void FrameHistory::bind(gl::ObjectStore& store) {
if (!texture) {
texture = store.createTexture();
MBGL_CHECK_ERROR(glBindTexture(GL_TEXTURE_2D, *texture));
#ifndef GL_ES_VERSION_2_0
MBGL_CHECK_ERROR(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0));
#endif
MBGL_CHECK_ERROR(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE));
MBGL_CHECK_ERROR(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE));
MBGL_CHECK_ERROR(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST));
MBGL_CHECK_ERROR(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST));
} else {
MBGL_CHECK_ERROR(glBindTexture(GL_TEXTURE_2D, *texture));
}
}
void FrameHistory::bind(gl::ObjectStore& store, gl::Config& config, uint32_t unit) {
if (!texture) {
texture = store.createTexture();
config.activeTexture = unit;
config.texture[unit] = *texture;
#ifndef GL_ES_VERSION_2_0
MBGL_CHECK_ERROR(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0));
#endif
MBGL_CHECK_ERROR(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE));
MBGL_CHECK_ERROR(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE));
MBGL_CHECK_ERROR(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST));
MBGL_CHECK_ERROR(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST));
} else if (config.texture[unit] != *texture) {
config.activeTexture = unit;
config.texture[unit] = *texture;
}
}
void SpriteAtlas::bind(bool linear, gl::ObjectStore& objectStore) {
if (!data) {
return; // Empty atlas
}
if (!texture) {
texture = objectStore.createTexture();
MBGL_CHECK_ERROR(glBindTexture(GL_TEXTURE_2D, *texture));
#ifndef GL_ES_VERSION_2_0
MBGL_CHECK_ERROR(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0));
#endif
// We are using clamp to edge here since OpenGL ES doesn't allow GL_REPEAT on NPOT textures.
// We use those when the pixelRatio isn't a power of two, e.g. on iPhone 6 Plus.
MBGL_CHECK_ERROR(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE));
MBGL_CHECK_ERROR(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE));
fullUploadRequired = true;
} else {
MBGL_CHECK_ERROR(glBindTexture(GL_TEXTURE_2D, *texture));
}
GLuint filter_val = linear ? GL_LINEAR : GL_NEAREST;
if (filter_val != filter) {
MBGL_CHECK_ERROR(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter_val));
MBGL_CHECK_ERROR(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter_val));
filter = filter_val;
}
if (dirty) {
std::lock_guard<std::recursive_mutex> lock(mtx);
if (fullUploadRequired) {
MBGL_CHECK_ERROR(glTexImage2D(
GL_TEXTURE_2D, // GLenum target
0, // GLint level
GL_RGBA, // GLint internalformat
pixelWidth, // GLsizei width
pixelHeight, // GLsizei height
0, // GLint border
GL_RGBA, // GLenum format
GL_UNSIGNED_BYTE, // GLenum type
data.get() // const GLvoid * data
));
fullUploadRequired = false;
} else {
MBGL_CHECK_ERROR(glTexSubImage2D(
GL_TEXTURE_2D, // GLenum target
0, // GLint level
0, // GLint xoffset
0, // GLint yoffset
pixelWidth, // GLsizei width
pixelHeight, // GLsizei height
GL_RGBA, // GLenum format
GL_UNSIGNED_BYTE, // GLenum type
data.get() // const GLvoid *pixels
));
}
dirty = false;
#ifndef GL_ES_VERSION_2_0
// platform::showColorDebugImage("Sprite Atlas", reinterpret_cast<const char*>(data.get()),
// pixelWidth, pixelHeight, pixelWidth, pixelHeight);
#endif
}
};