From 5d967f8e8c822565cb755ef95446cf7daf2b0b63 Mon Sep 17 00:00:00 2001 From: Emil Lenngren Date: Thu, 31 Mar 2022 02:30:48 +0200 Subject: [PATCH] Don't crash if glClipControl is not available --- libultraship/libultraship/Lib/Fast3D/gfx_opengl.cpp | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/libultraship/libultraship/Lib/Fast3D/gfx_opengl.cpp b/libultraship/libultraship/Lib/Fast3D/gfx_opengl.cpp index 52815bc1c..16e750d14 100644 --- a/libultraship/libultraship/Lib/Fast3D/gfx_opengl.cpp +++ b/libultraship/libultraship/Lib/Fast3D/gfx_opengl.cpp @@ -673,7 +673,11 @@ static void gfx_opengl_resize_framebuffer(int fb, uint32_t width, uint32_t heigh void gfx_opengl_set_framebuffer(int fb) { - glClipControl(GL_UPPER_LEFT, GL_NEGATIVE_ONE_TO_ONE); // Set origin to upper left corner, to match N64 and DX11 + if (GLEW_ARB_clip_control || GLEW_VERSION_4_5) { + // Set origin to upper left corner, to match N64 and DX11 + // If this function is not supported, the texture will be upside down :( + glClipControl(GL_UPPER_LEFT, GL_NEGATIVE_ONE_TO_ONE); + } glBindFramebuffer(GL_FRAMEBUFFER_EXT, fb); glDepthMask(GL_TRUE); @@ -687,7 +691,9 @@ void gfx_opengl_reset_framebuffer(void) glBindFramebuffer(GL_FRAMEBUFFER, 0); glBindFramebuffer(GL_FRAMEBUFFER_EXT, framebuffer); - glClipControl(GL_LOWER_LEFT, GL_NEGATIVE_ONE_TO_ONE); + if (GLEW_ARB_clip_control || GLEW_VERSION_4_5) { + glClipControl(GL_LOWER_LEFT, GL_NEGATIVE_ONE_TO_ONE); + } } void gfx_opengl_select_texture_fb(int fbID)