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Vulkan: Avoid passing negative coordinates to vkCmdSetScissor, which debug validation layers do not like.

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This commit is contained in:
omar 2019-04-04 22:09:12 +02:00
parent fc52364652
commit 1c3311e4d6
2 changed files with 8 additions and 0 deletions
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1
docs/CHANGELOG.txt
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@ -48,6 +48,7 @@ Other Changes:
GL function loaders early, and help users understand what they are missing. (#2421)
- Examples: OpenGL3: Minor tweaks + not calling glBindBuffer more than necessary in the render loop.
- Examples: Vulkan: Added missing support for 32-bit indices (#define ImDrawIdx unsigned int).
- Examples: Vulkan: Avoid passing negative coordinates to vkCmdSetScissor, which debug validation layers do not like.
- Examples: DirectX9: Fixed erroneous assert in ImGui_ImplDX9_InvalidateDeviceObjects(). (#2454)
- Examples: GLUT: Fixed existing FreeGLUT example to work with regular GLUT. (#2465) [@andrewwillmott]
- Examples: GLUT: Renamed imgui_impl_freeglut.cpp/.h to imgui_impl_glut.cpp/.h. (#2465) [@andrewwillmott]

7
examples/imgui_impl_vulkan.cpp
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@ -13,6 +13,7 @@
// CHANGELOG
// (minor and older changes stripped away, please see git history for details)
// 2019-04-04: Vulkan: Avoid passing negative coordinates to vkCmdSetScissor, which debug validation layers do not like.
// 2019-04-01: Vulkan: Support for 32-bit index buffer (#define ImDrawIdx unsigned int).
// 2019-02-16: Vulkan: Viewport and clipping rectangles correctly using draw_data->FramebufferScale to allow retina display.
// 2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
@ -347,6 +348,12 @@ void ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer comm
if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0f && clip_rect.w >= 0.0f)
{
// Negative offsets are illegal for vkCmdSetScissor
if (clip_rect.x < 0.0f)
clip_rect.x = 0.0f;
if (clip_rect.y < 0.0f)
clip_rect.y = 0.0f;
// Apply scissor/clipping rectangle
VkRect2D scissor;
scissor.offset.x = (int32_t)(clip_rect.x);