// Draw the imgui triangle data
void DrawTriangles(uint count, ImVector <ushort> idxBuffer, ImPtrVector <ImDrawVertPtr> idxVert, int idxOffset, int vtxOffset, IntPtr textureId)
{
uint texId = (uint)textureId;
ushort index;
ImDrawVertPtr vertex;
if (Rlgl.rlCheckBufferLimit((int)count * 3))
{
Rlgl.rlglDraw();
}
Rlgl.rlPushMatrix();
Rlgl.rlBegin(Rlgl.RL_TRIANGLES);
Rlgl.rlEnableTexture(texId);
for (int i = 0; i <= (count - 3); i += 3)
{
index = idxBuffer[idxOffset + i];
vertex = idxVert[vtxOffset + index];
DrawTriangleVertex(vertex);
index = idxBuffer[idxOffset + i + 2];
vertex = idxVert[vtxOffset + index];
DrawTriangleVertex(vertex);
index = idxBuffer[idxOffset + i + 1];
vertex = idxVert[vtxOffset + index];
DrawTriangleVertex(vertex);
}
Rlgl.rlDisableTexture();
Rlgl.rlEnd();
Rlgl.rlPopMatrix();
}
void DrawTriangleVertex(ImDrawVertPtr idxVert)
{
Color c = GetColor(idxVert.col);
Rlgl.rlColor4ub(c.r, c.g, c.b, c.a);
Rlgl.rlTexCoord2f(idxVert.uv.X, idxVert.uv.Y);
Rlgl.rlVertex2f(idxVert.pos.X, idxVert.pos.Y);
}
unsafe void RenderCommandLists(ImDrawDataPtr drawData)
{
// Scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
int fbWidth = (int)(drawData.DisplaySize.X * drawData.FramebufferScale.X);
int fbHeight = (int)(drawData.DisplaySize.Y * drawData.FramebufferScale.Y);
// Avoid rendering if display is minimized or if the command list is empty
if (fbWidth <= 0 || fbHeight <= 0 || drawData.CmdListsCount == 0)
{
return;
}
drawData.ScaleClipRects(ImGui.GetIO().DisplayFramebufferScale);
Rlgl.rlDisableBackfaceCulling();
for (int n = 0; n < drawData.CmdListsCount; n++)
{
ImDrawListPtr cmdList = drawData.CmdListsRange[n];
// Vertex buffer and index buffer generated by Dear ImGui
ImPtrVector <ImDrawVertPtr> vtxBuffer = cmdList.VtxBuffer;
ImVector <ushort> idxBuffer = cmdList.IdxBuffer;
for (int cmdi = 0; cmdi < cmdList.CmdBuffer.Size; cmdi++)
{
ImDrawCmdPtr pcmd = cmdList.CmdBuffer[cmdi];
if (pcmd.UserCallback != IntPtr.Zero)
{
// pcmd.UserCallback(cmdList, pcmd);
}
else
{
Vector2 pos = drawData.DisplayPos;
int rectX = (int)((pcmd.ClipRect.X - pos.X) * drawData.FramebufferScale.X);
int rectY = (int)((pcmd.ClipRect.Y - pos.Y) * drawData.FramebufferScale.Y);
int rectW = (int)((pcmd.ClipRect.Z - rectX) * drawData.FramebufferScale.X);
int rectH = (int)((pcmd.ClipRect.W - rectY) * drawData.FramebufferScale.Y);
if (rectX < fbWidth && rectY < fbHeight && rectW >= 0.0f && rectH >= 0.0f)
{
Raylib.BeginScissorMode(rectX, rectY, rectW, rectH);
DrawTriangles(pcmd.ElemCount, idxBuffer, vtxBuffer, (int)pcmd.IdxOffset, (int)pcmd.VtxOffset, pcmd.TextureId);
}
}
}
}
Raylib.EndScissorMode();
Rlgl.rlEnableBackfaceCulling();
}
public void Update()
{
drawScreen.Update();
Raylib.BeginDrawing();
Raylib.BeginTextureMode(renderTexture);
Raylib.ClearBackground(Color.BLACK);
Raylib.BeginMode3D(camera);
ModelRenderer.RenderQueue();
Raylib.EndMode3D();
Raylib.EndTextureMode();
Raylib.ClearBackground(Color.BLACK);
//Console.WriteLine(renderTexture.depth.id);
Raylib.BeginShaderMode(postProcessShader);
Raylib.SetShaderValueTexture(postProcessShader, Raylib.GetShaderLocation(postProcessShader, "depthTexture"), renderTexture.depth);
unsafe
{
Vector4 screenDims = new Vector4(screenWidth, screenHeight, windowWidth, windowHeight);
IntPtr pointer = new IntPtr(&screenDims);
Raylib.SetShaderValue(
postProcessShader,
Raylib.GetShaderLocation(postProcessShader, "screenSize"),
pointer,
ShaderUniformDataType.SHADER_UNIFORM_VEC4
);
}
Raylib.DrawTexturePro(
renderTexture.texture,
new Rectangle(0, 0, renderTexture.texture.width, -renderTexture.texture.height),
new Rectangle(0, 0, windowWidth, windowHeight),
Vector2.Zero,
0,
Color.WHITE
);
Raylib.EndShaderMode();
drawScreen.Render();
Rlgl.rlDrawRenderBatchActive();
Raylib.EndDrawing();
Debug.Label("swap window");
}
public static RenderTexture2D LoadRenderTexture(int width, int height)
{
RenderTexture2D target = new RenderTexture2D();
target.id = Rlgl.rlLoadFramebuffer(width, height); // Load an empty framebuffer
if (target.id > 0)
{
Rlgl.rlEnableFramebuffer(target.id);
// Create color texture (default to RGBA)
target.texture.id = Rlgl.rlLoadTexture(IntPtr.Zero, width, height, PixelFormat.PIXELFORMAT_UNCOMPRESSED_R8G8B8A8, 1);
target.texture.width = width;
target.texture.height = height;
target.texture.format = PixelFormat.PIXELFORMAT_UNCOMPRESSED_R8G8B8A8;
target.texture.mipmaps = 1;
// Create depth renderbuffer/texture
target.depth.id = Rlgl.rlLoadTextureDepth(width, height, false);
target.depth.width = width;
target.depth.height = height;
target.depth.format = (PixelFormat)19; //DEPTH_COMPONENT_24BIT?
target.depth.mipmaps = 1;
// Attach color texture and depth renderbuffer/texture to FBO
Rlgl.rlFramebufferAttach(target.id, target.texture.id, FramebufferAttachType.RL_ATTACHMENT_COLOR_CHANNEL0, FramebufferAttachTextureType.RL_ATTACHMENT_TEXTURE2D, 0);
Rlgl.rlFramebufferAttach(target.id, target.depth.id, FramebufferAttachType.RL_ATTACHMENT_DEPTH, FramebufferAttachTextureType.RL_ATTACHMENT_TEXTURE2D, 0);
// Check if fbo is complete with attachments (valid)
//if (Rlgl.rlFramebufferComplete(target.id)) TRACELOG(LOG_INFO, "FBO: [ID %i] Framebuffer object created successfully", target.id);
Rlgl.rlDisableFramebuffer();
}
//else TRACELOG(LOG_WARNING, "FBO: Framebuffer object can not be created");
return(target);
}
