[drape][metal] Added states.

1 files changed, 51 insertions, 0 deletions

diff --git a/drape/gl_gpu_program.hpp b/drape/gl_gpu_program.hpp
new file mode 100644
index 0000000000..d446a3fb13
--- /dev/null
+++ b/drape/gl_gpu_program.hpp
@@ -0,0 +1,51 @@
+#pragma once
+
+#include "drape/gl_constants.hpp"
+#include "drape/gpu_program.hpp"
+#include "drape/pointers.hpp"
+#include "drape/shader.hpp"
+
+#include <map>
+#include <string>
+#include <vector>
+
+namespace dp
+{
+class GLGpuProgram : public GpuProgram
+{
+public:
+  GLGpuProgram(std::string const & programName,
+               ref_ptr<Shader> vertexShader, ref_ptr<Shader> fragmentShader);
+  ~GLGpuProgram() override;
+
+  void Bind() override;
+  void Unbind() override;
+
+  int8_t GetAttributeLocation(std::string const & attributeName) const;
+  int8_t GetUniformLocation(std::string const & uniformName) const;
+  glConst GetUniformType(std::string const & uniformName) const;
+
+  struct UniformInfo
+  {
+    int8_t m_location = -1;
+    glConst m_type = gl_const::GLFloatType;
+  };
+
+  using UniformsInfo = std::map<std::string, UniformInfo>;
+  UniformsInfo const & GetUniformsInfo() const;
+  uint32_t GetNumericUniformsCount() const { return m_numericUniformsCount; }
+
+private:
+  void LoadUniformLocations();
+  uint32_t CalculateNumericUniformsCount() const;
+
+  uint32_t m_programID;
+
+  ref_ptr<Shader> m_vertexShader;
+  ref_ptr<Shader> m_fragmentShader;
+
+  UniformsInfo m_uniforms;
+  uint8_t m_textureSlotsCount = 0;
+  uint32_t m_numericUniformsCount = 0;
+};
+}  // namespace dp