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| author | Dan Goodliffe <dan@randomdan.homeip.net> | 2024-01-21 03:01:44 +0000 |
|---|---|---|
| committer | Dan Goodliffe <dan@randomdan.homeip.net> | 2024-01-21 03:01:44 +0000 |
| commit | 2368cde54675f39e9b5a99880124503b3ae391e1 (patch) | |
| tree | 31ffa54a9ea46061f0138d244dd6081c58779e66 | |
| parent | Look for and replace GL_XXX with fixed string (diff) | |
| download | ilt-2368cde54675f39e9b5a99880124503b3ae391e1.tar.bz2 ilt-2368cde54675f39e9b5a99880124503b3ae391e1.tar.xz ilt-2368cde54675f39e9b5a99880124503b3ae391e1.zip | |
Replace tokens found with values from getIntegerv
| -rw-r--r-- | gfx/gl/shader.cpp | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/gfx/gl/shader.cpp b/gfx/gl/shader.cpp index b57dcd4..0f75817 100644 --- a/gfx/gl/shader.cpp +++ b/gfx/gl/shader.cpp @@ -1,8 +1,24 @@ #include "shader.h" +#include <algorithm> #include <array> #include <stdexcept> #include <string> +namespace { + auto + getInt(GLenum e) + { + GLint i {}; + glGetIntegerv(e, &i); + return std::to_string(i); + } + + using LookUpFunction = std::string (*)(GLenum); + constexpr std::array<std::tuple<std::string_view, GLenum, LookUpFunction>, 1> LOOKUPS {{ + {"GL_MAX_GEOMETRY_OUTPUT_VERTICES", GL_MAX_GEOMETRY_OUTPUT_VERTICES, getInt}, + }}; +} + Shader::ShaderRef Shader::compile() const { @@ -13,7 +29,14 @@ Shader::compile() const if (lookups) { std::basic_string<GLchar> textMod {text}; for (const auto & match : ctre::range<R"(\bGL_[A-Z_]+\b)">(textMod)) { - textMod.replace(match.begin(), match.end(), "255"); + if (const auto lookup = std::find_if(LOOKUPS.begin(), LOOKUPS.end(), + [&match](const auto & lookup) { + return std::get<std::string_view>(lookup) == match; + }); + lookup != LOOKUPS.end()) { + const auto & [name, pname, getFunction] = *lookup; + textMod.replace(match.begin(), match.end(), getFunction(pname)); + } } source(textMod.c_str(), static_cast<GLint>(textMod.length())); } |