twix/raylib
1
0
Fork 0
mirror of https://github.com/raysan5/raylib.git synced 2026-02-03 20:59:18 -05:00
Code Issues Packages Projects Releases Wiki Activity

REVIEWED: Shaders formating to follow raylib code conventions

Browse Source
This commit is contained in:
Ray
2025-08-11 20:22:31 +02:00
parent 8dae39fbda
commit 9b598f6bcf
62 changed files with 797 additions and 797 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
examples/shaders/resources/shaders/glsl330/julia_set.fs
View File

@ -8,11 +8,11 @@ in vec4 fragColor;
out vec4 finalColor;
uniform vec2 c; // c.x = real, c.y = imaginary component. Equation done is z^2 + c
uniform vec2 offset; // Offset of the scale.
uniform float zoom; // Zoom of the scale.
uniform vec2 offset; // Offset of the scale
uniform float zoom; // Zoom of the scale
const int maxIterations = 255; // Max iterations to do.
const float colorCycles = 2.0; // Number of times the color palette repeats. Can show higher detail for higher iteration numbers.
const int maxIterations = 255; // Max iterations to do
const float colorCycles = 2.0; // Number of times the color palette repeats. Can show higher detail for higher iteration numbers
// Square a complex number
vec2 ComplexSquare(vec2 z)
@ -31,22 +31,22 @@ vec3 Hsv2rgb(vec3 c)
void main()
{
/**********************************************************************************************
Julia sets use a function z^2 + c, where c is a constant.
This function is iterated until the nature of the point is determined.
Julia sets use a function z^2 + c, where c is a constant
This function is iterated until the nature of the point is determined
If the magnitude of the number becomes greater than 2, then from that point onward
the number will get bigger and bigger, and will never get smaller (tends towards infinity).
2^2 = 4, 4^2 = 8 and so on.
So at 2 we stop iterating.
the number will get bigger and bigger, and will never get smaller (tends towards infinity)
2^2 = 4, 4^2 = 8 and so on
So at 2 we stop iterating
If the number is below 2, we keep iterating.
If the number is below 2, we keep iterating
But when do we stop iterating if the number is always below 2 (it converges)?
That is what maxIterations is for.
Then we can divide the iterations by the maxIterations value to get a normalized value that we can
then map to a color.
That is what maxIterations is for
Then we can divide the iterations by the maxIterations value to get a normalized value
that we can then map to a color
We use dot product (z.x * z.x + z.y * z.y) to determine the magnitude (length) squared.
And once the magnitude squared is > 4, then magnitude > 2 is also true (saves computational power).
We use dot product (z.x*z.x + z.y*z.y) to determine the magnitude (length) squared
And once the magnitude squared is > 4, then magnitude > 2 is also true (saves computational power)
*************************************************************************************************/
// The pixel coordinates are scaled so they are on the mandelbrot scale
@ -63,18 +63,18 @@ void main()
if (dot(z, z) > 4.0) break;
}
// Another few iterations decreases errors in the smoothing calculation.
// See http://linas.org/art-gallery/escape/escape.html for more information.
// Another few iterations decreases errors in the smoothing calculation
// See http://linas.org/art-gallery/escape/escape.html for more information
z = ComplexSquare(z) + c;
z = ComplexSquare(z) + c;
// This last part smooths the color (again see link above).
// This last part smooths the color (again see link above)
float smoothVal = float(iterations) + 1.0 - (log(log(length(z)))/log(2.0));
// Normalize the value so it is between 0 and 1.
// Normalize the value so it is between 0 and 1
float norm = smoothVal/float(maxIterations);
// If in set, color black. 0.999 allows for some float accuracy error.
// If in set, color black. 0.999 allows for some float accuracy error
if (norm > 0.999) finalColor = vec4(0.0, 0.0, 0.0, 1.0);
else finalColor = vec4(Hsv2rgb(vec3(norm*colorCycles, 1.0, 1.0)), 1.0);
}