Added idl file for Pepper 3D.

ppapi/api/ppb_graphics_3d.idl

+/* Copyright (c) 2012 The Chromium Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/**
+ * Defines the <code>PPB_Graphics3D</code> struct representing a 3D graphics
+ * context within the browser.
+ */
+
+label Chrome {
+  M15 = 1.0
+};
+
+/**
+ * <code>PPB_Graphics3D</code> defines the interface for a 3D graphics context.
+ * <strong>Example usage from plugin code:</strong>
+ * 
+ * <strong>Setup:</strong>
+ * <code>
+ * PP_Resource context;
+ * int32_t attribs[] = {PP_GRAPHICS3DATTRIB_WIDTH, 800,
+ *                      PP_GRAPHICS3DATTRIB_HEIGHT, 800,
+ *                      PP_GRAPHICS3DATTRIB_NONE};
+ * context = g3d->Create(instance, attribs, &context);
+ * inst->BindGraphics(instance, context);
+ * </code>
+ *
+ * <strong>Present one frame:</strong>
+ * <code>
+ * gles2->Clear(context, GL_COLOR_BUFFER);
+ * g3d->SwapBuffers(context);
+ * </code>
+ *
+ * <strong>Shutdown:</strong>
+ * <code>
+ * core->ReleaseResource(context);
+ * </code>
+ */
+interface PPB_Graphics3D {
+  /**
+   * GetAttribMaxValue() retrieves the maximum supported value for the
+   * given attribute. This function may be used to check if a particular
+   * attribute value is supported before attempting to create a context.
+   *
+   * @param[in] instance The module instance.
+   * @param[in] attribute The attribute for which maximum value is queried.
+   * Attributes that can be queried for include:
+   * - <code>PP_GRAPHICS3DATTRIB_ALPHA_SIZE</code>
+   * - <code>PP_GRAPHICS3DATTRIB_BLUE_SIZE</code>
+   * - <code>PP_GRAPHICS3DATTRIB_GREEN_SIZE</code>
+   * - <code>PP_GRAPHICS3DATTRIB_RED_SIZE</code>
+   * - <code>PP_GRAPHICS3DATTRIB_DEPTH_SIZE</code>
+   * - <code>PP_GRAPHICS3DATTRIB_STENCIL_SIZE</code>
+   * - <code>PP_GRAPHICS3DATTRIB_SAMPLES</code>
+   * - <code>PP_GRAPHICS3DATTRIB_SAMPLE_BUFFERS</code>
+   * - <code>PP_GRAPHICS3DATTRIB_WIDTH</code>
+   * - <code>PP_GRAPHICS3DATTRIB_HEIGHT</code>
+   * @param[out] value The maximum supported value for <code>attribute</code>
+   *
+   * @return Returns <code>PP_TRUE</code> on success or the following on error:
+   * - <code>PP_ERROR_BADRESOURCE</code> if <code>instance</code> is invalid
+   * - <code>PP_ERROR_BADARGUMENT</code> if <code>attribute</code> is invalid
+   *   or <code>value</code> is 0
+   */
+  int32_t GetAttribMaxValue(
+      [in] PP_Resource instance,
+      [in] int32_t attribute,
+      [out] int32_t[] value);

[noelallen1, 2012/02/06 22:26:57]

This is a value, not an array.  [out] int32_t value : An [out] will
automatically be converted to a non-const pointer for C.

[alokp, 2012/02/06 22:32:47]

done.

+
+  /**
+   * Create() creates and initializes a 3D rendering context.
+   * The returned context is off-screen to start with. It must be attached to
+   * a plugin instance using <code>PPB_Instance::BindGraphics</code> to draw
+   * on the web page.
+   *
+   * @param[in] instance The module instance.
+   *
+   * @param[in] share_context The 3D context with which the created context
+   * would share resources. If <code>share_context</code> is not 0, then all
+   * shareable data, as defined by the client API (note that for OpenGL and
+   * OpenGL ES, shareable data excludes texture objects named 0) will be shared
+   * by <code>share_context<code>, all other contexts <code>share_context</code>
+   * already shares with, and the newly created context. An arbitrary number of
+   * <code>PPB_Graphics3D</code> can share data in this fashion.
+   *
+   * @param[out] attrib_list specifies a list of attributes for the context.
+   * It is a list of attribute name-value pairs in which each attribute is
+   * immediately followed by the corresponding desired value. The list is
+   * terminated with <code>PP_GRAPHICS3DATTRIB_NONE</code>.
+   * The <code>attrib_list<code> may be 0 or empty (first attribute is
+   * <code>PP_GRAPHICS3DATTRIB_NONE</code>). If an attribute is not
+   * specified in <code>attrib_list</code>, then the default value is used
+   * (it is said to be specified implicitly).
+   * Attributes for the context are chosen according to an attribute-specific
+   * criteria. Attributes can be classified into two categories:
+   * - AtLeast: The attribute value in the returned context meets or exceeds
+   *            the value specified in <code>attrib_list</code>.
+   * - Exact: The attribute value in the returned context is equal to
+   *          the value specified in <code>attrib_list</code>.
+   *
+   * Attributes that can be specified in <code>attrib_list</code> include:
+   * - <code>PP_GRAPHICS3DATTRIB_ALPHA_SIZE</code>:
+   *   Category: AtLeast Default: 0.
+   * - <code>PP_GRAPHICS3DATTRIB_BLUE_SIZE</code>:
+   *   Category: AtLeast Default: 0.
+   * - <code>PP_GRAPHICS3DATTRIB_GREEN_SIZE</code>:
+   *   Category: AtLeast Default: 0.
+   * - <code>PP_GRAPHICS3DATTRIB_RED_SIZE</code>:
+   *   Category: AtLeast Default: 0.
+   * - <code>PP_GRAPHICS3DATTRIB_DEPTH_SIZE</code>:
+   *   Category: AtLeast Default: 0.
+   * - <code>PP_GRAPHICS3DATTRIB_STENCIL_SIZE</code>:
+   *   Category: AtLeast Default: 0.
+   * - <code>PP_GRAPHICS3DATTRIB_SAMPLES</code>:
+   *   Category: AtLeast Default: 0.
+   * - <code>PP_GRAPHICS3DATTRIB_SAMPLE_BUFFERS</code>:
+   *   Category: AtLeast Default: 0.
+   * - <code>PP_GRAPHICS3DATTRIB_WIDTH</code>:
+   *   Category: Exact Default: 0.
+   * - <code>PP_GRAPHICS3DATTRIB_HEIGHT</code>:
+   *   Category: Exact Default: 0.
+   * - <code>PP_GRAPHICS3DATTRIB_SWAP_BEHAVIOR</code>:
+   *   Category: Exact Default: Implementation defined.
+   *
+   * @return A <code>PP_Resource</code> containing the 3D graphics context if
+   * successful or 0 if unsuccessful.
+   */
+  PP_Resource Create(
+      [in] PP_Instance instance,
+      [in] PP_Resource share_context,
+      [in] int32_t[] attrib_list);
+
+  /**
+   * IsGraphics3D() determines if the given resource is a valid
+   * <code>Graphics3D</code> context.
+   *
+   * @param[in] resource A <code>Graphics3D</code> context resource.
+   *
+   * @return PP_TRUE if the given resource is a valid <code>Graphics3D</code>,
+   * <code>PP_FALSE</code> if it is an invalid resource or is a resource of
+   * another type.
+   */
+  PP_Bool IsGraphics3D(
+      [in] PP_Resource resource);
+
+  /**
+   * GetAttribs() retrieves the value for each attribute in
+   * <code>attrib_list</code>.
+   *
+   * @param[in] context The 3D graphics context.
+   * @param[in,out] attrib_list The list of attributes that are queried.
+   * <code>attrib_list</code> has the same structure as described for
+   * <code>PPB_Graphics3D::Create</code>. It is both input and output
+   * structure for this function. All attributes specified in
+   * <code>PPB_Graphics3D::Create</code> can be queried for.
+   *
+   * @return Returns <code>PP_OK</code> on success or:
+   * - <code>PP_ERROR_BADRESOURCE</code> if context is invalid
+   * - <code>PP_ERROR_BADARGUMENT</code> if attrib_list is 0 or any attribute
+   *   in the <code>attrib_list</code> is not a valid attribute.
+   *
+   * <strong>Example usage:</strong> To get the values for rgb bits in the
+   * color buffer, this function must be called as following:
+   * <code>
+   * int attrib_list[] = {PP_GRAPHICS3DATTRIB_RED_SIZE, 0,
+   *                      PP_GRAPHICS3DATTRIB_GREEN_SIZE, 0,
+   *                      PP_GRAPHICS3DATTRIB_BLUE_SIZE, 0,
+   *                      PP_GRAPHICS3DATTRIB_NONE};
+   * GetAttribs(context, attrib_list);
+   * int red_bits = attrib_list[1];
+   * int green_bits = attrib_list[3];
+   * int blue_bits = attrib_list[5];
+   * </code>
+   */
+  int32_t GetAttribs(
+      [in] PP_Resource context,
+      [out] int32_t[] attrib_list);

[noelallen1, 2012/02/06 22:26:57]

inout not just out.  Out implies that we are allocating it.

[alokp, 2012/02/06 22:32:47]

Changing it to inout did not fix it. I still have an array of pointers.

+
+  /**
+   * SetAttribs() sets the values for each attribute in
+   * <code>attrib_list</code>.
+   *
+   * @param[in] context The 3D graphics context.
+   * @param[in] attrib_list The list of attributes whose values need to be set.
+   * <code>attrib_list</code> has the same structure as described for
+   * <code>PPB_Graphics3D::Create</code>.
+   * Attributes that can be specified are:
+   * - <code>PP_GRAPHICS3DATTRIB_SWAP_BEHAVIOR</code>
+   *
+   * @return Returns <code>PP_OK</code> on success or:
+   * - <code>PP_ERROR_BADRESOURCE</code> if <code>context</code> is invalid.
+   * - <code>PP_ERROR_BADARGUMENT</code> if <code>attrib_list</code> is 0 or
+   *   any attribute in the <code>attrib_list</code> is not a valid attribute.
+   */
+  int32_t SetAttribs(
+      [in] PP_Resource context,
+      [in] int32_t[] attrib_list);
+
+  /**
+   * GetError() returns the current state of the given 3D context.
+   *
+   * The recoverable error conditions that have no side effect are
+   * detected and returned immediately by all functions in this interface.
+   * In addition the implementation may get into a fatal state while
+   * processing a command. In this case the application must detroy the
+   * context and reinitialize client API state and objects to continue
+   * rendering.
+   *
+   * Note that the same error code is also returned in the SwapBuffers callback.
+   * It is recommended to handle error in the SwapBuffers callback because
+   * GetError is synchronous. This function may be useful in rare cases where
+   * drawing a frame is expensive and you want to verify the result of
+   * ResizeBuffers before attemptimg to draw a frame.
+   *
+   * @param[in] The 3D graphics context.
+   * @return Returns:
+   * - <code>PP_OK</code> if no error
+   * - <code>PP_ERROR_NOMEMORY</code>
+   * - <code>PP_ERROR_CONTEXT_LOST</code>
+   */
+  int32_t GetError(
+      [in] PP_Resource context);
+
+  /**
+   * ResizeBuffers() resizes the backing surface for context.
+   *
+   * If the surface could not be resized due to insufficient resources,
+   * <code>PP_ERROR_NOMEMORY</code> error is returned on the next
+   * <code>SwapBuffers</code> callback.
+   *
+   * @param[in] context The 3D graphics context.
+   * @param[in] width The width of the backing surface.
+   * @param[in] height The height of the backing surface.
+   * @return Returns <code>PP_OK</code> on success or:
+   * - <code>PP_ERROR_BADRESOURCE</code> if context is invalid.
+   * - <code>PP_ERROR_BADARGUMENT</code> if the value specified for
+   *   <code>width</code> or <code>height</code> is less than zero.
+   */
+  int32_t ResizeBuffers(
+      [in] PP_Resource context,
+      [in] int32_t width,
+      [in] int32_t height);
+
+  /**
+   * SwapBuffers() makes the contents of the color buffer available for
+   * compositing. This function has no effect on off-screen surfaces - ones not
+   * bound to any plugin instance. The contents of ancillary buffers are always
+   * undefined after calling <code>SwapBuffers</code>. The contents of the color
+   * buffer are undefined if the value of the
+   * <code>PP_GRAPHICS3DATTRIB_SWAP_BEHAVIOR</code> attribute of context is not
+   * <code>PP_GRAPHICS3DATTRIB_BUFFER_PRESERVED</code>.
+   *
+   * <code>SwapBuffers</code> runs in asynchronous mode. Specify a callback
+   * function and the argument for that callback function. The callback function
+   * will be executed on the calling thread after the color buffer has been
+   * composited with rest of the html page. While you are waiting for a
+   * SwapBuffers callback, additional calls to SwapBuffers will fail.
+   *
+   * Because the callback is executed (or thread unblocked) only when the
+   * plugin's current state is actually on the screen, this function provides a
+   * way to rate limit animations. By waiting until the image is on the screen
+   * before painting the next frame, you can ensure you're not generating
+   * updates faster than the screen can be updated.
+   *
+   * SwapBuffers performs an implicit flush operation on context.
+   * If the context gets into an unrecoverable error condition while
+   * processing a command, the error code will be returned as the argument
+   * for the callback. The callback may return the following error codes:
+   * - <code>PP_ERROR_NOMEMORY</code>
+   * - <code>PP_ERROR_CONTEXT_LOST</code>
+   * Note that the same error code may also be obtained by calling GetError.
+   *
+   * @param[in] context The 3D graphics context.
+   * @param[in] callback The callback that will executed when
+   * <code>SwapBuffers</code> completes.
+   *
+   * @return Returns PP_OK on success or:
+   * - <code>PP_ERROR_BADRESOURCE</code> if context is invalid.
+   * - <code>PP_ERROR_BADARGUMENT</code> if callback is invalid.
+   *
+   */
+  int32_t SwapBuffers(
+      [in] PP_Resource context,
+      [in] PP_CompletionCallback callback);
+};
+