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LookingGlass/client/renderers/EGL/egl.c

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/**
* Looking Glass
* Copyright (C) 2017-2021 The Looking Glass Authors
* https://looking-glass.io
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program 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 General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc., 59
* Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "interface/renderer.h"
#include "common/debug.h"
#include "common/KVMFR.h"
#include "common/option.h"
#include "common/sysinfo.h"
#include "common/time.h"
#include "common/locking.h"
#include "app.h"
#include "util.h"
#include <EGL/egl.h>
#include <GLES3/gl32.h>
#include "cimgui.h"
#include "generator/output/cimgui_impl.h"
#include <assert.h>
#include <math.h>
#include <string.h>
#include "app.h"
#include "egl_dynprocs.h"
#include "model.h"
#include "shader.h"
#include "damage.h"
#include "desktop.h"
#include "cursor.h"
#include "splash.h"
#define SPLASH_FADE_TIME 1000000
struct Options
{
bool vsync;
bool doubleBuffer;
};
struct Inst
{
bool dmaSupport;
LG_RendererParams params;
struct Options opt;
EGLNativeWindowType nativeWind;
EGLDisplay display;
EGLConfig configs;
EGLSurface surface;
EGLContext context, frameContext;
EGL_Desktop * desktop; // the desktop
EGL_Cursor * cursor; // the mouse cursor
EGL_Splash * splash; // the splash screen
EGL_Damage * damage; // the damage display
bool imgui; // if imgui was initialized
LG_RendererFormat format;
bool formatValid;
bool start;
uint64_t waitFadeTime;
bool waitDone;
int width, height;
float uiScale;
LG_RendererRect destRect;
LG_RendererRotate rotate; //client side rotation
float translateX , translateY;
float scaleX , scaleY;
float splashRatio;
float screenScaleX, screenScaleY;
int viewportWidth, viewportHeight;
enum EGL_DesktopScaleType scaleType;
bool cursorVisible;
int cursorX , cursorY;
float mouseWidth , mouseHeight;
float mouseScaleX, mouseScaleY;
bool showDamage;
struct CursorState cursorLast;
bool hadOverlay;
_Atomic(struct DesktopDamage *) desktopDamage;
RingBuffer importTimings;
GraphHandle importGraph;
};
static struct Option egl_options[] =
{
{
.module = "egl",
.name = "vsync",
.description = "Enable vsync",
.type = OPTION_TYPE_BOOL,
.value.x_bool = false,
},
{
.module = "egl",
.name = "doubleBuffer",
.description = "Enable double buffering",
.type = OPTION_TYPE_BOOL,
.value.x_bool = false
},
{
.module = "egl",
.name = "multisample",
.description = "Enable Multisampling",
.type = OPTION_TYPE_BOOL,
.value.x_bool = true
},
{
.module = "egl",
.name = "nvGainMax",
.description = "The maximum night vision gain",
.type = OPTION_TYPE_INT,
.value.x_int = 1
},
{
.module = "egl",
.name = "nvGain",
.description = "The initial night vision gain at startup",
.type = OPTION_TYPE_INT,
.value.x_int = 0
},
{
.module = "egl",
.name = "cbMode",
.description = "Color Blind Mode (0 = Off, 1 = Protanope, 2 = Deuteranope, 3 = Tritanope)",
.type = OPTION_TYPE_INT,
.value.x_int = 0
},
{
.module = "egl",
.name = "scale",
.description = "Set the scale algorithm (0 = auto, 1 = nearest, 2 = linear)",
.type = OPTION_TYPE_INT,
.validator = egl_desktop_scale_validate,
.value.x_int = 0
},
{
.module = "egl",
.name = "debug",
.description = "Enable debug output",
.type = OPTION_TYPE_BOOL,
.value.x_bool = false
},
{0}
};
static const char * egl_get_name(void)
{
return "EGL";
}
static void egl_setup(void)
{
option_register(egl_options);
}
static bool egl_create(void ** opaque, const LG_RendererParams params, bool * needsOpenGL)
{
// check if EGL is even available
if (!eglQueryString(EGL_NO_DISPLAY, EGL_VERSION))
return false;
// create our local storage
*opaque = calloc(1, sizeof(struct Inst));
if (!*opaque)
{
DEBUG_INFO("Failed to allocate %lu bytes", sizeof(struct Inst));
return false;
}
// safe off parameteres and init our default option values
struct Inst * this = (struct Inst *)*opaque;
memcpy(&this->params, &params, sizeof(LG_RendererParams));
this->opt.vsync = option_get_bool("egl", "vsync");
this->opt.doubleBuffer = option_get_bool("egl", "doubleBuffer");
this->translateX = 0;
this->translateY = 0;
this->scaleX = 1.0f;
this->scaleY = 1.0f;
this->screenScaleX = 1.0f;
this->screenScaleY = 1.0f;
this->uiScale = 1.0;
atomic_init(&this->desktopDamage, NULL);
this->importTimings = ringbuffer_new(256, sizeof(float));
this->importGraph = app_registerGraph("IMPORT", this->importTimings, 0.0f, 5.0f);
*needsOpenGL = false;
return true;
}
static bool egl_initialize(void * opaque)
{
struct Inst * this = (struct Inst *)opaque;
DEBUG_INFO("Double buffering is %s", this->opt.doubleBuffer ? "on" : "off");
return true;
}
static void egl_deinitialize(void * opaque)
{
struct Inst * this = (struct Inst *)opaque;
if (this->imgui)
ImGui_ImplOpenGL3_Shutdown();
app_unregisterGraph(this->importGraph);
ringbuffer_free(&this->importTimings);
egl_desktop_free(&this->desktop);
egl_cursor_free (&this->cursor);
egl_splash_free (&this->splash);
egl_damage_free (&this->damage);
LG_LOCK_FREE(this->lock);
eglMakeCurrent(this->display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
if (this->frameContext)
eglDestroyContext(this->display, this->frameContext);
if (this->context)
eglDestroyContext(this->display, this->context);
eglTerminate(this->display);
free(this);
}
static bool egl_supports(void * opaque, LG_RendererSupport flag)
{
struct Inst * this = (struct Inst *)opaque;
switch(flag)
{
case LG_SUPPORTS_DMABUF:
return this->dmaSupport;
default:
return false;
}
}
static void egl_on_restart(void * opaque)
{
struct Inst * this = (struct Inst *)opaque;
eglDestroyContext(this->display, this->frameContext);
this->frameContext = NULL;
this->start = false;
}
static void egl_calc_mouse_size(struct Inst * this)
{
if (!this->formatValid)
return;
int w = 0, h = 0;
switch(this->format.rotate)
{
case LG_ROTATE_0:
case LG_ROTATE_180:
this->mouseScaleX = 2.0f / this->format.width;
this->mouseScaleY = 2.0f / this->format.height;
w = this->format.width;
h = this->format.height;
break;
case LG_ROTATE_90:
case LG_ROTATE_270:
this->mouseScaleX = 2.0f / this->format.height;
this->mouseScaleY = 2.0f / this->format.width;
w = this->format.height;
h = this->format.width;
break;
default:
assert(!"unreachable");
}
switch((this->format.rotate + this->rotate) % LG_ROTATE_MAX)
{
case LG_ROTATE_0:
case LG_ROTATE_180:
egl_cursor_set_size(this->cursor,
(this->mouseWidth * (1.0f / w)) * this->scaleX,
(this->mouseHeight * (1.0f / h)) * this->scaleY
);
break;
case LG_ROTATE_90:
case LG_ROTATE_270:
egl_cursor_set_size(this->cursor,
(this->mouseWidth * (1.0f / w)) * this->scaleY,
(this->mouseHeight * (1.0f / h)) * this->scaleX
);
break;
}
}
static void egl_calc_mouse_state(struct Inst * this)
{
if (!this->formatValid)
return;
switch((this->format.rotate + this->rotate) % LG_ROTATE_MAX)
{
case LG_ROTATE_0:
case LG_ROTATE_180:
egl_cursor_set_state(
this->cursor,
this->cursorVisible,
(((float)this->cursorX * this->mouseScaleX) - 1.0f) * this->scaleX,
(((float)this->cursorY * this->mouseScaleY) - 1.0f) * this->scaleY
);
break;
case LG_ROTATE_90:
case LG_ROTATE_270:
egl_cursor_set_state(
this->cursor,
this->cursorVisible,
(((float)this->cursorX * this->mouseScaleX) - 1.0f) * this->scaleY,
(((float)this->cursorY * this->mouseScaleY) - 1.0f) * this->scaleX
);
break;
}
}
static void egl_update_scale_type(struct Inst * this)
{
int width = 0, height = 0;
switch (this->rotate)
{
case LG_ROTATE_0:
case LG_ROTATE_180:
width = this->format.width;
height = this->format.height;
break;
case LG_ROTATE_90:
case LG_ROTATE_270:
width = this->format.height;
height = this->format.width;
break;
}
if (width == this->viewportWidth || height == this->viewportHeight)
this->scaleType = EGL_DESKTOP_NOSCALE;
else if (width > this->viewportWidth || height > this->viewportHeight)
this->scaleType = EGL_DESKTOP_DOWNSCALE;
else
this->scaleType = EGL_DESKTOP_UPSCALE;
}
static void egl_on_resize(void * opaque, const int width, const int height, const double scale,
const LG_RendererRect destRect, LG_RendererRotate rotate)
{
struct Inst * this = (struct Inst *)opaque;
this->width = width * scale;
this->height = height * scale;
this->uiScale = (float) scale;
this->rotate = rotate;
this->destRect.x = destRect.x * scale;
this->destRect.y = destRect.y * scale;
this->destRect.w = destRect.w * scale;
this->destRect.h = destRect.h * scale;
glViewport(0, 0, this->width, this->height);
if (destRect.valid)
{
this->translateX = 1.0f - (((this->destRect.w / 2) + this->destRect.x) * 2) / (float)this->width;
this->translateY = 1.0f - (((this->destRect.h / 2) + this->destRect.y) * 2) / (float)this->height;
this->scaleX = (float)this->destRect.w / (float)this->width;
this->scaleY = (float)this->destRect.h / (float)this->height;
this->viewportWidth = this->destRect.w;
this->viewportHeight = this->destRect.h;
}
egl_update_scale_type(this);
egl_calc_mouse_size(this);
this->splashRatio = (float)width / (float)height;
this->screenScaleX = 1.0f / this->width;
this->screenScaleY = 1.0f / this->height;
egl_calc_mouse_state(this);
struct DesktopDamage * damage = malloc(sizeof(struct DesktopDamage));
if (!damage)
{
DEBUG_FATAL("Out of memory");
abort();
}
damage->count = 0;
free(atomic_exchange(&this->desktopDamage, damage));
// this is needed to refresh the font atlas texture
ImGui_ImplOpenGL3_Shutdown();
ImGui_ImplOpenGL3_NewFrame();
egl_damage_resize(this->damage, this->translateX, this->translateY, this->scaleX, this->scaleY);
}
static bool egl_on_mouse_shape(void * opaque, const LG_RendererCursor cursor,
const int width, const int height,
const int pitch, const uint8_t * data)
{
struct Inst * this = (struct Inst *)opaque;
if (!egl_cursor_set_shape(this->cursor, cursor, width, height, pitch, data))
{
DEBUG_ERROR("Failed to update the cursor shape");
return false;
}
this->mouseWidth = width;
this->mouseHeight = height;
egl_calc_mouse_size(this);
return true;
}
static bool egl_on_mouse_event(void * opaque, const bool visible, const int x, const int y)
{
struct Inst * this = (struct Inst *)opaque;
this->cursorVisible = visible;
this->cursorX = x;
this->cursorY = y;
egl_calc_mouse_state(this);
return true;
}
static bool egl_on_frame_format(void * opaque, const LG_RendererFormat format, bool useDMA)
{
struct Inst * this = (struct Inst *)opaque;
memcpy(&this->format, &format, sizeof(LG_RendererFormat));
this->formatValid = true;
/* this event runs in a second thread so we need to init it here */
if (!this->frameContext)
{
static EGLint attrs[] = {
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
};
if (!(this->frameContext = eglCreateContext(this->display, this->configs, this->context, attrs)))
{
DEBUG_ERROR("Failed to create the frame context");
return false;
}
if (!eglMakeCurrent(this->display, EGL_NO_SURFACE, EGL_NO_SURFACE, this->frameContext))
{
DEBUG_ERROR("Failed to make the frame context current");
return false;
}
}
egl_update_scale_type(this);
egl_damage_setup(this->damage, format.width, format.height);
return egl_desktop_setup(this->desktop, format, useDMA);
}
static bool egl_on_frame(void * opaque, const FrameBuffer * frame, int dmaFd,
const FrameDamageRect * damageRects, int damageRectsCount)
{
struct Inst * this = (struct Inst *)opaque;
uint64_t start = nanotime();
if (!egl_desktop_update(this->desktop, frame, dmaFd))
{
DEBUG_INFO("Failed to to update the desktop");
return false;
}
ringbuffer_push(this->importTimings, &(float){ (nanotime() - start) * 1e-6f });
this->start = true;
struct DesktopDamage * damage = malloc(sizeof(struct DesktopDamage));
if (!damage)
{
DEBUG_FATAL("Out of memory");
abort();
}
damage->count = damageRectsCount;
memcpy(damage->rects, damageRects, damageRectsCount * sizeof(FrameDamageRect));
free(atomic_exchange(&this->desktopDamage, damage));
return true;
}
static void debugCallback(GLenum source, GLenum type, GLuint id,
GLenum severity, GLsizei length, const GLchar * message,
const void * userParam)
{
enum DebugLevel level = DEBUG_LEVEL_FIXME;
switch (severity)
{
case GL_DEBUG_SEVERITY_HIGH:
level = DEBUG_LEVEL_ERROR;
break;
case GL_DEBUG_SEVERITY_MEDIUM:
level = DEBUG_LEVEL_WARN;
break;
case GL_DEBUG_SEVERITY_LOW:
case GL_DEBUG_SEVERITY_NOTIFICATION:
level = DEBUG_LEVEL_INFO;
break;
}
const char * sourceName = "unknown";
switch (source)
{
case GL_DEBUG_SOURCE_API:
sourceName = "OpenGL API";
break;
case GL_DEBUG_SOURCE_WINDOW_SYSTEM:
sourceName = "window system";
break;
case GL_DEBUG_SOURCE_SHADER_COMPILER:
sourceName = "shader compiler";
break;
case GL_DEBUG_SOURCE_THIRD_PARTY:
sourceName = "third party";
break;
case GL_DEBUG_SOURCE_APPLICATION:
sourceName = "application";
break;
case GL_DEBUG_SOURCE_OTHER:
sourceName = "other";
break;
}
const char * typeName = "unknown";
switch (type)
{
case GL_DEBUG_TYPE_ERROR:
typeName = "error";
break;
case GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR:
typeName = "deprecated behaviour";
break;
case GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR:
typeName = "undefined behaviour";
break;
case GL_DEBUG_TYPE_PORTABILITY:
typeName = "portability";
break;
case GL_DEBUG_TYPE_PERFORMANCE:
typeName = "performance";
break;
case GL_DEBUG_TYPE_MARKER:
typeName = "marker";
break;
case GL_DEBUG_TYPE_PUSH_GROUP:
typeName = "group pushing";
break;
case GL_DEBUG_TYPE_POP_GROUP:
typeName = "group popping";
break;
case GL_DEBUG_TYPE_OTHER:
typeName = "other";
break;
}
DEBUG_PRINT(level, "GL message (source: %s, type: %s): %s", sourceName, typeName, message);
}
static bool egl_render_startup(void * opaque)
{
struct Inst * this = (struct Inst *)opaque;
this->nativeWind = app_getEGLNativeWindow();
if (!this->nativeWind)
return false;
this->display = app_getEGLDisplay();
if (this->display == EGL_NO_DISPLAY)
return false;
int maj, min;
if (!eglInitialize(this->display, &maj, &min))
{
DEBUG_ERROR("Unable to initialize EGL");
return false;
}
int maxSamples = 1;
if (option_get_bool("egl", "multisample"))
{
if (app_getProp(LG_DS_MAX_MULTISAMPLE, &maxSamples) && maxSamples > 1)
{
if (maxSamples > 4)
maxSamples = 4;
DEBUG_INFO("Multisampling enabled, max samples: %d", maxSamples);
}
}
EGLint attr[] =
{
EGL_BUFFER_SIZE , 24,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_SAMPLE_BUFFERS , maxSamples > 0 ? 1 : 0,
EGL_SAMPLES , maxSamples,
EGL_NONE
};
EGLint num_config;
if (!eglChooseConfig(this->display, attr, &this->configs, 1, &num_config))
{
DEBUG_ERROR("Failed to choose config (eglError: 0x%x)", eglGetError());
return false;
}
const EGLint surfattr[] =
{
EGL_RENDER_BUFFER, this->opt.doubleBuffer ? EGL_BACK_BUFFER : EGL_SINGLE_BUFFER,
EGL_NONE
};
this->surface = eglCreateWindowSurface(this->display, this->configs, this->nativeWind, surfattr);
if (this->surface == EGL_NO_SURFACE)
{
DEBUG_ERROR("Failed to create EGL surface (eglError: 0x%x)", eglGetError());
return false;
}
bool debugContext = option_get_bool("egl", "debug");
EGLint ctxattr[] =
{
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_CONTEXT_OPENGL_DEBUG , debugContext ? EGL_TRUE : EGL_FALSE,
EGL_NONE
};
this->context = eglCreateContext(this->display, this->configs, EGL_NO_CONTEXT, ctxattr);
if (this->context == EGL_NO_CONTEXT)
{
DEBUG_ERROR("Failed to create EGL context (eglError: 0x%x)", eglGetError());
return false;
}
EGLint rb = 0;
eglQuerySurface(this->display, this->surface, EGL_RENDER_BUFFER, &rb);
switch(rb)
{
case EGL_SINGLE_BUFFER:
DEBUG_INFO("Single buffer mode");
break;
case EGL_BACK_BUFFER:
DEBUG_INFO("Back buffer mode");
break;
default:
DEBUG_WARN("Unknown render buffer mode: %d", rb);
break;
}
eglMakeCurrent(this->display, this->surface, this->surface, this->context);
const char *client_exts = eglQueryString(this->display, EGL_EXTENSIONS);
const char *gl_exts = (const char *)glGetString(GL_EXTENSIONS);
const char *vendor = (const char *)glGetString(GL_VENDOR);
DEBUG_INFO("EGL : %d.%d", maj, min);
DEBUG_INFO("Vendor : %s", vendor);
DEBUG_INFO("Renderer: %s", glGetString(GL_RENDERER));
DEBUG_INFO("Version : %s", glGetString(GL_VERSION ));
DEBUG_INFO("EGL APIs: %s", eglQueryString(this->display, EGL_CLIENT_APIS));
DEBUG_INFO("EGL Exts: %s", client_exts);
DEBUG_INFO("GL Exts : %s", gl_exts);
GLint esMaj, esMin;
glGetIntegerv(GL_MAJOR_VERSION, &esMaj);
glGetIntegerv(GL_MINOR_VERSION, &esMin);
if (!util_hasGLExt(gl_exts, "GL_EXT_buffer_storage"))
{
DEBUG_ERROR("GL_EXT_buffer_storage is needed to use EGL backend");
return false;
}
if (!util_hasGLExt(gl_exts, "GL_EXT_texture_format_BGRA8888"))
{
DEBUG_ERROR("GL_EXT_texture_format_BGRA8888 is needed to use EGL backend");
return false;
}
if (g_egl_dynProcs.glEGLImageTargetTexture2DOES)
{
if (util_hasGLExt(client_exts, "EGL_EXT_image_dma_buf_import"))
{
/*
* As of version 455.45.01 NVidia started advertising support for this
* feature, however even on the latest version 460.27.04 this is still
* broken and does not work, until this is fixed and we have way to detect
* this early just disable dma for all NVIDIA devices.
*
* ref: https://forums.developer.nvidia.com/t/egl-ext-image-dma-buf-import-broken-egl-bad-alloc-with-tons-of-free-ram/165552
*/
if (strstr(vendor, "NVIDIA") != NULL)
DEBUG_WARN("NVIDIA driver detected, ignoring broken DMA support");
else
this->dmaSupport = true;
}
else
DEBUG_INFO("EGL_EXT_image_dma_buf_import unavailable, DMA support disabled");
}
else
DEBUG_INFO("glEGLImageTargetTexture2DOES unavilable, DMA support disabled");
if (debugContext)
{
if ((esMaj > 3 || (esMaj == 3 && esMin >= 2)) && g_egl_dynProcs.glDebugMessageCallback)
{
g_egl_dynProcs.glDebugMessageCallback(debugCallback, NULL);
DEBUG_INFO("Using debug message callback from OpenGL ES 3.2+");
}
else if (util_hasGLExt(gl_exts, "GL_KHR_debug") && g_egl_dynProcs.glDebugMessageCallbackKHR)
{
g_egl_dynProcs.glDebugMessageCallbackKHR(debugCallback, NULL);
DEBUG_INFO("Using debug message callback from GL_KHR_debug");
}
else
DEBUG_INFO("Debug message callback not supported");
}
else
DEBUG_INFO("Debug messages disabled, enable with egl:debug=true");
eglSwapInterval(this->display, this->opt.vsync ? 1 : 0);
if (!egl_desktop_init(&this->desktop, this->display))
{
DEBUG_ERROR("Failed to initialize the desktop");
return false;
}
if (!egl_cursor_init(&this->cursor))
{
DEBUG_ERROR("Failed to initialize the cursor");
return false;
}
if (!egl_splash_init(&this->splash))
{
DEBUG_ERROR("Failed to initialize the splash screen");
return false;
}
if (!egl_damage_init(&this->damage))
{
DEBUG_ERROR("Failed to initialize the damage display");
return false;
}
if (!ImGui_ImplOpenGL3_Init("#version 300 es"))
{
DEBUG_ERROR("Failed to initialize ImGui");
return false;
}
this->imgui = true;
return true;
}
static bool egl_render(void * opaque, LG_RendererRotate rotate, const bool newFrame,
const bool invalidateWindow)
{
struct Inst * this = (struct Inst *)opaque;
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
bool hasOverlay = false;
struct CursorState cursorState = { .visible = false };
struct DesktopDamage * desktopDamage = NULL;
if (this->start)
{
desktopDamage = atomic_exchange(&this->desktopDamage, NULL);
if (egl_desktop_render(this->desktop,
this->translateX, this->translateY,
this->scaleX , this->scaleY ,
this->scaleType , rotate))
{
if (!this->waitFadeTime)
{
if (!this->params.quickSplash)
this->waitFadeTime = microtime() + SPLASH_FADE_TIME;
else
this->waitDone = true;
}
cursorState = egl_cursor_render(this->cursor,
(this->format.rotate + rotate) % LG_ROTATE_MAX,
this->width, this->height);
}
else
desktopDamage->count = 0;
}
if (!this->waitDone)
{
float a = 1.0f;
if (!this->waitFadeTime)
a = 1.0f;
else
{
uint64_t t = microtime();
if (t > this->waitFadeTime)
this->waitDone = true;
else
{
uint64_t delta = this->waitFadeTime - t;
a = 1.0f / SPLASH_FADE_TIME * delta;
}
}
if (!this->waitDone)
{
egl_splash_render(this->splash, a, this->splashRatio);
hasOverlay = true;
}
}
else if (!this->start)
{
egl_splash_render(this->splash, 1.0f, this->splashRatio);
hasOverlay = true;
}
if (desktopDamage && rotate != LG_ROTATE_0)
{
for (int i = 0; i < desktopDamage->count; ++i)
{
FrameDamageRect * r = desktopDamage->rects + i;
switch (rotate)
{
case LG_ROTATE_90:
*r = (FrameDamageRect) {
.x = this->format.height - r->y - r->height,
.y = r->x,
.width = r->height,
.height = r->width,
};
break;
case LG_ROTATE_180:
r->x = this->format.width - r->x - r->width;
r->y = this->format.height - r->y - r->height;
break;
case LG_ROTATE_270:
*r = (FrameDamageRect) {
.x = r->y,
.y = this->format.width - r->x - r->width,
.width = r->height,
.height = r->width,
};
break;
case LG_ROTATE_0:
default:
assert(!"unreachable");
}
}
}
double scaleX = 0;
double scaleY = 0;
bool rotated = false;
switch (rotate)
{
case LG_ROTATE_0:
case LG_ROTATE_180:
scaleX = (double) this->destRect.w / this->format.width;
scaleY = (double) this->destRect.h / this->format.height;
rotated = false;
break;
case LG_ROTATE_90:
case LG_ROTATE_270:
scaleX = (double) this->destRect.w / this->format.height;
scaleY = (double) this->destRect.h / this->format.width;
rotated = true;
break;
default:
assert(!"unreachable");
}
hasOverlay |= egl_damage_render(this->damage, rotated, newFrame ? desktopDamage : NULL);
hasOverlay |= invalidateWindow;
struct Rect damage[KVMFR_MAX_DAMAGE_RECTS + MAX_OVERLAY_RECTS + 2];
int damageIdx = app_renderOverlay(damage, MAX_OVERLAY_RECTS);
switch (damageIdx)
{
case 0: // no overlay
break;
case -1: // full damage
hasOverlay = true;
// fallthrough
default:
ImGui_ImplOpenGL3_NewFrame();
ImGui_ImplOpenGL3_RenderDrawData(igGetDrawData());
for (int i = 0; i < damageIdx; ++i)
damage[i].y = this->height - damage[i].y - damage[i].h;
}
if (!hasOverlay && !this->hadOverlay)
{
if (this->cursorLast.visible)
damage[damageIdx++] = this->cursorLast.rect;
if (cursorState.visible)
damage[damageIdx++] = cursorState.rect;
this->cursorLast = cursorState;
if (desktopDamage)
{
if (desktopDamage->count == 0)
// Zero damage count means invalidating entire window.
damageIdx = 0;
else
{
for (int i = 0; i < desktopDamage->count; ++i)
{
FrameDamageRect rect = desktopDamage->rects[i];
int x1 = (int) (rect.x * scaleX);
int y1 = (int) (rect.y * scaleY);
int x2 = (int) ceil((rect.x + rect.width) * scaleX);
int y2 = (int) ceil((rect.y + rect.height) * scaleY);
damage[damageIdx++] = (struct Rect) {
.x = this->destRect.x + x1,
.y = this->height - (this->destRect.y + y2),
.w = x2 - x1,
.h = y2 - y1,
};
}
}
}
}
else
damageIdx = 0;
this->hadOverlay = hasOverlay;
free(desktopDamage);
app_eglSwapBuffers(this->display, this->surface, damage, damageIdx);
return true;
}
struct LG_Renderer LGR_EGL =
{
.get_name = egl_get_name,
.setup = egl_setup,
.create = egl_create,
.initialize = egl_initialize,
.deinitialize = egl_deinitialize,
.supports = egl_supports,
.on_restart = egl_on_restart,
.on_resize = egl_on_resize,
.on_mouse_shape = egl_on_mouse_shape,
.on_mouse_event = egl_on_mouse_event,
.on_frame_format = egl_on_frame_format,
.on_frame = egl_on_frame,
.render_startup = egl_render_startup,
.render = egl_render
};
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