Transform shader sources to header files

CMakeLists.txt

@@ -14,7 +14,6 @@ find_package(SWIG REQUIRED)
 find_package(Lua REQUIRED)
 
 file(GLOB_RECURSE sources core/*.cpp core/*.h)
-file(GLOB shaders shaders/*)
 
 add_compile_definitions(LUA_SCRIPTING)
 add_executable(couch ${sources})
@@ -26,8 +25,6 @@ target_link_libraries(couch OpenGL::GL)
 target_link_libraries(couch GLEW::GLEW)
 target_link_libraries(couch ${LUA_LIBRARIES})
 
-file(COPY shaders DESTINATION ${CMAKE_CURRENT_BINARY_DIR})
-
 include(UseSWIG)
 set_property(SOURCE scripting/couch.i PROPERTY CPLUSPLUS ON)
 swig_add_library(couchlua
@@ -39,6 +36,11 @@ target_link_libraries(couch couchlua)
 
 add_subdirectory(thirdparty)
 
+add_subdirectory(shaders)
+target_include_directories(couch
+  PUBLIC "${CMAKE_CURRENT_BINARY_DIR}/shaders")
+
+
 if(WIN32)
   target_link_libraries(couch glfw3dll)
   target_link_libraries(couch ssp)

core/Shader.cpp

@@ -1,42 +1,12 @@
 #include "Shader.h"
 
-Shader::Shader(const char* vertexPath, const char* fragmentPath) {
-  std::string vertexCode;
-  std::string fragmentCode;
-
-  std::ifstream vShaderFile;
-  std::ifstream fShaderFile;
-
-  vShaderFile.exceptions(std::ifstream::failbit | std::ifstream::badbit);
-  fShaderFile.exceptions(std::ifstream::failbit | std::ifstream::badbit);
-
-  try {
-    vShaderFile.open(vertexPath);
-    fShaderFile.open(fragmentPath);
-    std::stringstream vShaderStream, fShaderStream;
-
-    vShaderStream << vShaderFile.rdbuf();
-    fShaderStream << fShaderFile.rdbuf();
-
-    vShaderFile.close();
-    fShaderFile.close();
-
-    vertexCode = vShaderStream.str();
-    fragmentCode = fShaderStream.str();
-  } catch (std::ifstream::failure e) {
-    std::cerr << "Error reading shader file." << std::endl;
-  }
-
-  const char * vShaderCode = vertexCode.c_str();
-  const char * fShaderCode = fragmentCode.c_str();
-  
-
+Shader::Shader(const char* vertexCode, const char* fragmentCode) {
   Id vertex, fragment;
   int success;
   char infoLog[512];
 
   vertex = glCreateShader(GL_VERTEX_SHADER);
-  glShaderSource(vertex, 1, &vShaderCode, NULL);
+  glShaderSource(vertex, 1, &vertexCode, NULL);
   glCompileShader(vertex);
   glGetShaderiv(vertex, GL_COMPILE_STATUS, &success);
   if (!success) {
@@ -45,7 +15,7 @@ Shader::Shader(const char* vertexPath, const char* fragmentPath) {
   }
   
   fragment = glCreateShader(GL_FRAGMENT_SHADER);
-  glShaderSource(fragment, 1, &fShaderCode, NULL);
+  glShaderSource(fragment, 1, &fragmentCode, NULL);
   glCompileShader(fragment);
   glGetShaderiv(fragment, GL_COMPILE_STATUS, &success);
   if (!success) {

core/Shader.h

@@ -1,11 +1,6 @@
 #ifndef SHADER_H
 #define SHADER_H
 
-#include <string>
-#include <fstream>
-#include <sstream>
-#include <iostream>
-
 #include <glm/gtc/type_ptr.hpp>
 
 #include "types.h"
@@ -15,7 +10,7 @@ class Shader {
 public:
   Id id;
 
-  Shader(const char *vertexPath, const char *fragmentPath);
+  Shader(const char *vertexCode, const char *fragmentCode);
   void Use();
   void UpdateView(Matrix view);
   void UpdateModel(Matrix model);

core/Shaders/FlatShader.cpp

@@ -1,6 +1,8 @@
 #include "FlatShader.h"
+#include "flat.vert.h"
+#include "flat.frag.h"
 
-FlatShader::FlatShader() : Shader("shaders/flat.vert", "shaders/flat.frag") {}
+FlatShader::FlatShader() : Shader(flat_vert, flat_frag) {}
 
 void FlatShader::UpdateColor(Vector3 color) {
   glUniform3f(glGetUniformLocation(id, "color"), color.r, color.g, color.b);

shaders/CMakeLists.txt

@@ -0,0 +1,14 @@
+project(Couch)
+
+file(GLOB shaders *.vert *.frag)
+list(
+  TRANSFORM shaders
+  APPEND .h
+  OUTPUT_VARIABLE shader_header_files)
+
+add_custom_target(shader_headers
+  BYPRODUCTS ${shader_header_files}
+  COMMAND perl "${CMAKE_CURRENT_SOURCE_DIR}/makeheaders.pl"
+  DEPENDS ${shaders} ${CMAKE_CURRENT_SOURCE_DIR}/makeheaders.pl)
+
+add_dependencies(couch shader_headers)

shaders/makeheaders.pl

@@ -0,0 +1,33 @@
+use strict;
+use warnings;
+
+sub convert {
+    my $filename = $1;
+    
+    my $headerguard = "$filename.h";
+    $headerguard =~ tr/a-z./A-Z_/;
+    
+    my $constname = "$filename";
+    $constname =~ tr/./_/;
+
+    open my $fin, '<', $filename;
+    open my $fout, '>', "$filename.h";
+    
+    print $fout "#ifndef $headerguard \n#define $headerguard\nconst char * $constname = \n";
+
+    while(my $line = <$fin>) {
+	$line =~ s/\n/\\n/;
+	print $fout "\"$line\"\n";
+    }
+
+    print $fout ";\n#endif // $headerguard\n";
+    close $fin;
+    close $fout;
+}
+
+opendir DIR, ".";
+while (readdir DIR) {
+    if (/(.*\.(frag|vert))/) {
+	convert;
+    }
+}