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Documentation work.
This commit is contained in:
Camilla Berglund
parent
159f9b9526
commit
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361
docs/window.dox
361
docs/window.dox
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/*! @page window Window handling
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/*! @page window Window handling
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@tableofcontents
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@tableofcontents
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The primary purpose of GLFW is to provide a simple interface to window
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The primary purpose of GLFW is to provide a simple interface to window
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management and OpenGL and OpenGL ES context creation. GLFW supports
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management and OpenGL and OpenGL ES context creation. GLFW supports
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multiple windows, which can be either a normal desktop window or
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multiple windows, which can be either a normal desktop window or
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a fullscreen window.
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a fullscreen window.
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@section window_object Window objects
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@section window_object Window objects
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The @ref GLFWwindow object encapsulates both a window and a context. They are
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The @ref GLFWwindow object encapsulates both a window and a context. They are
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created with @ref glfwCreateWindow and destroyed with @ref glfwDestroyWindow (or
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created with @ref glfwCreateWindow and destroyed with @ref glfwDestroyWindow (or
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@ref glfwTerminate, if any remain). As the window and context are inseparably
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@ref glfwTerminate, if any remain). As the window and context are inseparably
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linked, the window handle (i.e. window object pointer) is used as a context
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linked, the window handle (i.e. window object pointer) is used as a context
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handle as well, for example when calling @ref glfwMakeContextCurrent.
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handle as well, for example when calling @ref glfwMakeContextCurrent.
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@section window_hints Window hints
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@section window_hints Window hints
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There are a number of hints that can be set before the creation of a window.
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There are a number of hints that can be set before the creation of a window.
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Some affect the window itself, others its framebuffer or context. These hints
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Some affect the window itself, others its framebuffer or context. These hints
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are set to their default values each time the library is initialized with @ref
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are set to their default values each time the library is initialized with @ref
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glfwInit, can be individually set with @ref glfwWindowHint and reset all at once
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glfwInit, can be individually set with @ref glfwWindowHint and reset all at once
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to their defaults with @ref glfwDefaultWindowHints.
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to their defaults with @ref glfwDefaultWindowHints.
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Note again that they need to be set *before* the creation of the window you wish
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Note again that they need to be set *before* the creation of the window you wish
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to have the specified properties.
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to have the specified properties.
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@subsection window_hints_hard Hard and soft constraints
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@subsection window_hints_hard Hard and soft constraints
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Some window hints are hard constraints. These must match the available
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Some window hints are hard constraints. These must match the available
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capabilities *exactly* for window and context creation to succeed. Hints
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capabilities *exactly* for window and context creation to succeed. Hints
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that are not hard constraints are matched as closely as possible, but the
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that are not hard constraints are matched as closely as possible, but the
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resulting window and context may differ from what these hints requested. To
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resulting window and context may differ from what these hints requested. To
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find out the actual parameters of the created window and context, use the
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find out the actual parameters of the created window and context, use the
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@ref glfwGetWindowParam function.
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@ref glfwGetWindowParam function.
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The following hints are hard constraints:
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The following hints are hard constraints:
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- `GLFW_STEREO`
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- `GLFW_STEREO`
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- `GLFW_CLIENT_API`
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- `GLFW_CLIENT_API`
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The following additional hints are hard constraints if requesting an OpenGL
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The following additional hints are hard constraints if requesting an OpenGL
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context:
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context:
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- `GLFW_OPENGL_FORWARD_COMPAT`
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- `GLFW_OPENGL_FORWARD_COMPAT`
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- `GLFW_OPENGL_PROFILE`
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- `GLFW_OPENGL_PROFILE`
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Hints that do not apply to a given type of window or context are ignored.
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Hints that do not apply to a given type of window or context are ignored.
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@subsection window_hints_fb Framebuffer related hints
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@subsection window_hints_fb Framebuffer related hints
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The `GLFW_RED_BITS`, `GLFW_GREEN_BITS`, `GLFW_BLUE_BITS`, `GLFW_ALPHA_BITS`,
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The `GLFW_RED_BITS`, `GLFW_GREEN_BITS`, `GLFW_BLUE_BITS`, `GLFW_ALPHA_BITS`,
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`GLFW_DEPTH_BITS` and `GLFW_STENCIL_BITS` hints specify the desired bit
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`GLFW_DEPTH_BITS` and `GLFW_STENCIL_BITS` hints specify the desired bit
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depths of the various components of the default framebuffer.
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depths of the various components of the default framebuffer.
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The `GLFW_ACCUM_RED_BITS`, `GLFW_ACCUM_GREEN_BITS`, `GLFW_ACCUM_BLUE_BITS`
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The `GLFW_ACCUM_RED_BITS`, `GLFW_ACCUM_GREEN_BITS`, `GLFW_ACCUM_BLUE_BITS`
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and `GLFW_ACCUM_ALPHA_BITS` hints specify the desired bit depths of the
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and `GLFW_ACCUM_ALPHA_BITS` hints specify the desired bit depths of the
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various components of the accumulation buffer.
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various components of the accumulation buffer.
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The `GLFW_AUX_BUFFERS` hint specifies the desired number of auxiliary
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The `GLFW_AUX_BUFFERS` hint specifies the desired number of auxiliary
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buffers.
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buffers.
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The `GLFW_STEREO` hint specifies whether to use stereoscopic rendering.
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The `GLFW_STEREO` hint specifies whether to use stereoscopic rendering.
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The `GLFW_SAMPLES` hint specifies the desired number of samples to use for
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The `GLFW_SAMPLES` hint specifies the desired number of samples to use for
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multisampling.
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multisampling. Zero disables multisampling.
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The `GLFW_SRGB_CAPABLE` hint specifies whether the framebuffer should be
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The `GLFW_SRGB_CAPABLE` hint specifies whether the framebuffer should be
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sRGB capable.
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sRGB capable.
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@subsection window_hints_ctx Context related hints
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@subsection window_hints_ctx Context related hints
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The `GLFW_CLIENT_API` hint specifies which client API to create the context
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The `GLFW_CLIENT_API` hint specifies which client API to create the context
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for. Possible values are `GLFW_OPENGL_API` and `GLFW_OPENGL_ES_API`.
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for. Possible values are `GLFW_OPENGL_API` and `GLFW_OPENGL_ES_API`.
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The `GLFW_CONTEXT_VERSION_MAJOR` and `GLFW_CONTEXT_VERSION_MINOR` hints
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The `GLFW_CONTEXT_VERSION_MAJOR` and `GLFW_CONTEXT_VERSION_MINOR` hints
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specify the client API version that the created context must be compatible
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specify the client API version that the created context must be compatible
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with.
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with.
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For OpenGL, these hints are *not* hard constraints, as they don't have to
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For OpenGL, these hints are *not* hard constraints, as they don't have to
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match exactly, but @ref glfwCreateWindow will still fail if the resulting
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match exactly, but @ref glfwCreateWindow will still fail if the resulting
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OpenGL version is less than the one requested. It is therefore perfectly
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OpenGL version is less than the one requested. It is therefore perfectly
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safe to use the default of version 1.0 for legacy code and you may still
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safe to use the default of version 1.0 for legacy code and you may still
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get backwards-compatible contexts of version 3.0 and above when available.
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get backwards-compatible contexts of version 3.0 and above when available.
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While there is no way to ask the driver for a context of the highest supported
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While there is no way to ask the driver for a context of the highest supported
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version, most drivers provide this when you ask GLFW for a version
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version, most drivers provide this when you ask GLFW for a version
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1.0 context.
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1.0 context.
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For OpenGL ES, these hints are hard constraints, as there is no backward
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For OpenGL ES, these hints are hard constraints.
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compatibility between OpenGL ES versions.
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If an OpenGL context is requested, the `GLFW_OPENGL_FORWARD_COMPAT` hint
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If an OpenGL context is requested, the `GLFW_OPENGL_FORWARD_COMPAT` hint
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specifies whether the OpenGL context should be forward-compatible, i.e. one
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specifies whether the OpenGL context should be forward-compatible, i.e. one
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where all functionality deprecated in the requested version of OpenGL is
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where all functionality deprecated in the requested version of OpenGL is
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removed. This may only be used if the requested OpenGL version is 3.0 or
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removed. This may only be used if the requested OpenGL version is 3.0 or
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above. If another client API is requested, this hint is ignored.
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above. If another client API is requested, this hint is ignored.
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If an OpenGL context is requested, the `GLFW_OPENGL_DEBUG_CONTEXT` hint
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If an OpenGL context is requested, the `GLFW_OPENGL_DEBUG_CONTEXT` hint
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specifies whether to create a debug OpenGL context, which may have
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specifies whether to create a debug OpenGL context, which may have
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additional error and performance issue reporting functionality. If another
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additional error and performance issue reporting functionality. If another
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client API is requested, this hint is ignored.
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client API is requested, this hint is ignored.
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If an OpenGL context is requested, the `GLFW_OPENGL_PROFILE` hint specifies
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If an OpenGL context is requested, the `GLFW_OPENGL_PROFILE` hint specifies
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which OpenGL profile to create the context for. Possible values are one of
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which OpenGL profile to create the context for. Possible values are one of
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`GLFW_OPENGL_CORE_PROFILE` or `GLFW_OPENGL_COMPAT_PROFILE`, or
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`GLFW_OPENGL_CORE_PROFILE` or `GLFW_OPENGL_COMPAT_PROFILE`, or
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`GLFW_OPENGL_NO_PROFILE` to not request a specific profile. If requesting
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`GLFW_OPENGL_NO_PROFILE` to not request a specific profile. If requesting
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an OpenGL version below 3.2, `GLFW_OPENGL_NO_PROFILE` must be used. If
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an OpenGL version below 3.2, `GLFW_OPENGL_NO_PROFILE` must be used. If
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another client API is requested, this hint is ignored.
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another client API is requested, this hint is ignored.
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The `GLFW_CONTEXT_ROBUSTNESS` hint specifies the robustness strategy to be
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The `GLFW_CONTEXT_ROBUSTNESS` hint specifies the robustness strategy to be
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used by the context. This can be one of `GLFW_NO_RESET_NOTIFICATION` or
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used by the context. This can be one of `GLFW_NO_RESET_NOTIFICATION` or
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`GLFW_LOSE_CONTEXT_ON_RESET`, or `GLFW_NO_ROBUSTNESS` to not request
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`GLFW_LOSE_CONTEXT_ON_RESET`, or `GLFW_NO_ROBUSTNESS` to not request
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a robustness strategy.
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a robustness strategy.
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@subsection window_hints_wnd Window related hints
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@subsection window_hints_wnd Window related hints
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The `GLFW_RESIZABLE` hint specifies whether the window will be resizable *by the
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The `GLFW_RESIZABLE` hint specifies whether the window will be resizable by
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user*. The window will still be resizable using the @ref glfwSetWindowSize
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the user. The window will still be resizable using the @ref
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function. This hint is ignored for fullscreen windows.
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glfwSetWindowSize function. This hint is ignored for fullscreen windows.
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The `GLFW_VISIBLE` hint specifies whether the window will be initially
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The `GLFW_VISIBLE` hint specifies whether the window will be initially
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visible. This hint is ignored for fullscreen windows.
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visible. This hint is ignored for fullscreen windows.
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The `GLFW_DECORATED` hint specifies whether the window will have window
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The `GLFW_DECORATED` hint specifies whether the window will have window
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decorations such as a border, a close widget, etc. This hint is ignored for
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decorations such as a border, a close widget, etc. This hint is ignored for
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fullscreen windows. Note that even though a window may lack a close widget, it
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fullscreen windows. Note that even though a window may lack a close widget, it
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is usually still possible for the user to generate close events.
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is usually still possible for the user to generate close events.
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@subsection window_hints_values Supported and default values
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@subsection window_hints_values Supported and default values
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| Name | Default value | Supported values |
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| Name | Default value | Supported values |
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| ---------------------------- | ------------------------ | ----------------------- |
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| ---------------------------- | ------------------------ | ----------------------- |
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| `GLFW_RESIZABLE` | `GL_TRUE` | `GL_TRUE` or `GL_FALSE` |
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| `GLFW_RESIZABLE` | `GL_TRUE` | `GL_TRUE` or `GL_FALSE` |
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| `GLFW_VISIBLE` | `GL_TRUE` | `GL_TRUE` or `GL_FALSE` |
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| `GLFW_VISIBLE` | `GL_TRUE` | `GL_TRUE` or `GL_FALSE` |
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| `GLFW_DECORATED` | `GL_TRUE` | `GL_TRUE` or `GL_FALSE` |
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| `GLFW_DECORATED` | `GL_TRUE` | `GL_TRUE` or `GL_FALSE` |
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| `GLFW_RED_BITS` | 8 | 0 to `INT_MAX` |
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| `GLFW_RED_BITS` | 8 | 0 to `INT_MAX` |
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| `GLFW_GREEN_BITS` | 8 | 0 to `INT_MAX` |
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| `GLFW_GREEN_BITS` | 8 | 0 to `INT_MAX` |
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| `GLFW_BLUE_BITS` | 8 | 0 to `INT_MAX` |
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| `GLFW_BLUE_BITS` | 8 | 0 to `INT_MAX` |
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| `GLFW_ALPHA_BITS` | 8 | 0 to `INT_MAX` |
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| `GLFW_ALPHA_BITS` | 8 | 0 to `INT_MAX` |
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| `GLFW_DEPTH_BITS` | 24 | 0 to `INT_MAX` |
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| `GLFW_DEPTH_BITS` | 24 | 0 to `INT_MAX` |
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| `GLFW_STENCIL_BITS` | 8 | 0 to `INT_MAX` |
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| `GLFW_STENCIL_BITS` | 8 | 0 to `INT_MAX` |
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| `GLFW_ACCUM_RED_BITS` | 0 | 0 to `INT_MAX` |
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| `GLFW_ACCUM_RED_BITS` | 0 | 0 to `INT_MAX` |
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| `GLFW_ACCUM_GREEN_BITS` | 0 | 0 to `INT_MAX` |
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| `GLFW_ACCUM_GREEN_BITS` | 0 | 0 to `INT_MAX` |
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| `GLFW_ACCUM_BLUE_BITS` | 0 | 0 to `INT_MAX` |
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| `GLFW_ACCUM_BLUE_BITS` | 0 | 0 to `INT_MAX` |
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| `GLFW_ACCUM_ALPHA_BITS` | 0 | 0 to `INT_MAX` |
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| `GLFW_ACCUM_ALPHA_BITS` | 0 | 0 to `INT_MAX` |
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| `GLFW_AUX_BUFFERS` | 0 | 0 to `INT_MAX` |
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| `GLFW_AUX_BUFFERS` | 0 | 0 to `INT_MAX` |
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| `GLFW_SAMPLES` | 0 | 0 to `INT_MAX` |
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| `GLFW_SAMPLES` | 0 | 0 to `INT_MAX` |
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| `GLFW_STEREO` | `GL_FALSE` | `GL_TRUE` or `GL_FALSE` |
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| `GLFW_STEREO` | `GL_FALSE` | `GL_TRUE` or `GL_FALSE` |
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| `GLFW_SRGB_CAPABLE` | `GL_FALSE` | `GL_TRUE` or `GL_FALSE` |
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| `GLFW_SRGB_CAPABLE` | `GL_FALSE` | `GL_TRUE` or `GL_FALSE` |
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| `GLFW_CLIENT_API` | `GLFW_OPENGL_API` | `GLFW_OPENGL_API` or `GLFW_OPENGL_ES_API` |
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| `GLFW_CLIENT_API` | `GLFW_OPENGL_API` | `GLFW_OPENGL_API` or `GLFW_OPENGL_ES_API` |
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| `GLFW_CONTEXT_VERSION_MAJOR` | 1 | Any valid major version number of the chosen client API |
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| `GLFW_CONTEXT_VERSION_MAJOR` | 1 | Any valid major version number of the chosen client API |
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| `GLFW_CONTEXT_VERSION_MINOR` | 0 | Any valid minor version number of the chosen client API |
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| `GLFW_CONTEXT_VERSION_MINOR` | 0 | Any valid minor version number of the chosen client API |
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| `GLFW_CONTEXT_ROBUSTNESS` | `GLFW_NO_ROBUSTNESS` | `GLFW_NO_ROBUSTNESS`, `GLFW_NO_RESET_NOTIFICATION` or `GLFW_LOSE_CONTEXT_ON_RESET` |
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| `GLFW_CONTEXT_ROBUSTNESS` | `GLFW_NO_ROBUSTNESS` | `GLFW_NO_ROBUSTNESS`, `GLFW_NO_RESET_NOTIFICATION` or `GLFW_LOSE_CONTEXT_ON_RESET` |
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| `GLFW_OPENGL_FORWARD_COMPAT` | `GL_FALSE` | `GL_TRUE` or `GL_FALSE` |
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| `GLFW_OPENGL_FORWARD_COMPAT` | `GL_FALSE` | `GL_TRUE` or `GL_FALSE` |
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| `GLFW_OPENGL_DEBUG_CONTEXT` | `GL_FALSE` | `GL_TRUE` or `GL_FALSE` |
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| `GLFW_OPENGL_DEBUG_CONTEXT` | `GL_FALSE` | `GL_TRUE` or `GL_FALSE` |
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| `GLFW_OPENGL_PROFILE` | `GLFW_OPENGL_NO_PROFILE` | `GLFW_OPENGL_NO_PROFILE`, `GLFW_OPENGL_COMPAT_PROFILE` or `GLFW_OPENGL_CORE_PROFILE` |
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| `GLFW_OPENGL_PROFILE` | `GLFW_OPENGL_NO_PROFILE` | `GLFW_OPENGL_NO_PROFILE`, `GLFW_OPENGL_COMPAT_PROFILE` or `GLFW_OPENGL_CORE_PROFILE` |
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@section window_closing Window closing
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@section window_closing Window closing
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When the user attempts to close the window, for example by clicking the close
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When the user attempts to close the window, for example by clicking the close
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widget or using a key chord like Alt+F4, the window's close flag is set and then
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widget or using a key chord like Alt+F4, the window's close flag is set and then
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its close callback is called. The window is not actually destroyed and, unless
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its close callback is called. The window is not actually destroyed and, unless
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you are monitoring the close flag, nothing further happens.
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you are monitoring the close flag, nothing further happens.
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If you do not want the close flag to be set, it can be cleared again from the
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If you do not want the close flag to be set, it can be cleared again from the
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close callback (or from any other point in your program) with @ref
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close callback (or from any other point in your program) with @ref
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glfwSetWindowShouldClose.
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glfwSetWindowShouldClose.
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@section window_dims Window dimensions
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@section window_dims Window dimensions
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Text here.
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Text here.
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*/
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*/
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@ -1121,16 +1121,17 @@ GLFWAPI void glfwWindowHint(int target, int hint);
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*
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*
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* This function creates a window and its associated context. Most of the
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* This function creates a window and its associated context. Most of the
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* options controlling how the window and its context should be created are
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* options controlling how the window and its context should be created are
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* specified via the @ref glfwWindowHint function.
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* specified through @ref glfwWindowHint.
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*
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*
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* Successful creation does not change which context is current. Before you
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* Successful creation does not change which context is current. Before you
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* can use the newly created context, you need to make it current using @ref
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* can use the newly created context, you need to make it current using @ref
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* glfwMakeContextCurrent.
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* glfwMakeContextCurrent.
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*
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*
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* Note that the created window and context may differ from what you requested,
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* Note that the created window and context may differ from what you requested,
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* as not all parameters and hints are hard constraints. This includes the
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* as not all parameters and hints are
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* size of the window, especially for full screen windows. To retrieve the
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* [hard constraints](@ref window_hints_hard). This includes the size of the
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* actual properties of the window and context, use queries like @ref
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* window, especially for full screen windows. To retrieve the actual
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* properties of the window and context, use queries like @ref
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* glfwGetWindowParam and @ref glfwGetWindowSize.
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* glfwGetWindowParam and @ref glfwGetWindowSize.
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*
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*
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* @param[in] width The desired width, in screen coordinates, of the window.
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* @param[in] width The desired width, in screen coordinates, of the window.
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