cmake_uninstall.cmake.in
author Sam Lantinga <slouken@libsdl.org>
Wed, 18 Oct 2017 08:52:04 -0700
changeset 11630 ad4b5d85edee
parent 11605 b914622c734e
permissions -rw-r--r--
Fixed bug 3821 - Allow SDL_CreateWindow and SDL_CreateRenderer with OpenGL ES 3.0 (GLES3) for Angle (Windows)

Carlos

Angle supports GLES3 but when using these functions (SDL_CreateWindow and SDL_CreateRenderer), defaults again to GLES2.0.

A current workaround (hack) to retrieve a GLES3.0 context with Angle is:

1) set

SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);

after InitSDL AND after calling SDL_CreateWindow (before SDL_CreateRenderer)

2) Comment lines 2032-2044 in SDL_render_gles2.c, funtion GLES2_CreateRenderer

window_flags = SDL_GetWindowFlags(window);
if (!(window_flags & SDL_WINDOW_OPENGL) ||
profile_mask != SDL_GL_CONTEXT_PROFILE_ES || major != RENDERER_CONTEXT_MAJOR || minor != RENDERER_CONTEXT_MINOR) {

changed_window = SDL_TRUE;
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_ES);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, RENDERER_CONTEXT_MAJOR);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, RENDERER_CONTEXT_MINOR);

if (SDL_RecreateWindow(window, window_flags | SDL_WINDOW_OPENGL) < 0) {
goto error;
}
}

This retrives a GLES3 context as confirmed using glGetString(GL_VERSION). This should be fixed by modifying a few if's.
     1 if (NOT EXISTS "@CMAKE_BINARY_DIR@/install_manifest.txt")
     2     message(FATAL_ERROR "Cannot find install manifest: \"@CMAKE_BINARY_DIR@/install_manifest.txt\"")
     3 endif(NOT EXISTS "@CMAKE_BINARY_DIR@/install_manifest.txt")
     4 
     5 file(READ "@CMAKE_BINARY_DIR@/install_manifest.txt" files)
     6 string(REGEX REPLACE "\n" ";" files "${files}")
     7 foreach (file ${files})
     8     message(STATUS "Uninstalling \"$ENV{DESTDIR}${file}\"")
     9     execute_process(
    10         COMMAND @CMAKE_COMMAND@ -E remove "$ENV{DESTDIR}${file}"
    11         OUTPUT_VARIABLE rm_out
    12         RESULT_VARIABLE rm_retval
    13     )
    14     if(NOT ${rm_retval} EQUAL 0)
    15         message(FATAL_ERROR "Problem when removing \"$ENV{DESTDIR}${file}\"")
    16     endif (NOT ${rm_retval} EQUAL 0)
    17 endforeach(file)
    18