mirror of
https://github.com/brl/mutter.git
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241 lines
8.0 KiB
C
241 lines
8.0 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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/*
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* Copyright (C) 2017 Red Hat
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* Copyright (c) 2018 DisplayLink (UK) Ltd.
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*
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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 as
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* published by the Free Software Foundation; either version 2 of the
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* 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, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* 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
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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*/
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#include "config.h"
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#define GL_GLEXT_PROTOTYPES
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#include "backends/native/meta-renderer-native-gles3.h"
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#include <GLES3/gl3.h>
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#include <drm_fourcc.h>
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#include <errno.h>
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#include <gio/gio.h>
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#include <string.h>
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#include "backends/meta-egl-ext.h"
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#include "backends/meta-gles3.h"
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#include "backends/meta-gles3-table.h"
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/*
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* GL/gl.h being included may conflit with gl3.h on some architectures.
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* Make sure that hasn't happened on any architecture.
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*/
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#ifdef GL_VERSION_1_1
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#error "Somehow included OpenGL headers when we shouldn't have"
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#endif
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static EGLImageKHR
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create_egl_image (MetaEgl *egl,
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EGLDisplay egl_display,
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EGLContext egl_context,
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unsigned int width,
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unsigned int height,
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uint32_t n_planes,
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uint32_t *strides,
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uint32_t *offsets,
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uint64_t *modifiers,
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uint32_t format,
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int fd,
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GError **error)
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{
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EGLint attribs[37];
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int atti = 0;
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gboolean has_modifier;
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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++] = format;
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has_modifier = (modifiers[0] != DRM_FORMAT_MOD_INVALID &&
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modifiers[0] != DRM_FORMAT_MOD_LINEAR);
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if (n_planes > 0)
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{
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attribs[atti++] = EGL_DMA_BUF_PLANE0_FD_EXT;
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attribs[atti++] = fd;
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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 (has_modifier)
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{
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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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{
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attribs[atti++] = EGL_DMA_BUF_PLANE1_FD_EXT;
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attribs[atti++] = fd;
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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 (has_modifier)
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{
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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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{
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attribs[atti++] = EGL_DMA_BUF_PLANE2_FD_EXT;
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attribs[atti++] = fd;
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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 (has_modifier)
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{
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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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attribs[atti++] = EGL_NONE;
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return meta_egl_create_image (egl, egl_display, EGL_NO_CONTEXT,
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EGL_LINUX_DMA_BUF_EXT, NULL,
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attribs,
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error);
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}
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static void
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paint_egl_image (MetaGles3 *gles3,
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EGLImageKHR egl_image,
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int width,
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int height)
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{
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GLuint texture;
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GLuint framebuffer;
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meta_gles3_clear_error (gles3);
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GLBAS (gles3, glGenFramebuffers, (1, &framebuffer));
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GLBAS (gles3, glBindFramebuffer, (GL_READ_FRAMEBUFFER, framebuffer));
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GLBAS (gles3, glActiveTexture, (GL_TEXTURE0));
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GLBAS (gles3, glGenTextures, (1, &texture));
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GLBAS (gles3, glBindTexture, (GL_TEXTURE_2D, texture));
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GLEXT (gles3, glEGLImageTargetTexture2DOES, (GL_TEXTURE_2D, egl_image));
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GLBAS (gles3, glTexParameteri, (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
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GL_NEAREST));
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GLBAS (gles3, glTexParameteri, (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
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GL_NEAREST));
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GLBAS (gles3, glTexParameteri, (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,
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GL_CLAMP_TO_EDGE));
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GLBAS (gles3, glTexParameteri, (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T,
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GL_CLAMP_TO_EDGE));
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GLBAS (gles3, glTexParameteri, (GL_TEXTURE_2D, GL_TEXTURE_WRAP_R_OES,
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GL_CLAMP_TO_EDGE));
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GLBAS (gles3, glFramebufferTexture2D, (GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
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GL_TEXTURE_2D, texture, 0));
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GLBAS (gles3, glBindFramebuffer, (GL_READ_FRAMEBUFFER, framebuffer));
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GLBAS (gles3, glBlitFramebuffer, (0, height, width, 0,
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0, 0, width, height,
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GL_COLOR_BUFFER_BIT,
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GL_NEAREST));
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}
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gboolean
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meta_renderer_native_gles3_blit_shared_bo (MetaEgl *egl,
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MetaGles3 *gles3,
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EGLDisplay egl_display,
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EGLContext egl_context,
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EGLSurface egl_surface,
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struct gbm_bo *shared_bo,
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GError **error)
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{
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int shared_bo_fd;
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unsigned int width;
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unsigned int height;
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uint32_t i, n_planes;
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uint32_t strides[4] = { 0 };
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uint32_t offsets[4] = { 0 };
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uint64_t modifiers[4] = { 0 };
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uint32_t format;
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EGLImageKHR egl_image;
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shared_bo_fd = gbm_bo_get_fd (shared_bo);
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if (shared_bo_fd < 0)
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{
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g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
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"Failed to export gbm_bo: %s", strerror (errno));
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return FALSE;
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}
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width = gbm_bo_get_width (shared_bo);
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height = gbm_bo_get_height (shared_bo);
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format = gbm_bo_get_format (shared_bo);
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n_planes = gbm_bo_get_plane_count (shared_bo);
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for (i = 0; i < n_planes; i++)
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{
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strides[i] = gbm_bo_get_stride_for_plane (shared_bo, i);
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offsets[i] = gbm_bo_get_offset (shared_bo, i);
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modifiers[i] = gbm_bo_get_modifier (shared_bo);
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}
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egl_image = create_egl_image (egl,
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egl_display,
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egl_context,
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width, height,
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n_planes,
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strides, offsets,
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modifiers, format,
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shared_bo_fd,
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error);
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close (shared_bo_fd);
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if (!egl_image)
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return FALSE;
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paint_egl_image (gles3, egl_image, width, height);
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meta_egl_destroy_image (egl, egl_display, egl_image, NULL);
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return TRUE;
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}
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