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blender-archive/source/blender/windowmanager/intern/wm_stereo.c
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C

/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2015 by Blender Foundation
* All rights reserved.
*/
/** \file
* \ingroup wm
*/
#include <stdlib.h>
#include <string.h>
#include "DNA_listBase.h"
#include "RNA_access.h"
#include "MEM_guardedalloc.h"
#include "BLI_utildefines.h"
#include "BIF_gl.h"
#include "BKE_context.h"
#include "BKE_global.h"
#include "BKE_report.h"
#include "GHOST_C-api.h"
#include "ED_screen.h"
#include "GPU_immediate.h"
#include "GPU_framebuffer.h"
#include "GPU_texture.h"
#include "WM_api.h"
#include "WM_types.h"
#include "wm.h"
#include "wm_draw.h"
#include "wm_window.h"
#include "UI_interface.h"
#include "UI_resources.h"
static eGPUInterlaceShader interlace_gpu_id_from_type(eStereo3dInterlaceType interlace_type)
{
switch (interlace_type) {
case S3D_INTERLACE_ROW:
return GPU_SHADER_INTERLACE_ROW;
case S3D_INTERLACE_COLUMN:
return GPU_SHADER_INTERLACE_COLUMN;
case S3D_INTERLACE_CHECKERBOARD:
default:
return GPU_SHADER_INTERLACE_CHECKER;
}
}
void wm_stereo3d_draw_interlace(wmWindow *win, ARegion *ar)
{
bool swap = (win->stereo3d_format->flag & S3D_INTERLACE_SWAP) != 0;
enum eStereo3dInterlaceType interlace_type = win->stereo3d_format->interlace_type;
/* wmOrtho for the screen has this same offset */
float halfx = GLA_PIXEL_OFS / ar->winx;
float halfy = GLA_PIXEL_OFS / ar->winy;
GPUVertFormat *format = immVertexFormat();
uint texcoord = GPU_vertformat_attr_add(format, "texCoord", GPU_COMP_F32, 2, GPU_FETCH_FLOAT);
uint pos = GPU_vertformat_attr_add(format, "pos", GPU_COMP_F32, 2, GPU_FETCH_FLOAT);
/* leave GL_TEXTURE0 as the latest active texture */
for (int view = 1; view >= 0; view--) {
GPUTexture *texture = wm_draw_region_texture(ar, view);
glActiveTexture(GL_TEXTURE0 + view);
glBindTexture(GL_TEXTURE_2D, GPU_texture_opengl_bindcode(texture));
}
immBindBuiltinProgram(GPU_SHADER_2D_IMAGE_INTERLACE);
immUniform1i("image_a", (swap) ? 1 : 0);
immUniform1i("image_b", (swap) ? 0 : 1);
immUniform1i("interlace_id", interlace_gpu_id_from_type(interlace_type));
immBegin(GPU_PRIM_TRI_FAN, 4);
immAttr2f(texcoord, halfx, halfy);
immVertex2f(pos, ar->winrct.xmin, ar->winrct.ymin);
immAttr2f(texcoord, 1.0f + halfx, halfy);
immVertex2f(pos, ar->winrct.xmax + 1, ar->winrct.ymin);
immAttr2f(texcoord, 1.0f + halfx, 1.0f + halfy);
immVertex2f(pos, ar->winrct.xmax + 1, ar->winrct.ymax + 1);
immAttr2f(texcoord, halfx, 1.0f + halfy);
immVertex2f(pos, ar->winrct.xmin, ar->winrct.ymax + 1);
immEnd();
immUnbindProgram();
for (int view = 1; view >= 0; view--) {
glActiveTexture(GL_TEXTURE0 + view);
glBindTexture(GL_TEXTURE_2D, 0);
}
}
void wm_stereo3d_draw_anaglyph(wmWindow *win, ARegion *ar)
{
for (int view = 0; view < 2; view ++) {
int bit = view + 1;
switch (win->stereo3d_format->anaglyph_type) {
case S3D_ANAGLYPH_REDCYAN:
glColorMask((1&bit) ? GL_TRUE : GL_FALSE,
(2&bit) ? GL_TRUE : GL_FALSE,
(2&bit) ? GL_TRUE : GL_FALSE,
GL_FALSE);
break;
case S3D_ANAGLYPH_GREENMAGENTA:
glColorMask((2&bit) ? GL_TRUE : GL_FALSE,
(1&bit) ? GL_TRUE : GL_FALSE,
(2&bit) ? GL_TRUE : GL_FALSE,
GL_FALSE);
break;
case S3D_ANAGLYPH_YELLOWBLUE:
glColorMask((1&bit) ? GL_TRUE : GL_FALSE,
(1&bit) ? GL_TRUE : GL_FALSE,
(2&bit) ? GL_TRUE : GL_FALSE,
GL_FALSE);
break;
}
wm_draw_region_blend(ar, view, false);
}
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
}
void wm_stereo3d_draw_sidebyside(wmWindow *win, int view)
{
bool cross_eyed = (win->stereo3d_format->flag & S3D_SIDEBYSIDE_CROSSEYED) != 0;
GPUVertFormat *format = immVertexFormat();
uint texcoord = GPU_vertformat_attr_add(format, "texCoord", GPU_COMP_F32, 2, GPU_FETCH_FLOAT);
uint pos = GPU_vertformat_attr_add(format, "pos", GPU_COMP_F32, 2, GPU_FETCH_FLOAT);
immBindBuiltinProgram(GPU_SHADER_2D_IMAGE);
int soffx = WM_window_pixels_x(win) * 0.5f;
if (view == STEREO_LEFT_ID) {
if (!cross_eyed)
soffx = 0;
}
else { //RIGHT_LEFT_ID
if (cross_eyed)
soffx = 0;
}
const int sizex = WM_window_pixels_x(win);
const int sizey = WM_window_pixels_y(win);
/* wmOrtho for the screen has this same offset */
const float halfx = GLA_PIXEL_OFS / sizex;
const float halfy = GLA_PIXEL_OFS / sizex;
immUniform1i("image", 0); /* texture is already bound to GL_TEXTURE0 unit */
immBegin(GPU_PRIM_TRI_FAN, 4);
immAttr2f(texcoord, halfx, halfy);
immVertex2f(pos, soffx, 0.0f);
immAttr2f(texcoord, 1.0f + halfx, halfy);
immVertex2f(pos, soffx + (sizex * 0.5f), 0.0f);
immAttr2f(texcoord, 1.0f + halfx, 1.0f + halfy);
immVertex2f(pos, soffx + (sizex * 0.5f), sizey);
immAttr2f(texcoord, halfx, 1.0f + halfy);
immVertex2f(pos, soffx, sizey);
immEnd();
immUnbindProgram();
}
void wm_stereo3d_draw_topbottom(wmWindow *win, int view)
{
GPUVertFormat *format = immVertexFormat();
uint texcoord = GPU_vertformat_attr_add(format, "texCoord", GPU_COMP_F32, 2, GPU_FETCH_FLOAT);
uint pos = GPU_vertformat_attr_add(format, "pos", GPU_COMP_F32, 2, GPU_FETCH_FLOAT);
immBindBuiltinProgram(GPU_SHADER_2D_IMAGE);
int soffy;
if (view == STEREO_LEFT_ID) {
soffy = WM_window_pixels_y(win) * 0.5f;
}
else { /* STEREO_RIGHT_ID */
soffy = 0;
}
const int sizex = WM_window_pixels_x(win);
const int sizey = WM_window_pixels_y(win);
/* wmOrtho for the screen has this same offset */
const float halfx = GLA_PIXEL_OFS / sizex;
const float halfy = GLA_PIXEL_OFS / sizex;
immUniform1i("image", 0); /* texture is already bound to GL_TEXTURE0 unit */
immBegin(GPU_PRIM_TRI_FAN, 4);
immAttr2f(texcoord, halfx, halfy);
immVertex2f(pos, 0.0f, soffy);
immAttr2f(texcoord, 1.0f + halfx, halfy);
immVertex2f(pos, sizex, soffy);
immAttr2f(texcoord, 1.0f + halfx, 1.0f + halfy);
immVertex2f(pos, sizex, soffy + (sizey * 0.5f));
immAttr2f(texcoord, halfx, 1.0f + halfy);
immVertex2f(pos, 0.0f, soffy + (sizey * 0.5f));
immEnd();
immUnbindProgram();
}
static bool wm_stereo3d_quadbuffer_supported(void)
{
GLboolean stereo = GL_FALSE;
glGetBooleanv(GL_STEREO, &stereo);
return stereo == GL_TRUE;
}
static bool wm_stereo3d_is_fullscreen_required(eStereoDisplayMode stereo_display)
{
return ELEM(stereo_display,
S3D_DISPLAY_SIDEBYSIDE,
S3D_DISPLAY_TOPBOTTOM);
}
bool WM_stereo3d_enabled(wmWindow *win, bool skip_stereo3d_check)
{
const bScreen *screen = WM_window_get_active_screen(win);
const Scene *scene = WM_window_get_active_scene(win);
/* some 3d methods change the window arrangement, thus they shouldn't
* toggle on/off just because there is no 3d elements being drawn */
if (wm_stereo3d_is_fullscreen_required(win->stereo3d_format->display_mode)) {
return GHOST_GetWindowState(win->ghostwin) == GHOST_kWindowStateFullScreen;
}
if ((skip_stereo3d_check == false) && (ED_screen_stereo3d_required(screen, scene) == false)) {
return false;
}
/* some 3d methods change the window arrangement, thus they shouldn't
* toggle on/off just because there is no 3d elements being drawn */
if (wm_stereo3d_is_fullscreen_required(win->stereo3d_format->display_mode)) {
return GHOST_GetWindowState(win->ghostwin) == GHOST_kWindowStateFullScreen;
}
return true;
}
/**
* If needed, this adjusts \a r_mouse_xy so that drawn cursor and handled mouse position are matching visually.
*/
void wm_stereo3d_mouse_offset_apply(wmWindow *win, int *r_mouse_xy)
{
if (!WM_stereo3d_enabled(win, false))
return;
if (win->stereo3d_format->display_mode == S3D_DISPLAY_SIDEBYSIDE) {
const int half_x = win->sizex / 2;
/* right half of the screen */
if (r_mouse_xy[0] > half_x) {
r_mouse_xy[0] -= half_x;
}
r_mouse_xy[0] *= 2;
}
else if (win->stereo3d_format->display_mode == S3D_DISPLAY_TOPBOTTOM) {
const int half_y = win->sizey / 2;
/* upper half of the screen */
if (r_mouse_xy[1] > half_y) {
r_mouse_xy[1] -= half_y;
}
r_mouse_xy[1] *= 2;
}
}
/************************** Stereo 3D operator **********************************/
typedef struct Stereo3dData {
Stereo3dFormat stereo3d_format;
} Stereo3dData;
static bool wm_stereo3d_set_properties(bContext *UNUSED(C), wmOperator *op)
{
Stereo3dData *s3dd = op->customdata;
Stereo3dFormat *s3d = &s3dd->stereo3d_format;
PropertyRNA *prop;
bool is_set = false;
prop = RNA_struct_find_property(op->ptr, "display_mode");
if (RNA_property_is_set(op->ptr, prop)) {
s3d->display_mode = RNA_property_enum_get(op->ptr, prop);
is_set = true;
}
prop = RNA_struct_find_property(op->ptr, "anaglyph_type");
if (RNA_property_is_set(op->ptr, prop)) {
s3d->anaglyph_type = RNA_property_enum_get(op->ptr, prop);
is_set = true;
}
prop = RNA_struct_find_property(op->ptr, "interlace_type");
if (RNA_property_is_set(op->ptr, prop)) {
s3d->interlace_type = RNA_property_enum_get(op->ptr, prop);
is_set = true;
}
prop = RNA_struct_find_property(op->ptr, "use_interlace_swap");
if (RNA_property_is_set(op->ptr, prop)) {
if (RNA_property_boolean_get(op->ptr, prop))
s3d->flag |= S3D_INTERLACE_SWAP;
else
s3d->flag &= ~S3D_INTERLACE_SWAP;
is_set = true;
}
prop = RNA_struct_find_property(op->ptr, "use_sidebyside_crosseyed");
if (RNA_property_is_set(op->ptr, prop)) {
if (RNA_property_boolean_get(op->ptr, prop))
s3d->flag |= S3D_SIDEBYSIDE_CROSSEYED;
else
s3d->flag &= ~S3D_SIDEBYSIDE_CROSSEYED;
is_set = true;
}
return is_set;
}
static void wm_stereo3d_set_init(bContext *C, wmOperator *op)
{
Stereo3dData *s3dd;
wmWindow *win = CTX_wm_window(C);
op->customdata = s3dd = MEM_callocN(sizeof(Stereo3dData), __func__);
/* store the original win stereo 3d settings in case of cancel */
s3dd->stereo3d_format = *win->stereo3d_format;
}
int wm_stereo3d_set_exec(bContext *C, wmOperator *op)
{
wmWindowManager *wm = CTX_wm_manager(C);
wmWindow *win_src = CTX_wm_window(C);
wmWindow *win_dst = NULL;
const bool is_fullscreen = WM_window_is_fullscreen(win_src);
char prev_display_mode = win_src->stereo3d_format->display_mode;
Stereo3dData *s3dd;
bool ok = true;
if (G.background)
return OPERATOR_CANCELLED;
if (op->customdata == NULL) {
/* no invoke means we need to set the operator properties here */
wm_stereo3d_set_init(C, op);
wm_stereo3d_set_properties(C, op);
}
s3dd = op->customdata;
*win_src->stereo3d_format = s3dd->stereo3d_format;
if (prev_display_mode == S3D_DISPLAY_PAGEFLIP &&
prev_display_mode != win_src->stereo3d_format->display_mode)
{
/* in case the hardware supports pageflip but not the display */
if ((win_dst = wm_window_copy_test(C, win_src, false, false))) {
/* pass */
}
else {
BKE_report(op->reports, RPT_ERROR,
"Failed to create a window without quad-buffer support, you may experience flickering");
ok = false;
}
}
else if (win_src->stereo3d_format->display_mode == S3D_DISPLAY_PAGEFLIP) {
const bScreen *screen = WM_window_get_active_screen(win_src);
/* ED_workspace_layout_duplicate() can't handle other cases yet T44688 */
if (screen->state != SCREENNORMAL) {
BKE_report(op->reports, RPT_ERROR,
"Failed to switch to Time Sequential mode when in fullscreen");
ok = false;
}
/* pageflip requires a new window to be created with the proper OS flags */
else if ((win_dst = wm_window_copy_test(C, win_src, false, false))) {
if (wm_stereo3d_quadbuffer_supported()) {
BKE_report(op->reports, RPT_INFO, "Quad-buffer window successfully created");
}
else {
wm_window_close(C, wm, win_dst);
win_dst = NULL;
BKE_report(op->reports, RPT_ERROR, "Quad-buffer not supported by the system");
ok = false;
}
}
else {
BKE_report(op->reports, RPT_ERROR,
"Failed to create a window compatible with the time sequential display method");
ok = false;
}
}
if (wm_stereo3d_is_fullscreen_required(s3dd->stereo3d_format.display_mode)) {
if (!is_fullscreen) {
BKE_report(op->reports, RPT_INFO, "Stereo 3D Mode requires the window to be fullscreen");
}
}
MEM_freeN(op->customdata);
if (ok) {
if (win_dst) {
wm_window_close(C, wm, win_src);
}
WM_event_add_notifier(C, NC_WINDOW, NULL);
return OPERATOR_FINISHED;
}
else {
/* without this, the popup won't be freed freed properly T44688 */
CTX_wm_window_set(C, win_src);
win_src->stereo3d_format->display_mode = prev_display_mode;
return OPERATOR_CANCELLED;
}
}
int wm_stereo3d_set_invoke(bContext *C, wmOperator *op, const wmEvent *UNUSED(event))
{
wm_stereo3d_set_init(C, op);
if (wm_stereo3d_set_properties(C, op))
return wm_stereo3d_set_exec(C, op);
else
return WM_operator_props_dialog_popup(C, op, 250, 100);
}
void wm_stereo3d_set_draw(bContext *UNUSED(C), wmOperator *op)
{
Stereo3dData *s3dd = op->customdata;
PointerRNA stereo3d_format_ptr;
uiLayout *layout = op->layout;
uiLayout *col;
RNA_pointer_create(NULL, &RNA_Stereo3dDisplay, &s3dd->stereo3d_format, &stereo3d_format_ptr);
col = uiLayoutColumn(layout, false);
uiItemR(col, &stereo3d_format_ptr, "display_mode", 0, NULL, ICON_NONE);
switch (s3dd->stereo3d_format.display_mode) {
case S3D_DISPLAY_ANAGLYPH:
{
uiItemR(col, &stereo3d_format_ptr, "anaglyph_type", 0, NULL, ICON_NONE);
break;
}
case S3D_DISPLAY_INTERLACE:
{
uiItemR(col, &stereo3d_format_ptr, "interlace_type", 0, NULL, ICON_NONE);
uiItemR(col, &stereo3d_format_ptr, "use_interlace_swap", 0, NULL, ICON_NONE);
break;
}
case S3D_DISPLAY_SIDEBYSIDE:
{
uiItemR(col, &stereo3d_format_ptr, "use_sidebyside_crosseyed", 0, NULL, ICON_NONE);
/* fall-through */
}
case S3D_DISPLAY_PAGEFLIP:
case S3D_DISPLAY_TOPBOTTOM:
default:
{
break;
}
}
}
bool wm_stereo3d_set_check(bContext *UNUSED(C), wmOperator *UNUSED(op))
{
/* the check function guarantees that the menu is updated to show the
* sub-options when an enum change (e.g., it shows the anaglyph options
* when anaglyph is on, and the interlace options when this is on */
return true;
}
void wm_stereo3d_set_cancel(bContext *UNUSED(C), wmOperator *op)
{
MEM_freeN(op->customdata);
op->customdata = NULL;
}