[qemu.git] / ui / egl-helpers.c

/*
 * Copyright (C) 2015-2016 Gerd Hoffmann <[email protected]>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
 */
#include "qemu/osdep.h"
#include "qemu/drm.h"
#include "qemu/error-report.h"
#include "ui/console.h"
#include "ui/egl-helpers.h"

EGLDisplay *qemu_egl_display;
EGLConfig qemu_egl_config;
DisplayGLMode qemu_egl_mode;

/* ------------------------------------------------------------------ */

static void egl_fb_delete_texture(egl_fb *fb)
{
    if (!fb->delete_texture) {
        return;
    }

    glDeleteTextures(1, &fb->texture);
    fb->delete_texture = false;
}

void egl_fb_destroy(egl_fb *fb)
{
    if (!fb->framebuffer) {
        return;
    }

    egl_fb_delete_texture(fb);
    glDeleteFramebuffers(1, &fb->framebuffer);

    fb->width = 0;
    fb->height = 0;
    fb->texture = 0;
    fb->framebuffer = 0;
}

void egl_fb_setup_default(egl_fb *fb, int width, int height)
{
    fb->width = width;
    fb->height = height;
    fb->framebuffer = 0; /* default framebuffer */
}

void egl_fb_setup_for_tex(egl_fb *fb, int width, int height,
                          GLuint texture, bool delete)
{
    egl_fb_delete_texture(fb);

    fb->width = width;
    fb->height = height;
    fb->texture = texture;
    fb->delete_texture = delete;
    if (!fb->framebuffer) {
        glGenFramebuffers(1, &fb->framebuffer);
    }

    glBindFramebuffer(GL_FRAMEBUFFER_EXT, fb->framebuffer);
    glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
                              GL_TEXTURE_2D, fb->texture, 0);
}

void egl_fb_setup_new_tex(egl_fb *fb, int width, int height)
{
    GLuint texture;

    glGenTextures(1, &texture);
    glBindTexture(GL_TEXTURE_2D, texture);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height,
                 0, GL_BGRA, GL_UNSIGNED_BYTE, 0);

    egl_fb_setup_for_tex(fb, width, height, texture, true);
}

void egl_fb_blit(egl_fb *dst, egl_fb *src, bool flip)
{
    GLuint y1, y2;

    glBindFramebuffer(GL_READ_FRAMEBUFFER, src->framebuffer);
    glBindFramebuffer(GL_DRAW_FRAMEBUFFER, dst->framebuffer);
    glViewport(0, 0, dst->width, dst->height);
    y1 = flip ? src->height : 0;
    y2 = flip ? 0 : src->height;
    glBlitFramebuffer(0, y1, src->width, y2,
                      0, 0, dst->width, dst->height,
                      GL_COLOR_BUFFER_BIT, GL_LINEAR);
}

void egl_fb_read(void *dst, egl_fb *src)
{
    glBindFramebuffer(GL_READ_FRAMEBUFFER, src->framebuffer);
    glReadBuffer(GL_COLOR_ATTACHMENT0_EXT);
    glReadPixels(0, 0, src->width, src->height,
                 GL_BGRA, GL_UNSIGNED_BYTE, dst);
}

void egl_texture_blit(QemuGLShader *gls, egl_fb *dst, egl_fb *src, bool flip)
{
    glBindFramebuffer(GL_FRAMEBUFFER_EXT, dst->framebuffer);
    glViewport(0, 0, dst->width, dst->height);
    glEnable(GL_TEXTURE_2D);
    glBindTexture(GL_TEXTURE_2D, src->texture);
    qemu_gl_run_texture_blit(gls, flip);
}

void egl_texture_blend(QemuGLShader *gls, egl_fb *dst, egl_fb *src, bool flip,
                       int x, int y)
{
    glBindFramebuffer(GL_FRAMEBUFFER_EXT, dst->framebuffer);
    if (flip) {
        glViewport(x, y, src->width, src->height);
    } else {
        glViewport(x, dst->height - src->height - y,
                   src->width, src->height);
    }
    glEnable(GL_TEXTURE_2D);
    glBindTexture(GL_TEXTURE_2D, src->texture);
    glEnable(GL_BLEND);
    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
    qemu_gl_run_texture_blit(gls, flip);
    glDisable(GL_BLEND);
}

/* ---------------------------------------------------------------------- */

#ifdef CONFIG_OPENGL_DMABUF

int qemu_egl_rn_fd;
struct gbm_device *qemu_egl_rn_gbm_dev;
EGLContext qemu_egl_rn_ctx;

int egl_rendernode_init(const char *rendernode, DisplayGLMode mode)
{
    qemu_egl_rn_fd = -1;
    int rc;

    qemu_egl_rn_fd = qemu_drm_rendernode_open(rendernode);
    if (qemu_egl_rn_fd == -1) {
        error_report("egl: no drm render node available");
        goto err;
    }

    qemu_egl_rn_gbm_dev = gbm_create_device(qemu_egl_rn_fd);
    if (!qemu_egl_rn_gbm_dev) {
        error_report("egl: gbm_create_device failed");
        goto err;
    }

    rc = qemu_egl_init_dpy_mesa((EGLNativeDisplayType)qemu_egl_rn_gbm_dev,
                                mode);
    if (rc != 0) {
        /* qemu_egl_init_dpy_mesa reports error */
        goto err;
    }

    if (!epoxy_has_egl_extension(qemu_egl_display,
                                 "EGL_KHR_surfaceless_context")) {
        error_report("egl: EGL_KHR_surfaceless_context not supported");
        goto err;
    }
    if (!epoxy_has_egl_extension(qemu_egl_display,
                                 "EGL_MESA_image_dma_buf_export")) {
        error_report("egl: EGL_MESA_image_dma_buf_export not supported");
        goto err;
    }

    qemu_egl_rn_ctx = qemu_egl_init_ctx();
    if (!qemu_egl_rn_ctx) {
        error_report("egl: egl_init_ctx failed");
        goto err;
    }

    return 0;

err:
    if (qemu_egl_rn_gbm_dev) {
        gbm_device_destroy(qemu_egl_rn_gbm_dev);
    }
    if (qemu_egl_rn_fd != -1) {
        close(qemu_egl_rn_fd);
    }

    return -1;
}

int egl_get_fd_for_texture(uint32_t tex_id, EGLint *stride, EGLint *fourcc)
{
    EGLImageKHR image;
    EGLint num_planes, fd;

    image = eglCreateImageKHR(qemu_egl_display, eglGetCurrentContext(),
                              EGL_GL_TEXTURE_2D_KHR,
                              (EGLClientBuffer)(unsigned long)tex_id,
                              NULL);
    if (!image) {
        return -1;
    }

    eglExportDMABUFImageQueryMESA(qemu_egl_display, image, fourcc,
                                  &num_planes, NULL);
    if (num_planes != 1) {
        eglDestroyImageKHR(qemu_egl_display, image);
        return -1;
    }
    eglExportDMABUFImageMESA(qemu_egl_display, image, &fd, stride, NULL);
    eglDestroyImageKHR(qemu_egl_display, image);

    return fd;
}

void egl_dmabuf_import_texture(QemuDmaBuf *dmabuf)
{
    EGLImageKHR image = EGL_NO_IMAGE_KHR;
    EGLint attrs[] = {
        EGL_DMA_BUF_PLANE0_FD_EXT,      dmabuf->fd,
        EGL_DMA_BUF_PLANE0_PITCH_EXT,   dmabuf->stride,
        EGL_DMA_BUF_PLANE0_OFFSET_EXT,  0,
        EGL_WIDTH,                      dmabuf->width,
        EGL_HEIGHT,                     dmabuf->height,
        EGL_LINUX_DRM_FOURCC_EXT,       dmabuf->fourcc,
        EGL_NONE, /* end of list */
    };

    if (dmabuf->texture != 0) {
        return;
    }

    image = eglCreateImageKHR(qemu_egl_display,
                              EGL_NO_CONTEXT,
                              EGL_LINUX_DMA_BUF_EXT,
                              NULL, attrs);
    if (image == EGL_NO_IMAGE_KHR) {
        error_report("eglCreateImageKHR failed");
        return;
    }

    glGenTextures(1, &dmabuf->texture);
    glBindTexture(GL_TEXTURE_2D, dmabuf->texture);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

    glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (GLeglImageOES)image);
    eglDestroyImageKHR(qemu_egl_display, image);
}

void egl_dmabuf_release_texture(QemuDmaBuf *dmabuf)
{
    if (dmabuf->texture == 0) {
        return;
    }

    glDeleteTextures(1, &dmabuf->texture);
    dmabuf->texture = 0;
}

#endif /* CONFIG_OPENGL_DMABUF */

/* ---------------------------------------------------------------------- */

EGLSurface qemu_egl_init_surface_x11(EGLContext ectx, Window win)
{
    EGLSurface esurface;
    EGLBoolean b;

    esurface = eglCreateWindowSurface(qemu_egl_display,
                                      qemu_egl_config,
                                      (EGLNativeWindowType)win, NULL);
    if (esurface == EGL_NO_SURFACE) {
        error_report("egl: eglCreateWindowSurface failed");
        return NULL;
    }

    b = eglMakeCurrent(qemu_egl_display, esurface, esurface, ectx);
    if (b == EGL_FALSE) {
        error_report("egl: eglMakeCurrent failed");
        return NULL;
    }

    return esurface;
}

/* ---------------------------------------------------------------------- */

/*
 * Taken from glamor_egl.h from the Xorg xserver, which is MIT licensed
 *
 * Create an EGLDisplay from a native display type. This is a little quirky
 * for a few reasons.
 *
 * 1: GetPlatformDisplayEXT and GetPlatformDisplay are the API you want to
 * use, but have different function signatures in the third argument; this
 * happens not to matter for us, at the moment, but it means epoxy won't alias
 * them together.
 *
 * 2: epoxy 1.3 and earlier don't understand EGL client extensions, which
 * means you can't call "eglGetPlatformDisplayEXT" directly, as the resolver
 * will crash.
 *
 * 3: You can't tell whether you have EGL 1.5 at this point, because
 * eglQueryString(EGL_VERSION) is a property of the display, which we don't
 * have yet. So you have to query for extensions no matter what. Fortunately
 * epoxy_has_egl_extension _does_ let you query for client extensions, so
 * we don't have to write our own extension string parsing.
 *
 * 4. There is no EGL_KHR_platform_base to complement the EXT one, thus one
 * needs to know EGL 1.5 is supported in order to use the eglGetPlatformDisplay
 * function pointer.
 * We can workaround this (circular dependency) by probing for the EGL 1.5
 * platform extensions (EGL_KHR_platform_gbm and friends) yet it doesn't seem
 * like mesa will be able to advertise these (even though it can do EGL 1.5).
 */
static EGLDisplay qemu_egl_get_display(EGLNativeDisplayType native,
                                       EGLenum platform)
{
    EGLDisplay dpy = EGL_NO_DISPLAY;

    /* In practise any EGL 1.5 implementation would support the EXT extension */
    if (epoxy_has_egl_extension(NULL, "EGL_EXT_platform_base")) {
        PFNEGLGETPLATFORMDISPLAYEXTPROC getPlatformDisplayEXT =
            (void *) eglGetProcAddress("eglGetPlatformDisplayEXT");
        if (getPlatformDisplayEXT && platform != 0) {
            dpy = getPlatformDisplayEXT(platform, native, NULL);
        }
    }

    if (dpy == EGL_NO_DISPLAY) {
        /* fallback */
        dpy = eglGetDisplay(native);
    }
    return dpy;
}

static int qemu_egl_init_dpy(EGLNativeDisplayType dpy,
                             EGLenum platform,
                             DisplayGLMode mode)
{
    static const EGLint conf_att_core[] = {
        EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
        EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
        EGL_RED_SIZE,   5,
        EGL_GREEN_SIZE, 5,
        EGL_BLUE_SIZE,  5,
        EGL_ALPHA_SIZE, 0,
        EGL_NONE,
    };
    static const EGLint conf_att_gles[] = {
        EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
        EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
        EGL_RED_SIZE,   5,
        EGL_GREEN_SIZE, 5,
        EGL_BLUE_SIZE,  5,
        EGL_ALPHA_SIZE, 0,
        EGL_NONE,
    };
    EGLint major, minor;
    EGLBoolean b;
    EGLint n;
    bool gles = (mode == DISPLAYGL_MODE_ES);

    qemu_egl_display = qemu_egl_get_display(dpy, platform);
    if (qemu_egl_display == EGL_NO_DISPLAY) {
        error_report("egl: eglGetDisplay failed");
        return -1;
    }

    b = eglInitialize(qemu_egl_display, &major, &minor);
    if (b == EGL_FALSE) {
        error_report("egl: eglInitialize failed");
        return -1;
    }

    b = eglBindAPI(gles ?  EGL_OPENGL_ES_API : EGL_OPENGL_API);
    if (b == EGL_FALSE) {
        error_report("egl: eglBindAPI failed (%s mode)",
                     gles ? "gles" : "core");
        return -1;
    }

    b = eglChooseConfig(qemu_egl_display,
                        gles ? conf_att_gles : conf_att_core,
                        &qemu_egl_config, 1, &n);
    if (b == EGL_FALSE || n != 1) {
        error_report("egl: eglChooseConfig failed (%s mode)",
                     gles ? "gles" : "core");
        return -1;
    }

    qemu_egl_mode = gles ? DISPLAYGL_MODE_ES : DISPLAYGL_MODE_CORE;
    return 0;
}

int qemu_egl_init_dpy_x11(EGLNativeDisplayType dpy, DisplayGLMode mode)
{
#ifdef EGL_KHR_platform_x11
    return qemu_egl_init_dpy(dpy, EGL_PLATFORM_X11_KHR, mode);
#else
    return qemu_egl_init_dpy(dpy, 0, mode);
#endif
}

int qemu_egl_init_dpy_mesa(EGLNativeDisplayType dpy, DisplayGLMode mode)
{
#ifdef EGL_MESA_platform_gbm
    return qemu_egl_init_dpy(dpy, EGL_PLATFORM_GBM_MESA, mode);
#else
    return qemu_egl_init_dpy(dpy, 0, mode);
#endif
}

EGLContext qemu_egl_init_ctx(void)
{
    static const EGLint ctx_att_core[] = {
        EGL_CONTEXT_OPENGL_PROFILE_MASK, EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT,
        EGL_NONE
    };
    static const EGLint ctx_att_gles[] = {
        EGL_CONTEXT_CLIENT_VERSION, 2,
        EGL_NONE
    };
    bool gles = (qemu_egl_mode == DISPLAYGL_MODE_ES);
    EGLContext ectx;
    EGLBoolean b;

    ectx = eglCreateContext(qemu_egl_display, qemu_egl_config, EGL_NO_CONTEXT,
                            gles ? ctx_att_gles : ctx_att_core);
    if (ectx == EGL_NO_CONTEXT) {
        error_report("egl: eglCreateContext failed");
        return NULL;
    }

    b = eglMakeCurrent(qemu_egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, ectx);
    if (b == EGL_FALSE) {
        error_report("egl: eglMakeCurrent failed");
        return NULL;
    }

    return ectx;
}
Commit	Line	Data
6250dff3 FZ	1	/*
	2	* Copyright (C) 2015-2016 Gerd Hoffmann <[email protected]>
	3	*
	4	* This library is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU Lesser General Public
	6	* License as published by the Free Software Foundation; either
	7	* version 2.1 of the License, or (at your option) any later version.
	8	*
	9	* This library is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	12	* Lesser General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU Lesser General Public
	15	* License along with this library; if not, see <http://www.gnu.org/licenses/>.
	16	*/
e16f4c87	17	#include "qemu/osdep.h"
b1d38037	18	#include "qemu/drm.h"
38a55bdd	19	#include "qemu/error-report.h"
86c0522c	20	#include "ui/console.h"
7ced9e9f GH	21	#include "ui/egl-helpers.h"
	22
	23	EGLDisplay *qemu_egl_display;
	24	EGLConfig qemu_egl_config;
54d208ff	25	DisplayGLMode qemu_egl_mode;
7ced9e9f	26
6fafc260 GH	27	/* ------------------------------------------------------------------ */
6fafc260 GH	28
74083f9c GH	29	static void egl_fb_delete_texture(egl_fb *fb)
	30	{
	31	if (!fb->delete_texture) {
	32	return;
	33	}
	34
	35	glDeleteTextures(1, &fb->texture);
	36	fb->delete_texture = false;
	37	}
	38
6fafc260 GH	39	void egl_fb_destroy(egl_fb *fb)
	40	{
	41	if (!fb->framebuffer) {
	42	return;
	43	}
	44
74083f9c	45	egl_fb_delete_texture(fb);
6fafc260 GH	46	glDeleteFramebuffers(1, &fb->framebuffer);
	47
	48	fb->width = 0;
	49	fb->height = 0;
	50	fb->texture = 0;
	51	fb->framebuffer = 0;
	52	}
	53
	54	void egl_fb_setup_default(egl_fb *fb, int width, int height)
	55	{
	56	fb->width = width;
	57	fb->height = height;
	58	fb->framebuffer = 0; /* default framebuffer */
	59	}
	60
74083f9c GH	61	void egl_fb_setup_for_tex(egl_fb *fb, int width, int height,
74083f9c GH	62	GLuint texture, bool delete)
6fafc260	63	{
74083f9c GH	64	egl_fb_delete_texture(fb);
74083f9c GH	65
6fafc260 GH	66	fb->width = width;
	67	fb->height = height;
	68	fb->texture = texture;
74083f9c	69	fb->delete_texture = delete;
6fafc260 GH	70	if (!fb->framebuffer) {
	71	glGenFramebuffers(1, &fb->framebuffer);
	72	}
	73
	74	glBindFramebuffer(GL_FRAMEBUFFER_EXT, fb->framebuffer);
	75	glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
	76	GL_TEXTURE_2D, fb->texture, 0);
	77	}
	78
74083f9c	79	void egl_fb_setup_new_tex(egl_fb *fb, int width, int height)
6fafc260 GH	80	{
	81	GLuint texture;
	82
	83	glGenTextures(1, &texture);
	84	glBindTexture(GL_TEXTURE_2D, texture);
41126214	85	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height,
6fafc260 GH	86	0, GL_BGRA, GL_UNSIGNED_BYTE, 0);
6fafc260 GH	87
74083f9c	88	egl_fb_setup_for_tex(fb, width, height, texture, true);
6fafc260 GH	89	}
	90
	91	void egl_fb_blit(egl_fb dst, egl_fb src, bool flip)
	92	{
	93	GLuint y1, y2;
	94
	95	glBindFramebuffer(GL_READ_FRAMEBUFFER, src->framebuffer);
	96	glBindFramebuffer(GL_DRAW_FRAMEBUFFER, dst->framebuffer);
	97	glViewport(0, 0, dst->width, dst->height);
	98	y1 = flip ? src->height : 0;
	99	y2 = flip ? 0 : src->height;
	100	glBlitFramebuffer(0, y1, src->width, y2,
	101	0, 0, dst->width, dst->height,
	102	GL_COLOR_BUFFER_BIT, GL_LINEAR);
	103	}
	104
	105	void egl_fb_read(void dst, egl_fb src)
	106	{
	107	glBindFramebuffer(GL_READ_FRAMEBUFFER, src->framebuffer);
	108	glReadBuffer(GL_COLOR_ATTACHMENT0_EXT);
	109	glReadPixels(0, 0, src->width, src->height,
	110	GL_BGRA, GL_UNSIGNED_BYTE, dst);
	111	}
	112
0eb50c27 GH	113	void egl_texture_blit(QemuGLShader gls, egl_fb dst, egl_fb *src, bool flip)
	114	{
	115	glBindFramebuffer(GL_FRAMEBUFFER_EXT, dst->framebuffer);
	116	glViewport(0, 0, dst->width, dst->height);
	117	glEnable(GL_TEXTURE_2D);
	118	glBindTexture(GL_TEXTURE_2D, src->texture);
	119	qemu_gl_run_texture_blit(gls, flip);
	120	}
	121
	122	void egl_texture_blend(QemuGLShader gls, egl_fb dst, egl_fb *src, bool flip,
	123	int x, int y)
	124	{
	125	glBindFramebuffer(GL_FRAMEBUFFER_EXT, dst->framebuffer);
	126	if (flip) {
	127	glViewport(x, y, src->width, src->height);
	128	} else {
	129	glViewport(x, dst->height - src->height - y,
	130	src->width, src->height);
	131	}
	132	glEnable(GL_TEXTURE_2D);
	133	glBindTexture(GL_TEXTURE_2D, src->texture);
	134	glEnable(GL_BLEND);
	135	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	136	qemu_gl_run_texture_blit(gls, flip);
	137	glDisable(GL_BLEND);
	138	}
	139
7ced9e9f GH	140	/* ---------------------------------------------------------------------- */
7ced9e9f GH	141
1e316598 GH	142	#ifdef CONFIG_OPENGL_DMABUF
	143
	144	int qemu_egl_rn_fd;
	145	struct gbm_device *qemu_egl_rn_gbm_dev;
	146	EGLContext qemu_egl_rn_ctx;
	147
54d208ff	148	int egl_rendernode_init(const char *rendernode, DisplayGLMode mode)
1e316598 GH	149	{
1e316598 GH	150	qemu_egl_rn_fd = -1;
151c8e60	151	int rc;
1e316598	152
b1d38037	153	qemu_egl_rn_fd = qemu_drm_rendernode_open(rendernode);
1e316598	154	if (qemu_egl_rn_fd == -1) {
38a55bdd	155	error_report("egl: no drm render node available");
1e316598 GH	156	goto err;
	157	}
	158
	159	qemu_egl_rn_gbm_dev = gbm_create_device(qemu_egl_rn_fd);
	160	if (!qemu_egl_rn_gbm_dev) {
38a55bdd	161	error_report("egl: gbm_create_device failed");
1e316598 GH	162	goto err;
	163	}
	164
54d208ff GH	165	rc = qemu_egl_init_dpy_mesa((EGLNativeDisplayType)qemu_egl_rn_gbm_dev,
54d208ff GH	166	mode);
151c8e60 GH	167	if (rc != 0) {
	168	/* qemu_egl_init_dpy_mesa reports error */
	169	goto err;
	170	}
1e316598 GH	171
	172	if (!epoxy_has_egl_extension(qemu_egl_display,
	173	"EGL_KHR_surfaceless_context")) {
38a55bdd	174	error_report("egl: EGL_KHR_surfaceless_context not supported");
1e316598 GH	175	goto err;
	176	}
	177	if (!epoxy_has_egl_extension(qemu_egl_display,
	178	"EGL_MESA_image_dma_buf_export")) {
38a55bdd	179	error_report("egl: EGL_MESA_image_dma_buf_export not supported");
1e316598 GH	180	goto err;
	181	}
	182
	183	qemu_egl_rn_ctx = qemu_egl_init_ctx();
	184	if (!qemu_egl_rn_ctx) {
38a55bdd	185	error_report("egl: egl_init_ctx failed");
1e316598 GH	186	goto err;
	187	}
	188
	189	return 0;
	190
	191	err:
	192	if (qemu_egl_rn_gbm_dev) {
	193	gbm_device_destroy(qemu_egl_rn_gbm_dev);
	194	}
	195	if (qemu_egl_rn_fd != -1) {
	196	close(qemu_egl_rn_fd);
	197	}
	198
	199	return -1;
	200	}
	201
	202	int egl_get_fd_for_texture(uint32_t tex_id, EGLint stride, EGLint fourcc)
	203	{
	204	EGLImageKHR image;
	205	EGLint num_planes, fd;
	206
	207	image = eglCreateImageKHR(qemu_egl_display, eglGetCurrentContext(),
	208	EGL_GL_TEXTURE_2D_KHR,
	209	(EGLClientBuffer)(unsigned long)tex_id,
	210	NULL);
	211	if (!image) {
	212	return -1;
	213	}
	214
	215	eglExportDMABUFImageQueryMESA(qemu_egl_display, image, fourcc,
	216	&num_planes, NULL);
	217	if (num_planes != 1) {
	218	eglDestroyImageKHR(qemu_egl_display, image);
	219	return -1;
	220	}
	221	eglExportDMABUFImageMESA(qemu_egl_display, image, &fd, stride, NULL);
	222	eglDestroyImageKHR(qemu_egl_display, image);
	223
	224	return fd;
	225	}
	226
86c0522c GH	227	void egl_dmabuf_import_texture(QemuDmaBuf *dmabuf)
	228	{
	229	EGLImageKHR image = EGL_NO_IMAGE_KHR;
	230	EGLint attrs[] = {
	231	EGL_DMA_BUF_PLANE0_FD_EXT, dmabuf->fd,
	232	EGL_DMA_BUF_PLANE0_PITCH_EXT, dmabuf->stride,
	233	EGL_DMA_BUF_PLANE0_OFFSET_EXT, 0,
	234	EGL_WIDTH, dmabuf->width,
	235	EGL_HEIGHT, dmabuf->height,
	236	EGL_LINUX_DRM_FOURCC_EXT, dmabuf->fourcc,
	237	EGL_NONE, /* end of list */
	238	};
	239
	240	if (dmabuf->texture != 0) {
	241	return;
	242	}
	243
	244	image = eglCreateImageKHR(qemu_egl_display,
	245	EGL_NO_CONTEXT,
	246	EGL_LINUX_DMA_BUF_EXT,
	247	NULL, attrs);
	248	if (image == EGL_NO_IMAGE_KHR) {
	249	error_report("eglCreateImageKHR failed");
	250	return;
	251	}
	252
	253	glGenTextures(1, &dmabuf->texture);
	254	glBindTexture(GL_TEXTURE_2D, dmabuf->texture);
	255	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
	256	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
	257
	258	glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (GLeglImageOES)image);
	259	eglDestroyImageKHR(qemu_egl_display, image);
	260	}
	261
	262	void egl_dmabuf_release_texture(QemuDmaBuf *dmabuf)
	263	{
	264	if (dmabuf->texture == 0) {
	265	return;
	266	}
	267
	268	glDeleteTextures(1, &dmabuf->texture);
	269	dmabuf->texture = 0;
	270	}
	271
1e316598 GH	272	#endif /* CONFIG_OPENGL_DMABUF */
	273
	274	/* ---------------------------------------------------------------------- */
	275
7ced9e9f GH	276	EGLSurface qemu_egl_init_surface_x11(EGLContext ectx, Window win)
	277	{
	278	EGLSurface esurface;
	279	EGLBoolean b;
	280
7ced9e9f GH	281	esurface = eglCreateWindowSurface(qemu_egl_display,
	282	qemu_egl_config,
	283	(EGLNativeWindowType)win, NULL);
	284	if (esurface == EGL_NO_SURFACE) {
38a55bdd	285	error_report("egl: eglCreateWindowSurface failed");
7ced9e9f GH	286	return NULL;
	287	}
	288
	289	b = eglMakeCurrent(qemu_egl_display, esurface, esurface, ectx);
	290	if (b == EGL_FALSE) {
38a55bdd	291	error_report("egl: eglMakeCurrent failed");
7ced9e9f GH	292	return NULL;
	293	}
	294
	295	return esurface;
	296	}
	297
	298	/* ---------------------------------------------------------------------- */
	299
8bce03e3 GH	300	/*
	301	* Taken from glamor_egl.h from the Xorg xserver, which is MIT licensed
	302	*
	303	* Create an EGLDisplay from a native display type. This is a little quirky
	304	* for a few reasons.
	305	*
	306	* 1: GetPlatformDisplayEXT and GetPlatformDisplay are the API you want to
	307	* use, but have different function signatures in the third argument; this
	308	* happens not to matter for us, at the moment, but it means epoxy won't alias
	309	* them together.
	310	*
	311	* 2: epoxy 1.3 and earlier don't understand EGL client extensions, which
	312	* means you can't call "eglGetPlatformDisplayEXT" directly, as the resolver
	313	* will crash.
	314	*
	315	* 3: You can't tell whether you have EGL 1.5 at this point, because
	316	* eglQueryString(EGL_VERSION) is a property of the display, which we don't
	317	* have yet. So you have to query for extensions no matter what. Fortunately
	318	* epoxy_has_egl_extension _does_ let you query for client extensions, so
	319	* we don't have to write our own extension string parsing.
	320	*
	321	* 4. There is no EGL_KHR_platform_base to complement the EXT one, thus one
	322	* needs to know EGL 1.5 is supported in order to use the eglGetPlatformDisplay
	323	* function pointer.
	324	* We can workaround this (circular dependency) by probing for the EGL 1.5
	325	* platform extensions (EGL_KHR_platform_gbm and friends) yet it doesn't seem
	326	* like mesa will be able to advertise these (even though it can do EGL 1.5).
	327	*/
e1913dbb GH	328	static EGLDisplay qemu_egl_get_display(EGLNativeDisplayType native,
e1913dbb GH	329	EGLenum platform)
8bce03e3 GH	330	{
	331	EGLDisplay dpy = EGL_NO_DISPLAY;
	332
8bce03e3 GH	333	/* In practise any EGL 1.5 implementation would support the EXT extension */
	334	if (epoxy_has_egl_extension(NULL, "EGL_EXT_platform_base")) {
	335	PFNEGLGETPLATFORMDISPLAYEXTPROC getPlatformDisplayEXT =
	336	(void *) eglGetProcAddress("eglGetPlatformDisplayEXT");
e1913dbb GH	337	if (getPlatformDisplayEXT && platform != 0) {
e1913dbb GH	338	dpy = getPlatformDisplayEXT(platform, native, NULL);
8bce03e3 GH	339	}
8bce03e3 GH	340	}
8bce03e3 GH	341
	342	if (dpy == EGL_NO_DISPLAY) {
	343	/* fallback */
	344	dpy = eglGetDisplay(native);
	345	}
	346	return dpy;
	347	}
	348
e1913dbb	349	static int qemu_egl_init_dpy(EGLNativeDisplayType dpy,
54d208ff GH	350	EGLenum platform,
54d208ff GH	351	DisplayGLMode mode)
7ced9e9f	352	{
54d208ff	353	static const EGLint conf_att_core[] = {
7ced9e9f GH	354	EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
	355	EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
	356	EGL_RED_SIZE, 5,
	357	EGL_GREEN_SIZE, 5,
	358	EGL_BLUE_SIZE, 5,
	359	EGL_ALPHA_SIZE, 0,
	360	EGL_NONE,
	361	};
54d208ff GH	362	static const EGLint conf_att_gles[] = {
	363	EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
	364	EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
	365	EGL_RED_SIZE, 5,
	366	EGL_GREEN_SIZE, 5,
	367	EGL_BLUE_SIZE, 5,
	368	EGL_ALPHA_SIZE, 0,
	369	EGL_NONE,
	370	};
7ced9e9f GH	371	EGLint major, minor;
	372	EGLBoolean b;
	373	EGLint n;
54d208ff	374	bool gles = (mode == DISPLAYGL_MODE_ES);
7ced9e9f	375
e1913dbb	376	qemu_egl_display = qemu_egl_get_display(dpy, platform);
7ced9e9f	377	if (qemu_egl_display == EGL_NO_DISPLAY) {
38a55bdd	378	error_report("egl: eglGetDisplay failed");
7ced9e9f GH	379	return -1;
	380	}
	381
7ced9e9f GH	382	b = eglInitialize(qemu_egl_display, &major, &minor);
7ced9e9f GH	383	if (b == EGL_FALSE) {
38a55bdd	384	error_report("egl: eglInitialize failed");
7ced9e9f GH	385	return -1;
	386	}
	387
54d208ff	388	b = eglBindAPI(gles ? EGL_OPENGL_ES_API : EGL_OPENGL_API);
7ced9e9f	389	if (b == EGL_FALSE) {
54d208ff GH	390	error_report("egl: eglBindAPI failed (%s mode)",
54d208ff GH	391	gles ? "gles" : "core");
7ced9e9f GH	392	return -1;
	393	}
	394
54d208ff GH	395	b = eglChooseConfig(qemu_egl_display,
54d208ff GH	396	gles ? conf_att_gles : conf_att_core,
7ced9e9f GH	397	&qemu_egl_config, 1, &n);
7ced9e9f GH	398	if (b == EGL_FALSE \|\| n != 1) {
54d208ff GH	399	error_report("egl: eglChooseConfig failed (%s mode)",
54d208ff GH	400	gles ? "gles" : "core");
7ced9e9f GH	401	return -1;
7ced9e9f GH	402	}
54d208ff GH	403
54d208ff GH	404	qemu_egl_mode = gles ? DISPLAYGL_MODE_ES : DISPLAYGL_MODE_CORE;
7ced9e9f GH	405	return 0;
	406	}
	407
54d208ff	408	int qemu_egl_init_dpy_x11(EGLNativeDisplayType dpy, DisplayGLMode mode)
e1913dbb GH	409	{
e1913dbb GH	410	#ifdef EGL_KHR_platform_x11
54d208ff	411	return qemu_egl_init_dpy(dpy, EGL_PLATFORM_X11_KHR, mode);
e1913dbb	412	#else
54d208ff	413	return qemu_egl_init_dpy(dpy, 0, mode);
e1913dbb GH	414	#endif
	415	}
	416
54d208ff	417	int qemu_egl_init_dpy_mesa(EGLNativeDisplayType dpy, DisplayGLMode mode)
e1913dbb GH	418	{
e1913dbb GH	419	#ifdef EGL_MESA_platform_gbm
54d208ff	420	return qemu_egl_init_dpy(dpy, EGL_PLATFORM_GBM_MESA, mode);
e1913dbb	421	#else
54d208ff	422	return qemu_egl_init_dpy(dpy, 0, mode);
e1913dbb GH	423	#endif
	424	}
	425
7ced9e9f GH	426	EGLContext qemu_egl_init_ctx(void)
7ced9e9f GH	427	{
54d208ff	428	static const EGLint ctx_att_core[] = {
bc8c946f	429	EGL_CONTEXT_OPENGL_PROFILE_MASK, EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT,
7ced9e9f GH	430	EGL_NONE
7ced9e9f GH	431	};
54d208ff GH	432	static const EGLint ctx_att_gles[] = {
	433	EGL_CONTEXT_CLIENT_VERSION, 2,
	434	EGL_NONE
	435	};
	436	bool gles = (qemu_egl_mode == DISPLAYGL_MODE_ES);
7ced9e9f GH	437	EGLContext ectx;
	438	EGLBoolean b;
	439
7ced9e9f	440	ectx = eglCreateContext(qemu_egl_display, qemu_egl_config, EGL_NO_CONTEXT,
54d208ff	441	gles ? ctx_att_gles : ctx_att_core);
7ced9e9f	442	if (ectx == EGL_NO_CONTEXT) {
38a55bdd	443	error_report("egl: eglCreateContext failed");
7ced9e9f GH	444	return NULL;
	445	}
	446
	447	b = eglMakeCurrent(qemu_egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, ectx);
	448	if (b == EGL_FALSE) {
38a55bdd	449	error_report("egl: eglMakeCurrent failed");
7ced9e9f GH	450	return NULL;
	451	}
	452
	453	return ectx;
	454	}