127 lines
4.0 KiB
C++
127 lines
4.0 KiB
C++
#include "bitmap.h"
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#include <SDL.h>
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#include <cstdint>
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#include <memory>
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#include "absl/status/status.h"
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#include "absl/status/statusor.h"
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#include "absl/strings/str_cat.h"
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#include "app/core/constants.h"
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#include "app/gfx/snes_palette.h"
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namespace yaze {
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namespace app {
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namespace gfx {
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namespace {
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void GrayscalePalette(SDL_Palette *palette) {
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for (int i = 0; i < 8; i++) {
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palette->colors[i].r = i * 31;
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palette->colors[i].g = i * 31;
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palette->colors[i].b = i * 31;
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}
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}
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} // namespace
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Bitmap::Bitmap(int width, int height, int depth, uchar *data) {
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Create(width, height, depth, data);
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}
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Bitmap::Bitmap(int width, int height, int depth, int data_size) {
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Create(width, height, depth, data_size);
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}
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Bitmap::Bitmap(int width, int height, int depth, uchar *data, int data_size) {
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Create(width, height, depth, data, data_size);
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}
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// Pass raw pixel data directly to the surface
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void Bitmap::Create(int width, int height, int depth, uchar *data) {
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width_ = width;
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height_ = height;
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depth_ = depth;
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pixel_data_ = data;
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surface_ = std::unique_ptr<SDL_Surface, SDL_Surface_Deleter>(
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SDL_CreateRGBSurfaceWithFormat(0, width_, height_, depth_,
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SDL_PIXELFORMAT_INDEX8),
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SDL_Surface_Deleter());
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surface_->pixels = pixel_data_;
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GrayscalePalette(surface_->format->palette);
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}
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// Reserves data to later draw to surface via pointer
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void Bitmap::Create(int width, int height, int depth, int size) {
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width_ = width;
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height_ = height;
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depth_ = depth;
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data_size_ = size;
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data_.reserve(size);
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pixel_data_ = data_.data();
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surface_ = std::unique_ptr<SDL_Surface, SDL_Surface_Deleter>(
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SDL_CreateRGBSurfaceWithFormat(0, width, height, depth,
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SDL_PIXELFORMAT_INDEX8),
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SDL_Surface_Deleter());
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surface_->pixels = pixel_data_;
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GrayscalePalette(surface_->format->palette);
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}
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// Pass raw pixel data directly to the surface
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void Bitmap::Create(int width, int height, int depth, uchar *data, int size) {
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width_ = width;
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height_ = height;
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depth_ = depth;
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pixel_data_ = data;
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data_size_ = size;
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surface_ = std::unique_ptr<SDL_Surface, SDL_Surface_Deleter>(
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SDL_CreateRGBSurfaceWithFormat(0, width_, height_, depth_,
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SDL_PIXELFORMAT_INDEX8),
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SDL_Surface_Deleter());
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surface_->pixels = pixel_data_;
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GrayscalePalette(surface_->format->palette);
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}
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void Bitmap::Create(int width, int height, int depth, Bytes data) {
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width_ = width;
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height_ = height;
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depth_ = depth;
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data_ = data;
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pixel_data_ = data_.data();
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surface_ = std::unique_ptr<SDL_Surface, SDL_Surface_Deleter>(
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SDL_CreateRGBSurfaceWithFormat(0, width_, height_, depth_,
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SDL_PIXELFORMAT_INDEX8),
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SDL_Surface_Deleter());
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surface_->pixels = pixel_data_;
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GrayscalePalette(surface_->format->palette);
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}
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// Creates the texture that will be displayed to the screen.
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void Bitmap::CreateTexture(std::shared_ptr<SDL_Renderer> renderer) {
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texture_ = std::shared_ptr<SDL_Texture>{
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SDL_CreateTextureFromSurface(renderer.get(), surface_.get()),
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SDL_Texture_Deleter{}};
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}
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// Convert SNESPalette to SDL_Palette for surface.
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void Bitmap::ApplyPalette(const SNESPalette &palette) {
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palette_ = palette;
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for (int i = 0; i < palette.size_; ++i) {
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if (palette.GetColor(i).transparent) {
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surface_->format->palette->colors[i].r = 0;
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surface_->format->palette->colors[i].g = 0;
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surface_->format->palette->colors[i].b = 0;
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surface_->format->palette->colors[i].a = 0;
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} else {
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surface_->format->palette->colors[i].r = palette.GetColor(i).rgb.x;
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surface_->format->palette->colors[i].g = palette.GetColor(i).rgb.y;
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surface_->format->palette->colors[i].b = palette.GetColor(i).rgb.z;
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surface_->format->palette->colors[i].a = palette.GetColor(i).rgb.w;
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}
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}
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}
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} // namespace gfx
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} // namespace app
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} // namespace yaze
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