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Add headless OSMesa backend

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Allows creation and drawing to in-memory OpenGL contexts.

This backend does not provide input.

Related to #850.
This commit is contained in:
Jason Daly
2016-08-30 15:53:19 -07:00
committed by Camilla Berglund
parent a90ee65f7b
commit 368fa9475d
12 changed files with 766 additions and 0 deletions
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CMakeLists.txt
+16
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@@ -41,6 +41,7 @@ endif()
if (UNIX AND NOT APPLE)
option(GLFW_USE_WAYLAND "Use Wayland for window creation" OFF)
option(GLFW_USE_MIR "Use Mir for window creation" OFF)
option(GLFW_USE_OSMESA "Use OSMesa for offscreen context creation" OFF)
endif()
if (MSVC)
@@ -154,6 +155,9 @@ elseif (UNIX)
elseif (GLFW_USE_MIR)
set(_GLFW_MIR 1)
message(STATUS "Using Mir for window creation")
elseif (GLFW_USE_OSMESA)
set(_GLFW_OSMESA 1)
message(STATUS "Using OSMesa for windowless context creation")
else()
set(_GLFW_X11 1)
message(STATUS "Using X11 for window creation")
@@ -318,6 +322,18 @@ if (_GLFW_MIR)
list(APPEND glfw_LIBRARIES "${XKBCOMMON_LIBRARY}")
endif()
#--------------------------------------------------------------------
# Use OSMesa for offscreen context creation
#--------------------------------------------------------------------
if (_GLFW_OSMESA)
find_package(osmesa REQUIRED)
list(APPEND glfw_PKG_DEPS "osmesa")
list(APPEND glfw_INCLUDE_DIRS "${OSMESA_INCLUDE_DIR}")
list(APPEND glfw_LIBRARIES "${OSMESA_LIBRARIES}"
"${CMAKE_THREAD_LIBS_INIT}")
endif()
#--------------------------------------------------------------------
# Use Cocoa for window creation and NSOpenGL for context creation
#--------------------------------------------------------------------