OpenGL -- Easy Peazy Lemon Freezy

Monkey Targets Forums/Desktop/OpenGL -- Easy Peazy Lemon Freezy

AdamRedwoods (Posted 2011) [#1]

Easy Peazy Lemon Freezy. I see potential problems, but I don't see any obstacles. I also see how this can work for Android and iOS, so...... *Updated to now use vertex arrays. example: Import mojo Import monkeyGL Function Main() Local myGame:Game = New Game End Function Class Game Extends App Field yrot:Float Method OnCreate() SetUpdateRate 60 End Method OnUpdate() Local ms:Int If KeyHit(KEY_ESCAPE) Then Error "" End Method OnRender() Cls glOnRender() ''switch to zdepth viewport glMatrixMode (GL_PROJECTION) glLoadIdentity () glFrustum(0.0, 0.5, 0.5, 0.0, 1.0, 100.0) glMatrixMode (GL_MODELVIEW) glLoadIdentity () glTranslatef(0.75,0.75,-3) glRotatef(yrot,0,1,1) 'glRotatef(yrot,0,0,1) 'glTranslatef(DeviceWidth*0.5,DeviceHeight*0.5,-5) glColor4f(1.0,0.0,0.0,1.0) Local vertices:Float[] = [-0.5,-0.125,0.0, -0.25,-0.125,0.0, -0.375,0.125,0.0, 0.25,-0.125,0.0, 0.5,-0.125,0.0, 0.375,0.125,0.0] glBindBuffer( GL_ARRAY_BUFFER, 0 ) glEnableClientState(GL_VERTEX_ARRAY) glDisableClientState(GL_COLOR_ARRAY) glVertexPointer(3, GL_FLOAT, 0, FloatPtr(vertices) ) glDrawArrays(GL_TRIANGLES, 0, vertices.Length()/3) glDisableClientState(GL_VERTEX_ARRAY) yrot +=2 If yrot >360 Then yrot =0 DrawText( "monkeyGL ", 1,0) ''switch back to 2d viewport 'glMatrixMode (GL_PROJECTION) 'glLoadIdentity () 'glOrtho(0.0, DeviceWidth(), DeviceHeight(), 0.0, -1.0, 1.0) End End partial module: monkeyGL.monkey '' '' monkeyGL '' exposing opengl commands to monkey '' '' 2011 - Adam Piette ' #if TARGET = "glfw" Or TARGET = "mingw" Import "monkeyGL.cpp" #endif Const GL_POINTS = $0000 Const GL_LINES = $0001 Const GL_LINE_LOOP = $0002 Const GL_LINE_STRIP = $0003 'Const GL_TRIANGLES = $0004 Const GL_TRIANGLE_STRIP = $0005 Const GL_TRIANGLE_FAN = $0006 Const GL_QUADS = $0007 Const GL_QUAD_STRIP = $0008 Const GL_POLYGON = $0009 Const GL_VERTEX_ARRAY = $8074 Const GL_NORMAL_ARRAY = $8075 Const GL_COLOR_ARRAY = $8076 Const GL_INDEX_ARRAY = $8077 Const GL_TEXTURE_COORD_ARRAY = $8078 Const GL_EDGE_FLAG_ARRAY = $8079 Const GL_MODELVIEW = $1700 Const GL_PROJECTION = $1701 Const GL_TEXTURE = $1702 Const GL_BYTE = $1400 Const GL_UNSIGNED_BYTE = $1401 Const GL_SHORT = $1402 Const GL_UNSIGNED_SHORT = $1403 Const GL_INT = $1404 Const GL_UNSIGNED_INT = $1405 Const GL_FLOAT = $1406 Const GL_2_BYTES = $1407 Const GL_3_BYTES = $1408 Const GL_4_BYTES = $1409 Const GL_DOUBLE = $140A Const GL_DOUBLE_EXT = $140A Const GL_ARRAY_BUFFER = $8892 #if TARGET = "glfw" Or TARGET = "mingw" Extern Global GL_TRIANGLES = "GL_TRIANGLES" Function glOnRender() = " //" Function glColor3f(x:Float,y:Float,z:Float) = "glColor3f" Function glColor4f(x:Float,y:Float,z:Float, a:Float) = "glColor4f" Function glBegin(glEnum:Int) = "glBegin" Function glVertex3f(x:Float,y:Float,z:Float) = "glVertex3f" Function glEnd() = "glEnd" Function glTranslatef(x:Float,y:Float,z:Float) = "glTranslatef" Function glEnableClientState(glEnum:Int) = "glEnableClientState" Function glDisableClientState(glEnum:Int) = "glDisableClientState" Function glMatrixMode(glEnum:Int) = "glMatrixMode" Function glLoadIdentity() = "glLoadIdentity" Function glOrtho(left:Float, right:Float, bottom:Float, top:Float, near:Float, far:Float) = "glOrtho" Function glFrustum(left:Float, right:Float, bottom:Float, top:Float, zNear:Float, zFar:Float) = "glFrustum" 'Function gluPerspective(i:Float, ratio:Float, near:Float, far:Float)= "gluPerspective" Function glRotatef(x:Float,y:Float,z:Float,w:Float) = "glRotatef" Function glVertexPointer(size:Int, type:Int, stride:Int, bufferPointer:Int) = "glVertexPointer" Function glDrawArrays(mode:Int, first:Int, count:Int) ="glDrawArrays" Function glBindBuffer(target:Int, buffer:Int) = " " ''opengl 1.5 or opengl es Function FloatPtr:Int(a:Float[]) = "GetArrayPointer" ''cpp hack Function IntPtr:Int(a:Int[]) = "GetArrayPointer" ''cpp hack 'Function glForceTest() = "glVertexPointer( ); //" #endif monkeyGL.cpp template<class T> T * GetArrayPointer(Array<T> t) { //return t.rep->data; return &t.At(0); };

DruggedBunny (Posted 2011) [#2]

Nice! You could become a god among men if you're not careful...

JIM (Posted 2011) [#3]

This could definitely work. Android/iOS are GL-based and HTML5 has a friend called WebGL.

Uncle (Posted 2011) [#4]

Would open up a whole lot of fun if this would work on Android. Currently it doesnt compile as the doesn't recognise the method names and complains about unchecked or unsafe operations. I wish I knew more java to debug this myself. Anyone have any ideas?

AdamRedwoods (Posted 2011) [#5]

I'm still working on the Android. My triangles are off the screen, not sure why.

Uncle (Posted 2011) [#6]

That sounds great Adam. Can you give us some tips on how you got past the compile errors?

AdamRedwoods (Posted 2011) [#7]

Moved to here for other targets: http://www.monkeycoder.co.nz/Community/posts.php?topic=1818 re:tips on compiling I had to write the Android part with many hacks for Java.