1 files changed, 142 insertions, 0 deletions
diff --git a/lib/glbase.cc b/lib/glbase.cc
new file mode 100644
index 0000000..1fb62a5
--- /dev/null
+++ b/lib/glbase.cc
@@ -0,0 +1,142 @@
+#include "glbase.h"
+#include "engine.h"
+#include "generic.h"
+#include <SDL.h>
+#include <SDL_opengl.h>
+
+int mogltk::glbase::width, mogltk::glbase::height, mogltk::glbase::inited = 0, mogltk::glbase::twoD = 0;
+SDL_Surface * mogltk::glbase::surface = 0;
+
+int mogltk::glbase::setup(int w, int h, int flags) throw(GeneralException) {
+    if (inited) {
+        printm(M_WARNING, "mogltk::glbase::setup called twice, ignoring second call...\n");
+        return -1;
+    }
+
+    width = w;
+    height = h;
+    
+    mogltk::engine::setup();
+    if (SDL_InitSubSystem(SDL_INIT_VIDEO) < 0) {
+        throw GeneralException(String("Couldn't initialise Video SubSystem: ") + SDL_GetError());
+    }
+
+    if (!(surface = SDL_SetVideoMode(width, height, 0, flags | SDL_OPENGL))) {
+        throw GeneralException(String("Couldn't set GL mode: ") + SDL_GetError());
+    }
+
+    float ratio = surface->w;
+    ratio /= surface->h;
+
+    printm(M_INFO, "Video resolution: %dx%dx%d (ratio = %3.2f)\n", surface->w, surface->h, surface->format->BitsPerPixel, ratio);
+    printm(M_INFO, "\n");
+    printm(M_INFO, "OpenGL infos\n");
+    printm(M_INFO, "------------\n");
+    printm(M_INFO, String("Vendor    : ") + (char *) glGetString(GL_VENDOR) + "\n");
+    printm(M_INFO, String("Renderer  : ") + (char *) glGetString(GL_RENDERER) + "\n");
+    printm(M_INFO, String("Version   : ") + (char *) glGetString(GL_VERSION) + "\n");
+    printm(M_INFO, String("Extensions: ") + (char *) glGetString(GL_EXTENSIONS) + "\n");
+
+    inited = 1;
+    
+    glViewport(0, 0, surface->w, surface->h);
+
+    glCullFace(GL_BACK);
+    glFrontFace(GL_CCW);
+    glEnable(GL_CULL_FACE);
+
+    glClearColor(0, 0, 0, 0);
+    glShadeModel(GL_SMOOTH);
+
+    glEnable(GL_DEPTH_TEST);
+    glDepthFunc(GL_LEQUAL);
+    glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
+
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    gluPerspective(60.0, ratio, 1.0, 1024.0);
+
+    glMatrixMode(GL_MODELVIEW);
+    glLoadIdentity();
+    
+    glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
+    
+    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+    Flip();
+    
+    return 0;
+}
+
+int mogltk::glbase::GetWidth(void) {
+    return width;
+}
+
+int mogltk::glbase::GetHeight(void) {
+    return height;
+}
+
+int mogltk::glbase::GetInited(void) {
+    return inited;
+}
+
+void mogltk::glbase::Enter2DMode(void) {
+    if (twoD)
+	return;
+    
+    glPushAttrib(GL_ENABLE_BIT);
+    glDisable(GL_DEPTH_TEST);
+    glDisable(GL_CULL_FACE);
+    glEnable(GL_BLEND);
+    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+    
+    glMatrixMode(GL_PROJECTION);
+    glPushMatrix();
+    glLoadIdentity();
+    glOrtho(0.0, width, height, 0.0, 0.0, 1.0);
+    
+    glMatrixMode(GL_MODELVIEW);
+    glPushMatrix();
+    glLoadIdentity();
+    
+    twoD = 1;
+}
+
+void mogltk::glbase::Leave2DMode(void) {
+    if (!twoD)
+	return;
+    
+    glMatrixMode(GL_MODELVIEW);
+    glPopMatrix();
+    glMatrixMode(GL_PROJECTION);
+    glPopMatrix();
+    
+    glPopAttrib();
+    
+    twoD = 0;
+}
+
+void mogltk::glbase::Flip() {
+    SDL_GL_SwapBuffers();
+    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+}
+
+bool mogltk::glbase::is2D() {
+    return twoD;
+}
+
+void mogltk::glbase::glVertex(GLdouble x, GLdouble y, GLdouble z, GLdouble w) {
+    glVertex4d(x, y, z, w);
+}
+
+void mogltk::glbase::glVertex(GLfloat x, GLfloat y, GLfloat z, GLfloat w) {
+    glVertex4f(x, y, z, w);
+}
+
+void mogltk::glbase::glVertex(GLint x, GLint y, GLint z, GLint w) {
+    glVertex4i(x, y, z, w);
+}
+
+void mogltk::glbase::glVertex(GLshort x, GLshort y, GLshort z, GLshot w) {
+    glVertex4i(x, y, z, w);
+}
+