void LineAtlas::upload(gl::Context& context, gl::TextureUnit unit) {
if (!texture) {
texture = context.createTexture(image, unit);
} else if (dirty) {
context.updateTexture(*texture, image, unit);
}
dirty = false;
}
void LineAtlas::bind(gl::Context& context, gl::TextureUnit unit) {
bool first = false;
if (!texture) {
texture = context.createTexture();
context.activeTexture = unit;
context.texture[unit] = *texture;
MBGL_CHECK_ERROR(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
MBGL_CHECK_ERROR(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
MBGL_CHECK_ERROR(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT));
MBGL_CHECK_ERROR(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE));
first = true;
} else if (context.texture[unit] != *texture) {
context.activeTexture = unit;
context.texture[unit] = *texture;
}
if (dirty) {
context.activeTexture = unit;
if (first) {
MBGL_CHECK_ERROR(glTexImage2D(
GL_TEXTURE_2D, // GLenum target
0, // GLint level
GL_ALPHA, // GLint internalformat
width, // GLsizei width
height, // GLsizei height
0, // GLint border
GL_ALPHA, // GLenum format
GL_UNSIGNED_BYTE, // GLenum type
data.get() // const GLvoid * data
));
} else {
MBGL_CHECK_ERROR(glTexSubImage2D(
GL_TEXTURE_2D, // GLenum target
0, // GLint level
0, // GLint xoffset
0, // GLint yoffset
width, // GLsizei width
height, // GLsizei height
GL_ALPHA, // GLenum format
GL_UNSIGNED_BYTE, // GLenum type
data.get() // const GLvoid *pixels
));
}
dirty = false;
}
}
void Raster::upload(gl::Context& context, uint32_t unit) {
if (!images.empty() && !texture) {
texture = context.createTexture();
context.activeTexture = unit;
context.texture[unit] = *texture;
updateFilter();
#ifndef GL_ES_VERSION_2_0
MBGL_CHECK_ERROR(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, images.size()));
#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));
GLint level = 0;
for (auto& img : images) {
MBGL_CHECK_ERROR(glTexImage2D(
GL_TEXTURE_2D, level++, GL_RGBA, static_cast<GLsizei>(img.width),
static_cast<GLsizei>(img.height), 0, GL_RGBA, GL_UNSIGNED_BYTE, img.data.get()));
}
size = { { images.front().width, images.front().height } };
images.clear();
images.shrink_to_fit();
}
}
void RasterBucket::upload(gl::Context& context) {
texture = context.createTexture(image);
image = {};
uploaded = true;
}