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Work around emulator GL ES 2.0 bug

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This commit is contained in:
Leith Bade
2014-11-09 16:40:39 +11:00
parent 25251ee634
commit 4854527e31
1 changed files with 54 additions and 9 deletions
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63
android/cpp/NativeMapView.cpp
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@@ -1,5 +1,8 @@
#include <cstdlib>
#include <memory>
#include <sys/system_properties.h>
#include <GLES2/gl2.h>
#include <mbgl/platform/platform.hpp>
@@ -108,19 +111,31 @@ bool NativeMapView::initializeDisplay() {
log_egl_string(display, EGL_CLIENT_APIS, "Client APIs");
log_egl_string(display, EGL_EXTENSIONS, "Client Extensions");
// Detect if we are in emulator
char prop[PROP_VALUE_MAX];
__system_property_get("ro.kernel.qemu", prop);
bool in_emulator = strtol(prop, nullptr, 0) == 1;
LOG_INFO("ro.kernel.qemu = %s", prop);
if (in_emulator) {
LOG_INFO("In emulator! Enabling hacks :-(");
}
// Try 565 first (faster)
bool use565 = true;
EGLint config_attribs[] = {
EGL_CONFIG_CAVEAT, EGL_NONE,
EGL_CONFORMANT, EGL_OPENGL_ES2_BIT,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
//EGL_CONFORMANT, EGL_OPENGL_ES2_BIT, // Emulator does not support this, in here, but will return conformant anyway, what?
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
EGL_COLOR_BUFFER_TYPE, EGL_RGB_BUFFER,
//EGL_COLOR_BUFFER_TYPE, EGL_RGB_BUFFER, // Emulator does not support this, what?
EGL_BUFFER_SIZE, 16,
EGL_RED_SIZE, 5,
EGL_GREEN_SIZE, 6,
EGL_BLUE_SIZE, 5,
EGL_DEPTH_SIZE, 16,
EGL_STENCIL_SIZE, 8,
(in_emulator ? EGL_NONE : EGL_CONFORMANT), EGL_OPENGL_ES2_BIT, // Ugly hack
(in_emulator ? EGL_NONE : EGL_COLOR_BUFFER_TYPE), EGL_RGB_BUFFER, // Ugly hack
EGL_NONE
};
EGLint num_configs;
@@ -134,10 +149,16 @@ bool NativeMapView::initializeDisplay() {
// Now try 8888
use565 = false;
config_attribs[9] = 32; // EGL_BUFFER_SIZE // Ensure we get 32bit color buffer on Tegra, 24 bit will be sorted first without it (slow software mode)
config_attribs[11] = 8; // EGL_RED_SIZE
config_attribs[13] = 8; // EGL_GREEN_SIZE
config_attribs[15] = 8; // EGL_BLUE_SIZE
// TODO removed these due to different indices
//config_attribs[9] = 32; // EGL_BUFFER_SIZE // Ensure we get 32bit color buffer on Tegra, 24 bit will be sorted first without it (slow software mode)
//config_attribs[11] = 8; // EGL_RED_SIZE
//config_attribs[13] = 8; // EGL_GREEN_SIZE
//config_attribs[15] = 8; // EGL_BLUE_SIZE
config_attribs[5] = 32; // EGL_BUFFER_SIZE // Ensure we get 32bit color buffer on Tegra, 24 bit will be sorted first without it (slow software mode)
config_attribs[7] = 8; // EGL_RED_SIZE
config_attribs[9] = 8; // EGL_GREEN_SIZE
config_attribs[11] = 8; // EGL_BLUE_SIZE
if (!eglChooseConfig(display, config_attribs, nullptr, 0, &num_configs)) {
LOG_ERROR("eglChooseConfig(NULL) returned error %d", eglGetError());
terminateDisplay();
@@ -304,12 +325,26 @@ EGLConfig NativeMapView::chooseConfig(const EGLConfig configs[],
LOG_INFO("Found %d configs", num_configs);
int chosen_config = -1;
bool is_caveat = false;
bool is_conformant = false;
for (int i = 0; i < num_configs; i++) {
LOG_INFO("Config %d:", i);
EGLint bits, red, green, blue, alpha, alpha_mask, depth, stencil,
EGLint caveat, conformant, bits, red, green, blue, alpha, alpha_mask, depth, stencil,
sample_buffers, samples;
if (!eglGetConfigAttrib(display, configs[i], EGL_CONFIG_CAVEAT, &caveat)) {
LOG_ERROR("eglGetConfigAttrib(EGL_CONFIG_CAVEAT) returned error %d",
eglGetError());
return nullptr;
}
if (!eglGetConfigAttrib(display, configs[i], EGL_CONFORMANT, &conformant)) {
LOG_ERROR("eglGetConfigAttrib(EGL_CONFORMANT) returned error %d",
eglGetError());
return nullptr;
}
if (!eglGetConfigAttrib(display, configs[i], EGL_BUFFER_SIZE, &bits)) {
LOG_ERROR("eglGetConfigAttrib(EGL_BUFFER_SIZE) returned error %d",
eglGetError());
@@ -372,7 +407,9 @@ EGLConfig NativeMapView::chooseConfig(const EGLConfig configs[],
eglGetError());
return nullptr;
}
LOG_INFO("Caveat: %d", caveat);
LOG_INFO("Conformant: %d", conformant);
LOG_INFO("Color: %d", bits);
LOG_INFO("Red: %d", red);
LOG_INFO("Green: %d", green);
@@ -397,6 +434,8 @@ EGLConfig NativeMapView::chooseConfig(const EGLConfig configs[],
if (config_ok) { // Choose the last matching config, that way we get RGBX if possible (since it is sorted highest to lowest bits)
chosen_config = i;
is_conformant = (conformant & EGL_OPENGL_ES2_BIT) == EGL_OPENGL_ES2_BIT;
is_caveat = caveat != EGL_NONE;
}
}
@@ -406,6 +445,12 @@ EGLConfig NativeMapView::chooseConfig(const EGLConfig configs[],
} else {
return nullptr;
}
if (!is_caveat) {
LOG_WARN("Chosen config has a caveat.");
}
if (!is_conformant) {
LOG_WARN("Chosen config is not conformant.");
}
}
void NativeMapView::start() {
@@ -429,7 +474,7 @@ void NativeMapView::start() {
log_gl_string(GL_VENDOR, "Vendor");
log_gl_string(GL_RENDERER, "Renderer");
log_gl_string(GL_VERSION, "Version");
log_gl_string(GL_SHADING_LANGUAGE_VERSION, "SL Version");
log_gl_string(GL_SHADING_LANGUAGE_VERSION, "SL Version"); // In the emulator this returns NULL with error code 0? https://code.google.com/p/android/issues/detail?id=78977
log_gl_string(GL_EXTENSIONS, "Extensions");
loadExtensions();