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/*
* 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.
*
* Copyright 2020, Blender Foundation.
*/
/** \file
* \ingroup draw_engine
*/
#include "DRW_render.h"
#include "UI_resources.h"
#include "draw_manager_text.h"
#include "overlay_private.h"
#define BG_SOLID 0
#define BG_GRADIENT 1
#define BG_CHECKER 2
#define BG_RADIAL 3
#define BG_SOLID_CHECKER 4
void OVERLAY_background_cache_init(OVERLAY_Data *vedata)
{
OVERLAY_PassList *psl = vedata->psl;
OVERLAY_PrivateData *pd = vedata->stl->pd;
DefaultTextureList *dtxl = DRW_viewport_texture_list_get();
const DRWContextState *draw_ctx = DRW_context_state_get();
const Scene *scene = draw_ctx->scene;
const RegionView3D *rv3d = draw_ctx->rv3d;
const BoundBox *bb = rv3d ? rv3d->clipbb : NULL;
const View3D *v3d = draw_ctx->v3d;
bool draw_clipping_bounds = (pd->clipping_state != 0);
{
float color_override[4] = {0.0f, 0.0f, 0.0f, 0.0f};
int background_type;
if (DRW_state_is_opengl_render() && !DRW_state_draw_background()) {
background_type = BG_SOLID;
color_override[3] = 1.0f;
}
else if (pd->is_image_editor) {
background_type = BG_SOLID_CHECKER;
}
else if (!DRW_state_draw_background()) {
background_type = BG_CHECKER;
}
else if (v3d->shading.background_type == V3D_SHADING_BACKGROUND_WORLD && scene->world) {
background_type = BG_SOLID;
/* TODO(fclem): this is a scene referred linear color. we should convert
* it to display linear here. */
copy_v3_v3(color_override, &scene->world->horr);
color_override[3] = 1.0f;
}
else if (v3d->shading.background_type == V3D_SHADING_BACKGROUND_VIEWPORT &&
v3d->shading.type <= OB_SOLID) {
background_type = BG_SOLID;
copy_v3_v3(color_override, v3d->shading.background_color);
color_override[3] = 1.0f;
}
else {
switch (UI_GetThemeValue(TH_BACKGROUND_TYPE)) {
case TH_BACKGROUND_GRADIENT_LINEAR:
background_type = BG_GRADIENT;
break;
case TH_BACKGROUND_GRADIENT_RADIAL:
background_type = BG_RADIAL;
break;
default:
case TH_BACKGROUND_SINGLE_COLOR:
background_type = BG_SOLID;
break;
}
}
DRWState state = DRW_STATE_WRITE_COLOR | DRW_STATE_BLEND_BACKGROUND;
DRW_PASS_CREATE(psl->background_ps, state);
GPUShader *sh = OVERLAY_shader_background();
DRWShadingGroup *grp = DRW_shgroup_create(sh, psl->background_ps);
DRW_shgroup_uniform_block(grp, "globalsBlock", G_draw.block_ubo);
DRW_shgroup_uniform_texture_ref(grp, "colorBuffer", &dtxl->color);
DRW_shgroup_uniform_texture_ref(grp, "depthBuffer", &dtxl->depth);
DRW_shgroup_uniform_vec4_copy(grp, "colorOverride", color_override);
DRW_shgroup_uniform_int_copy(grp, "bgType", background_type);
DRW_shgroup_call_procedural_triangles(grp, NULL, 1);
}
if (draw_clipping_bounds) {
DRWState state = DRW_STATE_WRITE_COLOR | DRW_STATE_BLEND_ALPHA | DRW_STATE_CULL_BACK;
DRW_PASS_CREATE(psl->clipping_frustum_ps, state);
GPUShader *sh = OVERLAY_shader_clipbound();
DRWShadingGroup *grp = DRW_shgroup_create(sh, psl->clipping_frustum_ps);
DRW_shgroup_uniform_vec4_copy(grp, "color", G_draw.block.colorClippingBorder);
DRW_shgroup_uniform_vec3(grp, "boundbox", &bb->vec[0][0], 8);
struct GPUBatch *cube = DRW_cache_cube_get();
DRW_shgroup_call(grp, cube, NULL);
}
else {
psl->clipping_frustum_ps = NULL;
}
}
void OVERLAY_background_draw(OVERLAY_Data *vedata)
{
OVERLAY_PassList *psl = vedata->psl;
if (DRW_state_is_fbo()) {
if (psl->clipping_frustum_ps) {
DRW_draw_pass(psl->clipping_frustum_ps);
}
DRW_draw_pass(psl->background_ps);
}
}
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