capabilities_gles.h

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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#pragma once
 
#include <cstddef>
 
#include "flutter/fml/macros.h"
#include "impeller/core/shader_types.h"
#include "impeller/geometry/size.h"
 
namespace impeller {
 
class ProcTableGLES;
 
struct CapabilitiesGLES {
  CapabilitiesGLES(const ProcTableGLES& gl);
 
  // Must be at least 8.
  size_t max_combined_texture_image_units = 8;
 
  // Must be at least 16.
  size_t max_cube_map_texture_size = 16;
 
  // Must be at least 16.
  size_t max_fragment_uniform_vectors = 16;
 
  // Must be at least 1.
  size_t max_renderbuffer_size = 1;
 
  // Must be at least 8.
  size_t max_texture_image_units = 8;
 
  // Must be at least 64.
  ISize max_texture_size = ISize{64, 64};
 
  // Must be at least 8.
  size_t max_varying_vectors = 8;
 
  // Must be at least 8.
  size_t max_vertex_attribs = 8;
 
  // May be 0.
  size_t max_vertex_texture_image_units = 0;
 
  // Must be at least 128.
  size_t max_vertex_uniform_vectors = 128;
 
  // Must be at least display size.
  ISize max_viewport_dims;
 
  // May be 0.
  size_t num_compressed_texture_formats = 0;
 
  // May be 0.
  size_t num_shader_binary_formats = 0;
 
  size_t GetMaxTextureUnits(ShaderStage stage) const;
};
 
}  // namespace impeller