscale() +
ApplyColorCrop() +
"color = toSrgb(color);\n" +
"fragColor = color;\n" +
"}\n");
}
private static string GenerateShaderSource(string colorFormula, string alphaFormula, int numImages)
{
return(OpenGlContext.ShaderVersion + "\n" +
$"layout(local_size_x = {LocalSize}, local_size_y = {LocalSize}) in;\n" +
// output image
"layout(rgba32f, binding = 0) uniform writeonly image2D out_image;\n" +
// global variables
"ivec2 pixelPos;\n" +
// uniforms
"layout(location = 1) uniform int layer;\n" +
"layout(location = 2) uniform int level;\n" +
SrgbShader.FromSrgbFunction() +
SrgbShader.ToSrgbFunction() +
GetTextureBindings(numImages) +
GetTextureGetters(numImages) +
GetHelperFunctions() +
"void main(){\n" +
"pixelPos = ivec2(gl_GlobalInvocationID.xy);\n" +
"ivec2 imgSize = imageSize(out_image);\n" +
"if(pixelPos.x >= imgSize.x || pixelPos.y >= imgSize.y) return;\n" +
"vec4 color = " + GetImageColor(colorFormula, alphaFormula) + ";\n" +
"imageStore(out_image, pixelPos, color);\n" +
"}\n");
}