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#pragma once
#include <mbgl/gl/object.hpp>
#include <mbgl/gl/state.hpp>
#include <mbgl/gl/value.hpp>
#include <mbgl/gl/texture.hpp>
#include <mbgl/gl/renderbuffer.hpp>
#include <mbgl/gl/framebuffer.hpp>
#include <mbgl/gl/vertex_buffer.hpp>
#include <mbgl/gl/index_buffer.hpp>
#include <mbgl/gl/attribute.hpp>
#include <mbgl/util/noncopyable.hpp>
#include <memory>
#include <vector>
#include <array>
namespace mbgl {
class View;
namespace gl {
constexpr size_t TextureMax = 64;
class Context : private util::noncopyable {
public:
~Context();
UniqueProgram createProgram();
UniqueShader createVertexShader();
UniqueShader createFragmentShader();
UniqueTexture createTexture();
UniqueVertexArray createVertexArray();
template <class V>
VertexBuffer<V> createVertexBuffer(std::vector<V>&& v) {
return VertexBuffer<V> {
v.size(),
createVertexBuffer(v.data(), v.size() * sizeof(V))
};
}
template <class P>
IndexBuffer<P> createIndexBuffer(std::vector<P>&& v) {
return IndexBuffer<P> {
createIndexBuffer(v.data(), v.size() * sizeof(P))
};
}
template <RenderbufferType type>
Renderbuffer<type> createRenderbuffer(const Size size) {
static_assert(type == RenderbufferType::RGBA || type == RenderbufferType::DepthStencil,
"invalid renderbuffer type");
return { size, createRenderbuffer(type, size) };
}
Framebuffer createFramebuffer(const Renderbuffer<RenderbufferType::RGBA>&,
const Renderbuffer<RenderbufferType::DepthStencil>&);
Framebuffer createFramebuffer(const Renderbuffer<RenderbufferType::RGBA>&);
Framebuffer createFramebuffer(const Texture&,
const Renderbuffer<RenderbufferType::DepthStencil>&);
Framebuffer createFramebuffer(const Texture&);
// Create a texture from an image with data.
template <typename Image>
Texture createTexture(const Image& image, TextureUnit unit = 0) {
return { image.size, createTexture(image.size, image.data.get(), unit) };
}
// Creates an empty texture with the specified dimensions.
Texture createTexture(const Size size, TextureUnit unit = 0) {
return { size, createTexture(size, nullptr, unit) };
}
void bindTexture(Texture&,
TextureUnit = 0,
TextureFilter = TextureFilter::Nearest,
TextureMipMap = TextureMipMap::No);
template <class Shader, class Vertex>
void bindAttributes(const Shader& shader, const VertexBuffer<Vertex>&, const int8_t* offset) {
static_assert(std::is_same<typename Shader::VertexType, Vertex>::value, "vertex type mismatch");
for (const auto& binding : AttributeBindings<Shader, Vertex>()(shader)) {
bindAttribute(binding, sizeof(Vertex), offset);
}
}
// Actually remove the objects we marked as abandoned with the above methods.
// Only call this while the OpenGL context is exclusive to this thread.
void performCleanup();
// Drain pools and remove abandoned objects, in preparation for destroying the store.
// Only call this while the OpenGL context is exclusive to this thread.
void reset();
bool empty() const {
return pooledTextures.empty()
&& abandonedPrograms.empty()
&& abandonedShaders.empty()
&& abandonedBuffers.empty()
&& abandonedTextures.empty()
&& abandonedVertexArrays.empty()
&& abandonedFramebuffers.empty();
}
void setDirtyState();
State<value::StencilFunc> stencilFunc;
State<value::StencilMask> stencilMask;
State<value::StencilTest> stencilTest;
State<value::StencilOp> stencilOp;
State<value::DepthRange> depthRange;
State<value::DepthMask> depthMask;
State<value::DepthTest> depthTest;
State<value::DepthFunc> depthFunc;
State<value::Blend> blend;
State<value::BlendFunc> blendFunc;
State<value::BlendColor> blendColor;
State<value::ColorMask> colorMask;
State<value::ClearDepth> clearDepth;
State<value::ClearColor> clearColor;
State<value::ClearStencil> clearStencil;
State<value::Program> program;
State<value::LineWidth> lineWidth;
State<value::ActiveTexture> activeTexture;
State<value::BindFramebuffer> bindFramebuffer;
State<value::Viewport> viewport;
State<value::BindRenderbuffer> bindRenderbuffer;
#if not MBGL_USE_GLES2
State<value::PixelZoom> pixelZoom;
State<value::RasterPos> rasterPos;
#endif // MBGL_USE_GLES2
std::array<State<value::BindTexture>, 2> texture;
State<value::BindVertexBuffer> vertexBuffer;
State<value::BindElementBuffer> elementBuffer;
State<value::BindVertexArray> vertexArrayObject;
private:
UniqueBuffer createVertexBuffer(const void* data, std::size_t size);
UniqueBuffer createIndexBuffer(const void* data, std::size_t size);
UniqueTexture createTexture(Size size, const void* data, TextureUnit);
UniqueFramebuffer createFramebuffer();
UniqueRenderbuffer createRenderbuffer(RenderbufferType, Size size);
void bindAttribute(const AttributeBinding&, std::size_t stride, const int8_t* offset);
friend detail::ProgramDeleter;
friend detail::ShaderDeleter;
friend detail::BufferDeleter;
friend detail::TextureDeleter;
friend detail::VertexArrayDeleter;
friend detail::FramebufferDeleter;
friend detail::RenderbufferDeleter;
std::vector<TextureID> pooledTextures;
std::vector<ProgramID> abandonedPrograms;
std::vector<ShaderID> abandonedShaders;
std::vector<BufferID> abandonedBuffers;
std::vector<TextureID> abandonedTextures;
std::vector<VertexArrayID> abandonedVertexArrays;
std::vector<FramebufferID> abandonedFramebuffers;
std::vector<RenderbufferID> abandonedRenderbuffers;
};
} // namespace gl
} // namespace mbgl
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