diff options
Diffstat (limited to 'lib/glbase.cc')
| -rw-r--r-- | lib/glbase.cc | 534 |
1 files changed, 267 insertions, 267 deletions
diff --git a/lib/glbase.cc b/lib/glbase.cc index cbb1927..abd3f1e 100644 --- a/lib/glbase.cc +++ b/lib/glbase.cc @@ -1,267 +1,267 @@ -/* - * mogltk - * Copyright (C) 1999-2004 Nicolas "Pixel" Noble - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -/* $Id: glbase.cc,v 1.20 2004-07-17 10:08:16 pixel Exp $ */ - -#include <stdio.h> -#include <SDL.h> -#include <SDL_opengl.h> -#include <Output.h> -#include <Handle.h> -#include "glbase.h" -#include "engine.h" -#include "generic.h" -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -mogltk::glbase::glbase(int w, int h, int flags) throw (GeneralException) : mogltk::base(w, h, flags, 0), twoD(0), fovy(60.0) { - SDL_Surface * surface; - GLint bits; - - mogltk::engine::setup(); - if (SDL_InitSubSystem(SDL_INIT_VIDEO) < 0) { - throw GeneralException(String("Couldn't initialise Video SubSystem: ") + SDL_GetError()); - } - -#if 1 - SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8); - SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8); - SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8); -// SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 32); - SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8); - SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1); - SDL_GL_SetAttribute(SDL_GL_ACCUM_RED_SIZE, 8); - SDL_GL_SetAttribute(SDL_GL_ACCUM_GREEN_SIZE, 8); - SDL_GL_SetAttribute(SDL_GL_ACCUM_BLUE_SIZE, 8); -#endif - if (!(surface = SDL_SetVideoMode(w, h, 0, flags | SDL_OPENGL | SDL_HWSURFACE))) { - throw GeneralException(String("Couldn't set GL mode: ") + SDL_GetError()); - } - - mogltk::engine::glbase_o = this; - mogltk::engine::base_o = this; - - ratio = (GLdouble) surface->w / surface->h; - - glGetIntegerv(GL_STENCIL_BITS, &bits); - - 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"); - - 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(fovy, ratio, 1.0, 1024.0); - - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); - - glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); - - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - - SDL_GL_SwapBuffers(); - SDL_ShowCursor(SDL_DISABLE); - - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - - setsurface(surface); - mogltk::engine::postsetup(); -} - -mogltk::glbase::~glbase() { -} - -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, GetWidth(), GetHeight(), 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(bool clear) { - mogltk::engine::pollevents(); - SDL_GL_SwapBuffers(); - if (clear) - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); -} - -bool mogltk::glbase::is2D() { - return twoD; -} - -void mogltk::glbase::glVertex(GLshort x, GLshort y, GLshort z, GLshort w) { -#ifdef DEBUG - printm(M_INFO, "Calling glVertex(%i, %i, %i, %i) (shorts)\n", x, y, z, w); -#endif - glVertex4i(x, y, z, w); -} - -void mogltk::glbase::glVertex(GLint x, GLint y, GLint z, GLint w) { -#ifdef DEBUG - printm(M_INFO, "Calling glVertex(%i, %i, %i, %i) (ints)\n", x, y, z, w); -#endif - glVertex4i(x, y, z, w); -} - -void mogltk::glbase::glVertex(GLfloat x, GLfloat y, GLfloat z, GLfloat w) { -#ifdef DEBUG - printm(M_INFO, "Calling glVertex(%f, %f, %f, %f) (floats)\n", x, y, z, w); -#endif - glVertex4f(x, y, z, w); -} - -void mogltk::glbase::glVertex(GLdouble x, GLdouble y, GLdouble z, GLdouble w) { -#ifdef DEBUG - printm(M_INFO, "Calling glVertex(%f, %f, %f, %f) (doubles)\n", x, y, z, w); -#endif - glVertex4d(x, y, z, w); -} - -void mogltk::glbase::changeviewport(int x, int y, unsigned int w, unsigned int h) { -#if 0 - if ((w == 0) && (h == 0)) { - w = GetWidth() - x; - h = GetHeight() - y; - } - - ratio = (GLdouble) w / h; - glViewport(x, y, w, h); - if (!engine::base_o->is2D()) - gluPerspective(fovy, ratio, 1.0, 1024.0); -#endif - glScissor(x, GetHeight() - y - h - 1, w + 1, h + 1); - glEnable(GL_SCISSOR_TEST); -} - -void mogltk::glbase::changefovy(GLdouble nfoyv) { - fovy = nfoyv; - if (!engine::base_o->is2D()) - gluPerspective(fovy, ratio, 1.0, 1024.0); -} - -inline static unsigned int nextpower(unsigned int n) { - unsigned int i; - - if (!n) - return n; - - if (ISPOT(n)) - return n; - - for (i = 31; i >= 0; i--) { - if ((n >> i) & 1) { - return 1 << (i + 1); - } - } -} - -mogltk::texture * mogltk::glbase::GrabTexture() { - int w = nextpower(GetWidth()); - int h = nextpower(GetHeight()); - texture * r = new texture(w, h); - SDL_Surface * t; - - t = GrabSurface(); - SDL_BlitSurface(t, NULL, r->GetSurface(), NULL); - SDL_FreeSurface(t); - - return r; -} - -SDL_Surface * mogltk::glbase::GrabSurface() { - int i; - SDL_Surface * r; - Uint8 * pixels = (Uint8 *) malloc(GetWidth() * GetHeight() * 3); - Uint8 * s, * d; - - glReadPixels(0, 0, GetWidth(), GetHeight(), GL_RGB, GL_UNSIGNED_BYTE, pixels); - - r = SDL_CreateRGBSurface(SDL_SWSURFACE, GetWidth(), GetHeight(), 24, -#if SDL_BYTEORDER == SDL_BIG_ENDIAN - 0xff000000, - 0x00ff0000, - 0x0000ff00, - 0x00000000 -#else - 0x000000ff, - 0x0000ff00, - 0x00ff0000, - 0x00000000 -#endif - ); - - for (i = 0; i < GetHeight(); i++) { - s = pixels + i * GetWidth() * 3; - d = ((Uint8 *) r->pixels) + (GetHeight() - i - 1) * GetWidth() * 3; - memcpy(d, s, GetWidth() * 3); - } - - free(pixels); - - return r; -} +/*
+ * mogltk
+ * Copyright (C) 1999-2004 Nicolas "Pixel" Noble
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+/* $Id: glbase.cc,v 1.21 2004-10-19 01:27:30 pixel Exp $ */
+
+#include <stdio.h>
+#include <SDL.h>
+#include <SDL_opengl.h>
+#include <Output.h>
+#include <Handle.h>
+#include "glbase.h"
+#include "engine.h"
+#include "generic.h"
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+mogltk::glbase::glbase(int w, int h, int flags) throw (GeneralException) : mogltk::base(w, h, flags, 0), twoD(0), fovy(60.0) {
+ SDL_Surface * surface;
+ GLint bits;
+
+ mogltk::engine::setup();
+ if (SDL_InitSubSystem(SDL_INIT_VIDEO) < 0) {
+ throw GeneralException(String("Couldn't initialise Video SubSystem: ") + SDL_GetError());
+ }
+
+#if 1
+ SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
+ SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
+ SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
+// SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 32);
+ SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);
+ SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
+ SDL_GL_SetAttribute(SDL_GL_ACCUM_RED_SIZE, 8);
+ SDL_GL_SetAttribute(SDL_GL_ACCUM_GREEN_SIZE, 8);
+ SDL_GL_SetAttribute(SDL_GL_ACCUM_BLUE_SIZE, 8);
+#endif
+ if (!(surface = SDL_SetVideoMode(w, h, 0, flags | SDL_OPENGL | SDL_HWSURFACE))) {
+ throw GeneralException(String("Couldn't set GL mode: ") + SDL_GetError());
+ }
+
+ mogltk::engine::glbase_o = this;
+ mogltk::engine::base_o = this;
+
+ ratio = (GLdouble) surface->w / surface->h;
+
+ glGetIntegerv(GL_STENCIL_BITS, &bits);
+
+ 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");
+
+ 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(fovy, ratio, 1.0, 1024.0);
+
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+
+ glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+ SDL_GL_SwapBuffers();
+ SDL_ShowCursor(SDL_DISABLE);
+
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+ setsurface(surface);
+ mogltk::engine::postsetup();
+}
+
+mogltk::glbase::~glbase() {
+}
+
+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, GetWidth(), GetHeight(), 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(bool clear) {
+ mogltk::engine::pollevents();
+ SDL_GL_SwapBuffers();
+ if (clear)
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+}
+
+bool mogltk::glbase::is2D() {
+ return twoD;
+}
+
+void mogltk::glbase::glVertex(GLshort x, GLshort y, GLshort z, GLshort w) {
+#ifdef DEBUG
+ printm(M_INFO, "Calling glVertex(%i, %i, %i, %i) (shorts)\n", x, y, z, w);
+#endif
+ glVertex4i(x, y, z, w);
+}
+
+void mogltk::glbase::glVertex(GLint x, GLint y, GLint z, GLint w) {
+#ifdef DEBUG
+ printm(M_INFO, "Calling glVertex(%i, %i, %i, %i) (ints)\n", x, y, z, w);
+#endif
+ glVertex4i(x, y, z, w);
+}
+
+void mogltk::glbase::glVertex(GLfloat x, GLfloat y, GLfloat z, GLfloat w) {
+#ifdef DEBUG
+ printm(M_INFO, "Calling glVertex(%f, %f, %f, %f) (floats)\n", x, y, z, w);
+#endif
+ glVertex4f(x, y, z, w);
+}
+
+void mogltk::glbase::glVertex(GLdouble x, GLdouble y, GLdouble z, GLdouble w) {
+#ifdef DEBUG
+ printm(M_INFO, "Calling glVertex(%f, %f, %f, %f) (doubles)\n", x, y, z, w);
+#endif
+ glVertex4d(x, y, z, w);
+}
+
+void mogltk::glbase::changeviewport(int x, int y, unsigned int w, unsigned int h) {
+#if 0
+ if ((w == 0) && (h == 0)) {
+ w = GetWidth() - x;
+ h = GetHeight() - y;
+ }
+
+ ratio = (GLdouble) w / h;
+ glViewport(x, y, w, h);
+ if (!engine::base_o->is2D())
+ gluPerspective(fovy, ratio, 1.0, 1024.0);
+#endif
+ glScissor(x, GetHeight() - y - h - 1, w + 1, h + 1);
+ glEnable(GL_SCISSOR_TEST);
+}
+
+void mogltk::glbase::changefovy(GLdouble nfoyv) {
+ fovy = nfoyv;
+ if (!engine::base_o->is2D())
+ gluPerspective(fovy, ratio, 1.0, 1024.0);
+}
+
+inline static unsigned int nextpower(unsigned int n) {
+ unsigned int i;
+
+ if (!n)
+ return n;
+
+ if (ISPOT(n))
+ return n;
+
+ for (i = 31; i >= 0; i--) {
+ if ((n >> i) & 1) {
+ return 1 << (i + 1);
+ }
+ }
+}
+
+mogltk::texture * mogltk::glbase::GrabTexture() {
+ int w = nextpower(GetWidth());
+ int h = nextpower(GetHeight());
+ texture * r = new texture(w, h);
+ SDL_Surface * t;
+
+ t = GrabSurface();
+ SDL_BlitSurface(t, NULL, r->GetSurface(), NULL);
+ SDL_FreeSurface(t);
+
+ return r;
+}
+
+SDL_Surface * mogltk::glbase::GrabSurface() {
+ int i;
+ SDL_Surface * r;
+ Uint8 * pixels = (Uint8 *) malloc(GetWidth() * GetHeight() * 3);
+ Uint8 * s, * d;
+
+ glReadPixels(0, 0, GetWidth(), GetHeight(), GL_RGB, GL_UNSIGNED_BYTE, pixels);
+
+ r = SDL_CreateRGBSurface(SDL_SWSURFACE, GetWidth(), GetHeight(), 24,
+#if SDL_BYTEORDER == SDL_BIG_ENDIAN
+ 0xff000000,
+ 0x00ff0000,
+ 0x0000ff00,
+ 0x00000000
+#else
+ 0x000000ff,
+ 0x0000ff00,
+ 0x00ff0000,
+ 0x00000000
+#endif
+ );
+
+ for (i = 0; i < GetHeight(); i++) {
+ s = pixels + i * GetWidth() * 3;
+ d = ((Uint8 *) r->pixels) + (GetHeight() - i - 1) * GetWidth() * 3;
+ memcpy(d, s, GetWidth() * 3);
+ }
+
+ free(pixels);
+
+ return r;
+}
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