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 abd3f1e..2edeec5 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 1.21 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;
-}
+/* + * 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 1.22 2004-11-27 21:48:03 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; +} |