diff options
author | pryazha <pryadeiniv@mail.ru> | 2025-02-19 22:26:48 +0500 |
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committer | pryazha <pryadeiniv@mail.ru> | 2025-02-19 22:26:48 +0500 |
commit | f9ad6fa902c1167d7622ee7af2617d14b62bee21 (patch) | |
tree | 9d78792cf360ed871616a9ea66c4237018292aa7 /advanced_opengl/10.antialiasing/shaders/screen.fs | |
parent | 926cbd0d49890772f911e6a6bedb7835605ced89 (diff) |
quite a lot of changes that I, of course, are not going to describe;)
Diffstat (limited to 'advanced_opengl/10.antialiasing/shaders/screen.fs')
-rw-r--r-- | advanced_opengl/10.antialiasing/shaders/screen.fs | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/advanced_opengl/10.antialiasing/shaders/screen.fs b/advanced_opengl/10.antialiasing/shaders/screen.fs deleted file mode 100644 index 183d490..0000000 --- a/advanced_opengl/10.antialiasing/shaders/screen.fs +++ /dev/null @@ -1,119 +0,0 @@ -#version 330 core - -out vec4 frag_color; - -in vec2 tex_coords; - -uniform sampler2D texture1; - -vec4 -inversion() -{ - vec4 result = vec4(1.0-vec3(texture(texture1, tex_coords)), 1.0); - return(result); -} - -vec4 -grayscale_average() -{ - vec4 tex_color = texture(texture1, tex_coords); - float average = (tex_color.r+tex_color.g+tex_color.b)/3.0; - vec4 result = vec4(average, average, average, 1.0); - return(result); -} - -vec4 -grayscale_weights() -{ - vec4 tex_color = texture(texture1, tex_coords); - float average = 0.2126*tex_color.r+0.7152*tex_color.g+0.0722*tex_color.b; - vec4 result = vec4(average, average, average, 1.0); - return(result); -} - -const float offset = 1.0/300.0; - -vec4 -kernel_effect(float[9] kernel) -{ - vec2 offsets[9] = vec2[]( - vec2(-offset, offset), /* top-left */ - vec2(0.0, offset), /* top-center */ - vec2(offset, offset), /* top-right */ - vec2(-offset, 0.0), /* center-left */ - vec2(0.0, 0.0), /* center-center */ - vec2(offset, 0.0), /* center-right */ - vec2(-offset, -offset), /* bottom-left */ - vec2(0.0, -offset), /* bottom-center */ - vec2(offset, -offset) /* bottom-right */ - ); - - vec3 sample_texture[9]; - for (int offset_index = 0; - offset_index < 9; - ++offset_index) - { - sample_texture[offset_index] = - vec3(texture(texture1, tex_coords+offsets[offset_index])); - } - - vec3 color = vec3(0.0); - for (int i = 0; i < 9; ++i) - color += sample_texture[i]*kernel[i]; - - return(vec4(color, 1.0)); -} - -void -main(void) -{ - float strange_kernel[9] = float[]( - -1, -1, -1, - -1, 9, -1, - -1, -1, -1 - ); - - float gaussian_blur_kernel[9] = float[]( - 1.0/16.0, 2.0/16.0, 1.0/16.0, - 2.0/16.0, 4.0/16.0, 2.0/16.0, - 1.0/16.0, 2.0/16.0, 1.0/16.0 - ); - - float box_blur_kernel[9] = float[]( - 1.0/9.0, 1.0/9.0, 1.0/9.0, - 1.0/9.0, 1.0/9.0, 1.0/9.0, - 1.0/9.0, 1.0/9.0, 1.0/9.0 - ); - - float edge_detection_kernel[9] = float[]( - 1.0, 1.0, 1.0, - 1.0, -8.0, 1.0, - 1.0, 1.0, 1.0 - ); - - float sharpening_kernel[9] = float[]( - 0.0, -1.0, 0.0, - -1.0, 5.0, -1.0, - 0.0, -1.0, 0.0 - ); - - float sobel_kernel_vertical[9] = float[]( - -1.0, 0.0, 1.0, - -2.0, 0.0, 2.0, - -1.0, 0.0, 0.0 - ); - float sobel_kernel_horizontal[9] = float[]( - -1.0, -2.0, -1.0, - 0.0, 0.0, 0.0, - 1.0, 2.0, 1.0 - ); - - float funny_kernel[9] = float[]( - 1.0, 1.0, 1.0, - 1.0, -4.0, 1.0, - 1.0, 1.0, 1.0 - ); - - frag_color = kernel_effect(funny_kernel); - frag_color *= vec4(0.76, 0.47, 0.84, 1.0); -} |