153 lines
5.7 KiB
C
153 lines
5.7 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright 2019, Blender Foundation.
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*/
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/** \file
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* \ingroup draw
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*/
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#include "DRW_render.h"
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#include "gpencil_engine.h"
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#include "smaa_textures.h"
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void GPENCIL_antialiasing_init(struct GPENCIL_Data *vedata)
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{
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GPENCIL_PrivateData *pd = vedata->stl->pd;
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GPENCIL_FramebufferList *fbl = vedata->fbl;
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GPENCIL_TextureList *txl = vedata->txl;
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GPENCIL_PassList *psl = vedata->psl;
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DRWShadingGroup *grp;
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const float *size = DRW_viewport_size_get();
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const float *sizeinv = DRW_viewport_invert_size_get();
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const float metrics[4] = {sizeinv[0], sizeinv[1], size[0], size[1]};
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if (pd->simplify_antialias) {
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/* No AA fallback. */
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DRW_PASS_CREATE(psl->smaa_resolve_ps, DRW_STATE_WRITE_COLOR | DRW_STATE_BLEND_CUSTOM);
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GPUShader *sh = GPENCIL_shader_antialiasing(2);
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grp = DRW_shgroup_create(sh, psl->smaa_resolve_ps);
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DRW_shgroup_uniform_texture(grp, "blendTex", pd->color_tx);
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DRW_shgroup_uniform_texture(grp, "colorTex", pd->color_tx);
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DRW_shgroup_uniform_texture(grp, "revealTex", pd->reveal_tx);
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DRW_shgroup_uniform_bool_copy(grp, "doAntiAliasing", false);
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DRW_shgroup_uniform_bool_copy(grp, "onlyAlpha", pd->draw_wireframe);
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DRW_shgroup_uniform_vec4_copy(grp, "viewportMetrics", metrics);
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DRW_shgroup_call_procedural_triangles(grp, NULL, 1);
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return;
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}
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if (txl->smaa_search_tx == NULL) {
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txl->smaa_search_tx = GPU_texture_create_2d(
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"smaa_search", SEARCHTEX_WIDTH, SEARCHTEX_HEIGHT, 1, GPU_R8, NULL);
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GPU_texture_update(txl->smaa_search_tx, GPU_DATA_UBYTE, searchTexBytes);
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txl->smaa_area_tx = GPU_texture_create_2d(
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"smaa_area", AREATEX_WIDTH, AREATEX_HEIGHT, 1, GPU_RG8, NULL);
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GPU_texture_update(txl->smaa_area_tx, GPU_DATA_UBYTE, areaTexBytes);
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GPU_texture_filter_mode(txl->smaa_search_tx, true);
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GPU_texture_filter_mode(txl->smaa_area_tx, true);
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}
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{
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pd->smaa_edge_tx = DRW_texture_pool_query_2d(
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size[0], size[1], GPU_RG8, &draw_engine_gpencil_type);
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pd->smaa_weight_tx = DRW_texture_pool_query_2d(
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size[0], size[1], GPU_RGBA8, &draw_engine_gpencil_type);
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GPU_framebuffer_ensure_config(&fbl->smaa_edge_fb,
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{
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GPU_ATTACHMENT_NONE,
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GPU_ATTACHMENT_TEXTURE(pd->smaa_edge_tx),
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});
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GPU_framebuffer_ensure_config(&fbl->smaa_weight_fb,
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{
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GPU_ATTACHMENT_NONE,
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GPU_ATTACHMENT_TEXTURE(pd->smaa_weight_tx),
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});
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}
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{
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/* Stage 1: Edge detection. */
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DRW_PASS_CREATE(psl->smaa_edge_ps, DRW_STATE_WRITE_COLOR);
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GPUShader *sh = GPENCIL_shader_antialiasing(0);
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grp = DRW_shgroup_create(sh, psl->smaa_edge_ps);
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DRW_shgroup_uniform_texture(grp, "colorTex", pd->color_tx);
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DRW_shgroup_uniform_texture(grp, "revealTex", pd->reveal_tx);
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DRW_shgroup_uniform_vec4_copy(grp, "viewportMetrics", metrics);
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DRW_shgroup_uniform_float_copy(
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grp, "lumaWeight", pd->scene->grease_pencil_settings.smaa_threshold);
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DRW_shgroup_clear_framebuffer(grp, GPU_COLOR_BIT, 0, 0, 0, 0, 0.0f, 0x0);
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DRW_shgroup_call_procedural_triangles(grp, NULL, 1);
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}
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{
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/* Stage 2: Blend Weight/Coord. */
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DRW_PASS_CREATE(psl->smaa_weight_ps, DRW_STATE_WRITE_COLOR);
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GPUShader *sh = GPENCIL_shader_antialiasing(1);
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grp = DRW_shgroup_create(sh, psl->smaa_weight_ps);
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DRW_shgroup_uniform_texture(grp, "edgesTex", pd->smaa_edge_tx);
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DRW_shgroup_uniform_texture(grp, "areaTex", txl->smaa_area_tx);
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DRW_shgroup_uniform_texture(grp, "searchTex", txl->smaa_search_tx);
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DRW_shgroup_uniform_vec4_copy(grp, "viewportMetrics", metrics);
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DRW_shgroup_clear_framebuffer(grp, GPU_COLOR_BIT, 0, 0, 0, 0, 0.0f, 0x0);
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DRW_shgroup_call_procedural_triangles(grp, NULL, 1);
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}
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{
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/* Stage 3: Resolve. */
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DRW_PASS_CREATE(psl->smaa_resolve_ps, DRW_STATE_WRITE_COLOR | DRW_STATE_BLEND_CUSTOM);
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GPUShader *sh = GPENCIL_shader_antialiasing(2);
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grp = DRW_shgroup_create(sh, psl->smaa_resolve_ps);
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DRW_shgroup_uniform_texture(grp, "blendTex", pd->smaa_weight_tx);
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DRW_shgroup_uniform_texture(grp, "colorTex", pd->color_tx);
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DRW_shgroup_uniform_texture(grp, "revealTex", pd->reveal_tx);
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DRW_shgroup_uniform_bool_copy(grp, "doAntiAliasing", true);
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DRW_shgroup_uniform_bool_copy(grp, "onlyAlpha", pd->draw_wireframe);
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DRW_shgroup_uniform_vec4_copy(grp, "viewportMetrics", metrics);
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DRW_shgroup_call_procedural_triangles(grp, NULL, 1);
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}
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}
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void GPENCIL_antialiasing_draw(struct GPENCIL_Data *vedata)
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{
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GPENCIL_FramebufferList *fbl = vedata->fbl;
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GPENCIL_PrivateData *pd = vedata->stl->pd;
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GPENCIL_PassList *psl = vedata->psl;
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if (!pd->simplify_antialias) {
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GPU_framebuffer_bind(fbl->smaa_edge_fb);
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DRW_draw_pass(psl->smaa_edge_ps);
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GPU_framebuffer_bind(fbl->smaa_weight_fb);
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DRW_draw_pass(psl->smaa_weight_ps);
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}
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GPU_framebuffer_bind(pd->scene_fb);
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DRW_draw_pass(psl->smaa_resolve_ps);
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}
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