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terrain viewer: update to 64bit, SDL2, imgui

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This commit is contained in:
dpethes 2020-06-13 11:54:46 +02:00
parent a6a79620b4
commit 909cfe5a97
3 changed files with 163 additions and 76 deletions
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2
terrain_viewer/terrain_mesh.pas
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@ -316,6 +316,8 @@ begin
else
glDrawElements(GL_TRIANGLES, b.blocks * FacesPerBlock * 3, GL_UNSIGNED_INT, b.face_indices);
end;
if opts.wireframe then
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL)
end;
end.

17
terrain_viewer/terrain_viewer.lpi
View File

@ -41,7 +41,7 @@
<PackageName Value="LCL"/>
</Item1>
</RequiredPackages>
<Units Count="5">
<Units Count="8">
<Unit0>
<Filename Value="terrain_viewer.pas"/>
<IsPartOfProject Value="True"/>
@ -62,6 +62,19 @@
<Filename Value="..\rs_units\rs_dat.pas"/>
<IsPartOfProject Value="True"/>
</Unit4>
<Unit5>
<Filename Value="imgui\fpimgui.pas"/>
<IsPartOfProject Value="True"/>
</Unit5>
<Unit6>
<Filename Value="imgui\fpimgui_impl_sdlgl2.pas"/>
<IsPartOfProject Value="True"/>
</Unit6>
<Unit7>
<Filename Value="sdl2\sdl2.pas"/>
<IsPartOfProject Value="True"/>
<UnitName Value="SDL2"/>
</Unit7>
</Units>
</ProjectOptions>
<CompilerOptions>
@ -72,7 +85,7 @@
</Target>
<SearchPaths>
<IncludeFiles Value="$(ProjOutDir)"/>
<OtherUnitFiles Value="..\rs_units"/>
<OtherUnitFiles Value="..\rs_units;imgui;sdl2"/>
<UnitOutputDirectory Value="lib\$(TargetCPU)-$(TargetOS)"/>
</SearchPaths>
</CompilerOptions>

220
terrain_viewer/terrain_viewer.pas
View File

@ -21,15 +21,12 @@ program terrain_viewer;
uses
sysutils, math,
gl, glu, glext, sdl,
gl, glu, glext, gvector, sdl2, fpimgui, fpimgui_impl_sdlgl2,
terrain_mesh, rs_dat, rs_world;
const
SCR_W_fscrn = 1024;
SCR_H_fscrn = 768;
SCR_W_INIT = 1280;
SCR_H_INIT = 720;
SCREEN_BPP = 0;
RotationAngleIncrement = 1;
ZoomIncrement = 0.3;
MouseZoomDistanceMultiply = 0.15;
@ -37,12 +34,13 @@ const
MouseTranslateMultiply = 0.025;
var
g_window: PSDL_Window;
g_ogl_context: TSDL_GLContext;
g_rsdata: TRSDatFile;
g_levels: TLevelList;
g_selected_level_idx: integer = 0;
surface: PSDL_Surface;
done,
fullscreen: boolean;
terrain: TTerrainMesh;
view: record
@ -51,7 +49,7 @@ var
pitch: single;
x, y: single;
autorotate: boolean;
opts: TRenderOpts;
render: TRenderOpts;
end;
mouse: record
@ -62,7 +60,7 @@ var
end;
procedure ReportError(s: string);
procedure AppError(s: string);
begin
writeln(s);
halt;
@ -104,7 +102,7 @@ end;
// function to reset our viewport after a window resize
procedure ResizeWindow( width, height : integer );
procedure SetGLWindowSize( width, height : integer );
begin
if ( height = 0 ) then
height := 1; // Protect against a divide by zero
@ -118,11 +116,36 @@ begin
glLoadIdentity; // Reset The View
end;
procedure DrawGui;
var
item: TLevelListItem;
i: Integer;
begin
Imgui.Begin_('Rendering options');
Imgui.Checkbox('points', @view.render.points);
Imgui.Checkbox('wireframe', @view.render.wireframe);
Imgui.End_;
Imgui.Begin_('Level list');
for i := 0 to g_levels.Size - 1 do begin
item := g_levels[i];
//some levels are broken atm
if i in [7, 9, 15] then
continue;
if Imgui.Selectable(item.name, g_selected_level_idx = i) then begin
g_selected_level_idx := i;
terrain.Free;
terrain := TTerrainMesh.Create;
terrain.Load(g_levels[i]);
terrain.InitGL;
end;
end;
Imgui.End_;
end;
// The main drawing function.
procedure DrawGLScene;
procedure DrawTerrain;
begin
glClear( GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT );
glMatrixMode( GL_MODELVIEW );
glLoadIdentity;
@ -138,24 +161,73 @@ begin
if view.rotation_angle > 360 then
view.rotation_angle -= 360;
terrain.DrawGL(view.opts);
SDL_GL_SwapBuffers;
terrain.DrawGL(view.render);
end;
procedure BeginScene;
var
style: PImGuiStyle;
begin
ImGui_ImplSdlGL2_NewFrame(g_window);
style := Imgui.GetStyle();
style^.WindowRounding := 0;
glClear( GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT );
end;
procedure EndScene;
begin
glDisable(GL_LIGHTING);
igRender;
glEnable(GL_LIGHTING);
SDL_GL_SwapWindow(g_window);
end;
procedure SetMode(w, h: word; fullscreen: boolean = false);
procedure WindowInit(w_width, w_height: integer);
var
flags: UInt32;
ver: TSDL_Version;
x, y: integer;
flags: longword;
io: PImGuiIO;
begin
if fullscreen then
flags := SDL_OPENGL or SDL_FULLSCREEN
else
flags := SDL_OPENGL or SDL_RESIZABLE;
surface := SDL_SetVideoMode( w, h, SCREEN_BPP, flags);
if surface = nil then
ReportError('SDL_SetVideoMode failed');
SDL_WM_SetCaption('HOB viewer', nil);
SDL_GetVersion(@ver);
writeln(format('SDL %d.%d.%d', [ver.major, ver.minor, ver.patch]));
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
SDL_GL_SetAttribute(SDL_GL_BUFFER_SIZE, 32);
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_ALPHA_SIZE, 8);
WriteLn('init window: ', w_width, 'x', w_height);
x := SDL_WINDOWPOS_CENTERED;
y := SDL_WINDOWPOS_CENTERED;
flags := SDL_WINDOW_SHOWN or SDL_WINDOW_OPENGL or SDL_WINDOW_RESIZABLE;
g_window := SDL_CreateWindow('RS terrain viewer', x, y, w_width, w_height, flags);
if g_window = nil then
AppError ('SDL_CreateWindow failed. Reason: ' + SDL_GetError());
g_ogl_context := SDL_GL_CreateContext(g_window);
if g_ogl_context = nil then begin
writeln ('SDL_GL_CreateContext failed. Reason: ' + SDL_GetError());
halt;
end;
SDL_GL_SetSwapInterval(1); //enable VSync
//setup imgui
io := igGetIO();
io^.DisplaySize.x := w_width;
io^.DisplaySize.y := w_height;
ImGui_ImplSdlGL2_Init();
end;
procedure WindowFree;
begin
ImGui_ImplSdlGL2_Shutdown();
SDL_GL_DeleteContext(g_ogl_context);
SDL_DestroyWindow(g_window);
end;
@ -189,51 +261,46 @@ end;
procedure InitView;
begin
view.rotation_angle := 0;
view.distance := 6;
view.pitch := 0;
view.distance := 160;
view.pitch := 36;
view.x := 0;
view.y := 0;
view.y := 10;
view.autorotate := false;
view.opts.wireframe := false;
view.opts.points := false;
view.opts.vcolors := true;
view.opts.textures := true;
view.render.wireframe := false;
view.render.points := false;
view.render.vcolors := true;
view.render.textures := true;
end;
procedure HandleEvent;
procedure HandleEvent(const event: TSDL_Event; var done: boolean);
var
event: TSDL_Event;
io: PImGuiIO;
begin
SDL_PollEvent( @event );
ImGui_ImplSdlGL2_ProcessEvent(@event);
io := igGetIO();
if ((event.type_ = SDL_MOUSEBUTTONDOWN) or
(event.type_ = SDL_MOUSEBUTTONUP) or
(event.type_ = SDL_MOUSEWHEEL) or
(event.type_ = SDL_MOUSEMOTION)) and io^.WantCaptureMouse then
exit;
if ((event.type_ = SDL_KEYDOWN) or (event.type_ = SDL_KEYUP)) and io^.WantCaptureKeyboard then
exit;
case event.type_ of
SDL_QUITEV:
Done := true;
SDL_VIDEORESIZE:
begin
SetMode (event.resize.w, event.resize.h);
ResizeWindow( surface^.w, surface^.h );
end;
SDL_WINDOWEVENT: begin
if event.window.event = SDL_WINDOWEVENT_RESIZED then
SetGLWindowSize(event.window.data1, event.window.data2);
end;
SDL_KEYDOWN:
case event.key.keysym.sym of
SDLK_ESCAPE:
Done := true;
SDLK_F1: begin
if not fullscreen then begin
SetMode(SCR_W_fscrn, SCR_H_fscrn, true);
fullscreen := true;
end else begin
SetMode(SCR_W_INIT, SCR_H_INIT, false);
fullscreen := false;
end;
InitGL;
terrain.InitGL;
ResizeWindow( surface^.w, surface^.h );
end;
SDLK_s:
WindowScreenshot( surface^.w, surface^.h );
WindowScreenshot(g_window^.w, g_window^.h);
SDLK_PAGEUP:
view.distance += ZoomIncrement;
SDLK_PAGEDOWN:
@ -243,17 +310,17 @@ begin
//terrain rendering opts
SDLK_w:
view.opts.wireframe := not view.opts.wireframe;
view.render.wireframe := not view.render.wireframe;
SDLK_v:
view.opts.vcolors := not view.opts.vcolors;
view.render.vcolors := not view.render.vcolors;
SDLK_p:
view.opts.points := not view.opts.points;
view.render.points := not view.render.points;
SDLK_t:
view.opts.textures := not view.opts.textures;
view.render.textures := not view.render.textures;
SDLK_LEFT:
view.opts.fg_to_draw := max(0, view.opts.fg_to_draw - 1);
view.render.fg_to_draw := max(0, view.render.fg_to_draw - 1);
SDLK_RIGHT:
view.opts.fg_to_draw += 1;
view.render.fg_to_draw += 1;
end;
SDL_MOUSEBUTTONDOWN: begin
@ -265,15 +332,17 @@ begin
mouse.last_y := event.button.y;
view.autorotate := false;
end;
if event.button.button = 5 then
view.distance += view.distance * MouseZoomDistanceMultiply;
if event.button.button = 4 then
view.distance -= view.distance * MouseZoomDistanceMultiply;
end;
SDL_MOUSEBUTTONUP: begin
mouse.drag := false;
view.autorotate := mouse.resume_autorotate_on_release;
end;
SDL_MOUSEWHEEL: begin
if event.wheel.y < 0 then
view.distance += view.distance * MouseZoomDistanceMultiply;
if event.wheel.y > 0 then
view.distance -= view.distance * MouseZoomDistanceMultiply;
end;
SDL_MOUSEMOTION: begin
if mouse.drag then begin
@ -348,6 +417,8 @@ end;
//******************************************************************************
var
sec, frames: integer;
event: TSDL_Event;
done: boolean;
begin
if not (FileExists(RS_DATA_HDR) and FileExists(RS_DATA_DAT)) then begin
@ -362,16 +433,14 @@ begin
LoadLevelFilelist;
terrain := TTerrainMesh.Create;
terrain.Load(g_levels[0]);
terrain.Load(g_levels[g_selected_level_idx]);
writeln('Init SDL...');
SDL_Init( SDL_INIT_VIDEO );
SDL_GL_SetAttribute( SDL_GL_DOUBLEBUFFER, 1 );
SetMode(SCR_W_INIT, SCR_H_INIT);
SDL_Init(SDL_INIT_VIDEO or SDL_INIT_TIMER);
WindowInit(SCR_W_INIT, SCR_H_INIT);
writeln('Init OpenGL...');
InitGL;
ResizeWindow( surface^.w, surface^.h );
SetGLWindowSize(g_window^.w, g_window^.h);
InitView;
terrain.InitGL;
@ -380,15 +449,18 @@ begin
frames := 0;
Done := False;
while not Done do begin
HandleEvent;
DrawGLScene;
BeginScene;
DrawTerrain;
DrawGui;
EndScene;
while SDL_PollEvent(@event) > 0 do
HandleEvent(event, done);
frames += 1;
if (SDL_GetTicks - sec) >= 1000 then begin
write(frames:3, ' dist: ', view.distance:5:1, ' rot: ', view.rotation_angle:5:1, #13);
frames := 0;
sec := SDL_GetTicks;
//WindowScreenshot( surface^.w, surface^.h );
end;
SDL_Delay(10);
end;