public void Draw()
{
if (vertices == null || triangles == null)
{
return;
}
//if (Material == null) return;
Gl.Disable(EnableCap.CullFace);
if (Material != null)
{
Material.Use();
}
Gl.BindBufferToShaderAttribute(vertices, Material.Program, "vertexPosition");
Gl.BindBufferToShaderAttribute(normals, Material.Program, "vertexNormal");
if (uvs != null)
{
Gl.BindBufferToShaderAttribute(uvs, Material.Program, "vertexUV");
}
Gl.BindBuffer(triangles);
Gl.DrawElements(BeginMode.Triangles, triangles.Count, DrawElementsType.UnsignedInt, IntPtr.Zero);
}
public GlVertexArray(GlProgram program, float[] positions, float[] colors)
{
if (program == null)
{
throw new ArgumentNullException(nameof(program));
}
// Allocate buffers referenced by this vertex array
_BufferPosition = new GlBuffer(positions);
_BufferColor = new GlBuffer(colors);
// Generate VAO name
ArrayName = Gl.GenVertexArray();
// First bind create the VAO
Gl.BindVertexArray(ArrayName);
// Set position attribute
// Select the buffer object
Gl.BindBuffer(BufferTarget.ArrayBuffer, _BufferPosition.BufferName);
// Format the vertex information: 2 floats from the current buffer
Gl.VertexAttribPointer((uint)program.LocationPosition, 3, VertexAttribType.Float, false, 0, IntPtr.Zero);
// Enable attribute
Gl.EnableVertexAttribArray((uint)program.LocationPosition);
// As above, but for color attribute
Gl.BindBuffer(BufferTarget.ArrayBuffer, _BufferColor.BufferName);
Gl.VertexAttribPointer((uint)program.LocationColor, 3, VertexAttribType.Float, false, 0, IntPtr.Zero);
Gl.EnableVertexAttribArray((uint)program.LocationColor);
}
/// <summary>
/// 保存した状態を復帰する。
/// </summary>
public void RestoreState()
{
Gl.UseProgram((uint)LastProgram);
SetEnabledVertexAttribArray(0, LastVertexAttribArrayEnabled[0] != 0);
SetEnabledVertexAttribArray(1, LastVertexAttribArrayEnabled[1] != 0);
SetEnabledVertexAttribArray(2, LastVertexAttribArrayEnabled[2] != 0);
SetEnabledVertexAttribArray(3, LastVertexAttribArrayEnabled[3] != 0);
SetEnabled(EnableCap.ScissorTest, LastScissorTest);
SetEnabled(EnableCap.StencilTest, LastStencilTest);
SetEnabled(EnableCap.DepthTest, LastDepthTest);
SetEnabled(EnableCap.CullFace, LastCullFace);
SetEnabled(EnableCap.Blend, LastBlend);
Gl.FrontFace((FrontFaceDirection)LastFrontFace);
Gl.ColorMask(LastColorMask[0] != 0, LastColorMask[1] != 0, LastColorMask[2] != 0, LastColorMask[3] != 0);
Gl.BindBuffer(BufferTarget.ArrayBuffer, (uint)LastArrayBufferBinding);
Gl.BindBuffer(BufferTarget.ElementArrayBuffer, (uint)LastElementArrayBufferBinding);
Gl.ActiveTexture(TextureUnit.Texture1);
Gl.BindTexture(TextureTarget.Texture2d, (uint)LastTexture1Binding2D);
Gl.ActiveTexture(TextureUnit.Texture0);
Gl.BindTexture(TextureTarget.Texture2d, (uint)LastTexture0Binding2D);
Gl.ActiveTexture((TextureUnit)LastActiveTexture);
Gl.BlendFuncSeparate((BlendingFactor)LastBlending[0], (BlendingFactor)LastBlending[1], (BlendingFactor)LastBlending[2], (BlendingFactor)LastBlending[3]);
RestoreViewport();
RestoreFrameBuffer();
}
private static void OnRenderFrame()
{
// set up the OpenGL viewport and clear both the color and depth bits
Gl.Viewport(0, 0, width, height);
Gl.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
// use our shader program
Gl.UseProgram(program);
// transform the triangle
program["model_matrix"].SetValue(Matrix4.CreateTranslation(new Vector3(-1.5f, 0, 0)));
// bind the vertex attribute arrays for the triangle (the hard way)
uint vertexPositionIndex = (uint)Gl.GetAttribLocation(program.ProgramID, "vertexPosition");
Gl.EnableVertexAttribArray(vertexPositionIndex);
Gl.BindBuffer(triangle);
Gl.VertexAttribPointer(vertexPositionIndex, triangle.Size, triangle.PointerType, true, 12, IntPtr.Zero);
Gl.BindBuffer(triangleElements);
// draw the triangle
Gl.DrawElements(BeginMode.Triangles, triangleElements.Count, DrawElementsType.UnsignedInt, IntPtr.Zero);
// transform the square
program["model_matrix"].SetValue(Matrix4.CreateTranslation(new Vector3(1.5f, 0, 0)));
// bind the vertex attribute arrays for the square (the easy way)
Gl.BindBufferToShaderAttribute(square, program, "vertexPosition");
Gl.BindBuffer(squareElements);
// draw the square
Gl.DrawElements(BeginMode.Quads, squareElements.Count, DrawElementsType.UnsignedInt, IntPtr.Zero);
Glut.glutSwapBuffers();
}
private void CreateTileIdVbo(Tile[] tempTiles)
{
//Generate an instanced vertex array to identify each draw call in the shader
float[] vDrawId = new float[numberOfTiles * numberOfVerticesPerTile];
// int[] vDrawId = new int[numberOfTiles*6];
// index = 0;
// foreach (Tile aTile in tempTiles)
// {
// vDrawId[index] = (int) aTile.TheTileId;
// index++;
// }
for (int i = 0; i < numberOfTiles * numberOfVerticesPerTile; i++)
{
Tile aTile = tempTiles[i / numberOfVerticesPerTile];
vDrawId[i] = (int)aTile.TheTileId;
}
gDrawIdBuffer = new VBO <float>(vDrawId, VertexAttribPointerType.Float, BufferTarget.ArrayBuffer,
BufferUsageHint.StaticDraw);
// gDrawIdBuffer = new VBO<int>(vDrawId, VertexAttribPointerType.Int, BufferTarget.ArrayBuffer,
// BufferUsageHint.StaticDraw);
Gl.BindBuffer(gDrawIdBuffer);
locationDrawid = (uint)Gl.GetAttribLocation(program.ProgramID, "drawTexId");
}
public void update(Chunk chunk)
{
if (vaoID_ == 0)
{
vaoID_ = Gl.GenVertexArray();
Gl.GenBuffers(vboID_);
}
Gl.ShadeModel(ShadingModel.Smooth);
Gl.BindVertexArray(vaoID_);
if (chunk.vertices.Count() > 0)
{
Gl.BindBuffer(BufferTarget.ArrayBuffer, vboID_[0]);
Gl.BufferData(BufferTarget.ArrayBuffer, (uint)chunk.vertices.Count() * sizeof(float) * 3, chunk.vertices.ToArray(), BufferUsage.DynamicDraw);
Gl.VertexAttribPointer(Shader.ATTRIB_VERTICES_POS, 3, VertexAttribType.Float, false, 0, IntPtr.Zero);
Gl.EnableVertexAttribArray(Shader.ATTRIB_VERTICES_POS);
}
if (chunk.triangles.Count() > 0)
{
Gl.BindBuffer(BufferTarget.ElementArrayBuffer, vboID_[1]);
Gl.BufferData(BufferTarget.ElementArrayBuffer, (uint)chunk.triangles.Count() * sizeof(int), chunk.triangles.ToArray(), BufferUsage.DynamicDraw);
current_fc = chunk.triangles.Count();
}
Gl.BindVertexArray(0);
Gl.BindBuffer(BufferTarget.ElementArrayBuffer, 0);
Gl.BindBuffer(BufferTarget.ArrayBuffer, 0);
}
// Initialize Opengl buffers
public void initialize()
{
shaderImage.it = new Shader(Shader.IMAGE_VERTEX_SHADER, Shader.IMAGE_FRAGMENT_SHADER);
texID = Gl.GetUniformLocation(shaderImage.it.getProgramId(), "texImage");
float[] g_quad_vertex_buffer_data = new float[18] {
-1.0f, -1.0f, 0.0f,
1.0f, -1.0f, 0.0f,
-1.0f, 1.0f, 0.0f,
-1.0f, 1.0f, 0.0f,
1.0f, -1.0f, 0.0f,
1.0f, 1, 0.0f
};
quad_vb = Gl.GenBuffer();
Gl.BindBuffer(BufferTarget.ArrayBuffer, quad_vb);
Gl.BufferData(BufferTarget.ArrayBuffer, (uint)(sizeof(float) * g_quad_vertex_buffer_data.Length), g_quad_vertex_buffer_data, BufferUsage.StaticDraw);
Gl.BindBuffer(BufferTarget.ArrayBuffer, 0);
Gl.Enable(EnableCap.Texture2d);
imageTex = Gl.GenTexture();
Gl.BindTexture(TextureTarget.Texture2d, imageTex);
Gl.TexParameter(TextureTarget.Texture2d, TextureParameterName.TextureWrapS, Gl.CLAMP_TO_BORDER);
Gl.TexParameter(TextureTarget.Texture2d, TextureParameterName.TextureWrapT, Gl.CLAMP_TO_BORDER);
Gl.TexParameter(TextureTarget.Texture2d, TextureParameterName.TextureWrapR, Gl.CLAMP_TO_BORDER);
Gl.TexParameter(TextureTarget.Texture2d, TextureParameterName.TextureMinFilter, Gl.LINEAR);
Gl.TexParameter(TextureTarget.Texture2d, TextureParameterName.TextureMagFilter, Gl.LINEAR);
Gl.TexImage2D(TextureTarget.Texture2d, 0, InternalFormat.Rgba, (int)resolution.width, (int)resolution.height, 0, PixelFormat.Rgba, PixelType.UnsignedByte, null);
Gl.BindTexture(TextureTarget.Texture2d, 0);
}
public void Draw(ShaderProgram aProgram)
{
if (vertices == null || triangles == null)
{
return;
}
Gl.Disable(EnableCap.CullFace);
if (Material != null)
{
Material.Use();
}
// Vector tempLoc = theObjectGame.Location;
aProgram.Use();
// if (theObjectGame.TheObjectId == ObjectGame.ObjcetIds.Player)
// {
// aProgram["model_matrix"].SetValue(Matrix4.CreateRotationY(-((ObjectPlayer)theObjectGame).Orientation.Angle)*
// Matrix4.CreateTranslation(new Vector3(tempLoc.X, 0, tempLoc.Y)));
//
// }
// else
// {
// aProgram["model_matrix"].SetValue(Matrix4.CreateTranslation(new Vector3(tempLoc.X, 0, tempLoc.Y)));
// }
Gl.BindBufferToShaderAttribute(vertices, Material.Program, "vertexPosition");
Gl.BindBufferToShaderAttribute(normals, Material.Program, "vertexNormal");
if (uvs != null)
{
Gl.BindBufferToShaderAttribute(uvs, Material.Program, "vertexUV");
}
Gl.BindBuffer(triangles);
Gl.DrawElements(BeginMode.Triangles, triangles.Count, DrawElementsType.UnsignedInt, IntPtr.Zero);
}
/// <summary>
/// Virtual Unbind implementation.
/// </summary>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/> used for binding.
/// </param>
protected virtual void UnbindCore(GraphicsContext ctx)
{
if (ctx.Extensions.VertexBufferObject_ARB)
{
Gl.BindBuffer(BufferType, InvalidObjectName);
}
}
private static void OnRenderFrame()
{
//Clock tick used for animation
watch.Stop();
float deltaTime = (float)watch.ElapsedTicks / System.Diagnostics.Stopwatch.Frequency;
watch.Restart();
Gl.Viewport(0, 0, width, height);
Gl.Clear(ClearBufferMask.ColorBufferBit
| ClearBufferMask.DepthBufferBit);
//Use shader
Gl.UseProgram(program);
//Drawing cube
#region
Gl.BindTexture(crateTexture);
program["model_matrix"].SetValue(Matrix4.CreateTranslation(new Vector3(0, 0, 0)));
Gl.BindBufferToShaderAttribute(cube, program, "vertexPosition");
Gl.BindBufferToShaderAttribute(cubeUV, program, "vertexUV");
Gl.BindBuffer(cubeElements);
//Dibuja el cube
Gl.DrawElements(BeginMode.Triangles, cubeElements.Count,
DrawElementsType.UnsignedInt, IntPtr.Zero);
#endregion
Glut.glutSwapBuffers();
}
private void UpdateBuffer(Texture texture)
{
if (texture is null)
{
return;
}
if (firstRender)
{
firstRender = false;
vao = Gl.CreateVertexArray();
Gl.BindVertexArray(vao);
Gl.BindBuffer(BufferTarget.ArrayBuffer, texture.baseVBO);
Gl.VertexAttribPointer(0, 2, VertexAttribType.Float, false, 4 * sizeof(float), (IntPtr)0);
Gl.VertexAttribPointer(1, 2, VertexAttribType.Float, false, 4 * sizeof(float), (IntPtr)(2 * sizeof(float)));
Gl.EnableVertexAttribArray(0);
Gl.EnableVertexAttribArray(1);
ibo = Gl.CreateBuffer();
Gl.BindBuffer(BufferTarget.ArrayBuffer, ibo);
Gl.VertexAttribPointer(2, 2, VertexAttribType.Float, false, 4 * sizeof(float), (IntPtr)0);
Gl.VertexAttribPointer(3, 2, VertexAttribType.Float, false, 4 * sizeof(float), (IntPtr)(2 * sizeof(float)));
Gl.EnableVertexAttribArray(2);
Gl.EnableVertexAttribArray(3);
Gl.VertexAttribDivisor(2, 1);
Gl.VertexAttribDivisor(3, 1);
}
Gl.BindBuffer(BufferTarget.ArrayBuffer, ibo);
Gl.BufferData(BufferTarget.ArrayBuffer, (uint)tilesBuffer.Length * sizeof(float), tilesBuffer, BufferUsage.DynamicDraw);
updateBuffer = false;
}
public static Geometry GenerateGeometry(GeometryData geometryData, float[] vertices, float[] normals, float[] texCoords, PrimitiveType primitiveType = PrimitiveType.Triangles)
{
if (vertices.Length % 3 != 0 || normals.Length % 3 != 0 || texCoords.Length % 2 != 0)
{
throw new ArgumentException($"Invalid count of input variables");
}
var geometry = new Geometry(geometryData, primitiveType);
geometry.m_VerticesCount = vertices.Length / 3;
geometry.VAO = Gl.GenVertexArray();
Gl.BindVertexArray(geometry.VAO);
geometry.m_VertexBuffer = Gl.GenBuffer();
Gl.BindBuffer(BufferTarget.ArrayBuffer, geometry.m_VertexBuffer);
Gl.BufferData(BufferTarget.ArrayBuffer, (uint)(sizeof(float) * vertices.Length), vertices, BufferUsage.StaticDraw);
Gl.VertexAttribPointer(POSITION_LOCATION, 3, VertexAttribType.Float, false, 0, IntPtr.Zero);
Gl.EnableVertexAttribArray(POSITION_LOCATION);
geometry.m_NormalBuffer = Gl.GenBuffer();
Gl.BindBuffer(BufferTarget.ArrayBuffer, geometry.m_NormalBuffer);
Gl.BufferData(BufferTarget.ArrayBuffer, (uint)(sizeof(float) * normals.Length), normals, BufferUsage.StaticDraw);
Gl.VertexAttribPointer(NORMAL_LOCATION, 3, VertexAttribType.Float, false, 0, IntPtr.Zero);
Gl.EnableVertexAttribArray(NORMAL_LOCATION);
geometry.m_TexCoordBuffer = Gl.GenBuffer();
Gl.BindBuffer(BufferTarget.ArrayBuffer, geometry.m_TexCoordBuffer);
Gl.BufferData(BufferTarget.ArrayBuffer, (uint)(sizeof(float) * texCoords.Length), texCoords, BufferUsage.StaticDraw);
Gl.VertexAttribPointer(TEX_COORD_LOCATION, 2, VertexAttribType.Float, false, 0, IntPtr.Zero);
Gl.EnableVertexAttribArray(TEX_COORD_LOCATION);
Gl.BindBuffer(BufferTarget.ArrayBuffer, 0);
return(geometry);
}
public override void StartDrawingModel(float[] model_color, Matrix mvp_matrix)
{
// コンテキストの状態を保存する
State.SaveState();
// 描画設定をする
Gl.FrontFace(FrontFaceDirection.Ccw);
Gl.Disable(EnableCap.ScissorTest);
Gl.Disable(EnableCap.StencilTest);
Gl.Disable(EnableCap.DepthTest);
Gl.Enable(EnableCap.Blend);
Gl.ColorMask(true, true, true, true);
// 不要なバッファがバインドされていたら解除する
Gl.BindBuffer(BufferTarget.ElementArrayBuffer, 0);
Gl.BindBuffer(BufferTarget.ArrayBuffer, 0);
// モデルのパラメータをコピーする
if ((model_color != null) && (model_color.Length == 4))
{
model_color.CopyTo(ModelColor, 0);
}
else
{
DefaultModelColor.CopyTo(ModelColor, 0);
}
MvpMatrix = (Matrix)mvp_matrix.Clone();
}
public override void Draw()
{
if (isTexture)
{
Gl.BindTexture(Data.curTexture);
}
Data.program["model_matrix"].SetValue(
Matrix4.CreateRotationY(Data.yangle) * Matrix4.CreateRotationX(Data.xangle) *
Matrix4.CreateTranslation(new Vector3(2.0f, 0, 0)));
Gl.BindBufferToShaderAttribute(vertexes, Data.program, "vertexPosition");
Gl.BindBufferToShaderAttribute(normals, Data.program, "vertexNormal");
Data.program["enable_texture"].SetValue(isTexture);
if (isTexture)
{
Gl.BindBufferToShaderAttribute(texture, Data.program, "vertexUV");
}
else
{
Gl.BindBufferToShaderAttribute(colors, Data.program, "vertexColor");
}
Gl.BindBuffer(indexes);
Gl.DrawElements(BeginMode.Quads, indexes.Count,
DrawElementsType.UnsignedInt, IntPtr.Zero);
}
protected void UpdateBuffer()
{
if (firstRender)
{
firstRender = false;
VAO = Gl.CreateVertexArray();
Gl.BindVertexArray(VAO);
Gl.BindBuffer(BufferTarget.ArrayBuffer, Texture.baseVBO);
Gl.VertexAttribPointer(0, 2, VertexAttribType.Float, false, 4 * sizeof(float), (IntPtr)0);
Gl.VertexAttribPointer(1, 2, VertexAttribType.Float, false, 4 * sizeof(float), (IntPtr)(2 * sizeof(float)));
Gl.EnableVertexAttribArray(0);
Gl.EnableVertexAttribArray(1);
ibo = Gl.CreateBuffer();
Gl.BindBuffer(BufferTarget.ArrayBuffer, ibo);
Gl.VertexAttribPointer(2, 2, VertexAttribType.Float, false, 4 * sizeof(float), (IntPtr)0);
Gl.VertexAttribPointer(3, 2, VertexAttribType.Float, false, 4 * sizeof(float), (IntPtr)(2 * sizeof(float)));
Gl.EnableVertexAttribArray(2);
Gl.EnableVertexAttribArray(3);
Gl.VertexAttribDivisor(2, 1);
Gl.VertexAttribDivisor(3, 1);
}
Gl.BindBuffer(BufferTarget.ArrayBuffer, ibo);
Gl.BufferData(BufferTarget.ArrayBuffer, (uint)bufferData.Length * sizeof(float), bufferData, BufferUsage.DynamicDraw);
updateBuffer = false;
}
public void BufferData()
{
Gl.BindVertexArray(arrayHandle);
if (used > 0 && dirty)
{
unsafe
{
fixed(int *p = data)
{
Gl.BindBuffer(BufferTarget.ArrayBuffer, bufferHandle);
// BufferSubData if we can
if (used <= lastUsed < used)
{
Gl.BufferSubData(BufferTarget.ArrayBuffer, (IntPtr)0, (uint)(used * vertexSize), (IntPtr)p);
}
else
{
Gl.BufferData(BufferTarget.ArrayBuffer, (uint)(used * vertexSize), (IntPtr)p, BufferUsage.StaticDraw);
lastUsed = used;
}
Gl.BindBuffer(BufferTarget.ArrayBuffer, 0);
}
}
dirty = false;
// Clear the data from memory as it is now stored on the GPU
data = null;
}
Gl.BindVertexArray(0);
}
/// <summary>
/// Virtual Unbind implementation.
/// </summary>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/> used for binding.
/// </param>
protected virtual void UnbindCore(GraphicsContext ctx)
{
if (ctx.Extensions.VertexBufferObject_ARB || ctx.Version.IsCompatible(Gl.Version_200_ES))
{
Gl.BindBuffer(Target, InvalidObjectName);
}
}
/// <summary>
/// Ensures the provided pointer is the currently bound data buffer of the provided type.
/// </summary>
/// <param name="pointer">The pointer to ensure is bound.</param>
/// <param name="type">The type of data buffer to ensure is bound.</param>
public static void EnsureBound(uint pointer, BufferTarget type)
{
// Check if it is already bound.
if (Bound[type] == pointer)
{
// If in debug mode, verify this with OpenGL.
if (!Engine.Configuration.GlDebugMode)
{
return;
}
bool foundBindingName = Enum.TryParse($"{type}Binding", true, out GetPName bindingName);
if (!foundBindingName)
{
Engine.Log.Warning($"Couldn't find binding name for data buffer of type {type}", MessageSource.GL);
}
Gl.GetInteger(bindingName, out int actualBound);
if (actualBound != pointer)
{
Engine.Log.Error($"Assumed bound data buffer of type {type} was {pointer} but it was {actualBound}.", MessageSource.GL);
}
return;
}
Gl.BindBuffer(type, pointer);
Bound[type] = pointer;
}
public void update(Vector4[] points)
{
if (vaoID_ == 0)
{
vaoID_ = Gl.GenVertexArray();
Gl.GenBuffers(vboID_);
}
Gl.ShadeModel(ShadingModel.Smooth);
index.Clear();
for (int c = 0; c < points.Count(); c++)
{
index.Add(c);
}
Gl.BindVertexArray(vaoID_);
if (points.Count() > 0)
{
Gl.BindBuffer(BufferTarget.ArrayBuffer, vboID_[0]);
Gl.BufferData(BufferTarget.ArrayBuffer, (uint)points.Count() * sizeof(float) * 4, points, BufferUsage.DynamicDraw);
Gl.VertexAttribPointer(Shader.ATTRIB_VERTICES_POS, 4, VertexAttribType.Float, false, 0, IntPtr.Zero);
Gl.EnableVertexAttribArray(Shader.ATTRIB_VERTICES_POS);
}
Gl.BindBuffer(BufferTarget.ElementArrayBuffer, vboID_[1]);
Gl.BufferData(BufferTarget.ElementArrayBuffer, (uint)index.Count() * sizeof(int), index.ToArray(), BufferUsage.DynamicDraw);
current_fc = index.Count();
Gl.BindVertexArray(0);
Gl.BindBuffer(BufferTarget.ElementArrayBuffer, 0);
Gl.BindBuffer(BufferTarget.ArrayBuffer, 0);
}
/// <inheritdoc />
public override bool BindIndexBuffer(uint bufferId)
{
#if DEBUG
uint actualBound = GetBoundIndexBuffer();
if (BoundIndexBuffer != 0 && BoundIndexBuffer != actualBound)
{
Engine.Log.Warning($"Bound index buffer was thought to be {BoundIndexBuffer} but is actually {actualBound}.", MessageSource.GL);
}
#endif
// Check if already bound.
if (BoundIndexBuffer != 0 && BoundIndexBuffer == bufferId)
{
return(false);
}
GLThread.ExecuteGLThread(() =>
{
Gl.BindBuffer(BufferTarget.ElementArrayBuffer, bufferId);
BoundIndexBuffer = bufferId;
CheckError("after binding index buffer");
});
return(true);
}
public void Draw(ShaderProgram aProgram)
{
if (vertices == null || triangles == null)
{
return;
}
Gl.Disable(EnableCap.CullFace);
if (Material != null)
{
Material.Use();
}
aProgram.Use();
aProgram["model_matrix"].SetValue(Matrix4.CreateTranslation(realPos));
// aProgram["model_matrix"].SetValue(Matrix4.CreateTranslation(new Vector3(Position.x, Position.y, 0)));
Gl.BindBufferToShaderAttribute(vertices, Material.Program, "vertexPosition");
Gl.BindBufferToShaderAttribute(normals, Material.Program, "vertexNormal");
if (uvs != null)
{
Gl.BindBufferToShaderAttribute(uvs, Material.Program, "vertexUV");
}
Gl.BindBuffer(triangles);
Gl.DrawElements(BeginMode.Triangles, triangles.Count, DrawElementsType.UnsignedInt, IntPtr.Zero);
}
public void TestGenBuffer()
{
if (!HasVersion(Gl.Version_150) && !HasExtension("GL_ARB_vertex_buffer_object") && !HasVersion(Gl.Version_100_ES) && !HasVersion(Gl.Version_200_ES))
{
Assert.Inconclusive("OpenGL 1.5 or GL_ARB_vertex_buffer_object not supported or OpenGL ES 1.0/2.0");
}
using (Device device = new Device())
using (new GLContext(device))
{
uint arrayBuffer = Gl.GenBuffer();
try {
Assert.AreNotEqual(0U, arrayBuffer, "Gl.GenBuffer failure");
// It seems that on my system glIsBuffer returns true after glGenBuffer... anyone can confirm
// Assert.IsFalse(Gl.IsBuffer(arrayBuffer));
Gl.BindBuffer(BufferTarget.ArrayBuffer, arrayBuffer);
Assert.IsTrue(Gl.IsBuffer(arrayBuffer));
} finally {
if (arrayBuffer != 0)
{
Gl.DeleteBuffers(arrayBuffer);
Assert.IsFalse(Gl.IsBuffer(arrayBuffer), "Gl.DeleteBuffers failure");
}
}
}
}
private void DrawBatch(Batch batch)
{
Gl.BindVertexArray(VAO);
Gl.BindBuffer(BufferTargetARB.ArrayBuffer, VBO);
Gl.BufferData(BufferTargetARB.ArrayBuffer, batch.VertexCount * (uint)VertexStride, batch.Vertices, BufferUsageARB.StreamDraw);
Gl.BindBuffer(BufferTargetARB.ElementArrayBuffer, EBO);
Gl.BufferData(BufferTargetARB.ElementArrayBuffer, batch.VertexCount * sizeof(int), batch.Indices, BufferUsageARB.StreamDraw);
// Vertex position
Gl.EnableVertexAttribArray(0);
Gl.VertexAttribPointer(0, 3, (int)VertexPointerType.Float, false, VertexStride, 0);
// Color
Gl.EnableVertexAttribArray(1);
Gl.VertexAttribPointer(1, 4, Gl.UNSIGNED_BYTE, true, VertexStride, Vector3.SizeInBytes);
// UV
Gl.EnableVertexAttribArray(2);
Gl.VertexAttribPointer(2, 2, (int)VertexPointerType.Float, false, VertexStride, Vector3.SizeInBytes + Color.SizeInBytes);
shader.Use();
Gl.BindTexture(batch.Texture.TextureTarget, batch.Texture.TextureID);
Gl.DrawArrays(PrimitiveType.Triangles, 0, (int)(batch.VertexCount / 3));
Gl.BindBuffer(BufferTargetARB.ArrayBuffer, 0);
Gl.BindBuffer(BufferTargetARB.ElementArrayBuffer, 0);
Gl.DisableVertexAttribArray(0);
Gl.DisableVertexAttribArray(1);
Gl.DisableVertexAttribArray(2);
Gl.BindVertexArray(0);
}
/// <summary>
/// This method is called by <code>Render</code>, directly before
/// <code>GL.drawElements</code>. It activates the program and sets up
/// the GL context with the following constants and attributes:
///
/// <code>uMvpMatrix</code> — MVP matrix
/// <code>aPosition</code> — vertex position (xy)
/// </summary>
protected virtual void BeforeDraw()
{
Program.Activate(); // create, upload, use program
//is this the best place for this?
Gl.BindBuffer(BufferTarget.ArrayBuffer, VertexBufferName);
Gl.BindBuffer(BufferTarget.ElementArrayBuffer, IndexBufferName);
uint attribPosition = (uint)Program.Attributes["aPosition"];
Gl.EnableVertexAttribArray(attribPosition);
Gl.VertexAttribPointer(attribPosition, 2, VertexAttribType.Float, false, Vertex.Size, (IntPtr)Vertex.PositionOffset);
int uMvpMatrix = Program.Uniforms["uMvpMatrix"];
Gl.UniformMatrix4(uMvpMatrix, false, MvpMatrix3D.RawData);
if (Texture != null)
{
uint aTexCoords = (uint)Program.Attributes["aTexCoords"];
Gl.EnableVertexAttribArray(aTexCoords);
Gl.VertexAttribPointer(aTexCoords, 2, VertexAttribType.Float, false, Vertex.Size, (IntPtr)Vertex.TextureOffset);
Gl.ActiveTexture(TextureUnit.Texture0);
RenderUtil.SetSamplerStateAt(Texture.Base, Texture.NumMipMaps > 0, TextureSmoothing, TextureRepeat);
}
// color & alpha are set in subclasses
}
public override void OnLoad()
{
GameCore.TheGameCore.TheGameEventHandler += TheGameCore_TheGameEventHandler;
theMap = TheGameStatus.TheMap;
// create our shader program
program = new ShaderProgram(VertexShader, FragmentShader);
// set up the projection and view matrix
program.Use();
projectionMatrix = Matrix4.CreatePerspectiveFieldOfView(TheRenderStatus.Fov, (float)Width / Height,
TheRenderStatus.ZNear,
TheRenderStatus.ZFar);
program["projection_matrix"].SetValue(projectionMatrix);
// program["model_matrix"].SetValue(Matrix4.Identity);
program["light_direction"].SetValue(theEnvironment.LightDirection);
program["enable_lighting"].SetValue(theEnvironment.Lighting);
program["ambient"].SetValue(theEnvironment.LightAmbient);
GenerateGeometry();
GenerateArrayTexture();
Gl.UseProgram(0);
Gl.BindBuffer(BufferTarget.ArrayBuffer, 0);
}
private static void RenderFrame()
{
stopWatch.Stop();
float pyramidDeltaTime = (float)stopWatch.ElapsedTicks / Stopwatch.Frequency * pyramidSpeed;
float cubeDeltaTime = (float)stopWatch.ElapsedTicks / Stopwatch.Frequency * cubeSpeed;
stopWatch.Restart();
pyramidAngle += pyramidDeltaTime;
cubeAngle += cubeDeltaTime;
Gl.Viewport(0, 0, width, height);
Gl.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
Gl.UseProgram(ShaderProgram);
ShaderProgram["model_matrix"].SetValue(Matrix4.CreateRotationY(pyramidAngle * pyramidRodationSide) * Matrix4.CreateTranslation(new Vector3(-1.5f, 0, 0)));
Gl.BindBufferToShaderAttribute(pyramid, ShaderProgram, "vertexPosition");
Gl.BindBufferToShaderAttribute(pyramidColor, ShaderProgram, "vertexColor");
Gl.BindBuffer(pyramidTriangles);
Gl.DrawElements(BeginMode.Triangles, pyramidTriangles.Count, DrawElementsType.UnsignedInt, IntPtr.Zero);
ShaderProgram["model_matrix"].SetValue(Matrix4.CreateRotationY((cubeAngle / 2) * cubeRotationSide) * Matrix4.CreateRotationX(cubeAngle * cubeRotationSide) * Matrix4.CreateTranslation(new Vector3(1.5f, 0, 0)));
Gl.BindBufferToShaderAttribute(cube, ShaderProgram, "vertexPosition");
Gl.BindBufferToShaderAttribute(cubeColor, ShaderProgram, "vertexColor");
Gl.BindBuffer(cubeQuads);
Gl.DrawElements(BeginMode.Quads, cubeQuads.Count, DrawElementsType.UnsignedInt, IntPtr.Zero);
Glut.glutSwapBuffers();
}
public void TestGenBuffer()
{
if (!HasVersion(1, 5) && !IsGlExtensionSupported("GL_ARB_vertex_buffer_object") && !HasEsVersion(1, 0))
{
Assert.Inconclusive("OpenGL 1.5 or GL_ARB_vertex_buffer_object not supported or OpenGL ES 1.0");
}
uint arrayBuffer = Gl.GenBuffer();
try {
Assert.AreNotEqual(0U, arrayBuffer, "Gl.GenBuffer failure");
// It seems that on my system glIsBuffer returns true after glGenBuffer... anyone can confirm
// Assert.IsFalse(Gl.IsBuffer(arrayBuffer));
Gl.BindBuffer(BufferTarget.ArrayBuffer, arrayBuffer);
Assert.IsTrue(Gl.IsBuffer(arrayBuffer));
} finally {
if (arrayBuffer != 0)
{
Gl.DeleteBuffers(arrayBuffer);
Assert.IsFalse(Gl.IsBuffer(arrayBuffer), "Gl.DeleteBuffers failure");
}
}
}
private static void OnRenderFrame()
{
// calculate how much time has elapsed since the last frame
watch.Stop();
float deltaTime = (float)watch.ElapsedTicks / System.Diagnostics.Stopwatch.Frequency;
watch.Restart();
// use the deltaTime to adjust the angle of the cube
angle += deltaTime;
// set up the OpenGL viewport and clear both the color and depth bits
Gl.Viewport(0, 0, width, height);
Gl.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
// use our shader program and bind the crate texture
Gl.UseProgram(program);
Gl.BindTexture(crateTexture);
// set the transformation of the cube
program["model_matrix"].SetValue(Matrix4.CreateRotationY(angle / 2) * Matrix4.CreateRotationX(angle));
// bind the vertex positions, UV coordinates and element array
Gl.BindBufferToShaderAttribute(cube, program, "vertexPosition");
Gl.BindBufferToShaderAttribute(cubeUV, program, "vertexUV");
Gl.BindBuffer(cubeQuads);
// draw the textured cube
Gl.DrawElements(BeginMode.Quads, cubeQuads.Count, DrawElementsType.UnsignedInt, IntPtr.Zero);
Glut.glutSwapBuffers();
}
private static void OnRenderFrame()
{
// set up the OpenGL viewport and clear both the color and depth bits
Gl.Viewport(0, 0, width, height);
Gl.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
// use our shader program
Gl.UseProgram(program);
// bind the vertex positions, colors and elements of the triangle
program["model_matrix"].SetValue(Matrix4.CreateTranslation(new Vector3(-1.5f, 0, 0)));
Gl.BindBufferToShaderAttribute(triangle, program, "vertexPosition");
Gl.BindBufferToShaderAttribute(triangleColor, program, "vertexColor");
Gl.BindBuffer(triangleElements);
// draw the triangle
Gl.DrawElements(BeginMode.Triangles, triangleElements.Count, DrawElementsType.UnsignedInt, IntPtr.Zero);
// bind the vertex positions, colors and elements of the square
program["model_matrix"].SetValue(Matrix4.CreateTranslation(new Vector3(1.5f, 0, 0)));
Gl.BindBufferToShaderAttribute(square, program, "vertexPosition");
Gl.BindBufferToShaderAttribute(squareColor, program, "vertexColor");
Gl.BindBuffer(squareElements);
// draw the square
Gl.DrawElements(BeginMode.Quads, squareElements.Count, DrawElementsType.UnsignedInt, IntPtr.Zero);
Glut.glutSwapBuffers();
}
public OpenGLIndexBuffer(object indices, uint count)
{
this.count = count;
bufferID = Gl.CreateBuffer();
Gl.BindBuffer(BufferTarget.ElementArrayBuffer, bufferID);
Gl.BufferData(BufferTarget.ElementArrayBuffer, count * sizeof(uint), indices, BufferUsage.StaticDraw);
}