c8ff17f4a2
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
39 lines
1.1 KiB
GLSL
39 lines
1.1 KiB
GLSL
//-----------------------------------------------------------------------------
|
|
// SolveSpace Point rendering shader
|
|
//
|
|
// Copyright 2016 Aleksey Egorov
|
|
//-----------------------------------------------------------------------------
|
|
const float feather = 0.5;
|
|
|
|
attribute vec3 pos;
|
|
attribute vec2 loc;
|
|
|
|
uniform mat4 modelview;
|
|
uniform mat4 projection;
|
|
uniform float width;
|
|
uniform float pixel;
|
|
|
|
varying vec2 fragLoc;
|
|
|
|
void main() {
|
|
// get camera vectors from modelview matrix
|
|
vec3 u = vec3(modelview[0].x, modelview[1].x, modelview[2].x);
|
|
vec3 v = vec3(modelview[0].y, modelview[1].y, modelview[2].y);
|
|
|
|
// calculate point contour extension basis for constant width and caps
|
|
|
|
// calculate point extension width considering antialiasing
|
|
float ext = width + feather * pixel;
|
|
|
|
// extend point contour
|
|
vec3 vertex = pos;
|
|
vertex += ext * loc.x * normalize(u);
|
|
vertex += ext * loc.y * normalize(v);
|
|
|
|
// write fragment location for calculating caps and antialiasing
|
|
fragLoc = loc;
|
|
|
|
// transform resulting vertex with modelview and projection matrices
|
|
gl_Position = projection * modelview * vec4(vertex, 1.0);
|
|
}
|