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+/*
+ * Mesa 3-D graphics library
+ * Version: 7.8
+ *
+ * Copyright (C) 2009-2010 Chia-I Wu <olv@0xlab.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef _NATIVE_H_
+#define _NATIVE_H_
+
+#include "EGL/egl.h" /* for EGL native types */
+#include "GL/gl.h" /* for GL types needed by __GLcontextModes */
+#include "GL/internal/glcore.h" /* for __GLcontextModes */
+
+#include "pipe/p_compiler.h"
+#include "pipe/p_screen.h"
+#include "pipe/p_context.h"
+#include "pipe/p_state.h"
+
+/**
+ * Only color buffers are listed. The others are allocated privately through,
+ * for example, st_renderbuffer_alloc_storage().
+ */
+enum native_attachment {
+ NATIVE_ATTACHMENT_FRONT_LEFT,
+ NATIVE_ATTACHMENT_BACK_LEFT,
+ NATIVE_ATTACHMENT_FRONT_RIGHT,
+ NATIVE_ATTACHMENT_BACK_RIGHT,
+
+ NUM_NATIVE_ATTACHMENTS
+};
+
+/**
+ * Enumerations for probe results.
+ */
+enum native_probe_result {
+ NATIVE_PROBE_UNKNOWN,
+ NATIVE_PROBE_FALLBACK,
+ NATIVE_PROBE_SUPPORTED,
+ NATIVE_PROBE_EXACT,
+};
+
+/**
+ * A probe object for display probe.
+ */
+struct native_probe {
+ int magic;
+ EGLNativeDisplayType display;
+ void *data;
+
+ void (*destroy)(struct native_probe *nprobe);
+};
+
+struct native_surface {
+ void (*destroy)(struct native_surface *nsurf);
+
+ /**
+ * Swap the front and back buffers so that the back buffer is visible. It
+ * is no-op if the surface is single-buffered. The contents of the back
+ * buffer after swapping may or may not be preserved.
+ */
+ boolean (*swap_buffers)(struct native_surface *nsurf);
+
+ /**
+ * Make the front buffer visible. In some native displays, changes to the
+ * front buffer might not be visible immediately and require manual flush.
+ */
+ boolean (*flush_frontbuffer)(struct native_surface *nsurf);
+
+ /**
+ * Validate the buffers of the surface. textures, if not NULL, points to an
+ * array of size NUM_NATIVE_ATTACHMENTS and the returned textures are owned
+ * by the caller. A sequence number is also returned. The caller can use
+ * it to check if anything has changed since the last call. Any of the
+ * pointers may be NULL and it indicates the caller has no interest in those
+ * values.
+ *
+ * If this function is called multiple times with different attachment
+ * masks, those not listed in the latest call might be destroyed. This
+ * behavior might change in the future.
+ */
+ boolean (*validate)(struct native_surface *nsurf, uint attachment_mask,
+ unsigned int *seq_num, struct pipe_texture **textures,
+ int *width, int *height);
+
+ /**
+ * Wait until all native commands affecting the surface has been executed.
+ */
+ void (*wait)(struct native_surface *nsurf);
+};
+
+struct native_config {
+ /* __GLcontextModes should go away some day */
+ __GLcontextModes mode;
+ enum pipe_format color_format;
+ enum pipe_format depth_format;
+ enum pipe_format stencil_format;
+
+ /* treat it as an additional flag to mode.drawableType */
+ boolean scanout_bit;
+};
+
+struct native_connector {
+ int dummy;
+};
+
+struct native_mode {
+ const char *desc;
+ int width, height;
+ int refresh_rate;
+};
+
+struct native_display_modeset;
+
+/**
+ * A pipe winsys abstracts the OS. A pipe screen abstracts the graphcis
+ * hardware. A native display consists of a pipe winsys, a pipe screen, and
+ * the native display server.
+ */
+struct native_display {
+ /**
+ * The pipe screen of the native display.
+ *
+ * Note that the "flush_frontbuffer" and "update_buffer" callbacks will be
+ * overridden.
+ */
+ struct pipe_screen *screen;
+
+ void (*destroy)(struct native_display *ndpy);
+
+ /**
+ * Get the supported configs. The configs are owned by the display, but
+ * the returned array should be free()ed.
+ *
+ * The configs will be converted to EGL config by
+ * _eglConfigFromContextModesRec and validated by _eglValidateConfig.
+ * Those failing to pass the test will be skipped.
+ */
+ const struct native_config **(*get_configs)(struct native_display *ndpy,
+ int *num_configs);
+
+ /**
+ * Test if a pixmap is supported by the given config. Required unless no
+ * config has GLX_PIXMAP_BIT set.
+ *
+ * This function is usually called to find a config that supports a given
+ * pixmap. Thus, it is usually called with the same pixmap in a row.
+ */
+ boolean (*is_pixmap_supported)(struct native_display *ndpy,
+ EGLNativePixmapType pix,
+ const struct native_config *nconf);
+
+ /**
+ * Create a pipe context.
+ */
+ struct pipe_context *(*create_context)(struct native_display *ndpy,
+ void *context_private);
+
+ /**
+ * Create a window surface. Required unless no config has GLX_WINDOW_BIT
+ * set.
+ */
+ struct native_surface *(*create_window_surface)(struct native_display *ndpy,
+ EGLNativeWindowType win,
+ const struct native_config *nconf);
+
+ /**
+ * Create a pixmap surface. Required unless no config has GLX_PIXMAP_BIT
+ * set.
+ */
+ struct native_surface *(*create_pixmap_surface)(struct native_display *ndpy,
+ EGLNativePixmapType pix,
+ const struct native_config *nconf);
+
+ /**
+ * Create a pbuffer surface. Required unless no config has GLX_PBUFFER_BIT
+ * set.
+ */
+ struct native_surface *(*create_pbuffer_surface)(struct native_display *ndpy,
+ const struct native_config *nconf,
+ uint width, uint height);
+
+ const struct native_display_modeset *modeset;
+};
+
+/**
+ * Mode setting interface of the native display. It exposes the mode setting
+ * capabilities of the underlying graphics hardware.
+ */
+struct native_display_modeset {
+ /**
+ * Get the available physical connectors and the number of CRTCs.
+ */
+ const struct native_connector **(*get_connectors)(struct native_display *ndpy,
+ int *num_connectors,
+ int *num_crtcs);
+
+ /**
+ * Get the current supported modes of a connector. The returned modes may
+ * change every time this function is called and those from previous calls
+ * might become invalid.
+ */
+ const struct native_mode **(*get_modes)(struct native_display *ndpy,
+ const struct native_connector *nconn,
+ int *num_modes);
+
+ /**
+ * Create a scan-out surface. Required unless no config has
+ * GLX_SCREEN_BIT_MESA set.
+ */
+ struct native_surface *(*create_scanout_surface)(struct native_display *ndpy,
+ const struct native_config *nconf,
+ uint width, uint height);
+
+ /**
+ * Program the CRTC to output the surface to the given connectors with the
+ * given mode. When surface is not given, the CRTC is disabled.
+ *
+ * This interface does not export a way to query capabilities of the CRTCs.
+ * The native display usually needs to dynamically map the index to a CRTC
+ * that supports the given connectors.
+ */
+ boolean (*program)(struct native_display *ndpy, int crtc_idx,
+ struct native_surface *nsurf, uint x, uint y,
+ const struct native_connector **nconns, int num_nconns,
+ const struct native_mode *nmode);
+};
+
+/**
+ * Test whether an attachment is set in the mask.
+ */
+static INLINE boolean
+native_attachment_mask_test(uint mask, enum native_attachment att)
+{
+ return !!(mask & (1 << att));
+}
+
+/**
+ * Return a probe object for the given display.
+ *
+ * Note that the returned object may be cached and used by different native
+ * display modules. It allows fast probing when multiple modules probe the
+ * same display.
+ */
+struct native_probe *
+native_create_probe(EGLNativeDisplayType dpy);
+
+/**
+ * Probe the probe object.
+ */
+enum native_probe_result
+native_get_probe_result(struct native_probe *nprobe);
+
+const char *
+native_get_name(void);
+
+struct native_display *
+native_create_display(EGLNativeDisplayType dpy);
+
+#endif /* _NATIVE_H_ */