//*************
// Marshal data
//*************
//Graphics
var glContext = GRAPHICS.getContext();
//Time
var time = TIME.getTime();//should be moved
//Current camera
var viewMatrix = GRAPHICS.getActiveCamera().getViewMatrix();//This should be part of a camera
var projectionMatrix = GRAPHICS.getActiveCamera().getProjectionMatrix();//this should be part of a camera
//This gameobject
var VertexArray = aMesh.getVertexBuffer();
var shaderProgram = aMesh.getShader();
var texture = aMesh.getMainTexture();
//Model Scale
var modelScale = aMesh.getGameObject().getTransform().getLocalScaleMatrix();
//Model Rotation
var rotation = aMesh.getGameObject().getTransform().getLocalRotationMatrix();
//This transform
var object2WorldMatrix = aMesh.getGameObject().getTransform().getWorldMatrix();
//Camera pos
var cameraPosition = GRAPHICS.getActiveCamera().getGameObject().getTransform().getPosition();
//*****************
// Set capabilities
//*****************
glContext.enable (glContext.DEPTH_TEST);
glContext.enable (glContext.CULL_FACE);
glContext.cullFace(glContext.BACK);
//********************
// Prepare vertex data
//********************
glContext.bindBuffer( glContext.ARRAY_BUFFER, VertexArray );
glContext.vertexAttribPointer
(
shaderProgram.vertexPositionAttribute,
3, //Pos size
glContext.FLOAT,
false,
4*(3+2+3), //stride is size of vertex format in bytes. 4 is float size, 3 pos, 2 uv
0
);
//UV attribute pointer
glContext.vertexAttribPointer
(
shaderProgram.uvAttribute,
2, //UV size
glContext.FLOAT,
false,
4*(3+2+3), //stride is size of vertex format in bytes. 4 is float size, 3 pos, 2 uv
4*3
);
//Normal attribute pointer
glContext.vertexAttribPointer
(
shaderProgram.normalAttribute,
3, //Normal size
glContext.FLOAT,
false,
4*(3+2+3), //stride is size of vertex format in bytes. 4 is float size, 3 pos, 2 uv
4*(3+2)
);
//************
// Prep shader
//************
glContext.useProgram(shaderProgram);
shaderProgram.vertexPositionAttribute = glContext.getAttribLocation( shaderProgram, "a_Pos" );
glContext.enableVertexAttribArray( shaderProgram.vertexPositionAttribute);
shaderProgram.uvAttribute = glContext.getAttribLocation( shaderProgram, "a_UV" );
glContext.enableVertexAttribArray( shaderProgram.uvAttribute );
shaderProgram.normalAttribute = glContext.getAttribLocation( shaderProgram, "a_Normal" );
glContext.enableVertexAttribArray( shaderProgram.normalAttribute );
//*********************
// Pass in uniform data
//*********************
//Time uniform
var uTime = glContext.getUniformLocation(shaderProgram,"_Time");
if (uTime != -1)
glContext.uniform1f(uTime, time);
//ModelScale uniform
var uModelScaleMatrix = glContext.getUniformLocation(shaderProgram,"_ModelScaleMatrix");
if (uModelScaleMatrix != -1)
glContext.uniformMatrix4fv(uModelScaleMatrix, false, modelScale);
//ModelRotation uniform
var uModelRotationMatrix = glContext.getUniformLocation(shaderProgram,"_ModelRotationMatrix");
if (uModelRotationMatrix != -1)
glContext.uniformMatrix4fv(uModelRotationMatrix, false, rotation);
//Model translation matrix uniform
var uObject2WorldMatrix = glContext.getUniformLocation(shaderProgram,"_Object2WorldMatrix");
if (uObject2WorldMatrix != -1)
glContext.uniformMatrix4fv(uObject2WorldMatrix, false, object2WorldMatrix);
//View matrix uniform
var uViewMatrix = glContext.getUniformLocation(shaderProgram,"_ViewMatrix");
if (uViewMatrix != -1)
glContext.uniformMatrix4fv(uViewMatrix, false, viewMatrix);
//Projection matrix uniform
var uProjectionMatrix = glContext.getUniformLocation(shaderProgram,"_ProjectionMatrix");
if (uProjectionMatrix != -1)
glContext.uniformMatrix4fv(uProjectionMatrix, false, projectionMatrix);
//Texture uniform
glContext.activeTexture(glContext.TEXTURE0);
glContext.bindTexture (glContext.TEXTURE_2D, texture);
glContext.uniform1i (glContext.getUniformLocation(shaderProgram, "_Texture"), 0);
//Camera world position uniform
var uCameraWorldPosition = glContext.getUniformLocation(shaderProgram,"_CameraPos");
if (uCameraWorldPosition != -1)
glContext.uniform3fv(uCameraWorldPosition,cameraPosition);
//*****
// draw
//*****
glContext.drawArrays( glContext.TRIANGLES, 0, VertexArray.numItems );