3 # Copyright (C) 2006 Christoph Sommer <christoph.sommer@2006.expires.deltadevelopment.de>
5 # This program is free software; you can redistribute it and/or
6 # modify it under the terms of the GNU General Public License
7 # as published by the Free Software Foundation; either version 2
8 # of the License, or (at your option) any later version.
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program; if not, write to the Free Software
17 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 # -----------------------------------------------------------------------------
21 # This patch allows running the game on systems without OpenGL support.
23 # It modifies the video portion of the SuperTux engine to render all graphics
24 # with SDL functions only. Many features are removed from the video engine,
25 # so don't expect much.
27 # Note that the patched sources will need an additional library, SDL_gfx, to
30 # Installing the patch should be pretty straightforward. Simply run the
31 # following command prior to running autogen.sh and configure:
33 # patch -p1 < contrib/supertux-nogl.diff
35 # This patch works for revision 3321. It may break for later revisions.
37 # -----------------------------------------------------------------------------
38 diff -Naur supertux/INSTALL supertux-nogl/INSTALL
39 --- supertux/INSTALL 2006-03-03 21:49:07.000000000 +0100
40 +++ supertux-nogl/INSTALL 2006-04-07 04:13:00.000000000 +0200
42 - Install instructions for SuperTux -
43 http://supertux.berlios.de/
45 -Last update: October 11, 2005 by Ondra Hosek
46 +Last update: March 4, 2006 by Christoph Sommer
51 Download: ftp://ftp.perforce.com/pub/jam
52 Homepage: http://www.perforce.com/jam/jam.html
54 -* OpenGL headers and libraries
55 - opengl libraries and headers are specific to your graphics card. Make sure
56 - that you have hardware accelerated opengl drivers installed. Software
57 - renderers like Mesa will make supertux unplayable slow.
59 * SDL 1.2.5 or later (1.2.8 is recommended on MacOS/X)
62 * SDL_image (any version)
63 http://www.libsdl.org/projects/SDL_image
65 +* SDL_gfx (2.0.13 or later)
66 + http://www.ferzkopp.net/Software/SDL_gfx-2.0/
68 * PhysicsFS (1.0.0, the development branch 1.1.x is buggy and does not work,
69 1.2.0 and later should work when it is released)
70 http://www.icculus.org/physfs
71 diff -Naur supertux/README supertux-nogl/README
72 --- supertux/README 2006-03-03 20:43:38.000000000 +0100
73 +++ supertux-nogl/README 2006-04-07 04:13:00.000000000 +0200
75 - An introduction for SuperTux -
76 http://supertux.berlios.de/
78 -Last update: October 13, 2005
79 +Last update: March 4, 2006 by Christoph Sommer
84 Also, notice that SuperTux saves the options, so it's often enough to
87 - The game uses OpenGL to render the graphics. You will either need a CPU
88 - with about 10 GHz or an accelerated video card with the vendor's drivers.
89 - (On Linux, the team recommends using cards from NVidia with the proprietary
90 - drivers, but ATI or another verndor should do.)
91 + The game uses SDL to render the graphics. You will either need a CPU
92 + with about 1 GHz or go get the original version of SuperTux which uses
97 diff -Naur supertux/configure.ac supertux-nogl/configure.ac
98 --- supertux/configure.ac 2006-03-03 20:43:38.000000000 +0100
99 +++ supertux-nogl/configure.ac 2006-04-07 04:13:00.000000000 +0200
102 dnl Process this file with autoconf to produce a configure script.
104 -AC_INIT(supertux, 0.2-svn)
105 +AC_INIT(supertux, 0.2-nogl-svn)
106 AC_CONFIG_SRCDIR([src/main.cpp])
107 AC_CONFIG_AUX_DIR([mk/autoconf])
110 [AC_MSG_ERROR([Please install SDLImage >= 1.2.1])],
111 [$SDL_CFLAGS], [$SDL_LIBS])
113 +dnl FIXME: This is far from perfect
114 +NP_FINDLIB([SDLGFX], [SDL_gfx], [SDL_gfx >= 2.0.13],
115 + NP_LANG_PROGRAM([#include <SDL_rotozoom.h>], [0;]),
118 + [AC_MSG_ERROR([Please install SDL_gfx >= 2.0.13])],
119 + [$SDL_CFLAGS], [$SDL_LIBS])
121 NP_FINDLIB([PHYSFS], [physfs], [physfs >= 1.0.0],
125 [AC_MSG_ERROR([Please intall OpenAL])],
129 -if test "$no_gl" = "yes"; then
130 - AC_MSG_ERROR([Please install opengl libraries and headers])
133 dnl Checks for library functions.
134 AC_CHECK_FUNCS(mkdir strdup strstr)
136 diff -Naur supertux/src/Jamfile supertux-nogl/src/Jamfile
137 --- supertux/src/Jamfile 2006-03-03 20:34:49.000000000 +0100
138 +++ supertux-nogl/src/Jamfile 2006-04-07 04:11:50.000000000 +0200
140 Application supertux : $(sources) $(wrapper_objects) ;
141 C++Flags supertux : -DAPPDATADIR='\"$(appdatadir)\"' ;
142 LinkWith supertux : squirrel ;
143 -ExternalLibs supertux : SDL SDLIMAGE GL OPENAL VORBIS VORBISFILE OGG ICONV PHYSFS BINRELOC ;
144 +ExternalLibs supertux : SDL SDLIMAGE SDLGFX OPENAL VORBIS VORBISFILE OGG ICONV PHYSFS BINRELOC ;
145 Help supertux : "Build the supertux executable" ;
146 IncludeDir supertux : squirrel/include ;
148 diff -Naur supertux/src/main.cpp supertux-nogl/src/main.cpp
149 --- supertux/src/main.cpp 2006-04-07 03:32:14.000000000 +0200
150 +++ supertux-nogl/src/main.cpp 2006-04-07 04:11:50.000000000 +0200
154 #include <SDL_image.h>
157 #include "gameconfig.hpp"
158 #include "resources.hpp"
163 -static void check_gl_error()
165 - GLenum glerror = glGetError();
166 - std::string errormsg;
168 - if(glerror != GL_NO_ERROR) {
170 - case GL_INVALID_ENUM:
171 - errormsg = "Invalid enumeration value";
173 - case GL_INVALID_VALUE:
174 - errormsg = "Numeric argzment out of range";
176 - case GL_INVALID_OPERATION:
177 - errormsg = "Invalid operation";
179 - case GL_STACK_OVERFLOW:
180 - errormsg = "stack overflow";
182 - case GL_STACK_UNDERFLOW:
183 - errormsg = "stack underflow";
185 - case GL_OUT_OF_MEMORY:
186 - errormsg = "out of memory";
188 -#ifdef GL_TABLE_TOO_LARGE
189 - case GL_TABLE_TOO_LARGE:
190 - errormsg = "table too large";
194 - errormsg = "unknown error number";
197 - std::stringstream msg;
198 - msg << "OpenGL Error: " << errormsg;
199 - throw std::runtime_error(msg.str());
205 if(texture_manager != NULL)
207 SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 5);
208 SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5);
210 - int flags = SDL_OPENGL;
211 + int flags = SDL_SWSURFACE;
212 if(config->use_fullscreen)
213 flags |= SDL_FULLSCREEN;
214 int width = config->screenwidth;
219 - // setup opengl state and transform
220 - glDisable(GL_DEPTH_TEST);
221 - glDisable(GL_CULL_FACE);
222 - glEnable(GL_TEXTURE_2D);
223 - glEnable(GL_BLEND);
224 - glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
226 - glViewport(0, 0, screen->w, screen->h);
227 - glMatrixMode(GL_PROJECTION);
229 - // logical resolution here not real monitor resolution
230 - glOrtho(0, 800, 600, 0, -1.0, 1.0);
231 - glMatrixMode(GL_MODELVIEW);
233 - glTranslatef(0, 0, 0);
237 if(texture_manager != NULL)
238 texture_manager->reload_textures();
240 diff -Naur supertux/src/video/drawing_context.cpp supertux-nogl/src/video/drawing_context.cpp
241 --- supertux/src/video/drawing_context.cpp 2006-03-31 04:18:01.000000000 +0200
242 +++ supertux-nogl/src/video/drawing_context.cpp 2006-04-07 04:11:49.000000000 +0200
246 #include <SDL_image.h>
249 #include "drawing_context.hpp"
250 #include "surface.hpp"
253 screen = SDL_GetVideoSurface();
255 - lightmap_width = screen->w / LIGHTMAP_DIV;
256 - lightmap_height = screen->h / LIGHTMAP_DIV;
257 - unsigned int width = next_po2(lightmap_width);
258 - unsigned int height = next_po2(lightmap_height);
260 - lightmap = new Texture(width, height, GL_RGB);
262 - lightmap_uv_right = static_cast<float>(lightmap_width) / static_cast<float>(width);
263 - lightmap_uv_bottom = static_cast<float>(lightmap_height) / static_cast<float>(height);
264 - texture_manager->register_texture(lightmap);
267 requests = &drawing_requests;
270 DrawingContext::~DrawingContext()
272 - texture_manager->remove_texture(lightmap);
277 DrawingContext::draw_surface(const Surface* surface, const Vector& position,
280 + if(target != NORMAL) return;
282 assert(surface != 0);
284 DrawingRequest request;
286 DrawingContext::draw_surface_part(const Surface* surface, const Vector& source,
287 const Vector& size, const Vector& dest, int layer)
289 + if(target != NORMAL) return;
291 assert(surface != 0);
293 DrawingRequest request;
295 DrawingContext::draw_text(const Font* font, const std::string& text,
296 const Vector& position, FontAlignment alignment, int layer)
298 + if(target != NORMAL) return;
300 DrawingRequest request;
304 DrawingContext::draw_center_text(const Font* font, const std::string& text,
305 const Vector& position, int layer)
307 + if(target != NORMAL) return;
309 draw_text(font, text, Vector(position.x + SCREEN_WIDTH/2, position.y),
310 CENTER_ALLIGN, layer);
314 DrawingContext::draw_gradient(const Color& top, const Color& bottom, int layer)
316 + if(target != NORMAL) return;
318 DrawingRequest request;
320 request.type = GRADIENT;
322 DrawingContext::draw_filled_rect(const Vector& topleft, const Vector& size,
323 const Color& color, int layer)
325 + if(target != NORMAL) return;
327 DrawingRequest request;
329 request.type = FILLRECT;
330 @@ -217,23 +216,55 @@
331 delete surfacepartrequest;
336 + void fillrect(SDL_Surface* screen, float x, float y, float w, float h, int r, int g, int b, int a)
347 + SDL_Rect src, rect;
348 + SDL_Surface *temp = NULL;
356 + temp = SDL_CreateRGBSurface(screen->flags, rect.w, rect.h, screen->format->BitsPerPixel, screen->format->Rmask, screen->format->Gmask, screen->format->Bmask, screen->format->Amask);
363 + SDL_FillRect(temp, &src, SDL_MapRGB(screen->format, r, g, b));
364 + SDL_SetAlpha(temp, SDL_SRCALPHA, a);
365 + SDL_BlitSurface(temp,0,screen,&rect);
366 + SDL_FreeSurface(temp);
368 + SDL_FillRect(screen, &rect, SDL_MapRGB(screen->format, r, g, b));
374 DrawingContext::draw_gradient(DrawingRequest& request)
376 GradientRequest* gradientrequest = (GradientRequest*) request.request_data;
377 const Color& top = gradientrequest->top;
378 const Color& bottom = gradientrequest->bottom;
380 - glDisable(GL_TEXTURE_2D);
382 - glColor4f(top.red, top.green, top.blue, top.alpha);
384 - glVertex2f(SCREEN_WIDTH, 0);
385 - glColor4f(bottom.red, bottom.green, bottom.blue, bottom.alpha);
386 - glVertex2f(SCREEN_WIDTH, SCREEN_HEIGHT);
387 - glVertex2f(0, SCREEN_HEIGHT);
389 - glEnable(GL_TEXTURE_2D);
393 + for(float y = 0; y < height; y += 2) ::fillrect(screen, 0, (int)y, width, 2, (int)(((float)(top.red-bottom.red)/(0-height)) * y + top.red), (int)(((float)(top.green-bottom.green)/(0-height)) * y + top.green), (int)(((float)(top.blue-bottom.blue)/(0-height)) * y + top.blue), 255);
395 delete gradientrequest;
397 @@ -259,17 +290,12 @@
398 float w = fillrectrequest->size.x;
399 float h = fillrectrequest->size.y;
401 - glDisable(GL_TEXTURE_2D);
402 - glColor4f(fillrectrequest->color.red, fillrectrequest->color.green,
403 - fillrectrequest->color.blue, fillrectrequest->color.alpha);
407 - glVertex2f(x+w, y);
408 - glVertex2f(x+w, y+h);
409 - glVertex2f(x, y+h);
411 - glEnable(GL_TEXTURE_2D);
412 + int r = static_cast<int>(fillrectrequest->color.red);
413 + int g = static_cast<int>(fillrectrequest->color.green);
414 + int b = static_cast<int>(fillrectrequest->color.blue);
415 + int a = static_cast<int>(fillrectrequest->color.alpha);
417 + ::fillrect(screen, x, y, w, h, r, g, b, a);
419 delete fillrectrequest;
421 @@ -284,66 +310,10 @@
422 transformstack.clear();
423 target_stack.clear();
425 - bool use_lightmap = lightmap_requests.size() != 0;
427 - // PART1: create lightmap
429 - glViewport(0, screen->h - lightmap_height, lightmap_width, lightmap_height);
430 - glMatrixMode(GL_PROJECTION);
432 - glOrtho(0, SCREEN_WIDTH, SCREEN_HEIGHT, 0, -1.0, 1.0);
433 - glMatrixMode(GL_MODELVIEW);
436 - //glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
437 - glClearColor(0, 0, 0, 1);
438 - glClear(GL_COLOR_BUFFER_BIT);
439 - handle_drawing_requests(lightmap_requests);
440 - lightmap_requests.clear();
442 - glDisable(GL_BLEND);
443 - glBindTexture(GL_TEXTURE_2D, lightmap->get_handle());
444 - glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, screen->h - lightmap_height, lightmap_width, lightmap_height);
446 - glViewport(0, 0, screen->w, screen->h);
447 - glMatrixMode(GL_PROJECTION);
449 - glOrtho(0, SCREEN_WIDTH, SCREEN_HEIGHT, 0, -1.0, 1.0);
450 - glMatrixMode(GL_MODELVIEW);
452 - glEnable(GL_BLEND);
455 - //glClear(GL_COLOR_BUFFER_BIT);
456 handle_drawing_requests(drawing_requests);
457 drawing_requests.clear();
460 - glBlendFunc(GL_SRC_ALPHA, GL_ONE);
462 - glBindTexture(GL_TEXTURE_2D, lightmap->get_handle());
465 - glTexCoord2f(0, lightmap_uv_bottom);
468 - glTexCoord2f(lightmap_uv_right, lightmap_uv_bottom);
469 - glVertex2f(SCREEN_WIDTH, 0);
471 - glTexCoord2f(lightmap_uv_right, 0);
472 - glVertex2f(SCREEN_WIDTH, SCREEN_HEIGHT);
474 - glTexCoord2f(0, 0);
475 - glVertex2f(0, SCREEN_HEIGHT);
479 - glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
482 - assert_gl("drawing");
484 - SDL_GL_SwapBuffers();
490 DrawingContext::set_target(Target target)
492 this->target = target;
493 - if(target == LIGHTMAP)
494 - requests = &lightmap_requests;
496 - requests = &drawing_requests;
499 diff -Naur supertux/src/video/drawing_context.hpp supertux-nogl/src/video/drawing_context.hpp
500 --- supertux/src/video/drawing_context.hpp 2006-03-03 20:34:27.000000000 +0100
501 +++ supertux-nogl/src/video/drawing_context.hpp 2006-04-07 04:11:49.000000000 +0200
514 +#include "glutil.hpp"
519 // some constants for predefined layer values
521 @@ -202,16 +202,12 @@
522 void draw_filled_rect(DrawingRequest& request);
524 DrawingRequests drawing_requests;
525 - DrawingRequests lightmap_requests;
527 DrawingRequests* requests;
531 std::vector<Target> target_stack;
533 - int lightmap_width, lightmap_height;
534 - float lightmap_uv_right, lightmap_uv_bottom;
538 diff -Naur supertux/src/video/glutil.hpp supertux-nogl/src/video/glutil.hpp
539 --- supertux/src/video/glutil.hpp 2006-03-21 16:13:11.000000000 +0100
540 +++ supertux-nogl/src/video/glutil.hpp 2006-04-07 04:11:49.000000000 +0200
547 -static inline void assert_gl(const char* message)
550 - GLenum error = glGetError();
551 - if(error != GL_NO_ERROR) {
552 - std::ostringstream msg;
553 - msg << "OpenGLError while '" << message << "': ";
555 - case GL_INVALID_ENUM:
556 - msg << "INVALID_ENUM: An unacceptable value is specified for an "
557 - "enumerated argument.";
559 - case GL_INVALID_VALUE:
560 - msg << "INVALID_VALUE: A numeric argument is out of range.";
562 - case GL_INVALID_OPERATION:
563 - msg << "INVALID_OPERATION: The specified operation is not allowed "
564 - "in the current state.";
566 - case GL_STACK_OVERFLOW:
567 - msg << "STACK_OVERFLOW: This command would cause a stack overflow.";
569 - case GL_STACK_UNDERFLOW:
570 - msg << "STACK_UNDERFLOW: This command would cause a stack underflow.";
572 - case GL_OUT_OF_MEMORY:
573 - msg << "OUT_OF_MEMORY: There is not enough memory left to execute the "
577 - msg << "Unknown error (code " << error << ")";
580 - throw std::runtime_error(msg.str());
586 +#define GL_SRC_ALPHA 0
587 +#define GL_ONE_MINUS_SRC_ALPHA 1
594 diff -Naur supertux/src/video/screen.cpp supertux-nogl/src/video/screen.cpp
595 --- supertux/src/video/screen.cpp 2006-04-07 03:32:13.000000000 +0200
596 +++ supertux-nogl/src/video/screen.cpp 2006-04-07 04:11:49.000000000 +0200
599 static const float LOOP_DELAY = 20.0;
601 -void fillrect(float x, float y, float w, float h, const Color& col)
612 - glColor4f(col.red, col.green, col.blue, col.alpha);
614 - glDisable(GL_TEXTURE_2D);
615 - glBegin(GL_POLYGON);
617 - glVertex2f(x+w, y);
618 - glVertex2f(x+w, y+h);
619 - glVertex2f(x, y+h);
621 - glEnable(GL_TEXTURE_2D);
623 - glColor4f(0, 0, 0, 1);
624 +void fillrect(float x, float y, float w, float h, int r, int g, int b, int a)
626 + SDL_Surface* screen = SDL_GetVideoSurface();
637 + SDL_Rect src, rect;
638 + SDL_Surface *temp = NULL;
646 + temp = SDL_CreateRGBSurface(screen->flags, rect.w, rect.h, screen->format->BitsPerPixel, screen->format->Rmask, screen->format->Gmask, screen->format->Bmask, screen->format->Amask);
653 + SDL_FillRect(temp, &src, SDL_MapRGB(screen->format, r, g, b));
654 + SDL_SetAlpha(temp, SDL_SRCALPHA, a);
655 + SDL_BlitSurface(temp,0,screen,&rect);
656 + SDL_FreeSurface(temp);
659 + SDL_FillRect(screen, &rect, SDL_MapRGB(screen->format, r, g, b));
662 void fadeout(float fade_time)
664 - float alpha_inc = LOOP_DELAY / fade_time;
665 - Color c(0, 0, 0, alpha_inc);
667 + float alpha_inc = 256 / (fade_time / LOOP_DELAY);
670 - while(alpha >= 0) {
673 - fillrect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, c);
675 + fillrect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, 0,0,0, (int)alpha_inc); // left side
677 - SDL_GL_SwapBuffers();
678 + SDL_Flip(SDL_GetVideoSurface());
679 sound_manager->update();
681 SDL_Delay(int(LOOP_DELAY));
682 - alpha -= alpha_inc;
685 - fillrect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, Color());
686 + fillrect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT, 0, 0, 0, 255);
689 void shrink_fade(const Vector& point, float fade_time)
691 - float left_inc = point.x / (fade_time / LOOP_DELAY);
692 - float right_inc = (SCREEN_WIDTH - point.x) / (fade_time / LOOP_DELAY);
693 - float up_inc = point.y / (fade_time / LOOP_DELAY);
694 - float down_inc = (SCREEN_HEIGHT - point.y) / (fade_time / LOOP_DELAY);
695 + float left_inc = point.x / ((float)fade_time / LOOP_DELAY);
696 + float right_inc = (SCREEN_WIDTH - point.x) / ((float)fade_time / LOOP_DELAY);
697 + float up_inc = point.y / ((float)fade_time / LOOP_DELAY);
698 + float down_inc = (SCREEN_HEIGHT - point.y) / ((float)fade_time / LOOP_DELAY);
700 float left_cor = 0, right_cor = 0, up_cor = 0, down_cor = 0;
703 while(left_cor < point.x && right_cor < SCREEN_WIDTH - point.x &&
704 up_cor < point.y && down_cor < SCREEN_HEIGHT - point.y) {
705 @@ -101,15 +110,14 @@
707 down_cor += down_inc;
709 - fillrect(0, 0, left_cor, SCREEN_HEIGHT, c); // left side
710 - fillrect(SCREEN_WIDTH - right_cor, 0, right_cor, SCREEN_HEIGHT, c); // right side
711 - fillrect(0, 0, SCREEN_WIDTH, up_cor, c); // up side
712 - fillrect(0, SCREEN_HEIGHT - down_cor, SCREEN_WIDTH, down_cor+1, c); // down side
713 + fillrect(0, 0, left_cor, SCREEN_HEIGHT, 0,0,0, 255); // left side
714 + fillrect(SCREEN_WIDTH - right_cor, 0, right_cor, SCREEN_HEIGHT, 0,0,0, 255); // right side
715 + fillrect(0, 0, SCREEN_WIDTH, up_cor, 0,0,0, 255); // up side
716 + fillrect(0, SCREEN_HEIGHT - down_cor, SCREEN_WIDTH, down_cor+1, 0,0,0, 255); // down side
718 - SDL_GL_SwapBuffers();
719 + SDL_Flip(SDL_GetVideoSurface());
721 sound_manager->update();
722 SDL_Delay(int(LOOP_DELAY));
726 diff -Naur supertux/src/video/screen.hpp supertux-nogl/src/video/screen.hpp
727 --- supertux/src/video/screen.hpp 2006-04-07 03:32:13.000000000 +0200
728 +++ supertux-nogl/src/video/screen.hpp 2006-04-07 04:11:49.000000000 +0200
730 #define SUPERTUX_SCREEN_H
737 diff -Naur supertux/src/video/surface.cpp supertux-nogl/src/video/surface.cpp
738 --- supertux/src/video/surface.cpp 2006-03-25 01:16:31.000000000 +0100
739 +++ supertux-nogl/src/video/surface.cpp 2006-04-07 04:11:49.000000000 +0200
743 #include <SDL_image.h>
744 +#include <SDL_rotozoom.h>
746 #include "gameconfig.hpp"
747 #include "physfs/physfs_sdl.hpp"
750 texture = texture_manager->get(file);
754 - uv_right = texture->get_uv_right();
755 - uv_bottom = texture->get_uv_bottom();
757 - width = texture->get_image_width();
758 - height = texture->get_image_height();
761 + width = static_cast<int>(texture->get_image_width());
762 + height = static_cast<int>(texture->get_image_height());
767 Surface::Surface(const std::string& file, int x, int y, int w, int h)
769 texture = texture_manager->get(file);
772 - float tex_w = static_cast<float> (texture->get_width());
773 - float tex_h = static_cast<float> (texture->get_height());
774 - uv_left = static_cast<float>(x) / tex_w;
775 - uv_top = static_cast<float>(y) / tex_h;
776 - uv_right = static_cast<float>(x+w) / tex_w;
777 - uv_bottom = static_cast<float>(y+h) / tex_h;
787 Surface::Surface(const Surface& other)
789 texture = other.texture;
792 - uv_left = other.uv_left;
793 - uv_top = other.uv_top;
794 - uv_right = other.uv_right;
795 - uv_bottom = other.uv_bottom;
796 + offsetx = other.offsetx;
797 + offsety = other.offsety;
799 height = other.height;
801 + flipx = other.flipx;
807 texture = other.texture;
809 - uv_left = other.uv_left;
810 - uv_top = other.uv_top;
811 - uv_right = other.uv_right;
812 - uv_bottom = other.uv_bottom;
813 + offsetx = other.offsetx;
814 + offsety = other.offsety;
816 height = other.height;
818 + flipx = other.flipx;
827 + for (std::list<TransformedSurface*>::iterator i = transformedSurfaces.begin(); i != transformedSurfaces.end(); i++) {
828 + SDL_FreeSurface((*i)->surface);
836 - std::swap(uv_left, uv_right);
839 -static inline void intern_draw(float left, float top, float right, float bottom, float uv_left, float uv_top,
840 - float uv_right, float uv_bottom,
841 - DrawingEffect effect)
843 - if(effect & HORIZONTAL_FLIP)
844 - std::swap(uv_left, uv_right);
845 - if(effect & VERTICAL_FLIP) {
846 - std::swap(uv_top, uv_bottom);
850 - glTexCoord2f(uv_left, uv_top);
851 - glVertex2f(left, top);
853 - glTexCoord2f(uv_right, uv_top);
854 - glVertex2f(right, top);
856 - glTexCoord2f(uv_right, uv_bottom);
857 - glVertex2f(right, bottom);
859 - glTexCoord2f(uv_left, uv_bottom);
860 - glVertex2f(left, bottom);
866 Surface::draw(float x, float y, float alpha, DrawingEffect effect) const
868 - glColor4f(1.0f, 1.0f, 1.0f, alpha);
869 - glBindTexture(GL_TEXTURE_2D, texture->get_handle());
872 - x + width, y + height,
873 - uv_left, uv_top, uv_right, uv_bottom, effect);
874 + draw_part(0, 0, x, y, width, height, alpha, effect);
878 Surface::draw_part(float src_x, float src_y, float dst_x, float dst_y,
879 - float width, float height, float alpha,
880 + float width, float height, float,
881 DrawingEffect effect) const
883 - float uv_width = uv_right - uv_left;
884 - float uv_height = uv_bottom - uv_top;
886 - float uv_left = this->uv_left + (uv_width * src_x) / this->width;
887 - float uv_top = this->uv_top + (uv_height * src_y) / this->height;
888 - float uv_right = this->uv_left + (uv_width * (src_x + width)) / this->width;
889 - float uv_bottom = this->uv_top + (uv_height * (src_y + height)) / this->height;
891 - glColor4f(1.0f, 1.0f, 1.0f, alpha);
892 - glBindTexture(GL_TEXTURE_2D, texture->get_handle());
894 - intern_draw(dst_x, dst_y,
895 - dst_x + width, dst_y + height,
896 - uv_left, uv_top, uv_right, uv_bottom, effect);
897 + //FIXME: support parameter "alpha"
898 + SDL_Surface* surface = texture->getSurface();
900 + // get and check SDL_Surface
901 + if (surface == 0) {
902 + std::cerr << "Warning: Tried to draw NULL surface, skipped draw" << std::endl;
906 + SDL_Surface* transformedSurface = surface;
908 + if (flipx) effect = HORIZONTAL_FLIP;
910 + if (effect != NO_EFFECT) {
911 + transformedSurface = 0;
913 + // check if we have this effect buffered
914 + for (std::list<TransformedSurface*>::const_iterator i = transformedSurfaces.begin(); i != transformedSurfaces.end(); i++) {
915 + if ((*i)->effect == effect) transformedSurface = (*i)->surface;
918 + // if not: transform and buffer
919 + if (!transformedSurface) {
920 + if (effect == HORIZONTAL_FLIP) transformedSurface = zoomSurface(surface, -1, 1, 0);
921 + if (effect == VERTICAL_FLIP) transformedSurface = zoomSurface(surface, 1, -1, 0);
922 + if (transformedSurface == 0) {
923 + std::cerr << "Warning: No known transformation applies to surface, skipped draw" << std::endl;
926 + TransformedSurface* su = new TransformedSurface();
927 + su->surface = transformedSurface;
928 + su->effect = effect;
930 + transformedSurfaces.push_front(su);
934 + int ox = offsetx; if (effect == HORIZONTAL_FLIP) ox = static_cast<int>(surface->w) - (ox+static_cast<int>(width));
935 + int oy = offsety; if (effect == VERTICAL_FLIP) oy = static_cast<int>(surface->h) - (oy+static_cast<int>(height));
936 + // draw surface to screen
937 + SDL_Surface* screen = SDL_GetVideoSurface();
940 + srcRect.x = static_cast<int>(ox+src_x);
941 + srcRect.y = static_cast<int>(oy+src_y);
942 + srcRect.w = static_cast<int>(width);
943 + srcRect.h = static_cast<int>(height);
946 + dstRect.x = static_cast<int>(dst_x);
947 + dstRect.y = static_cast<int>(dst_y);
949 + SDL_BlitSurface(transformedSurface, &srcRect, screen, &dstRect);
952 diff -Naur supertux/src/video/surface.hpp supertux-nogl/src/video/surface.hpp
953 --- supertux/src/video/surface.hpp 2006-03-03 20:34:27.000000000 +0100
954 +++ supertux-nogl/src/video/surface.hpp 2006-04-07 04:11:49.000000000 +0200
956 #ifndef __SURFACE_HPP__
957 #define __SURFACE_HPP__
959 +#include <SDL_image.h>
969 + * Helper class to buffer a pre-transformed SDL_Surface
971 +class TransformedSurface {
973 + SDL_Surface* surface;
974 + DrawingEffect effect;
978 * A rectangular image.
979 * The class basically holds a reference to a texture with additional UV
980 * coordinates that specify a rectangular area on this texture
983 ImageTexture* texture;
991 + /** draw the surface on the screen, applying a ::DrawingEffect on-the-fly. Transformed Surfaces will be cached in ::transformedSurfaces */
992 void draw(float x, float y, float alpha, DrawingEffect effect) const;
994 + /** draw the surface on the screen, applying a ::DrawingEffect on-the-fly. Transformed Surfaces will be cached in ::transformedSurfaces */
995 void draw_part(float src_x, float src_y, float dst_x, float dst_y,
996 float width, float height,
997 float alpha, DrawingEffect effect) const;
1001 + int offsetx; /**< Region in ::surface to be used for blitting */
1002 + int offsety; /**< Region in ::surface to be used for blitting */
1003 + int width; /**< Region in ::surface to be used for blitting */
1004 + int height; /**< Region in ::surface to be used for blitting */
1006 + mutable std::list<TransformedSurface*> transformedSurfaces; /**< Cache for pre-transformed surfaces */
1009 Surface(const std::string& file);
1010 Surface(const std::string& file, int x, int y, int w, int h);
1011 diff -Naur supertux/src/video/texture.cpp supertux-nogl/src/video/texture.cpp
1012 --- supertux/src/video/texture.cpp 2006-03-03 20:34:27.000000000 +0100
1013 +++ supertux-nogl/src/video/texture.cpp 2006-04-07 04:11:49.000000000 +0200
1016 #include "texture.hpp"
1020 #include "glutil.hpp"
1023 return (v & (v-1)) == 0;
1026 -Texture::Texture(unsigned int w, unsigned int h, GLenum glformat)
1027 +Texture::Texture(unsigned int w, unsigned int h, GLenum)
1029 assert(is_power_of_2(w));
1030 assert(is_power_of_2(h));
1035 - assert_gl("before creating texture");
1036 - glGenTextures(1, &handle);
1039 - glBindTexture(GL_TEXTURE_2D, handle);
1041 - glTexImage2D(GL_TEXTURE_2D, 0, glformat, width, height, 0, GL_RGBA,
1042 - GL_UNSIGNED_BYTE, 0);
1044 - set_texture_params();
1046 - glDeleteTextures(1, &handle);
1053 -Texture::Texture(SDL_Surface* image, GLenum glformat)
1054 +Texture::Texture(SDL_Surface* image, GLenum)
1056 const SDL_PixelFormat* format = image->format;
1057 if(!is_power_of_2(image->w) || !is_power_of_2(image->h))
1058 throw std::runtime_error("image has no power of 2 size");
1059 if(format->BitsPerPixel != 24 && format->BitsPerPixel != 32)
1060 throw std::runtime_error("image has no 24 or 32 bit color depth");
1063 this->width = image->w;
1064 this->height = image->h;
1066 - assert_gl("before creating texture");
1067 - glGenTextures(1, &handle);
1070 - GLenum sdl_format;
1071 - if(format->BytesPerPixel == 3)
1072 - sdl_format = GL_RGB;
1073 - else if(format->BytesPerPixel == 4)
1074 - sdl_format = GL_RGBA;
1078 - glBindTexture(GL_TEXTURE_2D, handle);
1079 - glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
1080 - glPixelStorei(GL_UNPACK_ROW_LENGTH, image->pitch/format->BytesPerPixel);
1081 - glTexImage2D(GL_TEXTURE_2D, 0, glformat, width, height, 0, sdl_format,
1082 - GL_UNSIGNED_BYTE, image->pixels);
1084 - assert_gl("creating texture");
1086 - set_texture_params();
1088 - glDeleteTextures(1, &handle);
1091 + surface = SDL_DisplayFormatAlpha(image);
1096 - glDeleteTextures(1, &handle);
1100 Texture::set_texture_params()
1102 - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
1103 - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
1104 - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
1105 - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
1107 - assert_gl("set texture params");
1110 diff -Naur supertux/src/video/texture.hpp supertux-nogl/src/video/texture.hpp
1111 --- supertux/src/video/texture.hpp 2006-03-03 20:34:27.000000000 +0100
1112 +++ supertux-nogl/src/video/texture.hpp 2006-04-07 04:11:49.000000000 +0200
1114 #define __TEXTURE_HPP__
1118 +#include "glutil.hpp"
1121 * This class is a wrapper around a texture handle. It stores the texture width
1126 + SDL_Surface* surface; /**< non-GL branch stores optimized surface */
1128 friend class TextureManager;
1131 unsigned int height;
1134 Texture(SDL_Surface* surface, GLenum glformat);
1137 - GLuint get_handle() const
1142 unsigned int get_width() const
1149 + SDL_Surface* getSurface() {
1153 + void setSurface(SDL_Surface* surface) {
1154 + this->surface = surface;
1158 void set_texture_params();
1160 diff -Naur supertux/src/video/texture_manager.cpp supertux-nogl/src/video/texture_manager.cpp
1161 --- supertux/src/video/texture_manager.cpp 2006-04-07 03:32:13.000000000 +0200
1162 +++ supertux-nogl/src/video/texture_manager.cpp 2006-04-07 04:11:49.000000000 +0200
1166 #include <SDL_image.h>
1168 -#include <GL/glext.h>
1171 #include <stdexcept>
1172 @@ -126,12 +124,6 @@
1174 TextureManager::save_textures()
1176 - glPixelStorei(GL_PACK_ROW_LENGTH, 0);
1177 - glPixelStorei(GL_PACK_IMAGE_HEIGHT, 0);
1178 - glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
1179 - glPixelStorei(GL_PACK_SKIP_ROWS, 0);
1180 - glPixelStorei(GL_PACK_SKIP_IMAGES, 0);
1181 - glPixelStorei(GL_PACK_ALIGNMENT, 1);
1182 for(Textures::iterator i = textures.begin(); i != textures.end(); ++i) {
1185 @@ -146,75 +138,16 @@
1187 SavedTexture saved_texture;
1188 saved_texture.texture = texture;
1189 - glBindTexture(GL_TEXTURE_2D, texture->get_handle());
1190 - glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH,
1191 - &saved_texture.width);
1192 - glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT,
1193 - &saved_texture.height);
1194 - glGetTexLevelParameteriv(GL_TEXTURE_2D, 0, GL_TEXTURE_BORDER,
1195 - &saved_texture.border);
1196 - glGetTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
1197 - &saved_texture.min_filter);
1198 - glGetTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
1199 - &saved_texture.mag_filter);
1200 - glGetTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,
1201 - &saved_texture.wrap_s);
1202 - glGetTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T,
1203 - &saved_texture.wrap_t);
1205 size_t pixelssize = saved_texture.width * saved_texture.height * 4;
1206 saved_texture.pixels = new char[pixelssize];
1208 - glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE,
1209 - saved_texture.pixels);
1211 saved_textures.push_back(saved_texture);
1213 - glDeleteTextures(1, &(texture->handle));
1214 - texture->handle = 0;
1216 - assert_gl("retrieving texture for save");
1220 TextureManager::reload_textures()
1222 - glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
1223 - glPixelStorei(GL_UNPACK_IMAGE_HEIGHT, 0);
1224 - glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
1225 - glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
1226 - glPixelStorei(GL_UNPACK_SKIP_IMAGES, 0);
1227 - glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
1229 - for(std::vector<SavedTexture>::iterator i = saved_textures.begin();
1230 - i != saved_textures.end(); ++i) {
1231 - SavedTexture& saved_texture = *i;
1234 - glGenTextures(1, &handle);
1235 - assert_gl("creating texture handle");
1237 - glBindTexture(GL_TEXTURE_2D, handle);
1238 - glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
1239 - saved_texture.width, saved_texture.height,
1240 - saved_texture.border, GL_RGBA,
1241 - GL_UNSIGNED_BYTE, saved_texture.pixels);
1242 - delete[] saved_texture.pixels;
1243 - assert_gl("uploading texture pixel data");
1245 - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
1246 - saved_texture.min_filter);
1247 - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
1248 - saved_texture.mag_filter);
1249 - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,
1250 - saved_texture.wrap_s);
1251 - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T,
1252 - saved_texture.wrap_t);
1254 - assert_gl("setting texture_params");
1255 - saved_texture.texture->handle = handle;
1258 saved_textures.clear();
1261 diff -Naur supertux/src/video/texture_manager.hpp supertux-nogl/src/video/texture_manager.hpp
1262 --- supertux/src/video/texture_manager.hpp 2006-03-03 20:34:27.000000000 +0100
1263 +++ supertux-nogl/src/video/texture_manager.hpp 2006-04-07 04:11:49.000000000 +0200
1265 #ifndef __IMAGE_TEXTURE_MANAGER_HPP__
1266 #define __IMAGE_TEXTURE_MANAGER_HPP__
1269 +#include "video/glutil.hpp"