Mesa (master): st/egl: Add GDI backend.
Chia-I Wu
olv at kemper.freedesktop.org
Mon May 31 05:28:55 UTC 2010
Module: Mesa
Branch: master
Commit: a8e195ec24dc244d975cbd3526debc2c22e717be
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=a8e195ec24dc244d975cbd3526debc2c22e717be
Author: Chia-I Wu <olv at lunarg.com>
Date: Mon May 31 12:03:39 2010 +0800
st/egl: Add GDI backend.
The backend uses Windows GDI driver to provide a software EGL
implementation on Windows.
---
src/gallium/SConscript | 1 +
src/gallium/state_trackers/egl/SConscript | 31 ++
src/gallium/state_trackers/egl/common/egl_g3d.c | 2 +-
src/gallium/state_trackers/egl/gdi/native_gdi.c | 524 +++++++++++++++++++++++
4 files changed, 557 insertions(+), 1 deletions(-)
diff --git a/src/gallium/SConscript b/src/gallium/SConscript
index e5e9578..f47907e 100644
--- a/src/gallium/SConscript
+++ b/src/gallium/SConscript
@@ -15,6 +15,7 @@ if platform != 'embedded':
SConscript('state_trackers/glx/xlib/SConscript')
SConscript('state_trackers/dri/SConscript')
SConscript('state_trackers/xorg/SConscript')
+ SConscript('state_trackers/egl/SConscript')
if platform == 'windows':
SConscript('state_trackers/wgl/SConscript')
diff --git a/src/gallium/state_trackers/egl/SConscript b/src/gallium/state_trackers/egl/SConscript
new file mode 100644
index 0000000..855bc5b
--- /dev/null
+++ b/src/gallium/state_trackers/egl/SConscript
@@ -0,0 +1,31 @@
+#######################################################################
+# SConscript for egl state_tracker
+
+Import('*')
+
+if 'egl' in env['statetrackers']:
+
+ env = env.Clone()
+
+ env.Append(CPPPATH = [
+ '#/src/egl/main',
+ '#/src/gallium/winsys/sw',
+ '.',
+ ])
+
+ common_sources = [
+ 'common/egl_g3d.c',
+ 'common/egl_g3d_api.c',
+ 'common/egl_g3d_image.c',
+ 'common/egl_g3d_st.c',
+ ]
+
+ gdi_sources = common_sources + [
+ 'gdi/native_gdi.c',
+ ]
+
+ st_egl_gdi = env.ConvenienceLibrary(
+ target = 'st_egl_gdi',
+ source = gdi_sources,
+ )
+ Export('st_egl_gdi')
diff --git a/src/gallium/state_trackers/egl/common/egl_g3d.c b/src/gallium/state_trackers/egl/common/egl_g3d.c
index d63b81a..361cc79 100644
--- a/src/gallium/state_trackers/egl/common/egl_g3d.c
+++ b/src/gallium/state_trackers/egl/common/egl_g3d.c
@@ -426,7 +426,7 @@ egl_g3d_invalid_surface(struct native_display *ndpy,
}
static struct native_event_handler egl_g3d_native_event_handler = {
- .invalid_surface = egl_g3d_invalid_surface
+ egl_g3d_invalid_surface
};
static EGLBoolean
diff --git a/src/gallium/state_trackers/egl/gdi/native_gdi.c b/src/gallium/state_trackers/egl/gdi/native_gdi.c
new file mode 100644
index 0000000..b111ce1
--- /dev/null
+++ b/src/gallium/state_trackers/egl/gdi/native_gdi.c
@@ -0,0 +1,524 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 7.9
+ *
+ * Copyright (C) 2010 LunarG Inc.
+ *
+ * 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
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.
+ *
+ * Authors:
+ * Chia-I Wu <olv at lunarg.com>
+ */
+
+#include <windows.h>
+
+#include "pipe/p_compiler.h"
+#include "util/u_memory.h"
+#include "util/u_format.h"
+#include "util/u_inlines.h"
+#include "target-helpers/wrap_screen.h"
+#include "llvmpipe/lp_public.h"
+#include "softpipe/sp_public.h"
+#include "gdi/gdi_sw_winsys.h"
+
+#include "common/native.h"
+
+struct gdi_display {
+ struct native_display base;
+
+ HDC hDC;
+ struct native_event_handler *event_handler;
+
+ struct native_config *configs;
+ int num_configs;
+};
+
+struct gdi_surface {
+ struct native_surface base;
+
+ HWND hWnd;
+ enum pipe_format color_format;
+
+ struct gdi_display *gdpy;
+
+ unsigned int server_stamp;
+ unsigned int client_stamp;
+ int width, height;
+ uint valid_mask;
+
+ struct pipe_resource *resources[NUM_NATIVE_ATTACHMENTS];
+ struct pipe_surface *present_surface;
+};
+
+static INLINE struct gdi_display *
+gdi_display(const struct native_display *ndpy)
+{
+ return (struct gdi_display *) ndpy;
+}
+
+static INLINE struct gdi_surface *
+gdi_surface(const struct native_surface *nsurf)
+{
+ return (struct gdi_surface *) nsurf;
+}
+
+static boolean
+gdi_surface_alloc_buffer(struct native_surface *nsurf,
+ enum native_attachment which)
+{
+ struct gdi_surface *gsurf = gdi_surface(nsurf);
+ struct pipe_screen *screen = gsurf->gdpy->base.screen;
+ struct pipe_resource templ;
+
+ pipe_resource_reference(&gsurf->resources[which], NULL);
+
+ memset(&templ, 0, sizeof(templ));
+ templ.target = PIPE_TEXTURE_2D;
+ templ.format = gsurf->color_format;
+ templ.width0 = gsurf->width;
+ templ.height0 = gsurf->height;
+ templ.depth0 = 1;
+ templ.bind = PIPE_BIND_RENDER_TARGET |
+ PIPE_BIND_SCANOUT |
+ PIPE_BIND_DISPLAY_TARGET;
+
+ gsurf->resources[which] = screen->resource_create(screen, &templ);
+
+ return (gsurf->resources[which] != NULL);
+}
+
+/**
+ * Update the geometry of the surface. Return TRUE if the geometry has changed
+ * since last call.
+ */
+static boolean
+gdi_surface_update_geometry(struct native_surface *nsurf)
+{
+ struct gdi_surface *gsurf = gdi_surface(nsurf);
+ RECT rect;
+ unsigned int w, h;
+ boolean updated = FALSE;
+
+ GetClientRect(gsurf->hWnd, &rect);
+ w = rect.right - rect.left;
+ h = rect.bottom - rect.top;
+
+ if (gsurf->width != w || gsurf->height != h) {
+ gsurf->width = w;
+ gsurf->height = h;
+
+ gsurf->server_stamp++;
+ updated = TRUE;
+ }
+
+ return updated;
+}
+
+/**
+ * Update the buffers of the surface. It is a slow function due to the
+ * round-trip to the server.
+ */
+static boolean
+gdi_surface_update_buffers(struct native_surface *nsurf, uint buffer_mask)
+{
+ struct gdi_surface *gsurf = gdi_surface(nsurf);
+ boolean updated;
+ uint new_valid;
+ int att;
+
+ updated = gdi_surface_update_geometry(&gsurf->base);
+ if (updated) {
+ /* all buffers become invalid */
+ gsurf->valid_mask = 0x0;
+ }
+ else {
+ buffer_mask &= ~gsurf->valid_mask;
+ /* all requested buffers are valid */
+ if (!buffer_mask) {
+ gsurf->client_stamp = gsurf->server_stamp;
+ return TRUE;
+ }
+ }
+
+ new_valid = 0x0;
+ for (att = 0; att < NUM_NATIVE_ATTACHMENTS; att++) {
+ if (native_attachment_mask_test(buffer_mask, att)) {
+ /* reallocate the texture */
+ if (!gdi_surface_alloc_buffer(&gsurf->base, att))
+ break;
+
+ new_valid |= (1 << att);
+ if (buffer_mask == new_valid)
+ break;
+ }
+ }
+
+ gsurf->valid_mask |= new_valid;
+ gsurf->client_stamp = gsurf->server_stamp;
+
+ return (new_valid == buffer_mask);
+}
+
+static boolean
+gdi_surface_present(struct native_surface *nsurf,
+ enum native_attachment which)
+{
+ struct gdi_surface *gsurf = gdi_surface(nsurf);
+ struct pipe_screen *screen = gsurf->gdpy->base.screen;
+ struct pipe_resource *pres = gsurf->resources[which];
+ struct pipe_surface *psurf;
+ HDC hDC;
+
+ if (!pres)
+ return TRUE;
+
+ psurf = gsurf->present_surface;
+ if (!psurf || psurf->texture != pres) {
+ pipe_surface_reference(&gsurf->present_surface, NULL);
+
+ psurf = screen->get_tex_surface(screen, pres,
+ 0, 0, 0, PIPE_BIND_DISPLAY_TARGET);
+ if (!psurf)
+ return FALSE;
+
+ gsurf->present_surface = psurf;
+ }
+
+ hDC = GetDC(gsurf->hWnd);
+ screen->flush_frontbuffer(screen, psurf, (void *) hDC);
+ ReleaseDC(gsurf->hWnd, hDC);
+
+ return TRUE;
+}
+
+static void
+gdi_surface_notify_invalid(struct native_surface *nsurf)
+{
+ struct gdi_surface *gsurf = gdi_surface(nsurf);
+ struct gdi_display *gdpy = gsurf->gdpy;
+
+ gdpy->event_handler->invalid_surface(&gdpy->base,
+ &gsurf->base, gsurf->server_stamp);
+}
+
+static boolean
+gdi_surface_flush_frontbuffer(struct native_surface *nsurf)
+{
+ struct gdi_surface *gsurf = gdi_surface(nsurf);
+ boolean ret;
+
+ ret = gdi_surface_present(&gsurf->base, NATIVE_ATTACHMENT_FRONT_LEFT);
+ /* force buffers to be updated in next validation call */
+ gsurf->server_stamp++;
+ gdi_surface_notify_invalid(&gsurf->base);
+
+ return ret;
+}
+
+static boolean
+gdi_surface_swap_buffers(struct native_surface *nsurf)
+{
+ struct gdi_surface *gsurf = gdi_surface(nsurf);
+ struct pipe_resource **front, **back, *tmp;
+ boolean ret;
+
+ /* display the back buffer first */
+ ret = gdi_surface_present(&gsurf->base, NATIVE_ATTACHMENT_BACK_LEFT);
+ /* force buffers to be updated in next validation call */
+ gsurf->server_stamp++;
+ gdi_surface_notify_invalid(&gsurf->base);
+
+ front = &gsurf->resources[NATIVE_ATTACHMENT_FRONT_LEFT];
+ back = &gsurf->resources[NATIVE_ATTACHMENT_BACK_LEFT];
+
+ /* skip swapping unless there is a front buffer */
+ if (*front) {
+ tmp = *front;
+ *front = *back;
+ *back = tmp;
+ }
+
+ return ret;
+}
+
+static boolean
+gdi_surface_validate(struct native_surface *nsurf, uint attachment_mask,
+ unsigned int *seq_num, struct pipe_resource **textures,
+ int *width, int *height)
+{
+ struct gdi_surface *gsurf = gdi_surface(nsurf);
+
+ if (gsurf->client_stamp != gsurf->server_stamp ||
+ (gsurf->valid_mask & attachment_mask) != attachment_mask) {
+ if (!gdi_surface_update_buffers(&gsurf->base, attachment_mask))
+ return FALSE;
+ }
+
+ if (seq_num)
+ *seq_num = gsurf->client_stamp;
+
+ if (textures) {
+ int att;
+ for (att = 0; att < NUM_NATIVE_ATTACHMENTS; att++) {
+ if (native_attachment_mask_test(attachment_mask, att)) {
+ textures[att] = NULL;
+ pipe_resource_reference(&textures[att], gsurf->resources[att]);
+ }
+ }
+ }
+
+ if (width)
+ *width = gsurf->width;
+ if (height)
+ *height = gsurf->height;
+
+ return TRUE;
+}
+
+static void
+gdi_surface_wait(struct native_surface *nsurf)
+{
+ /* no-op */
+}
+
+static void
+gdi_surface_destroy(struct native_surface *nsurf)
+{
+ struct gdi_surface *gsurf = gdi_surface(nsurf);
+ int i;
+
+ pipe_surface_reference(&gsurf->present_surface, NULL);
+
+ for (i = 0; i < NUM_NATIVE_ATTACHMENTS; i++)
+ pipe_resource_reference(&gsurf->resources[i], NULL);
+
+ FREE(gsurf);
+}
+
+static struct native_surface *
+gdi_display_create_window_surface(struct native_display *ndpy,
+ EGLNativeWindowType win,
+ const struct native_config *nconf)
+{
+ struct gdi_display *gdpy = gdi_display(ndpy);
+ struct gdi_surface *gsurf;
+
+ gsurf = CALLOC_STRUCT(gdi_surface);
+ if (!gsurf)
+ return NULL;
+
+ gsurf->gdpy = gdpy;
+ gsurf->color_format = nconf->color_format;
+ gsurf->hWnd = (HWND) win;
+
+ /* initialize the geometry */
+ gdi_surface_update_buffers(&gsurf->base, 0x0);
+
+ gsurf->base.destroy = gdi_surface_destroy;
+ gsurf->base.swap_buffers = gdi_surface_swap_buffers;
+ gsurf->base.flush_frontbuffer = gdi_surface_flush_frontbuffer;
+ gsurf->base.validate = gdi_surface_validate;
+ gsurf->base.wait = gdi_surface_wait;
+
+ return &gsurf->base;
+}
+
+static int
+fill_color_formats(struct native_display *ndpy, enum pipe_format formats[8])
+{
+ struct pipe_screen *screen = ndpy->screen;
+ int i, count = 0;
+
+ enum pipe_format candidates[] = {
+ /* 32-bit */
+ PIPE_FORMAT_B8G8R8A8_UNORM,
+ PIPE_FORMAT_A8R8G8B8_UNORM,
+ /* 24-bit */
+ PIPE_FORMAT_B8G8R8X8_UNORM,
+ PIPE_FORMAT_X8R8G8B8_UNORM,
+ /* 16-bit */
+ PIPE_FORMAT_B5G6R5_UNORM
+ };
+
+ assert(Elements(candidates) <= 8);
+
+ for (i = 0; i < Elements(candidates); i++) {
+ if (screen->is_format_supported(screen, candidates[i],
+ PIPE_TEXTURE_2D, 0, PIPE_BIND_RENDER_TARGET, 0))
+ formats[count++] = candidates[i];
+ }
+
+ return count;
+}
+
+static const struct native_config **
+gdi_display_get_configs(struct native_display *ndpy, int *num_configs)
+{
+ struct gdi_display *gdpy = gdi_display(ndpy);
+ const struct native_config **configs;
+ int i;
+
+ /* first time */
+ if (!gdpy->configs) {
+ enum pipe_format formats[8];
+ int i, count;
+
+ count = fill_color_formats(&gdpy->base, formats);
+
+ gdpy->configs = CALLOC(count, sizeof(*gdpy->configs));
+ if (!gdpy->configs)
+ return NULL;
+
+ for (i = 0; i < count; i++) {
+ struct native_config *nconf = &gdpy->configs[i];
+
+ nconf->buffer_mask =
+ (1 << NATIVE_ATTACHMENT_FRONT_LEFT) |
+ (1 << NATIVE_ATTACHMENT_BACK_LEFT);
+ nconf->color_format = formats[i];
+
+ nconf->window_bit = TRUE;
+ nconf->slow_config = TRUE;
+ }
+
+ gdpy->num_configs = count;
+ }
+
+ configs = MALLOC(gdpy->num_configs * sizeof(*configs));
+ if (configs) {
+ for (i = 0; i < gdpy->num_configs; i++)
+ configs[i] = (const struct native_config *) &gdpy->configs[i];
+ if (num_configs)
+ *num_configs = gdpy->num_configs;
+ }
+ return configs;
+}
+
+static int
+gdi_display_get_param(struct native_display *ndpy,
+ enum native_param_type param)
+{
+ int val;
+
+ switch (param) {
+ case NATIVE_PARAM_USE_NATIVE_BUFFER:
+ /* private buffers are allocated */
+ val = FALSE;
+ break;
+ default:
+ val = 0;
+ break;
+ }
+
+ return val;
+}
+
+static void
+gdi_display_destroy(struct native_display *ndpy)
+{
+ struct gdi_display *gdpy = gdi_display(ndpy);
+
+ if (gdpy->configs)
+ FREE(gdpy->configs);
+
+ gdpy->base.screen->destroy(gdpy->base.screen);
+
+ FREE(gdpy);
+}
+
+static struct native_display *
+gdi_create_display(HDC hDC, struct pipe_screen *screen,
+ struct native_event_handler *event_handler)
+{
+ struct gdi_display *gdpy;
+
+ gdpy = CALLOC_STRUCT(gdi_display);
+ if (!gdpy)
+ return NULL;
+
+ gdpy->hDC = hDC;
+ gdpy->event_handler = event_handler;
+
+ gdpy->base.screen = screen;
+
+ gdpy->base.destroy = gdi_display_destroy;
+ gdpy->base.get_param = gdi_display_get_param;
+
+ gdpy->base.get_configs = gdi_display_get_configs;
+ gdpy->base.create_window_surface = gdi_display_create_window_surface;
+
+ return &gdpy->base;
+}
+
+static struct pipe_screen *
+gdi_create_screen(void)
+{
+ struct sw_winsys *winsys;
+ struct pipe_screen *screen = NULL;
+
+ winsys = gdi_create_sw_winsys();
+ if (!winsys)
+ return NULL;
+
+#if defined(GALLIUM_LLVMPIPE)
+ if (!screen && !debug_get_bool_option("GALLIUM_NO_LLVM", FALSE))
+ screen = llvmpipe_create_screen(winsys);
+#endif
+ if (!screen)
+ screen = softpipe_create_screen(winsys);
+
+ if (!screen) {
+ if (winsys->destroy)
+ winsys->destroy(winsys);
+ return NULL;
+ }
+
+ return gallium_wrap_screen(screen);
+}
+
+struct native_probe *
+native_create_probe(EGLNativeDisplayType dpy)
+{
+ return NULL;
+}
+
+enum native_probe_result
+native_get_probe_result(struct native_probe *nprobe)
+{
+ return NATIVE_PROBE_UNKNOWN;
+}
+
+const char *
+native_get_name(void)
+{
+ return "GDI";
+}
+
+struct native_display *
+native_create_display(EGLNativeDisplayType dpy,
+ struct native_event_handler *event_handler)
+{
+ struct pipe_screen *screen;
+
+ screen = gdi_create_screen();
+ if (!screen)
+ return NULL;
+
+ return gdi_create_display((HDC) dpy, screen, event_handler);
+}
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