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compress file when saving, using bbox, dirty flags and PNG compression

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This commit is contained in:
omigamedev
2017-05-10 01:27:57 +01:00
parent 6548ac3748
commit fbb73ccbbb
7 changed files with 100 additions and 30 deletions
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91
engine/canvas.cpp
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@@ -334,6 +334,13 @@ void ui::Canvas::stroke_commit()
glReadPixels(m_dirty_box[i].x, m_dirty_box[i].y, box_sz.x, box_sz.y, GL_RGBA, GL_UNSIGNED_BYTE, action->m_image[i].get());
action->m_box[i] = m_dirty_box[i];
action->m_old_box[i] = m_layers[m_current_layer_idx].m_dirty_box[i];
action->m_old_dirty[i] = m_layers[m_current_layer_idx].m_dirty_face[i];
auto& lbox = m_layers[m_current_layer_idx].m_dirty_box[i];
lbox.xy = glm::min(m_dirty_box[i].xy(), lbox.xy());
lbox.zw = glm::max(m_dirty_box[i].zw(), lbox.zw());
m_layers[m_current_layer_idx].m_dirty_face[i] = true;
// copy to tmp2 for layer blending
glActiveTexture(GL_TEXTURE0);
@@ -495,7 +502,7 @@ void ui::Canvas::clear_context()
m_latlong.destroy();
};
void ui::Canvas::save(std::string data_path)
void ui::Canvas::export_equirectangular(std::string data_path)
{
// save viewport and clear color states
GLint vp[4];
@@ -632,7 +639,28 @@ void ui::Canvas::project_save(std::string data_path)
auto snap = m_layers[i].snapshot(data_path);
for (int plane_index = 0; plane_index < 6; plane_index++)
{
fwrite(snap.image[plane_index].get(), 1, m_width * m_height * 4, fp);
int has_data = snap.m_dirty_face[plane_index] ? 1 : 0;
fwrite(&has_data, sizeof(int), 1, fp);
if (has_data)
{
glm::ivec4 b = snap.m_dirty_box[plane_index];
glm::vec2 sz = b.zw() - b.xy();
int box[4] = { b.x, b.y, b.z, b.w };
fwrite(&box, sizeof(box), 1, fp);
std::vector<uint8_t> compressed;
auto callback = [](void *context, void *data, int size)
{
std::vector<uint8_t>* buffer = static_cast<std::vector<uint8_t>*>(context);
buffer->insert(buffer->end(), (uint8_t*)data, (uint8_t*)data + size);
};
int ret = stbi_write_png_to_func(callback, &compressed, sz.x, sz.y, 4, snap.image[plane_index].get(), sz.x * 4);
int data_size = compressed.size();
fwrite(&data_size, sizeof(int), 1, fp);
fwrite(compressed.data(), 1, compressed.size(), fp);
}
}
}
fclose(fp);
@@ -665,7 +693,7 @@ void ui::Canvas::project_open(std::string data_path)
const int bytes = m_width * m_height * 4;
Layer::Snapshot snap;
snap.create(m_width, m_height);
snap.create(m_width, m_height); // allocate single data, no box should be bigger
m_layers.clear();
m_order.clear();
@@ -681,7 +709,26 @@ void ui::Canvas::project_open(std::string data_path)
fread((char*)name.data(), name_len, 1, fp);
for (int plane_index = 0; plane_index < 6; plane_index++)
{
fread(snap.image[plane_index].get(), 1, bytes, fp);
int has_data;
fread(&has_data, sizeof(int), 1, fp);
snap.m_dirty_face[plane_index] = has_data;
if (has_data)
{
int b[4];
fread(&b, sizeof(b), 1, fp);
snap.m_dirty_box[plane_index] = glm::vec4(b[0], b[1], b[2], b[3]);
glm::vec2 sz = snap.m_dirty_box[plane_index].zw() - snap.m_dirty_box[plane_index].xy();
int data_size;
fread(&data_size, sizeof(int), 1, fp);
std::vector<uint8_t> compressed(data_size);
fread(compressed.data(), 1, data_size, fp);
int imgw, imgh, imgc;
uint8_t* rgba = stbi_load_from_memory(compressed.data(), data_size, &imgw, &imgh, &imgc, 4);
std::copy(rgba, rgba + (imgw*imgh * 4), snap.image[plane_index].get());
delete rgba;
}
}
m_layers.emplace_back();
m_layers.back().create(m_width, m_height, name.c_str());
@@ -814,15 +861,21 @@ void ui::Layer::destroy()
void ui::Layer::restore(const Snapshot& snap)
{
//clear({ 0, 0, 0, 0 });
for (int i = 0; i < 6; i++)
{
if (!snap.image[i])
if (snap.image[i] == nullptr || snap.m_dirty_face[i] == false)
continue;
m_dirty_box[i] = snap.m_dirty_box[i];
m_dirty_face[i] = snap.m_dirty_face[i];
m_rtt[i].recreate(); // TODO: this should not be recreated here! Sorry I messed up with this, just quick fix DON'T SHIP!!
m_rtt[i].bindTexture();
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, m_rtt[i].getWidth(), m_rtt[i].getHeight(), GL_RGBA, GL_UNSIGNED_BYTE, snap.image[i].get());
glm::vec2 box_sz = m_dirty_box[i].zw() - m_dirty_box[i].xy();
glTexSubImage2D(GL_TEXTURE_2D, 0, m_dirty_box[i].x, m_dirty_box[i].y, box_sz.x, box_sz.y, GL_RGBA, GL_UNSIGNED_BYTE, snap.image[i].get());
m_rtt[i].unbindTexture();
LOG("restore face %d - %d bytes (%dx%d)", i, m_rtt[i].bytes(), m_rtt[i].getWidth(), m_rtt[i].getHeight());
LOG("restore face %d - %d bytes (%dx%d)", i, (int)box_sz.x * (int)box_sz.y * 4, (int)box_sz.x, (int)box_sz.y);
}
}
@@ -835,9 +888,22 @@ ui::Layer::Snapshot ui::Layer::snapshot(std::string data_path)
glBindFramebuffer(GL_FRAMEBUFFER, 0);
for (int i = 0; i < 6; i++)
{
snap.m_dirty_box[i] = m_dirty_box[i];
snap.m_dirty_face[i] = m_dirty_face[i];
if (!m_dirty_face[i])
continue;
snap.image[i] = std::make_unique<uint8_t[]>(m_rtt[i].bytes());
m_rtt[i].readTextureData(snap.image[i].get());
LOG("snapshot face %d - %d bytes (%dx%d)", i, m_rtt[i].bytes(), m_rtt[i].getWidth(), m_rtt[i].getHeight());
glReadBuffer(GL_BACK);
m_rtt[i].bindFramebuffer();
glm::vec2 box_sz = m_dirty_box[i].zw() - m_dirty_box[i].xy();
glReadPixels(m_dirty_box[i].x, m_dirty_box[i].y, box_sz.x, box_sz.y, GL_RGBA, GL_UNSIGNED_BYTE, snap.image[i].get());
m_rtt[i].unbindFramebuffer();
glReadBuffer(GL_NONE);
LOG("snapshot face %d - %d bytes (%dx%d)", i, (int)box_sz.x * (int)box_sz.y * 4, (int)box_sz.x, (int)box_sz.y);
static char name[128];
sprintf(name, "%s/Layer%d-%d.png", data_path.c_str(), counter, i);
//int ret = stbi_write_png(name, m_rtt[i].getWidth(), m_rtt[i].getHeight(), 4, snap.image[i].get(), m_rtt[i].stride());
@@ -858,6 +924,9 @@ void ui::Layer::clear(const glm::vec4& c)
m_rtt[i].bindFramebuffer();
glClear(GL_COLOR_BUFFER_BIT);
m_rtt[i].unbindFramebuffer();
m_dirty_box[i] = glm::vec4(w, h, 0, 0); // reset bounding box
m_dirty_face[i] = false;
}
// restore clear color state
@@ -867,12 +936,16 @@ void ui::Layer::clear(const glm::vec4& c)
bool ui::Layer::create(int width, int height, std::string name)
{
m_name = name;
w = width;
h = height;
for (int i = 0; i < 6; i++)
{
m_rtt[i].create(width, height);
m_rtt[i].bindFramebuffer();
m_rtt[i].clear();
m_rtt[i].unbindFramebuffer();
m_dirty_box[i] = glm::vec4(w, h, 0, 0); // reset bounding box
m_dirty_face[i] = false;
}
return true;
}