271 lines
8.3 KiB
C
271 lines
8.3 KiB
C
/******************************************************************************
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Copyright (C) 2020 by Georges Basile Stavracas Neto <georges.stavracas@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-egl-common.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <glad/glad_egl.h>
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#if defined(__linux__)
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#include <linux/types.h>
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#include <asm/ioctl.h>
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typedef unsigned int drm_handle_t;
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#else
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#include <stdint.h>
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#include <sys/ioccom.h>
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#include <sys/types.h>
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typedef int8_t __s8;
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typedef uint8_t __u8;
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typedef int16_t __s16;
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typedef uint16_t __u16;
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typedef int32_t __s32;
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typedef uint32_t __u32;
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typedef int64_t __s64;
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typedef uint64_t __u64;
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typedef size_t __kernel_size_t;
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typedef unsigned long drm_handle_t;
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#endif
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typedef void(APIENTRYP PFNGLEGLIMAGETARGETTEXTURE2DOESPROC)(
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GLenum target, GLeglImageOES image);
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static PFNGLEGLIMAGETARGETTEXTURE2DOESPROC glEGLImageTargetTexture2DOES;
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static bool find_gl_extension(const char *extension)
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{
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GLint n, i;
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glGetIntegerv(GL_NUM_EXTENSIONS, &n);
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for (i = 0; i < n; i++) {
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const char *e = (char *)glGetStringi(GL_EXTENSIONS, i);
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if (extension && strcmp(e, extension) == 0)
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return true;
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}
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return false;
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}
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static bool init_egl_image_target_texture_2d_ext(void)
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{
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static bool initialized = false;
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if (!initialized) {
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initialized = true;
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if (!find_gl_extension("GL_OES_EGL_image")) {
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blog(LOG_ERROR, "No GL_OES_EGL_image");
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return false;
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}
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glEGLImageTargetTexture2DOES =
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(PFNGLEGLIMAGETARGETTEXTURE2DOESPROC)eglGetProcAddress(
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"glEGLImageTargetTexture2DOES");
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}
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if (!glEGLImageTargetTexture2DOES)
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return false;
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return true;
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}
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static EGLImageKHR
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create_dmabuf_egl_image(EGLDisplay egl_display, unsigned int width,
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unsigned int height, uint32_t drm_format,
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uint32_t n_planes, const int *fds,
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const uint32_t *strides, const uint32_t *offsets,
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const uint64_t *modifiers)
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{
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EGLAttrib attribs[47];
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int atti = 0;
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/* This requires the Mesa commit in
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* Mesa 10.3 (08264e5dad4df448e7718e782ad9077902089a07) or
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* Mesa 10.2.7 (55d28925e6109a4afd61f109e845a8a51bd17652).
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* Otherwise Mesa closes the fd behind our back and re-importing
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* will fail.
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* https://bugs.freedesktop.org/show_bug.cgi?id=76188
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* */
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attribs[atti++] = EGL_WIDTH;
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attribs[atti++] = width;
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attribs[atti++] = EGL_HEIGHT;
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attribs[atti++] = height;
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attribs[atti++] = EGL_LINUX_DRM_FOURCC_EXT;
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attribs[atti++] = drm_format;
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if (n_planes > 0) {
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attribs[atti++] = EGL_DMA_BUF_PLANE0_FD_EXT;
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attribs[atti++] = fds[0];
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attribs[atti++] = EGL_DMA_BUF_PLANE0_OFFSET_EXT;
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attribs[atti++] = offsets[0];
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attribs[atti++] = EGL_DMA_BUF_PLANE0_PITCH_EXT;
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attribs[atti++] = strides[0];
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if (modifiers) {
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attribs[atti++] = EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT;
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attribs[atti++] = modifiers[0] & 0xFFFFFFFF;
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attribs[atti++] = EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT;
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attribs[atti++] = modifiers[0] >> 32;
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}
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}
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if (n_planes > 1) {
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attribs[atti++] = EGL_DMA_BUF_PLANE1_FD_EXT;
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attribs[atti++] = fds[1];
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attribs[atti++] = EGL_DMA_BUF_PLANE1_OFFSET_EXT;
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attribs[atti++] = offsets[1];
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attribs[atti++] = EGL_DMA_BUF_PLANE1_PITCH_EXT;
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attribs[atti++] = strides[1];
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if (modifiers) {
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attribs[atti++] = EGL_DMA_BUF_PLANE1_MODIFIER_LO_EXT;
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attribs[atti++] = modifiers[1] & 0xFFFFFFFF;
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attribs[atti++] = EGL_DMA_BUF_PLANE1_MODIFIER_HI_EXT;
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attribs[atti++] = modifiers[1] >> 32;
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}
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}
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if (n_planes > 2) {
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attribs[atti++] = EGL_DMA_BUF_PLANE2_FD_EXT;
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attribs[atti++] = fds[2];
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attribs[atti++] = EGL_DMA_BUF_PLANE2_OFFSET_EXT;
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attribs[atti++] = offsets[2];
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attribs[atti++] = EGL_DMA_BUF_PLANE2_PITCH_EXT;
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attribs[atti++] = strides[2];
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if (modifiers) {
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attribs[atti++] = EGL_DMA_BUF_PLANE2_MODIFIER_LO_EXT;
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attribs[atti++] = modifiers[2] & 0xFFFFFFFF;
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attribs[atti++] = EGL_DMA_BUF_PLANE2_MODIFIER_HI_EXT;
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attribs[atti++] = modifiers[2] >> 32;
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}
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}
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if (n_planes > 3) {
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attribs[atti++] = EGL_DMA_BUF_PLANE3_FD_EXT;
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attribs[atti++] = fds[3];
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attribs[atti++] = EGL_DMA_BUF_PLANE3_OFFSET_EXT;
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attribs[atti++] = offsets[3];
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attribs[atti++] = EGL_DMA_BUF_PLANE3_PITCH_EXT;
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attribs[atti++] = strides[3];
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if (modifiers) {
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attribs[atti++] = EGL_DMA_BUF_PLANE3_MODIFIER_LO_EXT;
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attribs[atti++] = modifiers[3] & 0xFFFFFFFF;
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attribs[atti++] = EGL_DMA_BUF_PLANE3_MODIFIER_HI_EXT;
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attribs[atti++] = modifiers[3] >> 32;
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}
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}
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attribs[atti++] = EGL_NONE;
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return eglCreateImage(egl_display, EGL_NO_CONTEXT,
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EGL_LINUX_DMA_BUF_EXT, 0, attribs);
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}
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struct gs_texture *
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gl_egl_create_dmabuf_image(EGLDisplay egl_display, unsigned int width,
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unsigned int height, uint32_t drm_format,
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enum gs_color_format color_format, uint32_t n_planes,
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const int *fds, const uint32_t *strides,
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const uint32_t *offsets, const uint64_t *modifiers)
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{
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struct gs_texture *texture = NULL;
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EGLImage egl_image;
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if (!init_egl_image_target_texture_2d_ext())
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return NULL;
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egl_image = create_dmabuf_egl_image(egl_display, width, height,
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drm_format, n_planes, fds, strides,
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offsets, modifiers);
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if (egl_image == EGL_NO_IMAGE) {
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blog(LOG_ERROR, "Cannot create EGLImage: %s",
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gl_egl_error_to_string(eglGetError()));
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return NULL;
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}
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texture = gs_texture_create(width, height, color_format, 1, NULL,
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GS_DYNAMIC);
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const GLuint gltex = *(GLuint *)gs_texture_get_obj(texture);
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glBindTexture(GL_TEXTURE_2D, gltex);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, egl_image);
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glBindTexture(GL_TEXTURE_2D, 0);
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eglDestroyImage(egl_display, egl_image);
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return texture;
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}
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const char *gl_egl_error_to_string(EGLint error_number)
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{
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switch (error_number) {
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case EGL_SUCCESS:
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return "The last function succeeded without error.";
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break;
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case EGL_NOT_INITIALIZED:
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return "EGL is not initialized, or could not be initialized, for the specified EGL display connection.";
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break;
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case EGL_BAD_ACCESS:
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return "EGL cannot access a requested resource (for example a context is bound in another thread).";
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break;
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case EGL_BAD_ALLOC:
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return "EGL failed to allocate resources for the requested operation.";
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break;
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case EGL_BAD_ATTRIBUTE:
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return "An unrecognized attribute or attribute value was passed in the attribute list.";
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break;
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case EGL_BAD_CONTEXT:
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return "An EGLContext argument does not name a valid EGL rendering context.";
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break;
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case EGL_BAD_CONFIG:
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return "An EGLConfig argument does not name a valid EGL frame buffer configuration.";
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break;
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case EGL_BAD_CURRENT_SURFACE:
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return "The current surface of the calling thread is a window, pixel buffer or pixmap that is no longer valid.";
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break;
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case EGL_BAD_DISPLAY:
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return "An EGLDisplay argument does not name a valid EGL display connection.";
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break;
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case EGL_BAD_SURFACE:
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return "An EGLSurface argument does not name a valid surface (window, pixel buffer or pixmap) configured for GL rendering.";
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break;
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case EGL_BAD_MATCH:
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return "Arguments are inconsistent (for example, a valid context requires buffers not supplied by a valid surface).";
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break;
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case EGL_BAD_PARAMETER:
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return "One or more argument values are invalid.";
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break;
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case EGL_BAD_NATIVE_PIXMAP:
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return "A NativePixmapType argument does not refer to a valid native pixmap.";
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break;
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case EGL_BAD_NATIVE_WINDOW:
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return "A NativeWindowType argument does not refer to a valid native window.";
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break;
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case EGL_CONTEXT_LOST:
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return "A power management event has occurred. The application must destroy all contexts and reinitialise OpenGL ES state and objects to continue rendering. ";
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break;
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default:
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return "Unknown error";
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break;
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}
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}
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