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

/*
 * Copyright (C) 2015-2016 Gerd Hoffmann <kraxel@redhat.com>
 *
 * 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 x1 = 0;
    GLuint y1 = 0;
    GLuint x2, y2;
    GLuint w = src->width;
    GLuint h = src->height;

    glBindFramebuffer(GL_READ_FRAMEBUFFER, src->framebuffer);
    glBindFramebuffer(GL_DRAW_FRAMEBUFFER, dst->framebuffer);
    glViewport(0, 0, dst->width, dst->height);

    if (src->dmabuf) {
        x1 = src->dmabuf->x;
        y1 = src->dmabuf->y;
        w = src->dmabuf->scanout_width;
        h = src->dmabuf->scanout_height;
    }

    w = (x1 + w) > src->width ? src->width - x1 : w;
    h = (y1 + h) > src->height ? src->height - y1 : h;

    y2 = flip ? y1 : h + y1;
    y1 = flip ? h + y1 : y1;
    x2 = x1 + w;

    glBlitFramebuffer(x1, y1, x2, y2,
                      0, 0, dst->width, dst->height,
                      GL_COLOR_BUFFER_BIT, GL_LINEAR);
}

void egl_fb_read(DisplaySurface *dst, egl_fb *src)
{
    glBindFramebuffer(GL_READ_FRAMEBUFFER, src->framebuffer);
    glReadBuffer(GL_COLOR_ATTACHMENT0_EXT);
    glReadPixels(0, 0, surface_width(dst), surface_height(dst),
                 GL_BGRA, GL_UNSIGNED_BYTE, surface_data(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, double scale_x, double scale_y)
{
    glBindFramebuffer(GL_FRAMEBUFFER_EXT, dst->framebuffer);
    int w = scale_x * src->width;
    int h = scale_y * src->height;
    if (flip) {
        glViewport(x, y, w, h);
    } else {
        glViewport(x, dst->height - h - y, w, h);
    }
    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_GBM

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,
                           EGLuint64KHR *modifier)
{
    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, modifier);
    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[64];
    int i = 0;

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

    attrs[i++] = EGL_WIDTH;
    attrs[i++] = dmabuf->width;
    attrs[i++] = EGL_HEIGHT;
    attrs[i++] = dmabuf->height;
    attrs[i++] = EGL_LINUX_DRM_FOURCC_EXT;
    attrs[i++] = dmabuf->fourcc;

    attrs[i++] = EGL_DMA_BUF_PLANE0_FD_EXT;
    attrs[i++] = dmabuf->fd;
    attrs[i++] = EGL_DMA_BUF_PLANE0_PITCH_EXT;
    attrs[i++] = dmabuf->stride;
    attrs[i++] = EGL_DMA_BUF_PLANE0_OFFSET_EXT;
    attrs[i++] = 0;
#ifdef EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT
    if (dmabuf->modifier) {
        attrs[i++] = EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT;
        attrs[i++] = (dmabuf->modifier >>  0) & 0xffffffff;
        attrs[i++] = EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT;
        attrs[i++] = (dmabuf->modifier >> 32) & 0xffffffff;
    }
#endif
    attrs[i++] = EGL_NONE;

    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;
}

void egl_dmabuf_create_sync(QemuDmaBuf *dmabuf)
{
    EGLSyncKHR sync;

    if (epoxy_has_egl_extension(qemu_egl_display,
                                "EGL_KHR_fence_sync") &&
        epoxy_has_egl_extension(qemu_egl_display,
                                "EGL_ANDROID_native_fence_sync")) {
        sync = eglCreateSyncKHR(qemu_egl_display,
                                EGL_SYNC_NATIVE_FENCE_ANDROID, NULL);
        if (sync != EGL_NO_SYNC_KHR) {
            dmabuf->sync = sync;
        }
    }
}

void egl_dmabuf_create_fence(QemuDmaBuf *dmabuf)
{
    if (dmabuf->sync) {
        dmabuf->fence_fd = eglDupNativeFenceFDANDROID(qemu_egl_display,
                                                      dmabuf->sync);
        eglDestroySyncKHR(qemu_egl_display, dmabuf->sync);
        dmabuf->sync = NULL;
    }
}

#endif /* CONFIG_GBM */

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

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

    esurface = eglCreateWindowSurface(qemu_egl_display,
                                      qemu_egl_config,
                                      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;
}

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

#if defined(CONFIG_X11) || defined(CONFIG_GBM)

/*
 * 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
}

#endif

bool qemu_egl_has_dmabuf(void)
{
    if (qemu_egl_display == EGL_NO_DISPLAY) {
        return false;
    }

    return epoxy_has_egl_extension(qemu_egl_display,
                                   "EGL_EXT_image_dma_buf_import");
}

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 <kraxel@redhat.com>
	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	{
1350ff15 DK	93	GLuint x1 = 0;
	94	GLuint y1 = 0;
	95	GLuint x2, y2;
	96	GLuint w = src->width;
	97	GLuint h = src->height;
6fafc260 GH	98
	99	glBindFramebuffer(GL_READ_FRAMEBUFFER, src->framebuffer);
	100	glBindFramebuffer(GL_DRAW_FRAMEBUFFER, dst->framebuffer);
	101	glViewport(0, 0, dst->width, dst->height);
1350ff15 DK	102
	103	if (src->dmabuf) {
	104	x1 = src->dmabuf->x;
	105	y1 = src->dmabuf->y;
	106	w = src->dmabuf->scanout_width;
	107	h = src->dmabuf->scanout_height;
	108	}
	109
	110	w = (x1 + w) > src->width ? src->width - x1 : w;
	111	h = (y1 + h) > src->height ? src->height - y1 : h;
	112
	113	y2 = flip ? y1 : h + y1;
	114	y1 = flip ? h + y1 : y1;
	115	x2 = x1 + w;
	116
	117	glBlitFramebuffer(x1, y1, x2, y2,
6fafc260 GH	118	0, 0, dst->width, dst->height,
	119	GL_COLOR_BUFFER_BIT, GL_LINEAR);
	120	}
	121
d2329237	122	void egl_fb_read(DisplaySurface dst, egl_fb src)
6fafc260 GH	123	{
	124	glBindFramebuffer(GL_READ_FRAMEBUFFER, src->framebuffer);
	125	glReadBuffer(GL_COLOR_ATTACHMENT0_EXT);
d2329237 GH	126	glReadPixels(0, 0, surface_width(dst), surface_height(dst),
d2329237 GH	127	GL_BGRA, GL_UNSIGNED_BYTE, surface_data(dst));
6fafc260 GH	128	}
6fafc260 GH	129
0eb50c27 GH	130	void egl_texture_blit(QemuGLShader gls, egl_fb dst, egl_fb *src, bool flip)
	131	{
	132	glBindFramebuffer(GL_FRAMEBUFFER_EXT, dst->framebuffer);
	133	glViewport(0, 0, dst->width, dst->height);
	134	glEnable(GL_TEXTURE_2D);
	135	glBindTexture(GL_TEXTURE_2D, src->texture);
	136	qemu_gl_run_texture_blit(gls, flip);
	137	}
	138
	139	void egl_texture_blend(QemuGLShader gls, egl_fb dst, egl_fb *src, bool flip,
051a0cde	140	int x, int y, double scale_x, double scale_y)
0eb50c27 GH	141	{
0eb50c27 GH	142	glBindFramebuffer(GL_FRAMEBUFFER_EXT, dst->framebuffer);
051a0cde CZ	143	int w = scale_x * src->width;
051a0cde CZ	144	int h = scale_y * src->height;
0eb50c27	145	if (flip) {
051a0cde	146	glViewport(x, y, w, h);
0eb50c27	147	} else {
051a0cde	148	glViewport(x, dst->height - h - y, w, h);
0eb50c27 GH	149	}
	150	glEnable(GL_TEXTURE_2D);
	151	glBindTexture(GL_TEXTURE_2D, src->texture);
	152	glEnable(GL_BLEND);
	153	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	154	qemu_gl_run_texture_blit(gls, flip);
	155	glDisable(GL_BLEND);
	156	}
	157
7ced9e9f GH	158	/* ---------------------------------------------------------------------- */
7ced9e9f GH	159
bc6a3565	160	#ifdef CONFIG_GBM
1e316598 GH	161
	162	int qemu_egl_rn_fd;
	163	struct gbm_device *qemu_egl_rn_gbm_dev;
	164	EGLContext qemu_egl_rn_ctx;
	165
54d208ff	166	int egl_rendernode_init(const char *rendernode, DisplayGLMode mode)
1e316598 GH	167	{
1e316598 GH	168	qemu_egl_rn_fd = -1;
151c8e60	169	int rc;
1e316598	170
b1d38037	171	qemu_egl_rn_fd = qemu_drm_rendernode_open(rendernode);
1e316598	172	if (qemu_egl_rn_fd == -1) {
38a55bdd	173	error_report("egl: no drm render node available");
1e316598 GH	174	goto err;
	175	}
	176
	177	qemu_egl_rn_gbm_dev = gbm_create_device(qemu_egl_rn_fd);
	178	if (!qemu_egl_rn_gbm_dev) {
38a55bdd	179	error_report("egl: gbm_create_device failed");
1e316598 GH	180	goto err;
	181	}
	182
54d208ff GH	183	rc = qemu_egl_init_dpy_mesa((EGLNativeDisplayType)qemu_egl_rn_gbm_dev,
54d208ff GH	184	mode);
151c8e60 GH	185	if (rc != 0) {
	186	/* qemu_egl_init_dpy_mesa reports error */
	187	goto err;
	188	}
1e316598 GH	189
	190	if (!epoxy_has_egl_extension(qemu_egl_display,
	191	"EGL_KHR_surfaceless_context")) {
38a55bdd	192	error_report("egl: EGL_KHR_surfaceless_context not supported");
1e316598 GH	193	goto err;
	194	}
	195	if (!epoxy_has_egl_extension(qemu_egl_display,
	196	"EGL_MESA_image_dma_buf_export")) {
38a55bdd	197	error_report("egl: EGL_MESA_image_dma_buf_export not supported");
1e316598 GH	198	goto err;
	199	}
	200
	201	qemu_egl_rn_ctx = qemu_egl_init_ctx();
	202	if (!qemu_egl_rn_ctx) {
38a55bdd	203	error_report("egl: egl_init_ctx failed");
1e316598 GH	204	goto err;
	205	}
	206
	207	return 0;
	208
	209	err:
	210	if (qemu_egl_rn_gbm_dev) {
	211	gbm_device_destroy(qemu_egl_rn_gbm_dev);
	212	}
	213	if (qemu_egl_rn_fd != -1) {
	214	close(qemu_egl_rn_fd);
	215	}
	216
	217	return -1;
	218	}
	219
5fc1fb62 GH	220	int egl_get_fd_for_texture(uint32_t tex_id, EGLint stride, EGLint fourcc,
5fc1fb62 GH	221	EGLuint64KHR *modifier)
1e316598 GH	222	{
	223	EGLImageKHR image;
	224	EGLint num_planes, fd;
	225
	226	image = eglCreateImageKHR(qemu_egl_display, eglGetCurrentContext(),
	227	EGL_GL_TEXTURE_2D_KHR,
	228	(EGLClientBuffer)(unsigned long)tex_id,
	229	NULL);
	230	if (!image) {
	231	return -1;
	232	}
	233
	234	eglExportDMABUFImageQueryMESA(qemu_egl_display, image, fourcc,
5fc1fb62	235	&num_planes, modifier);
1e316598 GH	236	if (num_planes != 1) {
	237	eglDestroyImageKHR(qemu_egl_display, image);
	238	return -1;
	239	}
	240	eglExportDMABUFImageMESA(qemu_egl_display, image, &fd, stride, NULL);
	241	eglDestroyImageKHR(qemu_egl_display, image);
	242
	243	return fd;
	244	}
	245
86c0522c GH	246	void egl_dmabuf_import_texture(QemuDmaBuf *dmabuf)
	247	{
	248	EGLImageKHR image = EGL_NO_IMAGE_KHR;
15ee0d9b GH	249	EGLint attrs[64];
15ee0d9b GH	250	int i = 0;
86c0522c GH	251
	252	if (dmabuf->texture != 0) {
	253	return;
	254	}
	255
15ee0d9b GH	256	attrs[i++] = EGL_WIDTH;
	257	attrs[i++] = dmabuf->width;
	258	attrs[i++] = EGL_HEIGHT;
	259	attrs[i++] = dmabuf->height;
	260	attrs[i++] = EGL_LINUX_DRM_FOURCC_EXT;
	261	attrs[i++] = dmabuf->fourcc;
	262
	263	attrs[i++] = EGL_DMA_BUF_PLANE0_FD_EXT;
	264	attrs[i++] = dmabuf->fd;
	265	attrs[i++] = EGL_DMA_BUF_PLANE0_PITCH_EXT;
	266	attrs[i++] = dmabuf->stride;
	267	attrs[i++] = EGL_DMA_BUF_PLANE0_OFFSET_EXT;
	268	attrs[i++] = 0;
	269	#ifdef EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT
	270	if (dmabuf->modifier) {
	271	attrs[i++] = EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT;
	272	attrs[i++] = (dmabuf->modifier >> 0) & 0xffffffff;
	273	attrs[i++] = EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT;
	274	attrs[i++] = (dmabuf->modifier >> 32) & 0xffffffff;
	275	}
	276	#endif
	277	attrs[i++] = EGL_NONE;
	278
86c0522c GH	279	image = eglCreateImageKHR(qemu_egl_display,
	280	EGL_NO_CONTEXT,
	281	EGL_LINUX_DMA_BUF_EXT,
	282	NULL, attrs);
	283	if (image == EGL_NO_IMAGE_KHR) {
	284	error_report("eglCreateImageKHR failed");
	285	return;
	286	}
	287
	288	glGenTextures(1, &dmabuf->texture);
	289	glBindTexture(GL_TEXTURE_2D, dmabuf->texture);
	290	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
	291	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
	292
	293	glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, (GLeglImageOES)image);
	294	eglDestroyImageKHR(qemu_egl_display, image);
	295	}
	296
	297	void egl_dmabuf_release_texture(QemuDmaBuf *dmabuf)
	298	{
	299	if (dmabuf->texture == 0) {
	300	return;
	301	}
	302
	303	glDeleteTextures(1, &dmabuf->texture);
	304	dmabuf->texture = 0;
	305	}
	306
121abaf3 VK	307	void egl_dmabuf_create_sync(QemuDmaBuf *dmabuf)
	308	{
	309	EGLSyncKHR sync;
	310
	311	if (epoxy_has_egl_extension(qemu_egl_display,
	312	"EGL_KHR_fence_sync") &&
	313	epoxy_has_egl_extension(qemu_egl_display,
	314	"EGL_ANDROID_native_fence_sync")) {
	315	sync = eglCreateSyncKHR(qemu_egl_display,
	316	EGL_SYNC_NATIVE_FENCE_ANDROID, NULL);
	317	if (sync != EGL_NO_SYNC_KHR) {
	318	dmabuf->sync = sync;
	319	}
	320	}
	321	}
	322
	323	void egl_dmabuf_create_fence(QemuDmaBuf *dmabuf)
	324	{
	325	if (dmabuf->sync) {
	326	dmabuf->fence_fd = eglDupNativeFenceFDANDROID(qemu_egl_display,
	327	dmabuf->sync);
	328	eglDestroySyncKHR(qemu_egl_display, dmabuf->sync);
	329	dmabuf->sync = NULL;
	330	}
	331	}
	332
bc6a3565	333	#endif /* CONFIG_GBM */
1e316598 GH	334
	335	/* ---------------------------------------------------------------------- */
	336
fbd57c75	337	EGLSurface qemu_egl_init_surface_x11(EGLContext ectx, EGLNativeWindowType win)
7ced9e9f GH	338	{
	339	EGLSurface esurface;
	340	EGLBoolean b;
	341
7ced9e9f GH	342	esurface = eglCreateWindowSurface(qemu_egl_display,
7ced9e9f GH	343	qemu_egl_config,
fbd57c75	344	win, NULL);
7ced9e9f	345	if (esurface == EGL_NO_SURFACE) {
38a55bdd	346	error_report("egl: eglCreateWindowSurface failed");
7ced9e9f GH	347	return NULL;
	348	}
	349
	350	b = eglMakeCurrent(qemu_egl_display, esurface, esurface, ectx);
	351	if (b == EGL_FALSE) {
38a55bdd	352	error_report("egl: eglMakeCurrent failed");
7ced9e9f GH	353	return NULL;
	354	}
	355
	356	return esurface;
	357	}
	358
	359	/* ---------------------------------------------------------------------- */
	360
bc6a3565 AO	361	#if defined(CONFIG_X11) \|\| defined(CONFIG_GBM)
bc6a3565 AO	362
8bce03e3 GH	363	/*
	364	* Taken from glamor_egl.h from the Xorg xserver, which is MIT licensed
	365	*
	366	* Create an EGLDisplay from a native display type. This is a little quirky
	367	* for a few reasons.
	368	*
	369	* 1: GetPlatformDisplayEXT and GetPlatformDisplay are the API you want to
	370	* use, but have different function signatures in the third argument; this
	371	* happens not to matter for us, at the moment, but it means epoxy won't alias
	372	* them together.
	373	*
	374	* 2: epoxy 1.3 and earlier don't understand EGL client extensions, which
	375	* means you can't call "eglGetPlatformDisplayEXT" directly, as the resolver
	376	* will crash.
	377	*
	378	* 3: You can't tell whether you have EGL 1.5 at this point, because
	379	* eglQueryString(EGL_VERSION) is a property of the display, which we don't
	380	* have yet. So you have to query for extensions no matter what. Fortunately
	381	* epoxy_has_egl_extension _does_ let you query for client extensions, so
	382	* we don't have to write our own extension string parsing.
	383	*
	384	* 4. There is no EGL_KHR_platform_base to complement the EXT one, thus one
	385	* needs to know EGL 1.5 is supported in order to use the eglGetPlatformDisplay
	386	* function pointer.
	387	* We can workaround this (circular dependency) by probing for the EGL 1.5
	388	* platform extensions (EGL_KHR_platform_gbm and friends) yet it doesn't seem
	389	* like mesa will be able to advertise these (even though it can do EGL 1.5).
	390	*/
e1913dbb GH	391	static EGLDisplay qemu_egl_get_display(EGLNativeDisplayType native,
e1913dbb GH	392	EGLenum platform)
8bce03e3 GH	393	{
	394	EGLDisplay dpy = EGL_NO_DISPLAY;
	395
8bce03e3 GH	396	/* In practise any EGL 1.5 implementation would support the EXT extension */
	397	if (epoxy_has_egl_extension(NULL, "EGL_EXT_platform_base")) {
	398	PFNEGLGETPLATFORMDISPLAYEXTPROC getPlatformDisplayEXT =
	399	(void *) eglGetProcAddress("eglGetPlatformDisplayEXT");
e1913dbb GH	400	if (getPlatformDisplayEXT && platform != 0) {
e1913dbb GH	401	dpy = getPlatformDisplayEXT(platform, native, NULL);
8bce03e3 GH	402	}
8bce03e3 GH	403	}
8bce03e3 GH	404
	405	if (dpy == EGL_NO_DISPLAY) {
	406	/* fallback */
	407	dpy = eglGetDisplay(native);
	408	}
	409	return dpy;
	410	}
	411
e1913dbb	412	static int qemu_egl_init_dpy(EGLNativeDisplayType dpy,
54d208ff GH	413	EGLenum platform,
54d208ff GH	414	DisplayGLMode mode)
7ced9e9f	415	{
54d208ff	416	static const EGLint conf_att_core[] = {
7ced9e9f GH	417	EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
	418	EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
	419	EGL_RED_SIZE, 5,
	420	EGL_GREEN_SIZE, 5,
	421	EGL_BLUE_SIZE, 5,
	422	EGL_ALPHA_SIZE, 0,
	423	EGL_NONE,
	424	};
54d208ff GH	425	static const EGLint conf_att_gles[] = {
	426	EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
	427	EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
	428	EGL_RED_SIZE, 5,
	429	EGL_GREEN_SIZE, 5,
	430	EGL_BLUE_SIZE, 5,
	431	EGL_ALPHA_SIZE, 0,
	432	EGL_NONE,
	433	};
7ced9e9f GH	434	EGLint major, minor;
	435	EGLBoolean b;
	436	EGLint n;
54d208ff	437	bool gles = (mode == DISPLAYGL_MODE_ES);
7ced9e9f	438
e1913dbb	439	qemu_egl_display = qemu_egl_get_display(dpy, platform);
7ced9e9f	440	if (qemu_egl_display == EGL_NO_DISPLAY) {
38a55bdd	441	error_report("egl: eglGetDisplay failed");
7ced9e9f GH	442	return -1;
	443	}
	444
7ced9e9f GH	445	b = eglInitialize(qemu_egl_display, &major, &minor);
7ced9e9f GH	446	if (b == EGL_FALSE) {
38a55bdd	447	error_report("egl: eglInitialize failed");
7ced9e9f GH	448	return -1;
	449	}
	450
54d208ff	451	b = eglBindAPI(gles ? EGL_OPENGL_ES_API : EGL_OPENGL_API);
7ced9e9f	452	if (b == EGL_FALSE) {
54d208ff GH	453	error_report("egl: eglBindAPI failed (%s mode)",
54d208ff GH	454	gles ? "gles" : "core");
7ced9e9f GH	455	return -1;
	456	}
	457
54d208ff GH	458	b = eglChooseConfig(qemu_egl_display,
54d208ff GH	459	gles ? conf_att_gles : conf_att_core,
7ced9e9f GH	460	&qemu_egl_config, 1, &n);
7ced9e9f GH	461	if (b == EGL_FALSE \|\| n != 1) {
54d208ff GH	462	error_report("egl: eglChooseConfig failed (%s mode)",
54d208ff GH	463	gles ? "gles" : "core");
7ced9e9f GH	464	return -1;
7ced9e9f GH	465	}
54d208ff GH	466
54d208ff GH	467	qemu_egl_mode = gles ? DISPLAYGL_MODE_ES : DISPLAYGL_MODE_CORE;
7ced9e9f GH	468	return 0;
	469	}
	470
54d208ff	471	int qemu_egl_init_dpy_x11(EGLNativeDisplayType dpy, DisplayGLMode mode)
e1913dbb GH	472	{
e1913dbb GH	473	#ifdef EGL_KHR_platform_x11
54d208ff	474	return qemu_egl_init_dpy(dpy, EGL_PLATFORM_X11_KHR, mode);
e1913dbb	475	#else
54d208ff	476	return qemu_egl_init_dpy(dpy, 0, mode);
e1913dbb GH	477	#endif
	478	}
	479
54d208ff	480	int qemu_egl_init_dpy_mesa(EGLNativeDisplayType dpy, DisplayGLMode mode)
e1913dbb GH	481	{
e1913dbb GH	482	#ifdef EGL_MESA_platform_gbm
54d208ff	483	return qemu_egl_init_dpy(dpy, EGL_PLATFORM_GBM_MESA, mode);
e1913dbb	484	#else
54d208ff	485	return qemu_egl_init_dpy(dpy, 0, mode);
e1913dbb GH	486	#endif
	487	}
	488
bc6a3565 AO	489	#endif
bc6a3565 AO	490
0df5c72b MAL	491	bool qemu_egl_has_dmabuf(void)
	492	{
	493	if (qemu_egl_display == EGL_NO_DISPLAY) {
	494	return false;
	495	}
	496
	497	return epoxy_has_egl_extension(qemu_egl_display,
	498	"EGL_EXT_image_dma_buf_import");
	499	}
	500
7ced9e9f GH	501	EGLContext qemu_egl_init_ctx(void)
7ced9e9f GH	502	{
54d208ff	503	static const EGLint ctx_att_core[] = {
bc8c946f	504	EGL_CONTEXT_OPENGL_PROFILE_MASK, EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT,
7ced9e9f GH	505	EGL_NONE
7ced9e9f GH	506	};
54d208ff GH	507	static const EGLint ctx_att_gles[] = {
	508	EGL_CONTEXT_CLIENT_VERSION, 2,
	509	EGL_NONE
	510	};
	511	bool gles = (qemu_egl_mode == DISPLAYGL_MODE_ES);
7ced9e9f GH	512	EGLContext ectx;
	513	EGLBoolean b;
	514
7ced9e9f	515	ectx = eglCreateContext(qemu_egl_display, qemu_egl_config, EGL_NO_CONTEXT,
54d208ff	516	gles ? ctx_att_gles : ctx_att_core);
7ced9e9f	517	if (ectx == EGL_NO_CONTEXT) {
38a55bdd	518	error_report("egl: eglCreateContext failed");
7ced9e9f GH	519	return NULL;
	520	}
	521
	522	b = eglMakeCurrent(qemu_egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE, ectx);
	523	if (b == EGL_FALSE) {
38a55bdd	524	error_report("egl: eglMakeCurrent failed");
7ced9e9f GH	525	return NULL;
	526	}
	527
	528	return ectx;
	529	}