mirror of
https://gitlab.com/freepascal.org/fpc/source.git
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sekelsenmat
parent
7a7c574d1a
commit
64232f7876
1
.gitattributes
vendored
1
.gitattributes
vendored
@ -5293,6 +5293,7 @@ packages/opengles/Makefile svneol=native#text/plain
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packages/opengles/Makefile.fpc svneol=native#text/plain
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packages/opengles/examples/Makefile svneol=native#text/plain
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packages/opengles/examples/Makefile.fpc svneol=native#text/plain
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packages/opengles/examples/es2example1.pas svneol=native#text/pascal
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packages/opengles/examples/glutdemoes.pp svneol=native#text/plain
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packages/opengles/src/gles11.pp svneol=native#text/plain
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packages/opengles/src/gles20.pas svneol=native#text/pascal
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492
packages/opengles/examples/es2example1.pas
Normal file
492
packages/opengles/examples/es2example1.pas
Normal file
@ -0,0 +1,492 @@
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program es2example1;
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// By Benjamin 'BeRo' Rosseaux - benjamin@rosseaux.com - http://www.rosseaux.com
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// Tested on desktop linux and the Nokia N900 with Maemo 5
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{$ifdef fpc}
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{$mode delphi}
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{$ifdef CPUARM}
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{$define ogles}
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{$endif}
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{$ifdef CPUI386}
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{$define CPU386}
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{$endif}
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{$ifdef CPU386}
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{$asmmode intel}
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{$endif}
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{$endif}
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uses SysUtils,Classes,BaseUnix,Unix,UnixType,X,XLib,XUtil,XAtom{$ifdef ogles},gles20{$else},xf86vmode,GL,GLX,GLExt{$endif};
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const VertexArray:array[0..11] of single=(0,-1,0,1,
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1,1,0,1,
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-1,1,0,1);
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ShaderPrecode={$ifdef ogles}''{$else}'#version 120'#10{$endif};
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VertexShaderSource:string=ShaderPrecode+'attribute vec4 position;'#10+
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'varying mediump vec2 pos;'#10+
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'void main(){'#10+
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' gl_Position=position;'#10+
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' pos=position.xy;'#10+
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'}';
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FragmentShaderSource:string=ShaderPrecode+'varying mediump vec2 pos;'#10+
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'uniform mediump float phase;'#10+
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'void main(){'#10+
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' gl_FragColor=vec4(1.0,1.0,1.0,1.0)*sin(((pos.x*pos.x)+(pos.y*pos.y))*40.0+phase);'#10+
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'}';
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var ReturnCode,CanvasWidth,CanvasHeight:integer;
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Running:boolean;
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VertexShader,FragmentShader,ShaderProgram:TGLuint;
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PhaseLocation:TGLint;
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CurrentTime:int64;
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function GetTime:int64;
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var NowTime:TDateTime;
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Year,Month,Day,hour,min,sec,msec:word;
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begin
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NowTime:=Now;
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DecodeDate(NowTime,Year,Month,Day);
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DecodeTime(NowTime,hour,min,sec,msec);
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result:=(((((((((((Year*365)+Month)*31)+Day)*24)+hour)*60)+min)*60)+sec)*1000)+msec;
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end;
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procedure PrintShaderInfoLog(Shader:TGLUint;ShaderType:string);
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var len,Success:TGLint;
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Buffer:pchar;
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begin
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glGetShaderiv(Shader,GL_COMPILE_STATUS,@Success);
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if Success<>GL_TRUE then begin
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glGetShaderiv(Shader,GL_INFO_LOG_LENGTH,@len);
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if len>0 then begin
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getmem(Buffer,len+1);
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glGetShaderInfoLog(Shader,len,nil,Buffer);
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writeln(ShaderType,': ',Buffer);
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freemem(Buffer);
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Running:=false;
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ReturnCode:=1;
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end;
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end;
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end;
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function CreateShader(ShaderType:TGLenum;Source:pchar):TGLuint;
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begin
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result:=glCreateShader(ShaderType);
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glShaderSource(result,1,@Source,nil);
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glCompileShader(result);
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if ShaderType=GL_VERTEX_SHADER then begin
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PrintShaderInfoLog(result,'Vertex shader');
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end else begin
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PrintShaderInfoLog(result,'Fragment shader');
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end;
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end;
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procedure Init;
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begin
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ShaderProgram:=glCreateProgram();
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VertexShader:=CreateShader(GL_VERTEX_SHADER,pchar(VertexShaderSource));
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FragmentShader:=CreateShader(GL_FRAGMENT_SHADER,pchar(FragmentShaderSource));
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glAttachShader(ShaderProgram,VertexShader);
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glAttachShader(ShaderProgram,FragmentShader);
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glLinkProgram(ShaderProgram);
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glUseProgram(ShaderProgram);
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PhaseLocation:=glGetUniformLocation(ShaderProgram,'phase');
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if PhaseLocation<0 then begin
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writeln('Error: Cannot get phase shader uniform location');
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Running:=false;
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ReturnCode:=1;
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end;
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end;
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procedure Done;
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begin
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end;
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procedure Render;
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begin
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glViewPort(0,0,CanvasWidth,CanvasHeight);
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glClearColor(0,1,0,1);
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glClear(GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT);
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glUniform1f(PhaseLocation,(GetTime mod 2000)*0.001*pi);
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glVertexAttribPointer(0,4,GL_FLOAT,0,0,@VertexArray);
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glEnableVertexAttribArray(0);
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glDrawArrays(GL_TRIANGLE_STRIP,0,3);
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end;
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const MOUSE_MASK=ButtonPressMask or ButtonReleaseMask or PointerMotionMask or ButtonMotionMask;
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KEY_MASK=KeyPressMask or KeyReleaseMask or KeymapStateMask;
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X_MASK=KEY_MASK or MOUSE_MASK or VisibilityChangeMask or StructureNotifymask or ExposureMask;
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{$ifdef ogles}
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Attr:array[0..6] of EGLint=(EGL_BUFFER_SIZE,16,
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EGL_DEPTH_SIZE,8,
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EGL_RENDERABLE_TYPE,EGL_OPENGL_ES2_BIT,
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EGL_NONE);
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{ Attr:array[0..12] of EGLint=(EGL_BUFFER_SIZE,16,
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EGL_RED_SIZE,6,
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EGL_GREEN_SIZE,5,
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EGL_BLUE_SIZE,6,
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EGL_DEPTH_SIZE,8,
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EGL_RENDERABLE_TYPE,EGL_OPENGL_ES2_BIT,
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EGL_NONE);}
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CtxAttr:array[0..2] of EGLint=(EGL_CONTEXT_CLIENT_VERSION,2,EGL_NONE);
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{$else}
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Attr:array[0..8] of TGLint=(GLX_RGBA,
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GLX_RED_SIZE,1,
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GLX_GREEN_SIZE,1,
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GLX_BLUE_SIZE,1,
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GLX_DOUBLEBUFFER,
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none);
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{$endif}
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Title:string='GL test';
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var dpy:PXDisplay;
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win,root:TWindow;
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screennum,ScreenWidth,ScreenHeight:integer;
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screen:PScreen;
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visual:PVisual;
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Event:TXEvent;
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{$ifdef ogles}
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swa:TXSetWindowAttributes;
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ecfg:EGLConfig;
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num_config:EGLint;
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esfc:EGLSurface;
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ectxt:EGLContext;
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edpy:EGLDisplay;
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mouse_accel_numerator,mouse_accel_denominator,mouse_threshold:integer;
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{$else}
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WinAttr:TXSetWindowAttributes;
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GLXCont:GLXContext;
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WindowTitleProperty:TXTextProperty;
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visualinfo:PXVisualInfo;
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ErrorBase,EventBase:integer;
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{$endif}
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WM_DELETE_WINDOW:TAtom;
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procedure DisableComposition;
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{$ifdef ogles}
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const one:integer=1;
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{$endif}
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var xclient:TXClientMessageEvent;
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wm_state,fullscreen{$ifdef ogles},non_composited{$endif}:TAtom;
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begin
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wm_state:=XInternAtom(dpy,'_NET_WM_STATE',false);
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fullscreen:=XInternAtom(dpy,'_NET_WN_STATE_FULLSCREEN',false);
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XChangeProperty(dpy,win,wm_state,XA_ATOM,32,PropModeReplace,@fullscreen,1);
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XFlush(dpy);
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{$ifdef ogles}
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non_composited:=XInternAtom(dpy,'_HILDON_NON_COMPOSITED_WINDOW',false);
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XChangeProperty(dpy,win,non_composited,XA_INTEGER,32,PropModeReplace,@one,1);
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XFlush(dpy);
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{$endif}
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xclient._type:=ClientMessage;
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xclient.window:=win;
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xclient.message_type:=XInternAtom(dpy,'_NET_WM_STATE',false);
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xclient.format:=32;
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xclient.data.l[0]:=1;
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xclient.data.l[1]:=XInternAtom(dpy,'_NET_WM_STATE_FULLSCREEN',false);
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xclient.data.l[2]:=0;
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xclient.data.l[3]:=0;
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xclient.data.l[4]:=0;
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XSendEvent(dpy,root,false,SubstructureRedirectMask or SubstructureNotifyMask,PXEvent(pointer(@xclient)));
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XFlush(dpy);
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end;
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procedure SetEmptyMouseCursor;
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const bm_no_data:array[0..7] of byte=(0,0,0,0,0,0,0,0);
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var bm_no:TPixmap;
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cmap:TColormap;
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no_ptr:TCursor;
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black,dummy:TXColor;
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begin
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cmap:=DefaultColormap(Dpy,screennum);
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XAllocNamedColor(Dpy,cmap,'black',@black,@dummy);
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bm_no:=XCreateBitmapFromData(Dpy,Win,POINTER(@bm_no_data),8,8);
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no_ptr:=XCreatePixmapCursor(Dpy,bm_no,bm_no,@black,@black,0,0);
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XDefineCursor(Dpy,Win,no_ptr);
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XFreeCursor(Dpy,no_ptr);
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if bm_no<>None then begin
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XFreePixmap(Dpy,bm_no);
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end;
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XFreeColors(Dpy,cmap,@black.pixel,1,0);
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end;
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begin
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CurrentTime:=0;
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dpy:=XOpenDisplay(nil);
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if not assigned(dpy) then begin
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writeln('Error: Cannot connect to X server');
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halt(1);
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end;
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root:=DefaultRootWindow(dpy);
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screen:=XDefaultScreenOfDisplay(dpy);
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if not assigned(screen) then begin
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writeln('Error: Cannot get default screen');
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halt(1);
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end;
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ScreenWidth:=screen^.Width;
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ScreenHeight:=screen^.Height;
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screennum:=XDefaultScreen(dpy);
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visual:=XDefaultVisualOfScreen(screen);
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CanvasWidth:=ScreenWidth;
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CanvasHeight:=ScreenHeight;
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{$ifdef ogles}
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swa.event_mask:=X_MASK;
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win:=XCreateWindow(dpy,root,0,0,ScreenWidth,ScreenHeight,0,CopyFromParent,InputOutput,Visual,CWEventMask,@swa);
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WM_DELETE_WINDOW:=XInternAtom(dpy,'WM_DELETE_WINDOW',FALSE);
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XSetWMProtocols(dpy,win,@WM_DELETE_WINDOW,1);
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XFlush(dpy);
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DisableComposition;
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XMapWindow(dpy,win);
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XFlush(dpy);
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DisableComposition;
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XSelectInput(Dpy,Win,FocusChangeMask or KeyPressMask or KeyReleaseMask or PropertyChangeMask or StructureNotifyMask or KeymapStateMask or PointerMotionMask or EnterWindowMask or LeaveWindowMask or ButtonPressMask or ButtonReleaseMask or ExposureMask);
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XStoreName(dpy,win,pchar(Title));
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XFlush(dpy);
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XMoveWindow(dpy,win,0,0);
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XRaiseWindow(dpy,win);
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//XWarpPointer(dpy,None,win,0,0,0,0,0,0);
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XFlush(dpy);
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SetEmptyMouseCursor;
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XGrabPointer(dpy,win,true,MOUSE_MASK,GrabModeAsync,GrabModeAsync,win,None,CurrentTime);
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XFlush(dpy);
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XGetPointerControl(dpy,@mouse_accel_numerator,@mouse_accel_denominator,@mouse_threshold);
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XFlush(dpy);
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XChangePointerControl(dpy,1,1,1,1,0);
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XFlush(dpy);
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XGrabKeyboard(dpy,win,false,GrabModeAsync,GrabModeAsync,CurrentTime);
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XFlush(dpy);
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edpy:=eglGetDisplay(dpy);
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if edpy=EGL_NO_DISPLAY then begin
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writeln('Error: Got no EGL display');
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halt(1);
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end;
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if eglInitialize(edpy,nil,nil)=0 then begin
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writeln('Error: Unable to initialize EGL');
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halt(1);
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end;
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num_config:=0;
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if eglChooseConfig(edpy,@Attr,@ecfg,1,@num_config)=0 then begin
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writeln('Error: Failed to choose config (',eglGetError,')');
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halt(1);
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end;
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if num_config<>1 then begin
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writeln('Error: Didn''t get exactly config but ',num_config);
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halt(1);
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end;
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esfc:=eglCreateWindowSurface(edpy,ecfg,win,nil);
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if esfc=EGL_NO_SURFACE then begin
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writeln('Error: Unable to create EGL surface (',eglGetError,')');
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halt(1);
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end;
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ectxt:=eglCreateContext(edpy,ecfg,EGL_NO_CONTEXT,@CtxAttr);
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if ectxt=EGL_NO_CONTEXT then begin
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writeln('Error: Unable to create EGL context (',eglGetError,')');
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halt(1);
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end;
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eglMakeCurrent(edpy,esfc,esfc,ectxt);
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{$else}
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InitGLX;
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if not glXQueryExtension(dpy,ErrorBase,EventBase) then begin
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writeln('Error: GLX extension not supported');
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halt(1);
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end;
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visualinfo:=glXChooseVisual(dpy,screennum,Attr);
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if not assigned(Visualinfo) THEN BEGIN
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writeln('Error: Could not find visual info');
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exit;
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end;
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WinAttr.colormap:=XCreateColormap(dpy,root,VisualInfo.Visual,AllocNone);
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WinAttr.border_pixel:=0;
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WinAttr.background_pixel:=0;
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WinAttr.event_mask:=X_MASK;
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WinAttr.override_redirect:=1;
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WinAttr.backing_store:=NotUseful;
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WinAttr.save_under:=0;
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Win:=XCreateWindow(dpy,root,0,0,ScreenWidth,ScreenHeight,0,VisualInfo.Depth,InputOutput,VisualInfo.Visual,CWOverrideRedirect or CWBackPixel or CWColormap or CWBackingStore or CWSaveUnder or CWEventMask,@WinAttr);
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XSelectInput(Dpy,Win,FocusChangeMask or KeyPressMask or KeyReleaseMask or PropertyChangeMask or StructureNotifyMask or KeymapStateMask or PointerMotionMask or EnterWindowMask or LeaveWindowMask or ButtonPressMask or ButtonReleaseMask or ExposureMask);
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XStringListToTextProperty(@Title,1,@WindowTitleProperty);
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XSetWMName(Dpy,Win,@WindowTitleProperty);
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glXCont:=glXCreateContext(Dpy,VisualInfo,none,true);
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if not assigned(glXCont) then begin
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writeln('Error: Could not create an OpenGL rendering context');
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halt(1);
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end;
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DisableComposition;
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XMapWindow(Dpy,Win);
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XFlush(dpy);
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DisableComposition;
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glXMakeCurrent(Dpy,Win,glXCont);
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SetEmptyMouseCursor;
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XMoveWindow(dpy,win,0,0);
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XRaiseWindow(dpy,win);
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XWarpPointer(dpy,None,win,0,0,0,0,0,0);
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XFlush(dpy);
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XF86VidmodeSetViewPort(dpy,screennum,0,0);
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XFlush(dpy);
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XGrabPointer(dpy,win,true,MOUSE_MASK,GrabModeAsync,GrabModeAsync,win,None,CurrentTime);
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XGrabKeyboard(dpy,win,false,GrabModeAsync,GrabModeAsync,CurrentTime);
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XFlush(dpy);
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XAutoRepeatOn(Dpy);
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XFlush(dpy);
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WM_DELETE_WINDOW:=XInternAtom(dpy,'WM_DELETE_WINDOW',FALSE);
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XSetWMProtocols(dpy,win,@WM_DELETE_WINDOW,1);
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XFlush(Dpy);
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CanvasWidth:=ScreenWidth;
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CanvasHeight:=ScreenHeight;
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if assigned(visual) then begin
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// Den Compiler befriedigen, so dass der kein Warning deswegen ausspuckt :)
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end;
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{$endif}
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Running:=true;
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ReturnCode:=0;
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{$ifndef ogles}
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if not (Load_GL_version_1_2 and Load_GL_version_1_3 and Load_GL_version_1_4 and Load_GL_version_2_0) then begin
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Running:=false;
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writeln('Error: Cannot load OpenGL 2.0 API');
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ReturnCode:=1;
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end;
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{$endif}
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if Running then begin
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Init;
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CurrentTime:=GetTime;
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end;
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while Running do begin
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while XPending(Dpy)>0 do begin
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XNextEvent(Dpy,@Event);
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case Event._type of
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ClientMessage:BEGIN
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if (Event.xclient.format=32) and (longword(Event.xclient.Data.l[0])=longword(WM_DELETE_WINDOW)) then begin
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Running:=false;
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end;
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end;
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Expose:begin
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end;
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ConfigureNotify:begin
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end;
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MotionNotify:begin
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// Running:=false;
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end;
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ButtonPress:begin
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Running:=false;
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end;
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ButtonRelease:begin
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Running:=false;
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end;
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KeyMapNotify:begin
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end;
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KeyPress:begin
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Running:=false;
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end;
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||||
|
||||
KeyRelease:begin
|
||||
Running:=false;
|
||||
end;
|
||||
|
||||
end;
|
||||
|
||||
end;
|
||||
|
||||
CurrentTime:=GetTime;
|
||||
Render;
|
||||
|
||||
{$ifdef ogles}
|
||||
eglSwapBuffers(edpy,esfc);
|
||||
{$else}
|
||||
glXSwapBuffers(dpy,win);
|
||||
{$endif}
|
||||
|
||||
XFlush(dpy);
|
||||
|
||||
end;
|
||||
if ReturnCode=0 then begin
|
||||
Done;
|
||||
end;
|
||||
|
||||
{$ifdef ogles}
|
||||
XChangePointerControl(dpy,1,1,mouse_accel_numerator,mouse_accel_denominator,mouse_threshold);
|
||||
XUngrabPointer(dpy,CurrentTime);
|
||||
XUngrabKeyboard(dpy,CurrentTime);
|
||||
eglDestroyContext(edpy,ectxt);
|
||||
eglDestroySurface(edpy,esfc);
|
||||
eglTerminate(edpy);
|
||||
{$else}
|
||||
XUngrabPointer(dpy,CurrentTime);
|
||||
XUngrabKeyboard(dpy,CurrentTime);
|
||||
glXDestroyContext(dpy,glxCont);
|
||||
{$endif}
|
||||
|
||||
XDestroyWindow(dpy,win);
|
||||
XCloseDisplay(dpy);
|
||||
|
||||
halt(ReturnCode);
|
||||
end.
|
||||
Loading…
Reference in New Issue
Block a user