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Code Issues Releases Wiki Activity

panini: frustum_culling disabling done nicely

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Zeno Rogue
2020-11-01 21:38:45 +01:00
parent 3288eb0c5a
commit fd9fb83540
2 changed files with 13 additions and 9 deletions
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shaders.cpp
+12 -8
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@@ -66,6 +66,17 @@ EX void reset_all_shaders() {
matched_programs.clear();
}
EX string panini_shader() {
return
"t.w += 1.; t *= 2. / t.w; t.w -= 1.;\n"
"float s = t.z;\n"
"float l = length(t.xyz);\n"
"t /= max(length(t.xz), 1e-2);\n"
"t.z += " + glhr::to_glsl(panini_alpha) + ";\n"
"t *= l;\n"
"t.w = 1.;\n";
}
shared_ptr<glhr::GLprogram> write_shader(flagtype shader_flags) {
string varying, vsh, fsh, vmain = "void main() {\n", fmain = "void main() {\n";
@@ -342,14 +353,7 @@ shared_ptr<glhr::GLprogram> write_shader(flagtype shader_flags) {
if(WDIM == 3 && panini_alpha) {
vmain += "t = uPP * t;", vsh += "uniform mediump mat4 uPP;";
/* panini */
vmain += "t.w += 1.; t *= 2. / t.w; t.w -= 1.;\n";
vmain += "float s = t.z;";
vmain += "float l = length(t.xyz);";
vmain += "t /= max(length(t.xz), 1e-2);\n";
vmain += "t.z += " + glhr::to_glsl(panini_alpha) + ";\n";
vmain += "t *= l;\n";
vmain += "t.w = 1.;\n";
frustum_culling = false;
vmain += panini_shader();
shader_flags |= SF_ORIENT;
}