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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <epoxy/egl.h>
#include <epoxy/gl.h>
typedef struct {
EGLint config_id;
EGLint buffer_size;
EGLint color_buffer_type;
EGLint transparent_type;
EGLint level;
EGLint red_size;
EGLint green_size;
EGLint blue_size;
EGLint alpha_size;
EGLint depth_size;
EGLint stencil_size;
EGLint samples;
EGLint sample_buffers;
EGLint native_visual_id;
EGLint native_visual_type;
EGLint native_renderable;
EGLint config_caveat;
EGLint bind_to_texture_rgb;
EGLint bind_to_texture_rgba;
EGLint renderable_type;
EGLint conformant;
EGLint surface_type;
EGLint max_pbuffer_width;
EGLint max_pbuffer_height;
EGLint max_pbuffer_pixels;
EGLint min_swap_interval;
EGLint max_swap_interval;
} MockConfig;
typedef struct {
} MockDisplay;
typedef struct {
} MockContext;
typedef struct {
} MockSurface;
static bool display_initialized = false;
static MockDisplay mock_display;
static MockConfig mock_config;
static MockContext mock_context;
static MockSurface mock_surface;
static EGLint mock_error = EGL_SUCCESS;
static bool check_display(EGLDisplay dpy) {
if (dpy == nullptr) {
mock_error = EGL_BAD_DISPLAY;
return false;
}
return true;
}
static bool check_initialized(EGLDisplay dpy) {
if (!display_initialized) {
mock_error = EGL_NOT_INITIALIZED;
return false;
}
return true;
}
static bool check_config(EGLConfig config) {
if (config == nullptr) {
mock_error = EGL_BAD_CONFIG;
return false;
}
return true;
}
static EGLBoolean bool_success() {
mock_error = EGL_SUCCESS;
return EGL_TRUE;
}
static EGLBoolean bool_failure(EGLint error) {
mock_error = error;
return EGL_FALSE;
}
EGLBoolean _eglBindAPI(EGLenum api) {
return bool_success();
}
EGLBoolean _eglChooseConfig(EGLDisplay dpy,
const EGLint* attrib_list,
EGLConfig* configs,
EGLint config_size,
EGLint* num_config) {
if (!check_display(dpy) || !check_initialized(dpy)) {
return EGL_FALSE;
}
if (configs == nullptr) {
if (num_config != nullptr) {
*num_config = 1;
}
return bool_success();
}
EGLint n_returned = 0;
if (config_size >= 1) {
configs[0] = &mock_config;
n_returned++;
}
if (num_config != nullptr) {
*num_config = n_returned;
}
return bool_success();
}
EGLContext _eglCreateContext(EGLDisplay dpy,
EGLConfig config,
EGLContext share_context,
const EGLint* attrib_list) {
if (!check_display(dpy) || !check_initialized(dpy) || !check_config(config)) {
return EGL_NO_CONTEXT;
}
mock_error = EGL_SUCCESS;
return &mock_context;
}
EGLSurface _eglCreatePbufferSurface(EGLDisplay dpy,
EGLConfig config,
const EGLint* attrib_list) {
if (!check_display(dpy) || !check_initialized(dpy) || !check_config(config)) {
return EGL_NO_SURFACE;
}
mock_error = EGL_SUCCESS;
return &mock_surface;
}
EGLSurface _eglCreateWindowSurface(EGLDisplay dpy,
EGLConfig config,
EGLNativeWindowType win,
const EGLint* attrib_list) {
if (!check_display(dpy) || !check_initialized(dpy) || !check_config(config)) {
return EGL_NO_SURFACE;
}
mock_error = EGL_SUCCESS;
return &mock_surface;
}
EGLBoolean _eglGetConfigAttrib(EGLDisplay dpy,
EGLConfig config,
EGLint attribute,
EGLint* value) {
if (!check_display(dpy) || !check_initialized(dpy) || !check_config(config)) {
return EGL_FALSE;
}
MockConfig* c = static_cast<MockConfig*>(config);
switch (attribute) {
case EGL_CONFIG_ID:
*value = c->config_id;
return bool_success();
case EGL_BUFFER_SIZE:
*value = c->buffer_size;
return bool_success();
case EGL_COLOR_BUFFER_TYPE:
*value = c->color_buffer_type;
return bool_success();
case EGL_TRANSPARENT_TYPE:
*value = c->transparent_type;
return bool_success();
case EGL_LEVEL:
*value = c->level;
return bool_success();
case EGL_RED_SIZE:
*value = c->red_size;
return bool_success();
case EGL_GREEN_SIZE:
*value = c->green_size;
return bool_success();
case EGL_BLUE_SIZE:
*value = c->blue_size;
return bool_success();
case EGL_ALPHA_SIZE:
*value = c->alpha_size;
return bool_success();
case EGL_DEPTH_SIZE:
*value = c->depth_size;
return bool_success();
case EGL_STENCIL_SIZE:
*value = c->stencil_size;
return bool_success();
case EGL_SAMPLES:
*value = c->samples;
return bool_success();
case EGL_SAMPLE_BUFFERS:
*value = c->sample_buffers;
return bool_success();
case EGL_NATIVE_VISUAL_ID:
*value = c->native_visual_id;
return bool_success();
case EGL_NATIVE_VISUAL_TYPE:
*value = c->native_visual_type;
return bool_success();
case EGL_NATIVE_RENDERABLE:
*value = c->native_renderable;
return bool_success();
case EGL_CONFIG_CAVEAT:
*value = c->config_caveat;
return bool_success();
case EGL_BIND_TO_TEXTURE_RGB:
*value = c->bind_to_texture_rgb;
return bool_success();
case EGL_BIND_TO_TEXTURE_RGBA:
*value = c->bind_to_texture_rgba;
return bool_success();
case EGL_RENDERABLE_TYPE:
*value = c->renderable_type;
return bool_success();
case EGL_CONFORMANT:
*value = c->conformant;
return bool_success();
case EGL_SURFACE_TYPE:
*value = c->surface_type;
return bool_success();
case EGL_MAX_PBUFFER_WIDTH:
*value = c->max_pbuffer_width;
return bool_success();
case EGL_MAX_PBUFFER_HEIGHT:
*value = c->max_pbuffer_height;
return bool_success();
case EGL_MAX_PBUFFER_PIXELS:
*value = c->max_pbuffer_pixels;
return bool_success();
case EGL_MIN_SWAP_INTERVAL:
*value = c->min_swap_interval;
return bool_success();
case EGL_MAX_SWAP_INTERVAL:
*value = c->max_swap_interval;
return bool_success();
default:
return bool_failure(EGL_BAD_ATTRIBUTE);
}
}
EGLDisplay _eglGetDisplay(EGLNativeDisplayType display_id) {
return &mock_display;
}
EGLint _eglGetError() {
EGLint error = mock_error;
mock_error = EGL_SUCCESS;
return error;
}
void (*_eglGetProcAddress(const char* procname))(void) {
mock_error = EGL_SUCCESS;
return nullptr;
}
EGLBoolean _eglInitialize(EGLDisplay dpy, EGLint* major, EGLint* minor) {
if (!check_display(dpy)) {
return EGL_FALSE;
}
if (!display_initialized) {
mock_config.config_id = 1;
mock_config.buffer_size = 32;
mock_config.color_buffer_type = EGL_RGB_BUFFER;
mock_config.transparent_type = EGL_NONE;
mock_config.level = 1;
mock_config.red_size = 8;
mock_config.green_size = 8;
mock_config.blue_size = 8;
mock_config.alpha_size = 0;
mock_config.depth_size = 0;
mock_config.stencil_size = 0;
mock_config.samples = 0;
mock_config.sample_buffers = 0;
mock_config.native_visual_id = 1;
mock_config.native_visual_type = 0;
mock_config.native_renderable = EGL_TRUE;
mock_config.config_caveat = EGL_NONE;
mock_config.bind_to_texture_rgb = EGL_TRUE;
mock_config.bind_to_texture_rgba = EGL_FALSE;
mock_config.renderable_type = EGL_OPENGL_ES2_BIT;
mock_config.conformant = EGL_OPENGL_ES2_BIT;
mock_config.surface_type = EGL_WINDOW_BIT | EGL_PBUFFER_BIT;
mock_config.max_pbuffer_width = 1024;
mock_config.max_pbuffer_height = 1024;
mock_config.max_pbuffer_pixels = 1024 * 1024;
mock_config.min_swap_interval = 0;
mock_config.max_swap_interval = 1000;
display_initialized = true;
}
if (major != nullptr) {
*major = 1;
}
if (minor != nullptr) {
*minor = 5;
}
return bool_success();
}
EGLBoolean _eglMakeCurrent(EGLDisplay dpy,
EGLSurface draw,
EGLSurface read,
EGLContext ctx) {
if (!check_display(dpy) || !check_initialized(dpy)) {
return EGL_FALSE;
}
return bool_success();
}
EGLBoolean _eglQueryContext(EGLDisplay display,
EGLContext context,
EGLint attribute,
EGLint* value) {
if (attribute == EGL_CONTEXT_CLIENT_TYPE) {
*value = EGL_OPENGL_API;
return EGL_TRUE;
}
return EGL_FALSE;
}
EGLBoolean _eglSwapBuffers(EGLDisplay dpy, EGLSurface surface) {
if (!check_display(dpy) || !check_initialized(dpy)) {
return EGL_FALSE;
}
return bool_success();
}
static GLuint bound_texture_2d;
static void _glBindFramebuffer(GLenum target, GLuint framebuffer) {}
static void _glBindTexture(GLenum target, GLuint texture) {
if (target == GL_TEXTURE_2D) {
bound_texture_2d = texture;
}
}
void _glDeleteFramebuffers(GLsizei n, const GLuint* framebuffers) {}
void _glDeleteTextures(GLsizei n, const GLuint* textures) {}
static void _glFramebufferTexture2D(GLenum target,
GLenum attachment,
GLenum textarget,
GLuint texture,
GLint level) {}
static void _glGenTextures(GLsizei n, GLuint* textures) {
for (GLsizei i = 0; i < n; i++) {
textures[i] = 0;
}
}
static void _glGenFramebuffers(GLsizei n, GLuint* framebuffers) {
for (GLsizei i = 0; i < n; i++) {
framebuffers[i] = 0;
}
}
static void _glGetIntegerv(GLenum pname, GLint* data) {
if (pname == GL_TEXTURE_BINDING_2D) {
*data = bound_texture_2d;
}
}
static void _glTexParameterf(GLenum target, GLenum pname, GLfloat param) {}
static void _glTexParameteri(GLenum target, GLenum pname, GLint param) {}
static void _glTexImage2D(GLenum target,
GLint level,
GLint internalformat,
GLsizei width,
GLsizei height,
GLint border,
GLenum format,
GLenum type,
const void* pixels) {}
static GLenum _glGetError() {
return GL_NO_ERROR;
}
bool epoxy_has_gl_extension(const char* extension) {
return false;
}
bool epoxy_is_desktop_gl(void) {
return false;
}
int epoxy_gl_version(void) {
return 0;
}
#ifdef __GNUC__
#define CONSTRUCT(_func) static void _func(void) __attribute__((constructor));
#define DESTRUCT(_func) static void _func(void) __attribute__((destructor));
#elif defined(_MSC_VER) && (_MSC_VER >= 1500)
#define CONSTRUCT(_func) \
static void _func(void); \
static int _func##_wrapper(void) { \
_func(); \
return 0; \
} \
__pragma(section(".CRT$XCU", read)) \
__declspec(allocate(".CRT$XCU")) static int (*_array##_func)(void) = \
_func##_wrapper;
#else
#error "You will need constructor support for your compiler"
#endif
CONSTRUCT(library_init)
EGLBoolean (*epoxy_eglBindAPI)(EGLenum api);
EGLBoolean (*epoxy_eglChooseConfig)(EGLDisplay dpy,
const EGLint* attrib_list,
EGLConfig* configs,
EGLint config_size,
EGLint* num_config);
EGLContext (*epoxy_eglCreateContext)(EGLDisplay dpy,
EGLConfig config,
EGLContext share_context,
const EGLint* attrib_list);
EGLSurface (*epoxy_eglCreatePbufferSurface)(EGLDisplay dpy,
EGLConfig config,
const EGLint* attrib_list);
EGLSurface (*epoxy_eglCreateWindowSurface)(EGLDisplay dpy,
EGLConfig config,
EGLNativeWindowType win,
const EGLint* attrib_list);
EGLBoolean (*epoxy_eglGetConfigAttrib)(EGLDisplay dpy,
EGLConfig config,
EGLint attribute,
EGLint* value);
EGLDisplay (*epoxy_eglGetDisplay)(EGLNativeDisplayType display_id);
EGLint (*epoxy_eglGetError)();
void (*(*epoxy_eglGetProcAddress)(const char* procname))(void);
EGLBoolean (*epoxy_eglInitialize)(EGLDisplay dpy, EGLint* major, EGLint* minor);
EGLBoolean (*epoxy_eglMakeCurrent)(EGLDisplay dpy,
EGLSurface draw,
EGLSurface read,
EGLContext ctx);
EGLBoolean (*epoxy_eglSwapBuffers)(EGLDisplay dpy, EGLSurface surface);
void (*epoxy_glBindFramebuffer)(GLenum target, GLuint framebuffer);
void (*epoxy_glBindTexture)(GLenum target, GLuint texture);
void (*epoxy_glDeleteFramebuffers)(GLsizei n, const GLuint* framebuffers);
void (*epoxy_glDeleteTextures)(GLsizei n, const GLuint* textures);
void (*epoxy_glFramebufferTexture2D)(GLenum target,
GLenum attachment,
GLenum textarget,
GLuint texture,
GLint level);
void (*epoxy_glGenFramebuffers)(GLsizei n, GLuint* framebuffers);
void (*epoxy_glGenTextures)(GLsizei n, GLuint* textures);
void (*epoxy_glTexParameterf)(GLenum target, GLenum pname, GLfloat param);
void (*epoxy_glTexParameteri)(GLenum target, GLenum pname, GLint param);
void (*epoxy_glTexImage2D)(GLenum target,
GLint level,
GLint internalformat,
GLsizei width,
GLsizei height,
GLint border,
GLenum format,
GLenum type,
const void* pixels);
GLenum (*epoxy_glGetError)();
static void library_init() {
epoxy_eglBindAPI = _eglBindAPI;
epoxy_eglChooseConfig = _eglChooseConfig;
epoxy_eglCreateContext = _eglCreateContext;
epoxy_eglCreatePbufferSurface = _eglCreatePbufferSurface;
epoxy_eglCreateWindowSurface = _eglCreateWindowSurface;
epoxy_eglGetConfigAttrib = _eglGetConfigAttrib;
epoxy_eglGetDisplay = _eglGetDisplay;
epoxy_eglGetError = _eglGetError;
epoxy_eglGetProcAddress = _eglGetProcAddress;
epoxy_eglInitialize = _eglInitialize;
epoxy_eglMakeCurrent = _eglMakeCurrent;
epoxy_eglQueryContext = _eglQueryContext;
epoxy_eglSwapBuffers = _eglSwapBuffers;
epoxy_glBindFramebuffer = _glBindFramebuffer;
epoxy_glBindTexture = _glBindTexture;
epoxy_glDeleteFramebuffers = _glDeleteFramebuffers;
epoxy_glDeleteTextures = _glDeleteTextures;
epoxy_glFramebufferTexture2D = _glFramebufferTexture2D;
epoxy_glGenFramebuffers = _glGenFramebuffers;
epoxy_glGenTextures = _glGenTextures;
epoxy_glGetIntegerv = _glGetIntegerv;
epoxy_glTexParameterf = _glTexParameterf;
epoxy_glTexParameteri = _glTexParameteri;
epoxy_glTexImage2D = _glTexImage2D;
epoxy_glGetError = _glGetError;
}