Unify GLES1 and GLES2 (libraries are compatible and can be co-linked)
git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@1687 7f0cb862-5218-0410-a997-914c9d46530a
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@ -15,9 +15,8 @@ freeglut/freeglut/README.mac -text
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freeglut/freeglut/README.mingw_cross svn_keywords=Author+Date+Id+Revision
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freeglut/freeglut/README.win32 svn_keywords=Author+Date+Id+Revision
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freeglut/freeglut/TODO svn_keywords=Author+Date+Id+Revision
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freeglut/freeglut/android/Android.mk -text
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freeglut/freeglut/android/README -text
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freeglut/freeglut/android/gles1/Android.mk -text
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freeglut/freeglut/android/gles2/Android.mk -text
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freeglut/freeglut/android_toolchain.cmake -text
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freeglut/freeglut/config.h.in svn_keywords=Author+Date+Id+Revision
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freeglut/freeglut/doc/download.html svn_keywords=Author+Date+Id+Revision
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@ -40,9 +40,7 @@ ELSE()
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ENDIF()
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# OpenGL ES support
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OPTION(FREEGLUT_GLES1 "Use OpenGL ES 1.x (requires EGL)" OFF)
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OPTION(FREEGLUT_GLES2 "Use OpenGL ES 2.x (requires EGL) (overrides BUILD_GLES1)" OFF)
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OPTION(FREEGLUT_GLES "Use OpenGL ES (requires EGL)" OFF)
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SET(FREEGLUT_HEADERS
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@ -81,7 +79,7 @@ SET(FREEGLUT_SRCS
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src/fg_window.c
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)
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# TODO: OpenGL ES requires a compatible version of these files:
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IF(NOT FREEGLUT_GLES2 AND NOT FREEGLUT_GLES1)
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IF(NOT FREEGLUT_GLES)
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LIST(APPEND FREEGLUT_SRCS
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src/fg_font.c
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src/fg_menu.c
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@ -172,7 +170,7 @@ ELSE()
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src/x11/fg_window_x11.c
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src/x11/fg_xinput_x11.c
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)
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IF(NOT(FREEGLUT_GLES2 OR FREEGLUT_GLES1))
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IF(NOT(FREEGLUT_GLES))
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LIST(APPEND FREEGLUT_SRCS
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src/x11/fg_internal_x11_glx.h
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src/x11/fg_display_x11_glx.c
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@ -183,7 +181,7 @@ ELSE()
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)
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ENDIF()
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ENDIF()
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IF(FREEGLUT_GLES2 OR FREEGLUT_GLES1)
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IF(FREEGLUT_GLES)
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LIST(APPEND FREEGLUT_SRCS
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src/egl/fg_internal_egl.h
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src/egl/fg_display_egl.c
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@ -199,18 +197,14 @@ IF(FREEGLUT_GLES2 OR FREEGLUT_GLES1)
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)
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ENDIF()
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# For OpenGL ES (GLES):
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# - compile with -DFREEGLUT_GLES1 and -DFREEGLUT_GLES2 to cleanly
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# bootstrap headers inclusion in freeglut_std.h; these constants
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# also need to be defined in client applications (e.g. through
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# pkg-config), but use GLES constants directly for all other needs
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# - define GLES version-specific library
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IF(FREEGLUT_GLES2)
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ADD_DEFINITIONS(-DFREEGLUT_GLES2)
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LIST(APPEND LIBS GLESv2 EGL)
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ELSEIF(FREEGLUT_GLES1)
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ADD_DEFINITIONS(-DFREEGLUT_GLES1)
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LIST(APPEND LIBS GLESv1_CM EGL)
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# For OpenGL ES (GLES): compile with -DFREEGLUT_GLES to cleanly
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# bootstrap headers inclusion in freeglut_std.h; this constant also
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# need to be defined in client applications (e.g. through pkg-config),
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# but do use GLES constants directly for all other needs
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# GLES1 and GLES2 libraries are compatible and can be co-linked.
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IF(FREEGLUT_GLES)
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ADD_DEFINITIONS(-DFREEGLUT_GLES)
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LIST(APPEND LIBS GLESv2 GLESv1_CM EGL)
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ELSE()
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FIND_PACKAGE(OpenGL REQUIRED)
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LIST(APPEND LIBS ${OPENGL_gl_LIBRARY})
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@ -369,10 +363,8 @@ ELSE()
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# - the shared library should link to the dependency libraries so that the user
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# won't have to link them explicitly (they shouldn't have to know that we depend
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# on Xrandr or Xxf86vm)
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IF(FREEGLUT_GLES2)
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SET(LIBNAME freeglut-gles2)
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ELSEIF(FREEGLUT_GLES1)
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SET(LIBNAME freeglut-gles1)
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IF(FREEGLUT_GLES)
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SET(LIBNAME freeglut-gles)
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ELSE()
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SET(LIBNAME glut)
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ENDIF()
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@ -489,29 +481,17 @@ ADD_DEMO(timer progs/demos/timer/timer.c)
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# Define static build dependencies
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IF(WIN32)
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SET(PC_LIBS_PRIVATE "-lopengl32 -lwinmm -lgdi32 -lm")
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ELSEIF(FREEGLUT_GLES2)
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ELSEIF(FREEGLUT_GLES)
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IF(ANDROID)
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SET(PC_LIBS_PRIVATE "-llog -landroid -lGLESv2 -lEGL -lm")
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SET(PC_LIBS_PRIVATE "-llog -landroid -lGLESv2 -lGLESv1_CM -lEGL -lm")
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ELSEIF(BLACKBERRY)
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IF(PLAYBOOK)
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SET(PC_LIBS_PRIVATE "-lbps -lscreen -lGLESv2 -lEGL -lm")
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SET(PC_LIBS_PRIVATE "-lbps -lscreen -lGLESv2 -lGLESv1_CM -lEGL -lm")
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ELSE()
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SET(PC_LIBS_PRIVATE "-lbps -lslog2 -lscreen -lGLESv2 -lEGL -lm")
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SET(PC_LIBS_PRIVATE "-lbps -lslog2 -lscreen -lGLESv2 -lGLESv1_CM -lEGL -lm")
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ENDIF()
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ELSE()
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SET(PC_LIBS_PRIVATE "-lX11 -lXxf86vm -lXrandr -lGLESv2 -lEGL -lm")
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ENDIF()
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ELSEIF(FREEGLUT_GLES1)
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IF(ANDROID)
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SET(PC_LIBS_PRIVATE "-llog -landroid -lGLESv1_CM -lEGL -lm")
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ELSEIF(BLACKBERRY)
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IF(PLAYBOOK)
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SET(PC_LIBS_PRIVATE "-lbps -lscreen -lGLESv1_CM -lEGL -lm")
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ELSE()
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SET(PC_LIBS_PRIVATE "-lbps -lslog2 -lscreen -lGLESv1_CM -lEGL -lm")
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ENDIF()
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ELSE()
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SET(PC_LIBS_PRIVATE "-lX11 -lXxf86vm -lXrandr -lGLESv1_CM -lEGL -lm")
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SET(PC_LIBS_PRIVATE "-lX11 -lXxf86vm -lXrandr -lGLESv2 -lGLESv1_CM -lEGL -lm")
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ENDIF()
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ELSE()
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SET(PC_LIBS_PRIVATE "-lX11 -lXxf86vm -lXrandr -lGL -lm")
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@ -520,16 +500,12 @@ ENDIF()
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# bootstrap headers inclusion in freeglut_std.h:
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SET(PC_LIBNAME "glut")
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SET(PC_FILENAME "freeglut.pc")
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IF(FREEGLUT_GLES2)
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SET(PC_CFLAGS "-DFREEGLUT_GLES2")
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SET(PC_LIBNAME "freeglut-gles2")
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SET(PC_FILENAME "freeglut-gles2.pc")
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ELSEIF(FREEGLUT_GLES1)
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SET(PC_CFLAGS "-DFREEGLUT_GLES1")
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SET(PC_LIBNAME "freeglut-gles1")
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SET(PC_FILENAME "freeglut-gles1.pc")
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IF(FREEGLUT_GLES)
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SET(PC_CFLAGS "-DFREEGLUT_GLES")
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SET(PC_LIBNAME "freeglut-gles")
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SET(PC_FILENAME "freeglut-gles.pc")
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ENDIF()
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CONFIGURE_FILE(${CMAKE_CURRENT_SOURCE_DIR}/freeglut.pc.in ${CMAKE_BINARY_DIR}/freeglut.pc @ONLY)
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INSTALL(FILES ${CMAKE_BINARY_DIR}/freeglut.pc DESTINATION share/pkgconfig/ RENAME ${PC_FILENAME})
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# TODO: change the library and .pc name when building for GLES,
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# e.g. -lglut-GLES2
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# e.g. -lglut-GLES
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@ -2,8 +2,8 @@ LOCAL_PATH:= $(call my-dir)
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include $(CLEAR_VARS)
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LOCAL_MODULE := freeglut-gles1
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LOCAL_SRC_FILES := lib/libfreeglut-gles1.a
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LOCAL_MODULE := freeglut-gles
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LOCAL_SRC_FILES := lib/libfreeglut-gles.a
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LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
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include $(PREBUILT_STATIC_LIBRARY)
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@ -1,9 +0,0 @@
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LOCAL_PATH:= $(call my-dir)
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include $(CLEAR_VARS)
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LOCAL_MODULE := freeglut-gles2
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LOCAL_SRC_FILES := lib/libfreeglut-gles2.a
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LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
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include $(PREBUILT_STATIC_LIBRARY)
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@ -129,15 +129,13 @@
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/*
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* Always include OpenGL and GLU headers
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*/
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/* Note: FREEGLUT_GLES1 and FREEGLUT_GLES2 are only used to cleanly
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bootstrap headers inclusion here; use GLES constants directly
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/* Note: FREEGLUT_GLES is only used to cleanly bootstrap headers
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inclusion here; use GLES constants directly
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(e.g. GL_ES_VERSION_2_0) for all other needs */
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#ifdef FREEGLUT_GLES2
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# include <EGL/egl.h>
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# include <GLES2/gl2.h>
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#elif FREEGLUT_GLES1
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#ifdef FREEGLUT_GLES
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# include <EGL/egl.h>
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# include <GLES/gl.h>
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# include <GLES2/gl2.h>
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#elif __APPLE__
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# include <OpenGL/gl.h>
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# include <OpenGL/glu.h>
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@ -11,7 +11,7 @@ ENDIF(CMAKE_COMPILER_IS_GNUCC)
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# FreeGLUT
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include(FindPkgConfig)
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pkg_check_modules(freeglut REQUIRED freeglut-gles1>=3.0.0)
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pkg_check_modules(freeglut REQUIRED freeglut-gles>=3.0.0)
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if(freeglut_FOUND)
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include_directories(${freeglut_STATIC_INCLUDE_DIRS})
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link_directories(${freeglut_STATIC_LIBRARY_DIRS})
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@ -27,39 +27,49 @@
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#include "fg_internal.h"
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int fghChooseConfig(EGLConfig* config) {
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const EGLint attribs[] = {
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EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
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#ifdef GL_ES_VERSION_2_0
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EGLint attribs[32];
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int i = 0;
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attribs[i++] = EGL_SURFACE_TYPE;
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attribs[i++] = EGL_WINDOW_BIT;
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if (fgState.MajorVersion >= 2) {
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/*
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* Khronos does not specify a EGL_OPENGL_ES3_BIT outside of the OpenGL extension "EGL_KHR_create_context". There are numerous references on the internet that
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* say to use EGL_OPENGL_ES3_BIT, followed by many saying they can't find it in any headers. In fact, the offical updated specification for EGL does not have
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* any references to OpenGL ES 3.0. Tests have shown that EGL_OPENGL_ES2_BIT will work with ES 3.0.
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*/
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EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
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#elif GL_VERSION_ES_CM_1_0 || GL_VERSION_ES_CL_1_0 || GL_VERSION_ES_CM_1_1 || GL_VERSION_ES_CL_1_1
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EGL_RENDERABLE_TYPE, EGL_OPENGL_ES_BIT,
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#else
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EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
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#endif
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attribs[i++] = EGL_RENDERABLE_TYPE;
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attribs[i++] = EGL_OPENGL_ES2_BIT;
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} else {
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attribs[i++] = EGL_RENDERABLE_TYPE;
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attribs[i++] = EGL_OPENGL_ES_BIT;
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}
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/* Technically it's possible to request a standard OpenGL (non-ES)
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context, but currently our build system assumes EGL => GLES */
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/* attribs[i++] = EGL_RENDERABLE_TYPE; */
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/* attribs[i++] = EGL_OPENGL_BIT; */
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#ifdef TARGET_HOST_BLACKBERRY
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/* Only 888 and 565 seem to work. Based on
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http://qt.gitorious.org/qt/qtbase/source/893deb1a93021cdfabe038cdf1869de33a60cbc9:src/plugins/platforms/qnx/qqnxglcontext.cpp and
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https://twitter.com/BlackBerryDev/status/380720927475912706 */
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EGL_BLUE_SIZE, 8,
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EGL_GREEN_SIZE, 8,
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EGL_RED_SIZE, 8,
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attribs[i++] = EGL_BLUE_SIZE; attribs[i++] = 8;
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attribs[i++] = EGL_GREEN_SIZE; attribs[i++] = 8;
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attribs[i++] = EGL_RED_SIZE; attribs[i++] = 8;
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#else
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EGL_BLUE_SIZE, 1,
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EGL_GREEN_SIZE, 1,
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EGL_RED_SIZE, 1,
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attribs[i++] = EGL_BLUE_SIZE; attribs[i++] = 1;
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attribs[i++] = EGL_GREEN_SIZE; attribs[i++] = 1;
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attribs[i++] = EGL_RED_SIZE; attribs[i++] = 1;
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#endif
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EGL_ALPHA_SIZE, (fgState.DisplayMode & GLUT_ALPHA) ? 1 : 0,
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EGL_DEPTH_SIZE, (fgState.DisplayMode & GLUT_DEPTH) ? 1 : 0,
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EGL_STENCIL_SIZE, (fgState.DisplayMode & GLUT_STENCIL) ? 1 : 0,
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EGL_SAMPLE_BUFFERS, (fgState.DisplayMode & GLUT_MULTISAMPLE) ? 1 : 0,
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EGL_SAMPLES, (fgState.DisplayMode & GLUT_MULTISAMPLE) ? fgState.SampleNumber : 0,
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EGL_NONE
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};
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attribs[i++] = EGL_ALPHA_SIZE;
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attribs[i++] = (fgState.DisplayMode & GLUT_ALPHA) ? 1 : 0;
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attribs[i++] = EGL_DEPTH_SIZE;
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attribs[i++] = (fgState.DisplayMode & GLUT_DEPTH) ? 1 : 0;
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attribs[i++] = EGL_STENCIL_SIZE;
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attribs[i++] = (fgState.DisplayMode & GLUT_STENCIL) ? 1 : 0;
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attribs[i++] = EGL_SAMPLE_BUFFERS;
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attribs[i++] = (fgState.DisplayMode & GLUT_MULTISAMPLE) ? 1 : 0;
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attribs[i++] = EGL_SAMPLES;
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attribs[i++] = (fgState.DisplayMode & GLUT_MULTISAMPLE) ? fgState.SampleNumber : 0;
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attribs[i++] = EGL_NONE;
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EGLint num_config;
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if (!eglChooseConfig(fgDisplay.pDisplay.egl.Display,
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@ -76,39 +86,26 @@ int fghChooseConfig(EGLConfig* config) {
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*/
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EGLContext fghCreateNewContextEGL( SFG_Window* window ) {
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EGLContext context;
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EGLint ver = -1;
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EGLDisplay eglDisplay = fgDisplay.pDisplay.egl.Display;
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EGLConfig eglConfig = window->Window.pContext.egl.Config;
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/* Ensure OpenGLES 2.0 context */
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static EGLint ctx_attribs[] = {
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#ifdef GL_ES_VERSION_2_0
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EGL_CONTEXT_CLIENT_VERSION, 2,
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#elif GL_VERSION_ES_CM_1_0 || GL_VERSION_ES_CL_1_0 || GL_VERSION_ES_CM_1_1 || GL_VERSION_ES_CL_1_1
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EGL_CONTEXT_CLIENT_VERSION, 1,
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#endif
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EGL_NONE
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};
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#ifdef GL_ES_VERSION_2_0
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/*
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* As GLES 3.0 is backwards compatible with GLES 2.0, we set 2.0 as default unless the user states a different version.
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* This updates the context attributes and lets us check that the correct version was set when we query it after creation.
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*/
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int gles2Ver = fgState.MajorVersion <= 2 ? 2 : fgState.MajorVersion;
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ctx_attribs[1] = gles2Ver;
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#endif
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/* On GLES, user specifies the target version with glutInitContextVersion */
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EGLint ctx_attribs[32];
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int i = 0;
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ctx_attribs[i++] = EGL_CONTEXT_CLIENT_VERSION;
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ctx_attribs[i++] = fgState.MajorVersion;
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ctx_attribs[i++] = EGL_NONE;
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context = eglCreateContext(eglDisplay, eglConfig, EGL_NO_CONTEXT, ctx_attribs);
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if (context == EGL_NO_CONTEXT) {
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fgWarning("Cannot initialize EGL context, err=%x\n", eglGetError());
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fghContextCreationError();
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}
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||||
EGLint ver = -1;
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eglQueryContext(fgDisplay.pDisplay.egl.Display, context, EGL_CONTEXT_CLIENT_VERSION, &ver);
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#ifdef GL_ES_VERSION_2_0
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||||
if (ver != gles2Ver)
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#else
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||||
if (ver != 1)
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||||
#endif
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||||
if (ver != fgState.MajorVersion)
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||||
fgError("Wrong GLES major version: %d\n", ver);
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||||
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return context;
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@ -44,14 +44,12 @@
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||||
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||||
/* declare for drawing using the different OpenGL versions here so we can
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||||
have a nice code order below */
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||||
#ifndef GL_ES_VERSION_2_0
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||||
static void fghDrawGeometryWire11(GLfloat *vertices, GLfloat *normals,
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||||
GLushort *vertIdxs, GLsizei numParts, GLsizei numVertPerPart, GLenum vertexMode,
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||||
GLushort *vertIdxs2, GLsizei numParts2, GLsizei numVertPerPart2
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||||
);
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||||
static void fghDrawGeometrySolid11(GLfloat *vertices, GLfloat *normals, GLfloat *textcs, GLsizei numVertices,
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||||
GLushort *vertIdxs, GLsizei numParts, GLsizei numVertIdxsPerPart);
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||||
#endif
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||||
static void fghDrawGeometryWire20(GLfloat *vertices, GLfloat *normals, GLsizei numVertices,
|
||||
GLushort *vertIdxs, GLsizei numParts, GLsizei numVertPerPart, GLenum vertexMode,
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||||
GLushort *vertIdxs2, GLsizei numParts2, GLsizei numVertPerPart2,
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||||
@ -62,9 +60,7 @@ static void fghDrawGeometrySolid20(GLfloat *vertices, GLfloat *normals, GLfloat
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GLint attribute_v_coord, GLint attribute_v_normal, GLint attribute_v_texture);
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||||
/* declare function for generating visualization of normals */
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||||
static void fghGenerateNormalVisualization(GLfloat *vertices, GLfloat *normals, GLsizei numVertices);
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||||
#ifndef GL_ES_VERSION_2_0
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||||
static void fghDrawNormalVisualization11();
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||||
#endif
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||||
static void fghDrawNormalVisualization20(GLint attribute_v_coord);
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||||
|
||||
/* Drawing geometry:
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||||
@ -147,12 +143,10 @@ void fghDrawGeometryWire(GLfloat *vertices, GLfloat *normals, GLsizei numVertice
|
||||
vertIdxs, numParts, numVertPerPart, vertexMode,
|
||||
vertIdxs2, numParts2, numVertPerPart2,
|
||||
attribute_v_coord, attribute_v_normal);
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||||
#ifndef GL_ES_VERSION_2_0
|
||||
else
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||||
fghDrawGeometryWire11(vertices, normals,
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||||
vertIdxs, numParts, numVertPerPart, vertexMode,
|
||||
vertIdxs2, numParts2, numVertPerPart2);
|
||||
#endif
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||||
}
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||||
|
||||
/* Draw the geometric shape with filled triangles
|
||||
@ -203,7 +197,6 @@ void fghDrawGeometrySolid(GLfloat *vertices, GLfloat *normals, GLfloat *textcs,
|
||||
/* draw normals for each vertex as well */
|
||||
fghDrawNormalVisualization20(attribute_v_coord);
|
||||
}
|
||||
#ifndef GL_ES_VERSION_2_0
|
||||
else
|
||||
{
|
||||
fghDrawGeometrySolid11(vertices, normals, textcs, numVertices,
|
||||
@ -213,13 +206,11 @@ void fghDrawGeometrySolid(GLfloat *vertices, GLfloat *normals, GLfloat *textcs,
|
||||
/* draw normals for each vertex as well */
|
||||
fghDrawNormalVisualization11();
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* Version for OpenGL (ES) 1.1 */
|
||||
#ifndef GL_ES_VERSION_2_0
|
||||
static void fghDrawGeometryWire11(GLfloat *vertices, GLfloat *normals,
|
||||
GLushort *vertIdxs, GLsizei numParts, GLsizei numVertPerPart, GLenum vertexMode,
|
||||
GLushort *vertIdxs2, GLsizei numParts2, GLsizei numVertPerPart2
|
||||
@ -282,7 +273,6 @@ static void fghDrawGeometrySolid11(GLfloat *vertices, GLfloat *normals, GLfloat
|
||||
if (textcs)
|
||||
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
|
||||
}
|
||||
#endif
|
||||
|
||||
/* Version for OpenGL (ES) >= 2.0 */
|
||||
static void fghDrawGeometryWire20(GLfloat *vertices, GLfloat *normals, GLsizei numVertices,
|
||||
@ -540,7 +530,6 @@ static void fghGenerateNormalVisualization(GLfloat *vertices, GLfloat *normals,
|
||||
}
|
||||
|
||||
/* Version for OpenGL (ES) 1.1 */
|
||||
#ifndef GL_ES_VERSION_2_0
|
||||
static void fghDrawNormalVisualization11()
|
||||
{
|
||||
GLfloat currentColor[4];
|
||||
@ -559,7 +548,6 @@ static void fghDrawNormalVisualization11()
|
||||
free(verticesForNormalVisualization);
|
||||
glColor4f(currentColor[0],currentColor[1],currentColor[2],currentColor[3]);
|
||||
}
|
||||
#endif
|
||||
|
||||
/* Version for OpenGL (ES) >= 2.0 */
|
||||
static void fghDrawNormalVisualization20(GLint attribute_v_coord)
|
||||
|
||||
@ -43,8 +43,9 @@ void FGAPIENTRY glutSetVertexAttribTexCoord2(GLint attrib) {
|
||||
}
|
||||
|
||||
void fgInitGL2() {
|
||||
#ifndef GL_ES_VERSION_2_0
|
||||
fgState.HasOpenGL20 = 0;
|
||||
#ifdef GL_ES_VERSION_2_0
|
||||
fgState.HasOpenGL20 = (fgState.MajorVersion >= 2);
|
||||
#else
|
||||
/* TODO: Mesa returns a valid stub function, rather than NULL,
|
||||
when we request a non-existent function */
|
||||
#define CHECK(func, a) if ((a) == NULL) { fgWarning("fgInitGL2: " func " is NULL"); return; }
|
||||
@ -56,6 +57,6 @@ void fgInitGL2() {
|
||||
CHECK("fghEnableVertexAttribArray", fghEnableVertexAttribArray = (FGH_PFNGLENABLEVERTEXATTRIBARRAYPROC)glutGetProcAddress("glEnableVertexAttribArray"));
|
||||
CHECK("fghDisableVertexAttribArray", fghDisableVertexAttribArray = (FGH_PFNGLDISABLEVERTEXATTRIBARRAYPROC)glutGetProcAddress("glDisableVertexAttribArray"));
|
||||
#undef CHECK
|
||||
#endif
|
||||
fgState.HasOpenGL20 = 1;
|
||||
#endif
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user