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solvespace/res/shaders/mesh_fill.frag

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Implement an OpenGL 2 renderer. There are two main reasons to desire an OpenGL 2 renderer: 1. Compatibility. The compatibility profile, ironically, does not offer a lot of compatibility, and our OpenGL 1 renderer will not run on Android, iOS, or WebGL. 2. Performance. The immediate mode does not scale, and in fact becomes very slow with only a moderate amount of lines on screen, and only a somewhat large amount of triangles. This commit implements a basic OpenGL 2 renderer that uses only features from the (OpenGL 3.2) core profile. It is not yet faster than the OpenGL 1 renderer, primarily because it uses a lot of small draw calls. This commit uses OpenGL 2 on Linux and Mac OS X directly (i.e. links to the GL symbols from version 2+); on Windows this is impossible with the default drivers, so for now OpenGL 1 is still used there.
2016-06-30 15:54:35 +00:00
//-----------------------------------------------------------------------------
// SolveSpace Mesh rendering shader
//
// Copyright 2016 Aleksey Egorov
//-----------------------------------------------------------------------------
uniform vec4 color;
uniform sampler2D texture;
void main() {
Add OpenGL 2 support on Windows using ANGLE. This commit performs two main changes: * Alters the shaders to use only strictly conformant GLSL 2.0. * Alters the Windows UI to use ANGLE via GL ES 2.0 and EGL 1.4. This commit also drops official support for Windows XP, since ANGLE requires a non-XP toolset to build. It is still possible to build SolveSpace for Windows XP using: cmake -T v120_xp -DOPENGL=1
2016-11-16 02:22:10 +00:00
if(texture2D(texture, gl_FragCoord.xy / 32.0).a < 0.5) discard;
Implement an OpenGL 2 renderer. There are two main reasons to desire an OpenGL 2 renderer: 1. Compatibility. The compatibility profile, ironically, does not offer a lot of compatibility, and our OpenGL 1 renderer will not run on Android, iOS, or WebGL. 2. Performance. The immediate mode does not scale, and in fact becomes very slow with only a moderate amount of lines on screen, and only a somewhat large amount of triangles. This commit implements a basic OpenGL 2 renderer that uses only features from the (OpenGL 3.2) core profile. It is not yet faster than the OpenGL 1 renderer, primarily because it uses a lot of small draw calls. This commit uses OpenGL 2 on Linux and Mac OS X directly (i.e. links to the GL symbols from version 2+); on Windows this is impossible with the default drivers, so for now OpenGL 1 is still used there.
2016-06-30 15:54:35 +00:00
gl_FragColor = color;
}