diff options
| -rw-r--r-- | include/video.hpp | 104 | ||||
| -rw-r--r-- | video.cpp | 37 |
2 files changed, 138 insertions, 3 deletions
diff --git a/include/video.hpp b/include/video.hpp index dc315ed..1d71d21 100644 --- a/include/video.hpp +++ b/include/video.hpp @@ -13,6 +13,8 @@ extern "C" { namespace wsdl2 { // forward declarations + class texture; + class renderer; class window; // name aliases @@ -23,13 +25,111 @@ namespace wsdl2 { std::uint8_t r, g, b, a; }; + enum class blend_mode { + // TODO: map blend modes + unimplemented + }; + + /// a graphic object allocated in the VRAM, + /// the CPU has not much control of this buffer + class texture { + public: + enum class pixformat : Uint32 { + unknown = SDL_PIXELFORMAT_UNKNOWN, + index1lsb = SDL_PIXELFORMAT_INDEX1LSB, + index1msb = SDL_PIXELFORMAT_INDEX1MSB, + index4lsb = SDL_PIXELFORMAT_INDEX4LSB, + index4msb = SDL_PIXELFORMAT_INDEX4MSB, + index8 = SDL_PIXELFORMAT_INDEX8, + rgb332 = SDL_PIXELFORMAT_RGB332, + rgb444 = SDL_PIXELFORMAT_RGB444, + rgb555 = SDL_PIXELFORMAT_RGB555, + bgr555 = SDL_PIXELFORMAT_BGR555, + argb4444 = SDL_PIXELFORMAT_ARGB4444, + rgba4444 = SDL_PIXELFORMAT_RGBA4444, + abgr4444 = SDL_PIXELFORMAT_ABGR4444, + bgra4444 = SDL_PIXELFORMAT_BGRA4444, + argb1555 = SDL_PIXELFORMAT_ARGB1555, + rgba5551 = SDL_PIXELFORMAT_RGBA5551, + abgr1555 = SDL_PIXELFORMAT_ABGR1555, + bgra5551 = SDL_PIXELFORMAT_BGRA5551, + rgb565 = SDL_PIXELFORMAT_RGB565, + bgr565 = SDL_PIXELFORMAT_BGR565, + rgb24 = SDL_PIXELFORMAT_RGB24, + bgr24 = SDL_PIXELFORMAT_BGR24, + rgb888 = SDL_PIXELFORMAT_RGB888, + rgbx8888 = SDL_PIXELFORMAT_RGBX8888, + bgr888 = SDL_PIXELFORMAT_BGR888, + bgrx8888 = SDL_PIXELFORMAT_BGRX8888, + argb8888 = SDL_PIXELFORMAT_ARGB8888, + rgba8888 = SDL_PIXELFORMAT_RGBA8888, + abgr8888 = SDL_PIXELFORMAT_ABGR8888, + bgra8888 = SDL_PIXELFORMAT_BGRA8888, + argb2101010 = SDL_PIXELFORMAT_ARGB2101010, + }; + + enum class access : int { + static_ = SDL_TEXTUREACCESS_STATIC, + streaming = SDL_TEXTUREACCESS_STREAMING, + target = SDL_TEXTUREACCESS_TARGET + }; + + const pixformat _format; + const access _access; + + texture() = delete; + + // TODO: create a texture copy constructor? + texture(const texture& other) = delete; + // TODO: create surface wrapper class + // texture(const surface& surf); + + texture(renderer& r, pixformat p, access a, std::size_t width, std::size_t height); + virtual ~texture(); + + /// lock a portion to be write-only + // TODO: needs surface wrapper class + // bool lock(const rect& region, const surface&); + inline void unlock() { SDL_UnlockTexture(m_texture); } + + inline bool alpha(std::uint8_t val) { + int supported = SDL_SetTextureAlphaMod(m_texture, val); + if (supported == -1) + return false; + else if (supported == 0) + return true; + + util::check(supported); + return false; + + } + + inline std::uint8_t alpha() { + std::uint8_t val; + util::check(0 == SDL_GetTextureAlphaMod(m_texture, &val)); + + return val; + } + + private: + renderer& m_renderer; + SDL_Texture *m_texture; + + // dirty C code + SDL_Texture* sdl(); + }; + + /// the guy who does the actual hard stuff class renderer { public: friend class window; + friend class texture; renderer(window& w); + renderer(texture& t); virtual ~renderer(); + inline void set_target() {} inline void clear() { SDL_RenderClear(sdl()); } inline void present() { SDL_RenderPresent(sdl()); } @@ -133,6 +233,8 @@ namespace wsdl2 { SDL_Renderer* sdl(); }; + + /// a basic wrapper around a SDL window class window { public: friend class renderer; @@ -170,4 +272,4 @@ namespace wsdl2 { -}
\ No newline at end of file +} @@ -12,6 +12,39 @@ extern "C" { using namespace wsdl2; + +/* class texture */ + +texture::texture(renderer& r, texture::pixformat p, texture::access a, + std::size_t width, std::size_t height) + + : _format(p), _access(a), m_renderer(r) +{ + m_texture = SDL_CreateTexture(r.m_renderer, + static_cast<Uint32>(p), static_cast<int>(a), + static_cast<int>(width), static_cast<int>(height) + ); +} + +texture::~texture() { + if (m_texture != NULL) + SDL_DestroyTexture(m_texture); + else + npdebug("warning: m_texture is NULL"); +} + +SDL_Texture* texture::sdl() { +#ifdef DEBUG + if (m_texture == NULL) { + throw std::runtime_error( + "attempted to call texture::sdl() when m_texture is NULL" + ); + } +#endif + + return m_texture; +} + /* class renderer */ renderer::renderer() { @@ -19,7 +52,7 @@ renderer::renderer() { } SDL_Renderer * renderer::sdl() { -#ifndef DEBUG +#ifdef DEBUG if (m_renderer == NULL) { throw std::runtime_error( "attempted to call renderer::sdl() when m_renderer is NULL" @@ -107,7 +140,7 @@ void window::update() { } SDL_Window * window::sdl() { -#ifndef DEBUG +#ifdef DEBUG if (m_window == NULL) { throw std::runtime_error( "attempted to call window::sdl() when m_window is NULL" |