/*
**
** Copyright 2007 The Android Open Source Project
**
** Licensed under the Apache License Version 2.0(the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing software
** distributed under the License is distributed on an "AS IS" BASIS
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#define LOG_TAG "EGL"
#include <assert.h>
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <cutils/log.h>
#include <cutils/atomic.h>
#include <utils/threads.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <GLES/gl.h>
#include <GLES/glext.h>
#include <pixelflinger/format.h>
#include <pixelflinger/pixelflinger.h>
#include "context.h"
#include "state.h"
#include "texture.h"
#include "matrix.h"
#undef NELEM
#define NELEM(x) (sizeof(x)/sizeof(*(x)))
// ----------------------------------------------------------------------------
namespace android {
// ----------------------------------------------------------------------------
const unsigned int NUM_DISPLAYS = 1;
static pthread_mutex_t gInitMutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_mutex_t gErrorKeyMutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_key_t gEGLErrorKey = -1;
#ifndef HAVE_ANDROID_OS
namespace gl {
pthread_key_t gGLKey = -1;
}; // namespace gl
#endif
template<typename T>
static T setError(GLint error, T returnValue) {
if (ggl_unlikely(gEGLErrorKey == -1)) {
pthread_mutex_lock(&gErrorKeyMutex);
if (gEGLErrorKey == -1)
pthread_key_create(&gEGLErrorKey, NULL);
pthread_mutex_unlock(&gErrorKeyMutex);
}
pthread_setspecific(gEGLErrorKey, (void*)error);
return returnValue;
}
static GLint getError() {
if (ggl_unlikely(gEGLErrorKey == -1))
return EGL_SUCCESS;
GLint error = (GLint)pthread_getspecific(gEGLErrorKey);
pthread_setspecific(gEGLErrorKey, (void*)EGL_SUCCESS);
return error;
}
// ----------------------------------------------------------------------------
struct egl_display_t
{
egl_display_t() : type(0), initialized(0) { }
static egl_display_t& get_display(EGLDisplay dpy);
static EGLBoolean is_valid(EGLDisplay dpy) {
return ((uintptr_t(dpy)-1U) >= NUM_DISPLAYS) ? EGL_FALSE : EGL_TRUE;
}
NativeDisplayType type;
volatile int32_t initialized;
};
static egl_display_t gDisplays[NUM_DISPLAYS];
egl_display_t& egl_display_t::get_display(EGLDisplay dpy) {
return gDisplays[uintptr_t(dpy)-1U];
}
struct egl_context_t {
enum {
IS_CURRENT = 0x00010000,
NEVER_CURRENT = 0x00020000
};
uint32_t flags;
EGLDisplay dpy;
EGLConfig config;
EGLSurface read;
EGLSurface draw;
static inline egl_context_t* context(EGLContext ctx) {
ogles_context_t* const gl = static_cast<ogles_context_t*>(ctx);
return static_cast<egl_context_t*>(gl->rasterizer.base);
}
};
// ----------------------------------------------------------------------------
struct egl_surface_t
{
enum {
PAGE_FLIP = 0x00000001,
MAGIC = 0x31415265
};
uint32_t magic;
EGLDisplay dpy;
EGLConfig config;
EGLContext ctx;
egl_surface_t(EGLDisplay dpy, EGLConfig config, int32_t depthFormat);
virtual ~egl_surface_t();
virtual bool isValid() const = 0;
virtual EGLBoolean bindDrawSurface(ogles_context_t* gl) = 0;
virtual EGLBoolean bindReadSurface(ogles_context_t* gl) = 0;
virtual EGLint getWidth() const = 0;
virtual EGLint getHeight() const = 0;
virtual void* getBits() const = 0;
virtual EGLint getHorizontalResolution() const;
virtual EGLint getVerticalResolution() const;
virtual EGLint getRefreshRate() const;
virtual EGLint getSwapBehavior() const;
virtual EGLBoolean swapBuffers();
protected:
GGLSurface depth;
};
egl_surface_t::egl_surface_t(EGLDisplay dpy,
EGLConfig config,
int32_t depthFormat)
: magic(MAGIC), dpy(dpy), config(config), ctx(0)
{
depth.version = sizeof(GGLSurface);
depth.data = 0;
depth.format = depthFormat;
}
egl_surface_t::~egl_surface_t()
{
magic = 0;
free(depth.data);
}
EGLBoolean egl_surface_t::swapBuffers() {
return EGL_FALSE;
}
EGLint egl_surface_t::getHorizontalResolution() const {
return (0 * EGL_DISPLAY_SCALING) * (1.0f / 25.4f);
}
EGLint egl_surface_t::getVerticalResolution() const {
return (0 * EGL_DISPLAY_SCALING) * (1.0f / 25.4f);
}
EGLint egl_surface_t::getRefreshRate() const {
return (60 * EGL_DISPLAY_SCALING);
}
EGLint egl_surface_t::getSwapBehavior() const {
return EGL_BUFFER_PRESERVED;
}
// ----------------------------------------------------------------------------
struct egl_window_surface_t : public egl_surface_t
{
egl_window_surface_t(
EGLDisplay dpy, EGLConfig config,
int32_t depthFormat,
egl_native_window_t* window);
~egl_window_surface_t();
virtual bool isValid() const { return nativeWindow->magic == 0x600913; }
virtual EGLBoolean swapBuffers();
virtual EGLBoolean bindDrawSurface(ogles_context_t* gl);
virtual EGLBoolean bindReadSurface(ogles_context_t* gl);
virtual EGLint getWidth() const { return nativeWindow->width; }
virtual EGLint getHeight() const { return nativeWindow->height; }
virtual void* getBits() const;
virtual EGLint getHorizontalResolution() const;
virtual EGLint getVerticalResolution() const;
virtual EGLint getRefreshRate() const;
virtual EGLint getSwapBehavior() const;
private:
egl_native_window_t* nativeWindow;
};
egl_window_surface_t::egl_window_surface_t(EGLDisplay dpy,
EGLConfig config,
int32_t depthFormat,
egl_native_window_t* window)
: egl_surface_t(dpy, config, depthFormat), nativeWindow(window)
{
if (depthFormat) {
depth.width = window->width;
depth.height = window->height;
depth.stride = depth.width; // use the width here
depth.data = (GGLubyte*)malloc(depth.stride*depth.height*2);
if (depth.data == 0) {
setError(EGL_BAD_ALLOC, EGL_NO_SURFACE);
return;
}
}
nativeWindow->incRef(nativeWindow);
}
egl_window_surface_t::~egl_window_surface_t() {
nativeWindow->decRef(nativeWindow);
}
EGLBoolean egl_window_surface_t::swapBuffers()
{
uint32_t flags = nativeWindow->swapBuffers(nativeWindow);
if (flags & EGL_NATIVES_FLAG_SIZE_CHANGED) {
// TODO: we probably should reset the swap rect here
// if the window size has changed
if (depth.data) {
free(depth.data);
depth.width = nativeWindow->width;
depth.height = nativeWindow->height;
depth.stride = nativeWindow->stride;
depth.data = (GGLubyte*)malloc(depth.stride*depth.height*2);
if (depth.data == 0) {
setError(EGL_BAD_ALLOC, EGL_NO_SURFACE);
return EGL_FALSE;
}
}
}
return EGL_TRUE;
}
EGLBoolean egl_window_surface_t::bindDrawSurface(ogles_context_t* gl)
{
GGLSurface buffer;
buffer.version = sizeof(GGLSurface);
buffer.width = nativeWindow->width;
buffer.height = nativeWindow->height;
buffer.stride = nativeWindow->stride;
buffer.data = (GGLubyte*)nativeWindow->base + nativeWindow->offset;
buffer.format = nativeWindow->format;
gl->rasterizer.procs.colorBuffer(gl, &buffer);
if (depth.data != gl->rasterizer.state.buffers.depth.data)
gl->rasterizer.procs.depthBuffer(gl, &depth);
return EGL_TRUE;
}
EGLBoolean egl_window_surface_t::bindReadSurface(ogles_context_t* gl)
{
GGLSurface buffer;
buffer.version = sizeof(GGLSurface);
buffer.width = nativeWindow->width;
buffer.height = nativeWindow->height;
buffer.stride = nativeWindow->stride;
buffer.data = (GGLubyte*)nativeWindow->base + nativeWindow->offset;
buffer.format = nativeWindow->format;
gl->rasterizer.procs.readBuffer(gl, &buffer);
return EGL_TRUE;
}
void* egl_window_surface_t::getBits() const {
return (GGLubyte*)nativeWindow->base + nativeWindow->offset;
}
EGLint egl_window_surface_t::getHorizontalResolution() const {
return (nativeWindow->xdpi * EGL_DISPLAY_SCALING) * (1.0f / 25.4f);
}
EGLint egl_window_surface_t::getVerticalResolution() const {
return (nativeWindow->ydpi * EGL_DISPLAY_SCALING) * (1.0f / 25.4f);
}
EGLint egl_window_surface_t::getRefreshRate() const {
return (nativeWindow->fps * EGL_DISPLAY_SCALING);
}
EGLint egl_window_surface_t::getSwapBehavior() const {
uint32_t flags = nativeWindow->flags;
if (flags & EGL_NATIVES_FLAG_DESTROY_BACKBUFFER)
return EGL_BUFFER_DESTROYED;
return EGL_BUFFER_PRESERVED;
}
// ----------------------------------------------------------------------------
struct egl_pixmap_surface_t : public egl_surface_t
{
egl_pixmap_surface_t(
EGLDisplay dpy, EGLConfig config,
int32_t depthFormat,
egl_native_pixmap_t const * pixmap);
virtual ~egl_pixmap_surface_t() { }
virtual bool isValid() const { return nativePixmap.version == sizeof(egl_native_pixmap_t); }
virtual EGLBoolean bindDrawSurface(ogles_context_t* gl);
virtual EGLBoolean bindReadSurface(ogles_context_t* gl);
virtual EGLint getWidth() const { return nativePixmap.width; }
virtual EGLint getHeight() const { return nativePixmap.height; }
virtual void* getBits() const { return nativePixmap.data; }
private:
egl_native_pixmap_t nativePixmap;
};
egl_pixmap_surface_t::egl_pixmap_surface_t(EGLDisplay dpy,
EGLConfig config,
int32_t depthFormat,
egl_native_pixmap_t const * pixmap)
: egl_surface_t(dpy, config, depthFormat), nativePixmap(*pixmap)
{
if (depthFormat) {
depth.width = pixmap->width;
depth.height = pixmap->height;
depth.stride = depth.width; // use the width here
depth.data = (GGLubyte*)malloc(depth.stride*depth.height*2);
if (depth.data == 0) {
setError(EGL_BAD_ALLOC, EGL_NO_SURFACE);
return;
}
}
}
EGLBoolean egl_pixmap_surface_t::bindDrawSurface(ogles_context_t* gl)
{
GGLSurface buffer;
buffer.version = sizeof(GGLSurface);
buffer.width = nativePixmap.width;
buffer.height = nativePixmap.height;
buffer.stride = nativePixmap.stride;
buffer.data = nativePixmap.data;
buffer.format = nativePixmap.format;
gl->rasterizer.procs.colorBuffer(gl, &buffer);
if (depth.data != gl->rasterizer.state.buffers.depth.data)
gl->rasterizer.procs.depthBuffer(gl, &depth);
return EGL_TRUE;
}
EGLBoolean egl_pixmap_surface_t::bindReadSurface(ogles_context_t* gl)
{
GGLSurface buffer;
buffer.version = sizeof(GGLSurface);
buffer.width = nativePixmap.width;
buffer.height = nativePixmap.height;
buffer.stride = nativePixmap.stride;
buffer.data = nativePixmap.data;
buffer.format = nativePixmap.format;
gl->rasterizer.procs.readBuffer(gl, &buffer);
return EGL_TRUE;
}
// ----------------------------------------------------------------------------
struct egl_pbuffer_surface_t : public egl_surface_t
{
egl_pbuffer_surface_t(
EGLDisplay dpy, EGLConfig config, int32_t depthFormat,
int32_t w, int32_t h, int32_t f);
virtual ~egl_pbuffer_surface_t();
virtual bool isValid() const { return pbuffer.data != 0; }
virtual EGLBoolean bindDrawSurface(ogles_context_t* gl);
virtual EGLBoolean bindReadSurface(ogles_context_t* gl);
virtual EGLint getWidth() const { return pbuffer.width; }
virtual EGLint getHeight() const { return pbuffer.height; }
virtual void* getBits() const { return pbuffer.data; }
private:
GGLSurface pbuffer;
};
egl_pbuffer_surface_t::egl_pbuffer_surface_t(EGLDisplay dpy,
EGLConfig config, int32_t depthFormat,
int32_t w, int32_t h, int32_t f)
: egl_surface_t(dpy, config, depthFormat)
{
size_t size = w*h;
switch (f) {
case GGL_PIXEL_FORMAT_A_8: size *= 1; break;
case GGL_PIXEL_FORMAT_RGB_565: size *= 2; break;
case GGL_PIXEL_FORMAT_RGBA_8888: size *= 4; break;
default:
LOGE("incompatible pixel format for pbuffer (format=%d)", f);
pbuffer.data = 0;
break;
}
pbuffer.version = sizeof(GGLSurface);
pbuffer.width = w;
pbuffer.height = h;
pbuffer.stride = w;
pbuffer.data = (GGLubyte*)malloc(size);
pbuffer.format = f;
if (depthFormat) {
depth.width = pbuffer.width;
depth.height = pbuffer.height;
depth.stride = depth.width; // use the width here
depth.data = (GGLubyte*)malloc(depth.stride*depth.height*2);
if (depth.data == 0) {
setError(EGL_BAD_ALLOC, EGL_NO_SURFACE);
return;
}
}
}
egl_pbuffer_surface_t::~egl_pbuffer_surface_t() {
free(pbuffer.data);
}
EGLBoolean egl_pbuffer_surface_t::bindDrawSurface(ogles_context_t* gl)
{
gl->rasterizer.procs.colorBuffer(gl, &pbuffer);
if (depth.data != gl->rasterizer.state.buffers.depth.data)
gl->rasterizer.procs.depthBuffer(gl, &depth);
return EGL_TRUE;
}
EGLBoolean egl_pbuffer_surface_t::bindReadSurface(ogles_context_t* gl)
{
gl->rasterizer.procs.readBuffer(gl, &pbuffer);
return EGL_TRUE;
}
// ----------------------------------------------------------------------------
struct config_pair_t {
GLint key;
GLint value;
};
struct configs_t {
const config_pair_t* array;
int size;
};
struct config_management_t {
GLint key;
bool (*match)(GLint reqValue, GLint confValue);
static bool atLeast(GLint reqValue, GLint confValue) {
return (reqValue == EGL_DONT_CARE) || (confValue >= reqValue);
}
static bool exact(GLint reqValue, GLint confValue) {
return (reqValue == EGL_DONT_CARE) || (confValue == reqValue);
}
static bool mask(GLint reqValue, GLint confValue) {
return (confValue & reqValue) == reqValue;
}
};
// ----------------------------------------------------------------------------
#define VERSION_MAJOR 1
#define VERSION_MINOR 2
static char const * const gVendorString = "Google Inc.";
static char const * const gVersionString = "1.2 Android Driver";
static char const * const gClientApiString = "OpenGL ES";
static char const * const gExtensionsString = "";
// ----------------------------------------------------------------------------
struct extention_map_t {
const char * const name;
__eglMustCastToProperFunctionPointerType address;
};
static const extention_map_t gExtentionMap[] = {
{ "glDrawTexsOES",
(__eglMustCastToProperFunctionPointerType)&glDrawTexsOES },
{ "glDrawTexiOES",
(__eglMustCastToProperFunctionPointerType)&glDrawTexiOES },
{ "glDrawTexfOES",
(__eglMustCastToProperFunctionPointerType)&glDrawTexfOES },
{ "glDrawTexxOES",
(__eglMustCastToProperFunctionPointerType)&glDrawTexxOES },
{ "glDrawTexsvOES",
(__eglMustCastToProperFunctionPointerType)&glDrawTexsvOES },
{ "glDrawTexivOES",
(__eglMustCastToProperFunctionPointerType)&glDrawTexivOES },
{ "glDrawTexfvOES",
(__eglMustCastToProperFunctionPointerType)&glDrawTexfvOES },
{ "glDrawTexxvOES",
(__eglMustCastToProperFunctionPointerType)&glDrawTexxvOES },
{ "glQueryMatrixxOES",
(__eglMustCastToProperFunctionPointerType)&glQueryMatrixxOES },
{ "glClipPlanef",
(__eglMustCastToProperFunctionPointerType)&glClipPlanef },
{ "glClipPlanex",
(__eglMustCastToProperFunctionPointerType)&glClipPlanex },
{ "glBindBuffer",
(__eglMustCastToProperFunctionPointerType)&glBindBuffer },
{ "glBufferData",
(__eglMustCastToProperFunctionPointerType)&glBufferData },
{ "glBufferSubData",
(__eglMustCastToProperFunctionPointerType)&glBufferSubData },
{ "glDeleteBuffers",
(__eglMustCastToProperFunctionPointerType)&glDeleteBuffers },
{ "glGenBuffers",
(__eglMustCastToProperFunctionPointerType)&glGenBuffers },
};
/*
* In the lists below, attributes names MUST be sorted.
* Additionally, all configs must be sorted according to
* the EGL specification.
*/
static config_pair_t const config_base_attribute_list[] = {
{ EGL_STENCIL_SIZE, 0 },
{ EGL_CONFIG_CAVEAT, EGL_SLOW_CONFIG },
{ EGL_LEVEL, 0 },
{ EGL_MAX_PBUFFER_HEIGHT, GGL_MAX_VIEWPORT_DIMS },
{ EGL_MAX_PBUFFER_PIXELS,
GGL_MAX_VIEWPORT_DIMS*GGL_MAX_VIEWPORT_DIMS },
{ EGL_MAX_PBUFFER_WIDTH, GGL_MAX_VIEWPORT_DIMS },
{ EGL_NATIVE_RENDERABLE, EGL_TRUE },
{ EGL_NATIVE_VISUAL_ID, 0 },
{ EGL_NATIVE_VISUAL_TYPE, GGL_PIXEL_FORMAT_RGB_565 },
{ EGL_SAMPLES, 0 },
{ EGL_SAMPLE_BUFFERS, 0 },
{ EGL_TRANSPARENT_TYPE, EGL_NONE },
{ EGL_TRANSPARENT_BLUE_VALUE, 0 },
{ EGL_TRANSPARENT_GREEN_VALUE, 0 },
{ EGL_TRANSPARENT_RED_VALUE, 0 },
{ EGL_BIND_TO_TEXTURE_RGBA, EGL_FALSE },
{ EGL_BIND_TO_TEXTURE_RGB, EGL_FALSE },
{ EGL_MIN_SWAP_INTERVAL, 1 },
{ EGL_MAX_SWAP_INTERVAL, 4 },
};
// These configs can override the base attribute list
// NOTE: when adding a config here, don't forget to update eglCreate*Surface()
static config_pair_t const config_0_attribute_list[] = {
{ EGL_BUFFER_SIZE, 16 },
{ EGL_ALPHA_SIZE, 0 },
{ EGL_BLUE_SIZE, 5 },
{ EGL_GREEN_SIZE, 6 },
{ EGL_RED_SIZE, 5 },
{ EGL_DEPTH_SIZE, 0 },
{ EGL_CONFIG_ID, 0 },
{ EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT },
};
static config_pair_t const config_1_attribute_list[] = {
{ EGL_BUFFER_SIZE, 16 },
{ EGL_ALPHA_SIZE, 0 },
{ EGL_BLUE_SIZE, 5 },
{ EGL_GREEN_SIZE, 6 },
{ EGL_RED_SIZE, 5 },
{ EGL_DEPTH_SIZE, 16 },
{ EGL_CONFIG_ID, 1 },
{ EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT },
};
static config_pair_t const config_2_attribute_list[] = {
{ EGL_BUFFER_SIZE, 32 },
{ EGL_ALPHA_SIZE, 8 },
{ EGL_BLUE_SIZE, 8 },
{ EGL_GREEN_SIZE, 8 },
{ EGL_RED_SIZE, 8 },
{ EGL_DEPTH_SIZE, 0 },
{ EGL_CONFIG_ID, 2 },
{ EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT },
};
static config_pair_t const config_3_attribute_list[] = {
{ EGL_BUFFER_SIZE, 32 },
{ EGL_ALPHA_SIZE, 8 },
{ EGL_BLUE_SIZE, 8 },
{ EGL_GREEN_SIZE, 8 },
{ EGL_RED_SIZE, 8 },
{ EGL_DEPTH_SIZE, 16 },
{ EGL_CONFIG_ID, 3 },
{ EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT },
};
static config_pair_t const config_4_attribute_list[] = {
{ EGL_BUFFER_SIZE, 8 },
{ EGL_ALPHA_SIZE, 8 },
{ EGL_BLUE_SIZE, 0 },
{ EGL_GREEN_SIZE, 0 },
{ EGL_RED_SIZE, 0 },
{ EGL_DEPTH_SIZE, 0 },
{ EGL_CONFIG_ID, 4 },
{ EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT },
};
static config_pair_t const config_5_attribute_list[] = {
{ EGL_BUFFER_SIZE, 8 },
{ EGL_ALPHA_SIZE, 8 },
{ EGL_BLUE_SIZE, 0 },
{ EGL_GREEN_SIZE, 0 },
{ EGL_RED_SIZE, 0 },
{ EGL_DEPTH_SIZE, 16 },
{ EGL_CONFIG_ID, 5 },
{ EGL_SURFACE_TYPE, EGL_WINDOW_BIT|EGL_PBUFFER_BIT|EGL_PIXMAP_BIT },
};
static configs_t const gConfigs[] = {
{ config_0_attribute_list, NELEM(config_0_attribute_list) },
{ config_1_attribute_list, NELEM(config_1_attribute_list) },
{ config_2_attribute_list, NELEM(config_2_attribute_list) },
{ config_3_attribute_list, NELEM(config_3_attribute_list) },
{ config_4_attribute_list, NELEM(config_4_attribute_list) },
{ config_5_attribute_list, NELEM(config_5_attribute_list) },
};
static config_management_t const gConfigManagement[] = {
{ EGL_BUFFER_SIZE, config_management_t::atLeast },
{ EGL_ALPHA_SIZE, config_management_t::atLeast },
{ EGL_BLUE_SIZE, config_management_t::atLeast },
{ EGL_GREEN_SIZE, config_management_t::atLeast },
{ EGL_RED_SIZE, config_management_t::atLeast },
{ EGL_DEPTH_SIZE, config_management_t::atLeast },
{ EGL_STENCIL_SIZE, config_management_t::atLeast },
{ EGL_CONFIG_CAVEAT, config_management_t::exact },
{ EGL_CONFIG_ID, config_management_t::exact },
{ EGL_LEVEL, config_management_t::exact },
{ EGL_MAX_PBUFFER_HEIGHT, config_management_t::exact },
{ EGL_MAX_PBUFFER_PIXELS, config_management_t::exact },
{ EGL_MAX_PBUFFER_WIDTH, config_management_t::exact },
{ EGL_NATIVE_RENDERABLE, config_management_t::exact },
{ EGL_NATIVE_VISUAL_ID, config_management_t::exact },
{ EGL_NATIVE_VISUAL_TYPE, config_management_t::exact },
{ EGL_SAMPLES, config_management_t::exact },
{ EGL_SAMPLE_BUFFERS, config_management_t::exact },
{ EGL_SURFACE_TYPE, config_management_t::mask },
{ EGL_TRANSPARENT_TYPE, config_management_t::exact },
{ EGL_TRANSPARENT_BLUE_VALUE, config_management_t::exact },
{ EGL_TRANSPARENT_GREEN_VALUE, config_management_t::exact },
{ EGL_TRANSPARENT_RED_VALUE, config_management_t::exact },
{ EGL_BIND_TO_TEXTURE_RGBA, config_management_t::exact },
{ EGL_BIND_TO_TEXTURE_RGB, config_management_t::exact },
{ EGL_MIN_SWAP_INTERVAL, config_management_t::exact },
{ EGL_MAX_SWAP_INTERVAL, config_management_t::exact },
};
static config_pair_t const config_defaults[] = {
{ EGL_SURFACE_TYPE, EGL_WINDOW_BIT },
};
// ----------------------------------------------------------------------------
template<typename T>
static int binarySearch(T const sortedArray[], int first, int last, EGLint key)
{
while (first <= last) {
int mid = (first + last) / 2;
if (key > sortedArray[mid].key) {
first = mid + 1;
} else if (key < sortedArray[mid].key) {
last = mid - 1;
} else {
return mid;
}
}
return -1;
}
static int isAttributeMatching(int i, EGLint attr, EGLint val)
{
// look for the attribute in all of our configs
config_pair_t const* configFound = gConfigs[i].array;
int index = binarySearch<config_pair_t>(
gConfigs[i].array,
0, gConfigs[i].size-1,
attr);
if (index < 0) {
configFound = config_base_attribute_list;
index = binarySearch<config_pair_t>(
config_base_attribute_list,
0, NELEM(config_base_attribute_list)-1,
attr);
}
if (index >= 0) {
// attribute found, check if this config could match
int cfgMgtIndex = binarySearch<config_management_t>(
gConfigManagement,
0, NELEM(gConfigManagement)-1,
attr);
if (index >= 0) {
bool match = gConfigManagement[cfgMgtIndex].match(
val, configFound[index].value);
if (match) {
// this config matches
return 1;
}
} else {
// attribute not found. this should NEVER happen.
}
} else {
// error, this attribute doesn't exist
}
return 0;
}
static int makeCurrent(ogles_context_t* gl)
{
ogles_context_t* current = (ogles_context_t*)getGlThreadSpecific();
if (gl) {
egl_context_t* c = egl_context_t::context(gl);
if (c->flags & egl_context_t::IS_CURRENT) {
if (current != gl) {
// it is an error to set a context current, if it's already
// current to another thread
return -1;
}
} else {
if (current) {
// mark the current context as not current, and flush
glFlush();
egl_context_t::context(current)->flags &= ~egl_context_t::IS_CURRENT;
}
}
if (!(c->flags & egl_context_t::IS_CURRENT)) {
// The context is not current, make it current!
setGlThreadSpecific(gl);
c->flags |= egl_context_t::IS_CURRENT;
}
} else {
if (current) {
// mark the current context as not current, and flush
glFlush();
egl_context_t::context(current)->flags &= ~egl_context_t::IS_CURRENT;
}
// this thread has no context attached to it
setGlThreadSpecific(0);
}
return 0;
}
static EGLBoolean getConfigAttrib(EGLDisplay dpy, EGLConfig config,
EGLint attribute, EGLint *value)
{
size_t numConfigs = NELEM(gConfigs);
int index = (int)config;
if (uint32_t(index) >= numConfigs)
return setError(EGL_BAD_CONFIG, EGL_FALSE);
int attrIndex;
attrIndex = binarySearch<config_pair_t>(
gConfigs[index].array,
0, gConfigs[index].size-1,
attribute);
if (attrIndex>=0) {
*value = gConfigs[index].array[attrIndex].value;
return EGL_TRUE;
}
attrIndex = binarySearch<config_pair_t>(
config_base_attribute_list,
0, NELEM(config_base_attribute_list)-1,
attribute);
if (attrIndex>=0) {
*value = config_base_attribute_list[attrIndex].value;
return EGL_TRUE;
}
return setError(EGL_BAD_ATTRIBUTE, EGL_FALSE);
}
static EGLSurface createWindowSurface(EGLDisplay dpy, EGLConfig config,
NativeWindowType window, const EGLint *attrib_list)
{
if (egl_display_t::is_valid(dpy) == EGL_FALSE)
return setError(EGL_BAD_DISPLAY, EGL_NO_SURFACE);
if (window == 0)
return setError(EGL_BAD_MATCH, EGL_NO_SURFACE);
EGLint surfaceType;
if (getConfigAttrib(dpy, config, EGL_SURFACE_TYPE, &surfaceType) == EGL_FALSE)
return EGL_FALSE;
if (!(surfaceType & EGL_WINDOW_BIT))
return setError(EGL_BAD_MATCH, EGL_NO_SURFACE);
EGLint configID;
if (getConfigAttrib(dpy, config, EGL_CONFIG_ID, &configID) == EGL_FALSE)
return EGL_FALSE;
int32_t depthFormat;
int32_t pixelFormat;
switch(configID) {
case 0:
pixelFormat = GGL_PIXEL_FORMAT_RGB_565;
depthFormat = 0;
break;
case 1:
pixelFormat = GGL_PIXEL_FORMAT_RGB_565;
depthFormat = GGL_PIXEL_FORMAT_Z_16;
break;
case 2:
pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888;
depthFormat = 0;
break;
case 3:
pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888;
depthFormat = GGL_PIXEL_FORMAT_Z_16;
break;
case 4:
pixelFormat = GGL_PIXEL_FORMAT_A_8;
depthFormat = 0;
break;
case 5:
pixelFormat = GGL_PIXEL_FORMAT_A_8;
depthFormat = GGL_PIXEL_FORMAT_Z_16;
break;
default:
return setError(EGL_BAD_MATCH, EGL_NO_SURFACE);
}
// FIXME: we don't have access to the pixelFormat here just yet.
// (it's possible that the surface is not fully initialized)
// maybe this should be done after the page-flip
//if (EGLint(info.format) != pixelFormat)
// return setError(EGL_BAD_MATCH, EGL_NO_SURFACE);
egl_surface_t* surface =
new egl_window_surface_t(dpy, config, depthFormat,
static_cast<egl_native_window_t*>(window));
if (!surface->isValid()) {
// there was a problem in the ctor, the error
// flag has been set.
delete surface;
surface = 0;
}
return surface;
}
static EGLSurface createPixmapSurface(EGLDisplay dpy, EGLConfig config,
NativePixmapType pixmap, const EGLint *attrib_list)
{
if (egl_display_t::is_valid(dpy) == EGL_FALSE)
return setError(EGL_BAD_DISPLAY, EGL_NO_SURFACE);
if (pixmap == 0)
return setError(EGL_BAD_MATCH, EGL_NO_SURFACE);
EGLint surfaceType;
if (getConfigAttrib(dpy, config, EGL_SURFACE_TYPE, &surfaceType) == EGL_FALSE)
return EGL_FALSE;
if (!(surfaceType & EGL_PIXMAP_BIT))
return setError(EGL_BAD_MATCH, EGL_NO_SURFACE);
EGLint configID;
if (getConfigAttrib(dpy, config, EGL_CONFIG_ID, &configID) == EGL_FALSE)
return EGL_FALSE;
int32_t depthFormat;
int32_t pixelFormat;
switch(configID) {
case 0:
pixelFormat = GGL_PIXEL_FORMAT_RGB_565;
depthFormat = 0;
break;
case 1:
pixelFormat = GGL_PIXEL_FORMAT_RGB_565;
depthFormat = GGL_PIXEL_FORMAT_Z_16;
break;
case 2:
pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888;
depthFormat = 0;
break;
case 3:
pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888;
depthFormat = GGL_PIXEL_FORMAT_Z_16;
break;
case 4:
pixelFormat = GGL_PIXEL_FORMAT_A_8;
depthFormat = 0;
break;
case 5:
pixelFormat = GGL_PIXEL_FORMAT_A_8;
depthFormat = GGL_PIXEL_FORMAT_Z_16;
break;
default:
return setError(EGL_BAD_MATCH, EGL_NO_SURFACE);
}
if (pixmap->format != pixelFormat)
return setError(EGL_BAD_MATCH, EGL_NO_SURFACE);
egl_surface_t* surface =
new egl_pixmap_surface_t(dpy, config, depthFormat,
static_cast<egl_native_pixmap_t*>(pixmap));
if (!surface->isValid()) {
// there was a problem in the ctor, the error
// flag has been set.
delete surface;
surface = 0;
}
return surface;
}
static EGLSurface createPbufferSurface(EGLDisplay dpy, EGLConfig config,
const EGLint *attrib_list)
{
if (egl_display_t::is_valid(dpy) == EGL_FALSE)
return setError(EGL_BAD_DISPLAY, EGL_NO_SURFACE);
EGLint surfaceType;
if (getConfigAttrib(dpy, config, EGL_SURFACE_TYPE, &surfaceType) == EGL_FALSE)
return EGL_FALSE;
if (!(surfaceType & EGL_PBUFFER_BIT))
return setError(EGL_BAD_MATCH, EGL_NO_SURFACE);
EGLint configID;
if (getConfigAttrib(dpy, config, EGL_CONFIG_ID, &configID) == EGL_FALSE)
return EGL_FALSE;
int32_t depthFormat;
int32_t pixelFormat;
switch(configID) {
case 0:
pixelFormat = GGL_PIXEL_FORMAT_RGB_565;
depthFormat = 0;
break;
case 1:
pixelFormat = GGL_PIXEL_FORMAT_RGB_565;
depthFormat = GGL_PIXEL_FORMAT_Z_16;
break;
case 2:
pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888;
depthFormat = 0;
break;
case 3:
pixelFormat = GGL_PIXEL_FORMAT_RGBA_8888;
depthFormat = GGL_PIXEL_FORMAT_Z_16;
break;
case 4:
pixelFormat = GGL_PIXEL_FORMAT_A_8;
depthFormat = 0;
break;
case 5:
pixelFormat = GGL_PIXEL_FORMAT_A_8;
depthFormat = GGL_PIXEL_FORMAT_Z_16;
break;
default:
return setError(EGL_BAD_MATCH, EGL_NO_SURFACE);
}
int32_t w = 0;
int32_t h = 0;
while (attrib_list[0]) {
if (attrib_list[0] == EGL_WIDTH) w = attrib_list[1];
if (attrib_list[0] == EGL_HEIGHT) h = attrib_list[1];
attrib_list+=2;
}
egl_surface_t* surface =
new egl_pbuffer_surface_t(dpy, config, depthFormat, w, h, pixelFormat);
if (!surface->isValid()) {
// there was a problem in the ctor, the error
// flag has been set.
delete surface;
surface = 0;
}
return surface;
}
// ----------------------------------------------------------------------------
}; // namespace android
// ----------------------------------------------------------------------------
using namespace android;
// ----------------------------------------------------------------------------
// Initialization
// ----------------------------------------------------------------------------
EGLDisplay eglGetDisplay(NativeDisplayType display)
{
#ifndef HAVE_ANDROID_OS
// this just needs to be done once
if (gGLKey == -1) {
pthread_mutex_lock(&gInitMutex);
if (gGLKey == -1)
pthread_key_create(&gGLKey, NULL);
pthread_mutex_unlock(&gInitMutex);
}
#endif
if (display == EGL_DEFAULT_DISPLAY) {
EGLDisplay dpy = (EGLDisplay)1;
egl_display_t& d = egl_display_t::get_display(dpy);
d.type = display;
return dpy;
}
return EGL_NO_DISPLAY;
}
EGLBoolean eglInitialize(EGLDisplay dpy, EGLint *major, EGLint *minor)
{
if (egl_display_t::is_valid(dpy) == EGL_FALSE)
return setError(EGL_BAD_DISPLAY, EGL_FALSE);
EGLBoolean res = EGL_TRUE;
egl_display_t& d = egl_display_t::get_display(dpy);
if (android_atomic_inc(&d.initialized) == 0) {
// initialize stuff here if needed
//pthread_mutex_lock(&gInitMutex);
//pthread_mutex_unlock(&gInitMutex);
}
if (res == EGL_TRUE) {
if (major != NULL) *major = VERSION_MAJOR;
if (minor != NULL) *minor = VERSION_MINOR;
}
return res;
}
EGLBoolean eglTerminate(EGLDisplay dpy)
{
if (egl_display_t::is_valid(dpy) == EGL_FALSE)
return setError(EGL_BAD_DISPLAY, EGL_FALSE);
EGLBoolean res = EGL_TRUE;
egl_display_t& d = egl_display_t::get_display(dpy);
if (android_atomic_dec(&d.initialized) == 1) {
// TODO: destroy all resources (surfaces, contexts, etc...)
//pthread_mutex_lock(&gInitMutex);
//pthread_mutex_unlock(&gInitMutex);
}
return res;
}
// ----------------------------------------------------------------------------
// configuration
// ----------------------------------------------------------------------------
EGLBoolean eglGetConfigs( EGLDisplay dpy,
EGLConfig *configs,
EGLint config_size, EGLint *num_config)
{
if (egl_display_t::is_valid(dpy) == EGL_FALSE)
return setError(EGL_BAD_DISPLAY, EGL_FALSE);
GLint numConfigs = NELEM(gConfigs);
if (!configs) {
*num_config = numConfigs;
return EGL_TRUE;
}
GLint i;
for (i=0 ; i<numConfigs && i<config_size ; i++) {
*configs++ = (EGLConfig)i;
}
*num_config = i;
return EGL_TRUE;
}
EGLBoolean eglChooseConfig( EGLDisplay dpy, const EGLint *attrib_list,
EGLConfig *configs, EGLint config_size,
EGLint *num_config)
{
if (egl_display_t::is_valid(dpy) == EGL_FALSE)
return setError(EGL_BAD_DISPLAY, EGL_FALSE);
if (ggl_unlikely(num_config==0)) {
return setError(EGL_BAD_PARAMETER, EGL_FALSE);
}
if (ggl_unlikely(attrib_list==0)) {
*num_config = 0;
return EGL_TRUE;
}
int numAttributes = 0;
int numConfigs = NELEM(gConfigs);
uint32_t possibleMatch = (1<<numConfigs)-1;
while(possibleMatch && *attrib_list != EGL_NONE) {
numAttributes++;
EGLint attr = *attrib_list++;
EGLint val = *attrib_list++;
for (int i=0 ; i<numConfigs ; i++) {
if (!(possibleMatch & (1<<i)))
continue;
if (isAttributeMatching(i, attr, val) == 0) {
possibleMatch &= ~(1<<i);
}
}
}
// now, handle the attributes which have a useful default value
for (size_t j=0 ; j<NELEM(config_defaults) ; j++) {
// see if this attribute was specified, if not apply its
// default value
if (binarySearch<config_pair_t>(
(config_pair_t const*)attrib_list,
0, numAttributes-1,
config_defaults[j].key) < 0)
{
for (int i=0 ; i<numConfigs ; i++) {
if (!(possibleMatch & (1<<i)))
continue;
if (isAttributeMatching(i,
config_defaults[j].key,
config_defaults[j].value) == 0)
{
possibleMatch &= ~(1<<i);
}
}
}
}
// return the configurations found
int n=0;
if (possibleMatch) {
if (configs) {
for (int i=0 ; config_size && i<numConfigs ; i++) {
if (possibleMatch & (1<<i)) {
*configs++ = (EGLConfig)i;
config_size--;
n++;
}
}
} else {
for (int i=0 ; i<numConfigs ; i++) {
if (possibleMatch & (1<<i)) {
n++;
}
}
}
}
*num_config = n;
return EGL_TRUE;
}
EGLBoolean eglGetConfigAttrib(EGLDisplay dpy, EGLConfig config,
EGLint attribute, EGLint *value)
{
if (egl_display_t::is_valid(dpy) == EGL_FALSE)
return setError(EGL_BAD_DISPLAY, EGL_FALSE);
return getConfigAttrib(dpy, config, attribute, value);
}
// ----------------------------------------------------------------------------
// surfaces
// ----------------------------------------------------------------------------
EGLSurface eglCreateWindowSurface( EGLDisplay dpy, EGLConfig config,
NativeWindowType window,
const EGLint *attrib_list)
{
return createWindowSurface(dpy, config, window, attrib_list);
}
EGLSurface eglCreatePixmapSurface( EGLDisplay dpy, EGLConfig config,
NativePixmapType pixmap,
const EGLint *attrib_list)
{
return createPixmapSurface(dpy, config, pixmap, attrib_list);
}
EGLSurface eglCreatePbufferSurface( EGLDisplay dpy, EGLConfig config,
const EGLint *attrib_list)
{
return createPbufferSurface(dpy, config, attrib_list);
}
EGLBoolean eglDestroySurface(EGLDisplay dpy, EGLSurface eglSurface)
{
if (egl_display_t::is_valid(dpy) == EGL_FALSE)
return setError(EGL_BAD_DISPLAY, EGL_FALSE);
if (eglSurface != EGL_NO_SURFACE) {
egl_surface_t* surface( static_cast<egl_surface_t*>(eglSurface) );
if (surface->magic != egl_surface_t::MAGIC)
return setError(EGL_BAD_SURFACE, EGL_FALSE);
if (surface->dpy != dpy)
return setError(EGL_BAD_DISPLAY, EGL_FALSE);
delete surface;
}
return EGL_TRUE;
}
EGLBoolean eglQuerySurface( EGLDisplay dpy, EGLSurface eglSurface,
EGLint attribute, EGLint *value)
{
if (egl_display_t::is_valid(dpy) == EGL_FALSE)
return setError(EGL_BAD_DISPLAY, EGL_FALSE);
egl_surface_t* surface = static_cast<egl_surface_t*>(eglSurface);
if (surface->dpy != dpy)
return setError(EGL_BAD_DISPLAY, EGL_FALSE);
EGLBoolean ret = EGL_TRUE;
switch (attribute) {
case EGL_CONFIG_ID:
ret = getConfigAttrib(dpy, surface->config, EGL_CONFIG_ID, value);
break;
case EGL_WIDTH:
*value = surface->getWidth();
break;
case EGL_HEIGHT:
*value = surface->getHeight();
break;
case EGL_LARGEST_PBUFFER:
// not modified for a window or pixmap surface
break;
case EGL_TEXTURE_FORMAT:
*value = EGL_NO_TEXTURE;
break;
case EGL_TEXTURE_TARGET:
*value = EGL_NO_TEXTURE;
break;
case EGL_MIPMAP_TEXTURE:
*value = EGL_FALSE;
break;
case EGL_MIPMAP_LEVEL:
*value = 0;
break;
case EGL_RENDER_BUFFER:
// TODO: return the real RENDER_BUFFER here
*value = EGL_BACK_BUFFER;
break;
case EGL_HORIZONTAL_RESOLUTION:
// pixel/mm * EGL_DISPLAY_SCALING
*value = surface->getHorizontalResolution();
break;
case EGL_VERTICAL_RESOLUTION:
// pixel/mm * EGL_DISPLAY_SCALING
*value = surface->getVerticalResolution();
break;
case EGL_PIXEL_ASPECT_RATIO: {
// w/h * EGL_DISPLAY_SCALING
int wr = surface->getHorizontalResolution();
int hr = surface->getVerticalResolution();
*value = (wr * EGL_DISPLAY_SCALING) / hr;
} break;
case EGL_SWAP_BEHAVIOR:
*value = surface->getSwapBehavior();
break;
default:
ret = setError(EGL_BAD_ATTRIBUTE, EGL_FALSE);
}
return ret;
}
EGLContext eglCreateContext(EGLDisplay dpy, EGLConfig config,
EGLContext share_list, const EGLint *attrib_list)
{
if (egl_display_t::is_valid(dpy) == EGL_FALSE)
return setError(EGL_BAD_DISPLAY, EGL_NO_SURFACE);
ogles_context_t* gl = ogles_init(sizeof(egl_context_t));
if (!gl) return setError(EGL_BAD_ALLOC, EGL_NO_CONTEXT);
egl_context_t* c = static_cast<egl_context_t*>(gl->rasterizer.base);
c->flags = egl_context_t::NEVER_CURRENT;
c->dpy = dpy;
c->config = config;
c->read = 0;
c->draw = 0;
return (EGLContext)gl;
}
EGLBoolean eglDestroyContext(EGLDisplay dpy, EGLContext ctx)
{
if (egl_display_t::is_valid(dpy) == EGL_FALSE)
return setError(EGL_BAD_DISPLAY, EGL_FALSE);
egl_context_t* c = egl_context_t::context(ctx);
if (c->flags & egl_context_t::IS_CURRENT)
setGlThreadSpecific(0);
ogles_uninit((ogles_context_t*)ctx);
return EGL_TRUE;
}
EGLBoolean eglMakeCurrent( EGLDisplay dpy, EGLSurface draw,
EGLSurface read, EGLContext ctx)
{
if (egl_display_t::is_valid(dpy) == EGL_FALSE)
return setError(EGL_BAD_DISPLAY, EGL_FALSE);
if (draw) {
egl_surface_t* s = (egl_surface_t*)draw;
if (s->dpy != dpy)
return setError(EGL_BAD_DISPLAY, EGL_FALSE);
// TODO: check that draw and read are compatible with the context
}
EGLContext current_ctx = EGL_NO_CONTEXT;
if ((read == EGL_NO_SURFACE && draw == EGL_NO_SURFACE) && (ctx != EGL_NO_CONTEXT))
return setError(EGL_BAD_MATCH, EGL_FALSE);
if ((read != EGL_NO_SURFACE || draw != EGL_NO_SURFACE) && (ctx == EGL_NO_CONTEXT))
return setError(EGL_BAD_MATCH, EGL_FALSE);
if (ctx == EGL_NO_CONTEXT) {
// if we're detaching, we need the current context
current_ctx = (EGLContext)getGlThreadSpecific();
} else {
egl_context_t* c = egl_context_t::context(ctx);
egl_surface_t* d = (egl_surface_t*)draw;
egl_surface_t* r = (egl_surface_t*)read;
if ((d && d->ctx && d->ctx != ctx) ||
(r && r->ctx && r->ctx != ctx)) {
// once of the surface is bound to a context in another thread
return setError(EGL_BAD_ACCESS, EGL_FALSE);
}
}
// TODO: call connect / disconnect on the surface
ogles_context_t* gl = (ogles_context_t*)ctx;
if (makeCurrent(gl) == 0) {
if (ctx) {
egl_context_t* c = egl_context_t::context(ctx);
egl_surface_t* d = (egl_surface_t*)draw;
egl_surface_t* r = (egl_surface_t*)read;
c->read = read;
c->draw = draw;
if (c->flags & egl_context_t::NEVER_CURRENT) {
c->flags &= ~egl_context_t::NEVER_CURRENT;
GLint w = 0;
GLint h = 0;
if (draw) {
w = d->getWidth();
h = d->getHeight();
}
ogles_surfaceport(gl, 0, 0);
ogles_viewport(gl, 0, 0, w, h);
ogles_scissor(gl, 0, 0, w, h);
}
if (d) {
d->ctx = ctx;
d->bindDrawSurface(gl);
}
if (r) {
r->ctx = ctx;
r->bindReadSurface(gl);
}
} else {
// if surfaces were bound to the context bound to this thread
// mark then as unbound.
if (current_ctx) {
egl_context_t* c = egl_context_t::context(current_ctx);
egl_surface_t* d = (egl_surface_t*)c->draw;
egl_surface_t* r = (egl_surface_t*)c->read;
if (d) d->ctx = EGL_NO_CONTEXT;
if (r) r->ctx = EGL_NO_CONTEXT;
}
}
return EGL_TRUE;
}
return setError(EGL_BAD_ACCESS, EGL_FALSE);
}
EGLContext eglGetCurrentContext(void)
{
// eglGetCurrentContext returns the current EGL rendering context,
// as specified by eglMakeCurrent. If no context is current,
// EGL_NO_CONTEXT is returned.
return (EGLContext)getGlThreadSpecific();
}
EGLSurface eglGetCurrentSurface(EGLint readdraw)
{
// eglGetCurrentSurface returns the read or draw surface attached
// to the current EGL rendering context, as specified by eglMakeCurrent.
// If no context is current, EGL_NO_SURFACE is returned.
EGLContext ctx = (EGLContext)getGlThreadSpecific();
if (ctx == EGL_NO_CONTEXT) return EGL_NO_SURFACE;
egl_context_t* c = egl_context_t::context(ctx);
if (readdraw == EGL_READ) {
return c->read;
} else if (readdraw == EGL_DRAW) {
return c->draw;
}
return setError(EGL_BAD_ATTRIBUTE, EGL_NO_SURFACE);
}
EGLDisplay eglGetCurrentDisplay(void)
{
// eglGetCurrentDisplay returns the current EGL display connection
// for the current EGL rendering context, as specified by eglMakeCurrent.
// If no context is current, EGL_NO_DISPLAY is returned.
EGLContext ctx = (EGLContext)getGlThreadSpecific();
if (ctx == EGL_NO_CONTEXT) return EGL_NO_DISPLAY;
egl_context_t* c = egl_context_t::context(ctx);
return c->dpy;
}
EGLBoolean eglQueryContext( EGLDisplay dpy, EGLContext ctx,
EGLint attribute, EGLint *value)
{
if (egl_display_t::is_valid(dpy) == EGL_FALSE)
return setError(EGL_BAD_DISPLAY, EGL_FALSE);
egl_context_t* c = egl_context_t::context(ctx);
switch (attribute) {
case EGL_CONFIG_ID:
// Returns the ID of the EGL frame buffer configuration with
// respect to which the context was created
return getConfigAttrib(dpy, c->config, EGL_CONFIG_ID, value);
}
return setError(EGL_BAD_ATTRIBUTE, EGL_FALSE);
}
EGLBoolean eglWaitGL(void)
{
return EGL_TRUE;
}
EGLBoolean eglWaitNative(EGLint engine)
{
return EGL_TRUE;
}
EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface draw)
{
if (egl_display_t::is_valid(dpy) == EGL_FALSE)
return setError(EGL_BAD_DISPLAY, EGL_FALSE);
egl_surface_t* d = static_cast<egl_surface_t*>(draw);
if (d->dpy != dpy)
return setError(EGL_BAD_DISPLAY, EGL_FALSE);
// post the surface
d->swapBuffers();
// if it's bound to a context, update the buffer
if (d->ctx != EGL_NO_CONTEXT) {
d->bindDrawSurface((ogles_context_t*)d->ctx);
// if this surface is also the read surface of the context
// it is bound to, make sure to update the read buffer as well.
// The EGL spec is a little unclear about this.
egl_context_t* c = egl_context_t::context(d->ctx);
if (c->read == draw) {
d->bindReadSurface((ogles_context_t*)d->ctx);
}
}
return EGL_TRUE;
}
EGLBoolean eglCopyBuffers( EGLDisplay dpy, EGLSurface surface,
NativePixmapType target)
{
if (egl_display_t::is_valid(dpy) == EGL_FALSE)
return setError(EGL_BAD_DISPLAY, EGL_FALSE);
// TODO: eglCopyBuffers()
return EGL_FALSE;
}
EGLint eglGetError(void)
{
return getError();
}
const char* eglQueryString(EGLDisplay dpy, EGLint name)
{
if (egl_display_t::is_valid(dpy) == EGL_FALSE)
return setError(EGL_BAD_DISPLAY, (const char*)0);
switch (name) {
case EGL_VENDOR:
return gVendorString;
case EGL_VERSION:
return gVersionString;
case EGL_EXTENSIONS:
return gExtensionsString;
case EGL_CLIENT_APIS:
return gClientApiString;
}
return setError(EGL_BAD_PARAMETER, (const char *)0);
}
// ----------------------------------------------------------------------------
// EGL 1.1
// ----------------------------------------------------------------------------
EGLBoolean eglSurfaceAttrib(
EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint value)
{
if (egl_display_t::is_valid(dpy) == EGL_FALSE)
return setError(EGL_BAD_DISPLAY, EGL_FALSE);
// TODO: eglSurfaceAttrib()
return setError(EGL_BAD_PARAMETER, EGL_FALSE);
}
EGLBoolean eglBindTexImage(
EGLDisplay dpy, EGLSurface surface, EGLint buffer)
{
if (egl_display_t::is_valid(dpy) == EGL_FALSE)
return setError(EGL_BAD_DISPLAY, EGL_FALSE);
// TODO: eglBindTexImage()
return setError(EGL_BAD_PARAMETER, EGL_FALSE);
}
EGLBoolean eglReleaseTexImage(
EGLDisplay dpy, EGLSurface surface, EGLint buffer)
{
if (egl_display_t::is_valid(dpy) == EGL_FALSE)
return setError(EGL_BAD_DISPLAY, EGL_FALSE);
// TODO: eglReleaseTexImage()
return setError(EGL_BAD_PARAMETER, EGL_FALSE);
}
EGLBoolean eglSwapInterval(EGLDisplay dpy, EGLint interval)
{
if (egl_display_t::is_valid(dpy) == EGL_FALSE)
return setError(EGL_BAD_DISPLAY, EGL_FALSE);
// TODO: eglSwapInterval()
return setError(EGL_BAD_PARAMETER, EGL_FALSE);
}
// ----------------------------------------------------------------------------
// EGL 1.2
// ----------------------------------------------------------------------------
EGLBoolean eglBindAPI(EGLenum api)
{
if (api != EGL_OPENGL_ES_API)
return setError(EGL_BAD_PARAMETER, EGL_FALSE);
return EGL_TRUE;
}
EGLenum eglQueryAPI(void)
{
return EGL_OPENGL_ES_API;
}
EGLBoolean eglWaitClient(void)
{
glFinish();
return EGL_TRUE;
}
EGLBoolean eglReleaseThread(void)
{
// TODO: eglReleaseThread()
return EGL_TRUE;
}
EGLSurface eglCreatePbufferFromClientBuffer(
EGLDisplay dpy, EGLenum buftype, EGLClientBuffer buffer,
EGLConfig config, const EGLint *attrib_list)
{
if (egl_display_t::is_valid(dpy) == EGL_FALSE)
return setError(EGL_BAD_DISPLAY, EGL_NO_SURFACE);
// TODO: eglCreatePbufferFromClientBuffer()
return setError(EGL_BAD_PARAMETER, EGL_NO_SURFACE);
}
// ----------------------------------------------------------------------------
// Android extensions
// ----------------------------------------------------------------------------
void (*eglGetProcAddress (const char *procname))()
{
extention_map_t const * const map = gExtentionMap;
for (uint32_t i=0 ; i<NELEM(gExtentionMap) ; i++) {
if (!strcmp(procname, map[i].name)) {
return map[i].address;
}
}
return NULL;
}