gl_query.hh

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/* SPDX-FileCopyrightText: 2020 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#pragma once
 
#include "BLI_vector.hh"
 
#include "gpu_query.hh"
 
#include <epoxy/gl.h>
 
namespace blender::gpu {
 
class GLQueryPool : public QueryPool {
 private:
  Vector<GLuint, QUERY_MIN_LEN> query_ids_;
  GPUQueryType type_;
  GLenum gl_type_;
  uint32_t query_issued_;
  bool initialized_ = false;
 
 public:
  ~GLQueryPool();
 
  void init(GPUQueryType type) override;
 
  void begin_query() override;
  void end_query() override;
 
  void get_occlusion_result(MutableSpan<uint32_t> r_values) override;
};
 
static inline GLenum to_gl(GPUQueryType type)
{
  if (type == GPU_QUERY_OCCLUSION) {
    /* TODO(fclem): try with GL_ANY_SAMPLES_PASSED​. */
    return GL_SAMPLES_PASSED;
  }
  BLI_assert(0);
  return GL_SAMPLES_PASSED;
}
 
}  // namespace blender::gpu