2016-02-23 23:16:51 +00:00
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/******************************************************************************
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Copyright (C) 2014 by Nibbles
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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******************************************************************************/
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#include <obs-module.h>
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#include <graphics/vec2.h>
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#include <graphics/vec3.h>
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#include <graphics/vec4.h>
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#include "obs-convenience.h"
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gs_vertbuffer_t *create_uv_vbuffer(uint32_t num_verts, bool add_color) {
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obs_enter_graphics();
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gs_vertbuffer_t *tmp = NULL;
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struct gs_vb_data *vrect = NULL;
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vrect = gs_vbdata_create();
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vrect->num = num_verts;
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vrect->points = (struct vec3 *)bmalloc(sizeof(struct vec3) * num_verts);
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vrect->num_tex = 1;
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vrect->tvarray =
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(struct gs_tvertarray *)bmalloc(sizeof(struct gs_tvertarray));
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vrect->tvarray[0].width = 2;
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vrect->tvarray[0].array = bmalloc(sizeof(struct vec2) * num_verts);
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if (add_color)
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vrect->colors = (uint32_t *)bmalloc
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(sizeof(uint32_t)* num_verts);
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memset(vrect->points, 0, sizeof(struct vec3) * num_verts);
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memset(vrect->tvarray[0].array, 0, sizeof(struct vec2) * num_verts);
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if (add_color)
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memset(vrect->colors, 0, sizeof(uint32_t)* num_verts);
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tmp = gs_vertexbuffer_create(vrect, GS_DYNAMIC);
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if (tmp == NULL) {
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blog(LOG_WARNING, "Couldn't create UV vertex buffer.");
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}
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obs_leave_graphics();
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2018-12-16 16:14:58 +00:00
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2016-02-23 23:16:51 +00:00
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return tmp;
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}
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void draw_uv_vbuffer(gs_vertbuffer_t *vbuf, gs_texture_t *tex,
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gs_effect_t *effect, uint32_t num_verts)
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{
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gs_texture_t *texture = tex;
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gs_technique_t *tech = gs_effect_get_technique(effect, "Draw");
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gs_eparam_t *image = gs_effect_get_param_by_name(effect, "image");
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size_t passes;
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if (vbuf == NULL || tex == NULL) return;
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gs_vertexbuffer_flush(vbuf);
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gs_load_vertexbuffer(vbuf);
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gs_load_indexbuffer(NULL);
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passes = gs_technique_begin(tech);
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for (size_t i = 0; i < passes; i++) {
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if (gs_technique_begin_pass(tech, i)) {
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gs_effect_set_texture(image, texture);
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gs_draw(GS_TRIS, 0, num_verts);
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gs_technique_end_pass(tech);
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}
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}
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gs_technique_end(tech);
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}
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