0bfd7b0f43
This changes the clip IDs from sequential to a huffman prefix tree, meaning that parent tiles share the same prefix with child tiles (but are shorter). This allows us to use the same checkerboard pattern to draw all tiles. TODO: - make sure we're not overflowing the 8 bit limit of the stencil buffer - draw all checkerboard fields at the same time, with one draw call - fix raster drawing (fading, clipping) refs #132
74 lines
1.3 KiB
C++
74 lines
1.3 KiB
C++
#ifndef LLMR_UTIL_RASTER
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#define LLMR_UTIL_RASTER
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#include <llmr/util/transition.hpp>
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#include <llmr/util/texturepool.hpp>
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#include <string>
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#include <mutex>
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#include <memory>
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typedef struct uv_loop_s uv_loop_t;
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namespace llmr {
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class Raster : public std::enable_shared_from_this<Raster> {
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public:
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Raster(Texturepool &texturepool);
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~Raster();
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// load image data
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bool load(const std::string &img);
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// bind current texture
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void bind(bool linear = false);
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// loaded status
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bool isLoaded() const;
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// transitions
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void beginFadeInTransition();
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bool needsTransition() const;
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void updateTransitions(time now);
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public:
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// loaded image dimensions
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uint32_t width = 0, height = 0;
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// has been uploaded to texture
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bool textured = false;
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// the uploaded texture
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uint32_t texture = 0;
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// texture opacity
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double opacity = 0;
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private:
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// load raw pixels
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void loadImage(const std::string& data);
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private:
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mutable std::mutex mtx;
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// raw pixels have been loaded
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bool loaded = false;
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// shared texture pool
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Texturepool &texturepool;
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// min/mag filter
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uint32_t filter = 0;
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// the raw pixels
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char *img = nullptr;
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// fade in transition
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std::shared_ptr<util::transition> fade_transition = nullptr;
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};
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}
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#endif
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