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ImDrawData: Added FramebufferScale field (currently a copy of the value from io.DisplayFramebufferScale).

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This is to allow render functions being written without pulling any data from ImGuiIO, allowing incoming multi-viewport feature to behave on Retina display and with multiple displays. If you are not using a custom binding, please update your render function code ahead of time, and use draw_data->FramebufferScale instead of io.DisplayFramebufferScale. (#2306, #1676)
Examples: Metal, OpenGL2, OpenGL3: Fixed offsetting of clipping rectangle with ImDrawData::DisplayPos != (0,0) when the display frame-buffer scale scale is not (1,1). While this doesn't make a difference when using master branch, this is effectively fixing support for multi-viewport with Mac Retina Displays on those examples. (#2306) Also using ImDrawData::FramebufferScale instead of io.DisplayFramebufferScale.
Examples: Clarified the use the ImDrawData::DisplayPos to offset clipping rectangles.
This commit is contained in:
omar
2019-02-11 18:38:07 +01:00
parent ef7940699e
commit a79785c0b9
15 changed files with 87 additions and 47 deletions
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7
examples/example_apple_opengl2/main.mm
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@ -92,13 +92,14 @@
[[self openGLContext] makeCurrentContext];
ImGuiIO& io = ImGui::GetIO();
GLsizei width = (GLsizei)(io.DisplaySize.x * io.DisplayFramebufferScale.x);
GLsizei height = (GLsizei)(io.DisplaySize.y * io.DisplayFramebufferScale.y);
ImDrawData* draw_data = ImGui::GetDrawData();
GLsizei width = (GLsizei)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x);
GLsizei height = (GLsizei)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y);
glViewport(0, 0, width, height);
glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
glClear(GL_COLOR_BUFFER_BIT);
ImGui_ImplOpenGL2_RenderDrawData(ImGui::GetDrawData());
ImGui_ImplOpenGL2_RenderDrawData(draw_data);
// Present
[[self openGLContext] flushBuffer];