merge `origin/master` into `master`

1 files changed, 66 insertions, 0 deletions

diff --git a/mwe/resource-manager/TextureMap.cpp b/mwe/resource-manager/TextureMap.cpp
new file mode 100644
index 0000000..d82975c
--- /dev/null
+++ b/mwe/resource-manager/TextureMap.cpp
@@ -0,0 +1,66 @@
+#include "TextureMap.h"
+
+#define STB_IMAGE_IMPLEMENTATION
+#include "stb_image.h"
+
+#include <cstdint>
+#include <iostream>
+
+TextureMap::TextureMap() : m_texture(nullptr) {}
+
+TextureMap::~TextureMap() {
+	if (m_texture) {
+		SDL_DestroyTexture(m_texture);
+	}
+}
+
+//public
+bool TextureMap::loadFromFile(const std::string & path,
+							  SDL_Renderer * renderer) {
+	assert(renderer != nullptr);
+	assert(!path.empty());
+
+	std::int32_t x = 0;
+	std::int32_t y = 0;
+	std::int32_t c = 0;
+	unsigned char * data = stbi_load(path.c_str(), &x, &y, &c, 0);
+
+	if (data) {
+		std::int32_t pitch = x * c;
+		pitch = (pitch + 3) & ~3;
+
+		constexpr std::int32_t rmask = 0x000000ff;
+		constexpr std::int32_t gmask = 0x0000ff00;
+		constexpr std::int32_t bmask = 0x00ff0000;
+		const std::int32_t amask = c == 4 ? 0xff000000 : 0;
+
+		auto * surface = SDL_CreateRGBSurfaceFrom(data, x, y, c * 8, pitch,
+												  rmask, gmask, bmask, amask);
+
+		if (!surface) {
+			std::cerr << "Unable to create texture surface: " << SDL_GetError()
+					  << "\n";
+			stbi_image_free(data);
+			return false;
+		}
+
+		m_texture = SDL_CreateTextureFromSurface(renderer, surface);
+
+		SDL_FreeSurface(surface);
+		stbi_image_free(data);
+
+		if (!m_texture) {
+			std::cerr << "Failed to create texture for " << path << "\n";
+			return false;
+		}
+
+		//sets alpha blending
+		//SDL_SetTextureBlendMode(m_texture, SDL_BLENDMODE_BLEND);
+		m_size.x = x;
+		m_size.y = y;
+
+		return true;
+	}
+
+	return false;
+}