80 lines
2.3 KiB
C
80 lines
2.3 KiB
C
/******************************************************************************
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Copyright (C) 2013 by Hugh Bailey <obs.jim@gmail.com>
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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 "gl-subsystem.h"
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static bool gl_init_zsbuffer(struct gs_zstencil_buffer *zs, uint32_t width,
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uint32_t height)
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{
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glGenRenderbuffers(1, &zs->buffer);
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if (!gl_success("glGenRenderbuffers"))
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return false;
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if (!gl_bind_renderbuffer(GL_RENDERBUFFER, zs->buffer))
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return false;
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glRenderbufferStorage(GL_RENDERBUFFER, zs->format, width, height);
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if (!gl_success("glRenderbufferStorage"))
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return false;
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gl_bind_renderbuffer(GL_RENDERBUFFER, 0);
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return true;
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}
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static inline GLenum get_attachment(enum gs_zstencil_format format)
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{
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switch (format) {
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case GS_Z16: return GL_DEPTH_ATTACHMENT;
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case GS_Z24_S8: return GL_DEPTH_STENCIL_ATTACHMENT;
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case GS_Z32F: return GL_DEPTH_ATTACHMENT;
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case GS_Z32F_S8X24: return GL_DEPTH_STENCIL_ATTACHMENT;
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case GS_ZS_NONE: return 0;
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}
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return 0;
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}
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gs_zstencil_t *device_zstencil_create(gs_device_t *device, uint32_t width,
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uint32_t height, enum gs_zstencil_format format)
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{
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struct gs_zstencil_buffer *zs;
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zs = bzalloc(sizeof(struct gs_zstencil_buffer));
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zs->format = convert_zstencil_format(format);
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zs->attachment = get_attachment(format);
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zs->device = device;
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if (!gl_init_zsbuffer(zs, width, height)) {
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blog(LOG_ERROR, "device_zstencil_create (GL) failed");
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gs_zstencil_destroy(zs);
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return NULL;
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}
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return zs;
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}
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void gs_zstencil_destroy(gs_zstencil_t *zs)
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{
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if (zs) {
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if (zs->buffer) {
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glDeleteRenderbuffers(1, &zs->buffer);
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gl_success("glDeleteRenderbuffers");
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}
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bfree(zs);
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}
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}
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