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Backends: OpenGL3: reset GL_POLYGON_MODE separately for front and back when possible. (#6333)

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Gereon V 2023-04-14 22:49:50 +02:00 committed by ocornut
parent d6a7aca2f4
commit d0836aa89a
1 changed files with 17 additions and 1 deletions
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18
backends/imgui_impl_opengl3.cpp
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@ -613,8 +613,24 @@ void ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
#endif
#ifdef IMGUI_IMPL_HAS_POLYGON_MODE
glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
// Desktop OpenGL 3.0 and OpenGL 3.1 had separate polygon draw modes for front-facing and back-facing faces of polygons
#if defined(GL_FRONT) && defined(GL_BACK) // possibly Desktop OpenGL 3.0, 3.1 or 3.2+ compatibility profile
#ifdef GL_CONTEXT_PROFILE_MASK // Desktop OpenGL 3.2+
GLint profile_mask;
glGetIntegerv(GL_CONTEXT_PROFILE_MASK, &profile_mask);
if (profile_mask & GL_CONTEXT_COMPATIBILITY_PROFILE_BIT)
#else
if (bd->GlVersion <= 310)
#endif
{
glPolygonMode(GL_FRONT, (GLenum)last_polygon_mode[0]);
glPolygonMode(GL_BACK, (GLenum)last_polygon_mode[1]);
}
else
#endif // GL_FRONT & GL_BACK
glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]);
#endif // IMGUI_IMPL_HAS_POLYGON_MODE
glViewport(last_viewport[0], last_viewport[1], (GLsizei)last_viewport[2], (GLsizei)last_viewport[3]);
glScissor(last_scissor_box[0], last_scissor_box[1], (GLsizei)last_scissor_box[2], (GLsizei)last_scissor_box[3]);
(void)bd; // Not all compilation paths use this