From f9ad6fa902c1167d7622ee7af2617d14b62bee21 Mon Sep 17 00:00:00 2001 From: pryazha Date: Wed, 19 Feb 2025 22:26:48 +0500 Subject: quite a lot of changes that I, of course, are not going to describe;) --- advanced_opengl/10.antialiasing/shaders/color.frag | 8 ++ advanced_opengl/10.antialiasing/shaders/color.fs | 9 -- advanced_opengl/10.antialiasing/shaders/color.vert | 11 ++ advanced_opengl/10.antialiasing/shaders/color.vs | 12 --- .../10.antialiasing/shaders/screen.frag | 110 +++++++++++++++++++ advanced_opengl/10.antialiasing/shaders/screen.fs | 119 --------------------- .../10.antialiasing/shaders/screen.vert | 11 ++ advanced_opengl/10.antialiasing/shaders/screen.vs | 12 --- 8 files changed, 140 insertions(+), 152 deletions(-) create mode 100644 advanced_opengl/10.antialiasing/shaders/color.frag delete mode 100644 advanced_opengl/10.antialiasing/shaders/color.fs create mode 100644 advanced_opengl/10.antialiasing/shaders/color.vert delete mode 100644 advanced_opengl/10.antialiasing/shaders/color.vs create mode 100644 advanced_opengl/10.antialiasing/shaders/screen.frag delete mode 100644 advanced_opengl/10.antialiasing/shaders/screen.fs create mode 100644 advanced_opengl/10.antialiasing/shaders/screen.vert delete mode 100644 advanced_opengl/10.antialiasing/shaders/screen.vs (limited to 'advanced_opengl/10.antialiasing/shaders') diff --git a/advanced_opengl/10.antialiasing/shaders/color.frag b/advanced_opengl/10.antialiasing/shaders/color.frag new file mode 100644 index 0000000..b4a31df --- /dev/null +++ b/advanced_opengl/10.antialiasing/shaders/color.frag @@ -0,0 +1,8 @@ +#version 330 core + +out vec4 frag_color; + +void main(void) +{ + frag_color = vec4(0.76, 0.47, 0.84, 1.0); +} diff --git a/advanced_opengl/10.antialiasing/shaders/color.fs b/advanced_opengl/10.antialiasing/shaders/color.fs deleted file mode 100644 index 542143e..0000000 --- a/advanced_opengl/10.antialiasing/shaders/color.fs +++ /dev/null @@ -1,9 +0,0 @@ -#version 330 core - -out vec4 frag_color; - -void -main(void) -{ - frag_color = vec4(0.76, 0.47, 0.84, 1.0); -} diff --git a/advanced_opengl/10.antialiasing/shaders/color.vert b/advanced_opengl/10.antialiasing/shaders/color.vert new file mode 100644 index 0000000..a8b1247 --- /dev/null +++ b/advanced_opengl/10.antialiasing/shaders/color.vert @@ -0,0 +1,11 @@ +#version 330 core +layout(location = 0) in vec3 apos; + +uniform mat4 proj; +uniform mat4 view; +uniform mat4 model; + +void main(void) +{ + gl_Position = proj*view*model*vec4(apos, 1.0); +} diff --git a/advanced_opengl/10.antialiasing/shaders/color.vs b/advanced_opengl/10.antialiasing/shaders/color.vs deleted file mode 100644 index ade669b..0000000 --- a/advanced_opengl/10.antialiasing/shaders/color.vs +++ /dev/null @@ -1,12 +0,0 @@ -#version 330 core -layout(location = 0) in vec3 apos; - -uniform mat4 projection; -uniform mat4 view; -uniform mat4 model; - -void -main(void) -{ - gl_Position = projection*view*model*vec4(apos, 1.0); -} diff --git a/advanced_opengl/10.antialiasing/shaders/screen.frag b/advanced_opengl/10.antialiasing/shaders/screen.frag new file mode 100644 index 0000000..5ccc843 --- /dev/null +++ b/advanced_opengl/10.antialiasing/shaders/screen.frag @@ -0,0 +1,110 @@ +#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 i = 0; i < 9; ++i) + sample_texture[i] = vec3(texture(texture1, tex_coords+offsets[i])); + + 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); +} 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); -} diff --git a/advanced_opengl/10.antialiasing/shaders/screen.vert b/advanced_opengl/10.antialiasing/shaders/screen.vert new file mode 100644 index 0000000..e473ddd --- /dev/null +++ b/advanced_opengl/10.antialiasing/shaders/screen.vert @@ -0,0 +1,11 @@ +#version 330 core +layout(location = 0) in vec3 apos; +layout(location = 1) in vec2 atex_coords; + +out vec2 tex_coords; + +void main(void) +{ + gl_Position = vec4(apos, 1.0); + tex_coords = atex_coords; +} diff --git a/advanced_opengl/10.antialiasing/shaders/screen.vs b/advanced_opengl/10.antialiasing/shaders/screen.vs deleted file mode 100644 index 1f233ee..0000000 --- a/advanced_opengl/10.antialiasing/shaders/screen.vs +++ /dev/null @@ -1,12 +0,0 @@ -#version 330 core -layout(location = 0) in vec3 apos; -layout(location = 1) in vec2 atex_coords; - -out vec2 tex_coords; - -void -main(void) -{ - gl_Position = vec4(apos, 1.0); - tex_coords = atex_coords; -} -- cgit v1.2.3