/*
* Mesa 3-D graphics library
*
* 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@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 "gdi/gdi_sw_winsys.h"
#include "common/native_helper.h"
#include "common/native.h"
struct gdi_display {
struct native_display base;
HDC hDC;
const 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;
struct resource_surface *rsurf;
};
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;
}
/**
* Update the geometry of the surface. This is a slow functions.
*/
static void
gdi_surface_update_geometry(struct native_surface *nsurf)
{
struct gdi_surface *gsurf = gdi_surface(nsurf);
RECT rect;
uint w, h;
GetClientRect(gsurf->hWnd, &rect);
w = rect.right - rect.left;
h = rect.bottom - rect.top;
if (resource_surface_set_size(gsurf->rsurf, w, h))
gsurf->server_stamp++;
}
/**
* Update the buffers of the surface.
*/
static boolean
gdi_surface_update_buffers(struct native_surface *nsurf, uint buffer_mask)
{
struct gdi_surface *gsurf = gdi_surface(nsurf);
if (gsurf->client_stamp != gsurf->server_stamp) {
gdi_surface_update_geometry(&gsurf->base);
gsurf->client_stamp = gsurf->server_stamp;
}
return resource_surface_add_resources(gsurf->rsurf, buffer_mask);
}
/**
* Emulate an invalidate event.
*/
static void
gdi_surface_invalidate(struct native_surface *nsurf)
{
struct gdi_surface *gsurf = gdi_surface(nsurf);
struct gdi_display *gdpy = gsurf->gdpy;
gsurf->server_stamp++;
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);
HDC hDC;
boolean ret;
hDC = GetDC(gsurf->hWnd);
ret = resource_surface_present(gsurf->rsurf,
NATIVE_ATTACHMENT_FRONT_LEFT, (void *) hDC);
ReleaseDC(gsurf->hWnd, hDC);
/* force buffers to be updated in next validation call */
gdi_surface_invalidate(&gsurf->base);
return ret;
}
static boolean
gdi_surface_swap_buffers(struct native_surface *nsurf)
{
struct gdi_surface *gsurf = gdi_surface(nsurf);
HDC hDC;
boolean ret;
hDC = GetDC(gsurf->hWnd);
ret = resource_surface_present(gsurf->rsurf,
NATIVE_ATTACHMENT_BACK_LEFT, (void *) hDC);
ReleaseDC(gsurf->hWnd, hDC);
resource_surface_swap_buffers(gsurf->rsurf,
NATIVE_ATTACHMENT_FRONT_LEFT, NATIVE_ATTACHMENT_BACK_LEFT, TRUE);
/* the front/back buffers have been swapped */
gdi_surface_invalidate(&gsurf->base);
return ret;
}
static boolean
gdi_surface_present(struct native_surface *nsurf,
const struct native_present_control *ctrl)
{
boolean ret;
if (ctrl->preserve || ctrl->swap_interval)
return FALSE;
switch (ctrl->natt) {
case NATIVE_ATTACHMENT_FRONT_LEFT:
ret = gdi_surface_flush_frontbuffer(nsurf);
break;
case NATIVE_ATTACHMENT_BACK_LEFT:
ret = gdi_surface_swap_buffers(nsurf);
break;
default:
ret = FALSE;
break;
}
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);
uint w, h;
if (!gdi_surface_update_buffers(&gsurf->base, attachment_mask))
return FALSE;
if (seq_num)
*seq_num = gsurf->client_stamp;
if (textures)
resource_surface_get_resources(gsurf->rsurf, textures, attachment_mask);
resource_surface_get_size(gsurf->rsurf, &w, &h);
if (width)
*width = w;
if (height)
*height = h;
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);
resource_surface_destroy(gsurf->rsurf);
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;
gsurf->rsurf = resource_surface_create(gdpy->base.screen,
gsurf->color_format,
PIPE_BIND_RENDER_TARGET |
PIPE_BIND_SAMPLER_VIEW |
PIPE_BIND_DISPLAY_TARGET |
PIPE_BIND_SCANOUT);
if (!gsurf->rsurf) {
FREE(gsurf);
return NULL;
}
/* initialize the geometry */
gdi_surface_update_geometry(&gsurf->base);
gsurf->base.destroy = gdi_surface_destroy;
gsurf->base.present = gdi_surface_present;
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))
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;
}
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;
case NATIVE_PARAM_PRESERVE_BUFFER:
case NATIVE_PARAM_MAX_SWAP_INTERVAL:
default:
val = 0;
break;
}
return val;
}
static void
gdi_display_destroy(struct native_display *ndpy)
{
struct gdi_display *gdpy = gdi_display(ndpy);
FREE(gdpy->configs);
ndpy_uninit(ndpy);
FREE(gdpy);
}
static boolean
gdi_display_init_screen(struct native_display *ndpy)
{
struct gdi_display *gdpy = gdi_display(ndpy);
struct sw_winsys *winsys;
winsys = gdi_create_sw_winsys();
if (!winsys)
return FALSE;
gdpy->base.screen = gdpy->event_handler->new_sw_screen(&gdpy->base, winsys);
if (!gdpy->base.screen) {
if (winsys->destroy)
winsys->destroy(winsys);
return FALSE;
}
return TRUE;
}
static struct native_display *
gdi_create_display(HDC hDC, const 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.init_screen = gdi_display_init_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 const struct native_event_handler *gdi_event_handler;
static struct native_display *
native_create_display(void *dpy, boolean use_sw)
{
return gdi_create_display((HDC) dpy, gdi_event_handler);
}
static const struct native_platform gdi_platform = {
"GDI", /* name */
native_create_display
};
const struct native_platform *
native_get_gdi_platform(const struct native_event_handler *event_handler)
{
gdi_event_handler = event_handler;
return &gdi_platform;
}