diff --git a/examples/opengl3_example/imgui_impl_glfw_gl3.cpp b/examples/opengl3_example/imgui_impl_glfw_gl3.cpp index 4c91961d..1cf35c65 100644 --- a/examples/opengl3_example/imgui_impl_glfw_gl3.cpp +++ b/examples/opengl3_example/imgui_impl_glfw_gl3.cpp @@ -31,8 +31,8 @@ static int g_AttribLocationPosition = 0, g_AttribLocationUV = 0, g_Attr static unsigned int g_VboHandle = 0, g_VaoHandle = 0, g_ElementsHandle = 0; // This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure) -// If text or lines are blurry when integrating ImGui in your engine: -// - in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f) +// Note that this implementation is little overcomplicated because we are saving/setting up/restoring every OpenGL state explicitly, in order to be able to run within any OpenGL engine that doesn't do so. +// If text or lines are blurry when integrating ImGui in your engine: in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f) void ImGui_ImplGlfwGL3_RenderDrawLists(ImDrawData* draw_data) { // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates) @@ -48,6 +48,7 @@ void ImGui_ImplGlfwGL3_RenderDrawLists(ImDrawData* draw_data) glActiveTexture(GL_TEXTURE0); GLint last_program; glGetIntegerv(GL_CURRENT_PROGRAM, &last_program); GLint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture); + GLint last_sampler; glGetIntegerv(GL_SAMPLER_BINDING, &last_sampler); 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); @@ -87,6 +88,7 @@ void ImGui_ImplGlfwGL3_RenderDrawLists(ImDrawData* draw_data) glUniform1i(g_AttribLocationTex, 0); glUniformMatrix4fv(g_AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]); glBindVertexArray(g_VaoHandle); + glBindSampler(0, 0); // Rely on combined texture/sampler state. for (int n = 0; n < draw_data->CmdListsCount; n++) { @@ -119,6 +121,7 @@ void ImGui_ImplGlfwGL3_RenderDrawLists(ImDrawData* draw_data) // Restore modified GL state glUseProgram(last_program); glBindTexture(GL_TEXTURE_2D, last_texture); + glBindSampler(0, last_sampler); glActiveTexture(last_active_texture); glBindVertexArray(last_vertex_array); glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer); diff --git a/examples/sdl_opengl3_example/imgui_impl_sdl_gl3.cpp b/examples/sdl_opengl3_example/imgui_impl_sdl_gl3.cpp index 1829ac95..0301d31b 100644 --- a/examples/sdl_opengl3_example/imgui_impl_sdl_gl3.cpp +++ b/examples/sdl_opengl3_example/imgui_impl_sdl_gl3.cpp @@ -25,8 +25,8 @@ static int g_AttribLocationPosition = 0, g_AttribLocationUV = 0, g_Attr static unsigned int g_VboHandle = 0, g_VaoHandle = 0, g_ElementsHandle = 0; // This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure) -// If text or lines are blurry when integrating ImGui in your engine: -// - in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f) +// Note that this implementation is little overcomplicated because we are saving/setting up/restoring every OpenGL state explicitly, in order to be able to run within any OpenGL engine that doesn't do so. +// If text or lines are blurry when integrating ImGui in your engine: in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f) void ImGui_ImplSdlGL3_RenderDrawLists(ImDrawData* draw_data) { // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates) @@ -42,6 +42,7 @@ void ImGui_ImplSdlGL3_RenderDrawLists(ImDrawData* draw_data) glActiveTexture(GL_TEXTURE0); GLint last_program; glGetIntegerv(GL_CURRENT_PROGRAM, &last_program); GLint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture); + GLint last_sampler; glGetIntegerv(GL_SAMPLER_BINDING, &last_sampler); 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); @@ -81,6 +82,7 @@ void ImGui_ImplSdlGL3_RenderDrawLists(ImDrawData* draw_data) glUniform1i(g_AttribLocationTex, 0); glUniformMatrix4fv(g_AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]); glBindVertexArray(g_VaoHandle); + glBindSampler(0, 0); // Rely on combined texture/sampler state. for (int n = 0; n < draw_data->CmdListsCount; n++) { @@ -113,6 +115,7 @@ void ImGui_ImplSdlGL3_RenderDrawLists(ImDrawData* draw_data) // Restore modified GL state glUseProgram(last_program); glBindTexture(GL_TEXTURE_2D, last_texture); + glBindSampler(0, last_sampler); glActiveTexture(last_active_texture); glBindVertexArray(last_vertex_array); glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer);