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glhr:: shaderside projection for the half-plane model
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@ -199,6 +199,13 @@ void eyewidth_translate(int ed) {
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if(ed) glhr::projection_multiply(glhr::translate(-ed * current_display->eyewidth(), 0, 0));
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}
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glhr::glmatrix model_orientation_gl() {
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glhr::glmatrix s = glhr::id;
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for(int a=0; a<2; a++)
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conformal::apply_orientation(s[a][1], s[a][0]);
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return s;
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}
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void display_data::set_projection(int ed, bool apply_models) {
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DEBB(DF_GRAPH, (debugfile,"current_display->set_projection\n"));
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@ -207,8 +214,10 @@ void display_data::set_projection(int ed, bool apply_models) {
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if(vid.consider_shader_projection) {
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if(pmodel == mdDisk && !spherespecial && !(hyperbolic && vid.alpha <= -1))
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shaderside_projection = true;
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if(pmodel == mdBand && hyperbolic && apply_models && !inHighQual)
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if(pmodel == mdBand && hyperbolic && apply_models)
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shaderside_projection = true, glhr::new_shader_projection = glhr::shader_projection::band;
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if(pmodel == mdHalfplane && hyperbolic && apply_models)
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shaderside_projection = true, glhr::new_shader_projection = glhr::shader_projection::halfplane;
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}
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start_projection(ed, shaderside_projection);
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@ -249,11 +258,16 @@ void display_data::set_projection(int ed, bool apply_models) {
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if(glhr::new_shader_projection == glhr::shader_projection::band) {
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glhr::projection_multiply(glhr::scale(2 / M_PI, 2 / M_PI,1));
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glhr::glmatrix s = glhr::id;
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for(int a=0; a<2; a++)
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conformal::apply_orientation(s[a][1], s[a][0]);
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glhr::projection_multiply(s);
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glhr::projection_multiply(model_orientation_gl());
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}
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if(glhr::new_shader_projection == glhr::shader_projection::halfplane) {
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glhr::projection_multiply(glhr::translate(0, 1, 0));
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glhr::projection_multiply(glhr::scale(-1, 1, 1));
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glhr::projection_multiply(glhr::scale(conformal::halfplane_scale, conformal::halfplane_scale, 1));
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glhr::projection_multiply(model_orientation_gl());
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glhr::projection_multiply(glhr::translate(0, 0.5, 0));
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}
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}
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cameraangle_on = false;
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2
hyper.h
2
hyper.h
@ -3647,7 +3647,7 @@ namespace glhr {
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const GLfloat* as_array() const { return a[0]; }
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};
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enum class shader_projection { standard, band, MAX };
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enum class shader_projection { standard, band, halfplane, MAX };
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extern shader_projection new_shader_projection;
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@ -475,7 +475,7 @@ void glapplymatrix(const transmatrix& V) {
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}
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mat[12] = 0;
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mat[13] = 0;
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mat[14] = (glhr::current_shader_projection == glhr::shader_projection::standard) ? GLfloat(vid.alpha) : 0;
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mat[14] = (glhr::current_shader_projection != glhr::shader_projection::band) ? GLfloat(vid.alpha) : 0;
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mat[15] = 1;
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if(vid.stretch != 1) mat[1] *= vid.stretch, mat[5] *= vid.stretch, mat[9] *= vid.stretch, mat[13] *= vid.stretch;
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16
shaders.cpp
16
shaders.cpp
@ -488,6 +488,7 @@ void init() {
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bool mps = j != 0;
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bool band = (sp == shader_projection::band);
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bool hp = (sp == shader_projection::halfplane);
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programs[i][j] = new GLprogram(stringbuilder(
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@ -532,16 +533,21 @@ void init() {
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lfog, "vColor = vColor * clamp(1.0 + aPosition.z * uFog, 0.0, 1.0);",
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!mps, "gl_Position = uMVP * aPosition;",
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mps&&!band,"gl_Position = uP * (uMV * aPosition);",
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band, "vec4 t = uMV * aPosition;",
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band, "float zlev = zlevel(t);",
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band, "t /= zlev;",
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band||hp, "vec4 t = uMV * aPosition;",
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band||hp, "float zlev = zlevel(t);",
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band||hp, "t /= zlev;",
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band, "float ty = asinh(t.y);",
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band, "float tx = asinh(t.x / cosh(ty));",
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band, "ty = 2.0 * atan(tanh(ty/2.0));",
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band, "t[0] = tx; t[1] = ty; t[2] = 1.0; t[3] = 1.0;",
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band, "gl_Position = uP * t;",
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hp, "t.x /= t.z; t.y /= t.z; t.y = t.y + 1.0; ",
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hp, "float rads = t.x * t.x + t.y * t.y; ",
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hp, "t.x /= -rads; t.y /= -rads; t.z = 1.0; t[3] = 1.0;",
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band || hp,"gl_Position = uP * t;",
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1, "}"),
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stringbuilder(
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