From 01286f6636021f0b7d1e9102b098a61439b89ada Mon Sep 17 00:00:00 2001 From: Gregg Tavares Date: Mon, 1 May 2017 16:05:45 +0900 Subject: [PATCH] Fix blend func state save/restore AFAIK there's no such enum as `GL_BLEND_SRC` or `GL_BLEND_DST` in OpenGL3 and OpenGL4. Maybe they're left over from previous versions? They don't even seem to exist in OpenGL 2.1. In fact checking they were deprecated in OpenGL 1.5 (they exist in 1.3) --- examples/opengl3_example/imgui_impl_glfw_gl3.cpp | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/examples/opengl3_example/imgui_impl_glfw_gl3.cpp b/examples/opengl3_example/imgui_impl_glfw_gl3.cpp index 194a291f..dd02d8b1 100644 --- a/examples/opengl3_example/imgui_impl_glfw_gl3.cpp +++ b/examples/opengl3_example/imgui_impl_glfw_gl3.cpp @@ -51,12 +51,14 @@ void ImGui_ImplGlfwGL3_RenderDrawLists(ImDrawData* draw_data) GLint last_array_buffer; glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer); GLint last_element_array_buffer; glGetIntegerv(GL_ELEMENT_ARRAY_BUFFER_BINDING, &last_element_array_buffer); GLint last_vertex_array; glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array); - GLint last_blend_src; glGetIntegerv(GL_BLEND_SRC, &last_blend_src); - GLint last_blend_dst; glGetIntegerv(GL_BLEND_DST, &last_blend_dst); + GLint last_blend_src_rgb; glGetIntegerv(GL_BLEND_SRC_RGB, &last_blend_src_rgb); + GLint last_blend_dst_rgb; glGetIntegerv(GL_BLEND_DST_RGB, &last_blend_dst_rgb); + GLint last_blend_src_alpha; glGetIntegerv(GL_BLEND_SRC_ALPHA, &last_blend_src_alpha); + GLint last_blend_dst_alpha; glGetIntegerv(GL_BLEND_DST_ALPHA, &last_blend_dst_alpha); GLint last_blend_equation_rgb; glGetIntegerv(GL_BLEND_EQUATION_RGB, &last_blend_equation_rgb); GLint last_blend_equation_alpha; glGetIntegerv(GL_BLEND_EQUATION_ALPHA, &last_blend_equation_alpha); GLint last_viewport[4]; glGetIntegerv(GL_VIEWPORT, last_viewport); - GLint last_scissor_box[4]; glGetIntegerv(GL_SCISSOR_BOX, last_scissor_box); + GLint last_scissor_box[4]; glGetIntegerv(GL_SCISSOR_BOX, last_scissor_box); GLboolean last_enable_blend = glIsEnabled(GL_BLEND); GLboolean last_enable_cull_face = glIsEnabled(GL_CULL_FACE); GLboolean last_enable_depth_test = glIsEnabled(GL_DEPTH_TEST); @@ -120,7 +122,7 @@ void ImGui_ImplGlfwGL3_RenderDrawLists(ImDrawData* draw_data) glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, last_element_array_buffer); glBlendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha); - glBlendFunc(last_blend_src, last_blend_dst); + glBlendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha); if (last_enable_blend) glEnable(GL_BLEND); else glDisable(GL_BLEND); if (last_enable_cull_face) glEnable(GL_CULL_FACE); else glDisable(GL_CULL_FACE); if (last_enable_depth_test) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST);