solvespace/res/shaders/imesh.frag

//-----------------------------------------------------------------------------
// SolveSpace Indexed Mesh rendering shader
//
// Copyright 2016 Aleksey Egorov
//-----------------------------------------------------------------------------
#version 120

uniform vec4 color;

void main() {
    gl_FragColor = color;
}
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 Indexed Mesh rendering shader`
			`//`
			`// Copyright 2016 Aleksey Egorov`
			`//-----------------------------------------------------------------------------`
			`#version 120`

			`uniform vec4 color;`

			`void main() {`
			`gl_FragColor = color;`
			`}`