91 lines
2.1 KiB
C
91 lines
2.1 KiB
C
#include <GLES2/gl2.h>
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#include "render/gles2.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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// Colored ellipses
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const GLchar ellipse_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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" float l = length(v_texcoord - vec2(0.5, 0.5));\n"
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" if (l > 0.5) {\n"
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" discard;\n"
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" }\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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"uniform bool invert_y;\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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" if (invert_y) {\n"
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" v_texcoord = vec2(texcoord.s, 1.0 - texcoord.t);\n"
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" } else {\n"
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" v_texcoord = texcoord;\n"
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" }\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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"void main() {\n"
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" gl_FragColor = alpha * texture2D(tex, v_texcoord);\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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"void main() {\n"
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" gl_FragColor.rgb = alpha * texture2D(tex, v_texcoord).rgb;\n"
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" gl_FragColor.a = alpha;\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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"void main() {\n"
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" vec4 col = texture2D(texture0, v_texcoord);\n"
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" gl_FragColor = vec4(col.rgb, col.a * alpha);\n"
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"}\n";
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