147 lines
4.5 KiB
C
147 lines
4.5 KiB
C
#ifndef _SWAY_SHADERS_H
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#define _SWAY_SHADERS_H
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// Colored quads
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const GLchar quad_vertex_src[] =
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"uniform mat3 proj;\n"
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"uniform vec4 color;\n"
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"attribute vec2 pos;\n"
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"attribute vec2 texcoord;\n"
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"varying vec4 v_color;\n"
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"varying vec2 v_texcoord;\n"
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"\n"
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"void main() {\n"
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" gl_Position = vec4(proj * vec3(pos, 1.0), 1.0);\n"
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" v_color = color;\n"
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" v_texcoord = texcoord;\n"
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"}\n";
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const GLchar quad_fragment_src[] =
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"precision mediump float;\n"
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"varying vec4 v_color;\n"
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"varying vec2 v_texcoord;\n"
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"\n"
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"void main() {\n"
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" gl_FragColor = v_color;\n"
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"}\n";
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// Textured quads
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const GLchar tex_vertex_src[] =
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"uniform mat3 proj;\n"
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"attribute vec2 pos;\n"
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"attribute vec2 texcoord;\n"
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"varying vec2 v_texcoord;\n"
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"\n"
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"void main() {\n"
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" gl_Position = vec4(proj * vec3(pos, 1.0), 1.0);\n"
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" v_texcoord = texcoord;\n"
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"}\n";
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const GLchar tex_fragment_src_rgba[] =
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"precision mediump float;\n"
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"varying vec2 v_texcoord;\n"
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"uniform sampler2D tex;\n"
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"uniform float alpha;\n"
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"\n"
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"uniform float width;\n"
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"uniform float height;\n"
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"uniform vec2 position;\n"
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"uniform float radius;\n"
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"\n"
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"void main() {\n"
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" gl_FragColor = texture2D(tex, v_texcoord) * alpha;\n"
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" vec2 corner_distance = min(gl_FragCoord.xy - position, position + vec2(width, height) - gl_FragCoord.xy);\n"
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" if (max(corner_distance.x, corner_distance.y) < radius) {\n"
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" float d = radius - distance(corner_distance, vec2(radius, radius));\n"
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" float smooth = smoothstep(-1.0f, 1.0f, d);\n"
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" gl_FragColor = mix(vec4(0), gl_FragColor, smooth);\n"
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" }\n"
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"}\n";
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const GLchar tex_fragment_src_rgbx[] =
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"precision mediump float;\n"
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"varying vec2 v_texcoord;\n"
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"uniform sampler2D tex;\n"
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"uniform float alpha;\n"
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"\n"
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"uniform float width;\n"
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"uniform float height;\n"
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"uniform vec2 position;\n"
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"uniform float radius;\n"
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"\n"
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"void main() {\n"
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" gl_FragColor = vec4(texture2D(tex, v_texcoord).rgb, 1.0) * alpha;\n"
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" vec2 corner_distance = min(gl_FragCoord.xy - position, position + vec2(width, height) - gl_FragCoord.xy);\n"
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" if (max(corner_distance.x, corner_distance.y) < radius) {\n"
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" float d = radius - distance(corner_distance, vec2(radius, radius));\n"
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" float smooth = smoothstep(-1.0f, 1.0f, d);\n"
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" gl_FragColor = mix(vec4(0), gl_FragColor, smooth);\n"
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" }\n"
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"}\n";
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const GLchar tex_fragment_src_external[] =
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"#extension GL_OES_EGL_image_external : require\n\n"
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"precision mediump float;\n"
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"varying vec2 v_texcoord;\n"
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"uniform samplerExternalOES texture0;\n"
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"uniform float alpha;\n"
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"\n"
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"uniform float width;\n"
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"uniform float height;\n"
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"uniform vec2 position;\n"
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"uniform float radius;\n"
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"\n"
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"void main() {\n"
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" gl_FragColor = texture2D(texture0, v_texcoord) * alpha;\n"
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" vec2 corner_distance = min(gl_FragCoord.xy - position, position + vec2(width, height) - gl_FragCoord.xy);\n"
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" if (max(corner_distance.x, corner_distance.y) < radius) {\n"
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" float d = radius - distance(corner_distance, vec2(radius, radius));\n"
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" float smooth = smoothstep(-1.0f, 1.0f, d);\n"
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" gl_FragColor = mix(vec4(0), gl_FragColor, smooth);\n"
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" }\n"
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"}\n";
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const GLchar frag_blur_1[] =
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"precision mediump float;\n"
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"varying mediump vec2 v_texcoord; // is in 0-1\n"
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"uniform sampler2D tex;\n"
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"\n"
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"uniform float radius;\n"
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"uniform vec2 halfpixel;\n"
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"\n"
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"void main() {\n"
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" vec2 uv = v_texcoord * 2.0;\n"
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"\n"
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" vec4 sum = texture2D(tex, uv) * 4.0;\n"
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" sum += texture2D(tex, uv - halfpixel.xy * radius);\n"
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" sum += texture2D(tex, uv + halfpixel.xy * radius);\n"
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" sum += texture2D(tex, uv + vec2(halfpixel.x, -halfpixel.y) * radius);\n"
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" sum += texture2D(tex, uv - vec2(halfpixel.x, -halfpixel.y) * radius);\n"
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" gl_FragColor = sum / 8.0;\n"
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"}\n";
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const GLchar frag_blur_2[] =
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"precision mediump float;\n"
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"varying mediump vec2 v_texcoord; // is in 0-1\n"
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"uniform sampler2D tex;\n"
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"\n"
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"uniform float radius;\n"
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"uniform vec2 halfpixel;\n"
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"\n"
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"void main() {\n"
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" vec2 uv = v_texcoord / 2.0;\n"
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"\n"
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" vec4 sum = texture2D(tex, uv + vec2(-halfpixel.x * 2.0, 0.0) * radius);\n"
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"\n"
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" sum += texture2D(tex, uv + vec2(-halfpixel.x, halfpixel.y) * radius) * 2.0;\n"
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" sum += texture2D(tex, uv + vec2(0.0, halfpixel.y * 2.0) * radius);\n"
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" sum += texture2D(tex, uv + vec2(halfpixel.x, halfpixel.y) * radius) * 2.0;\n"
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" sum += texture2D(tex, uv + vec2(halfpixel.x * 2.0, 0.0) * radius);\n"
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" sum += texture2D(tex, uv + vec2(halfpixel.x, -halfpixel.y) * radius) * 2.0;\n"
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" sum += texture2D(tex, uv + vec2(0.0, -halfpixel.y * 2.0) * radius);\n"
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" sum += texture2D(tex, uv + vec2(-halfpixel.x, -halfpixel.y) * radius) * 2.0;\n"
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"\n"
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" gl_FragColor = sum / 12.0;\n"
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"}\n";
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#endif
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