blob: 356ebf5bfa8c099df75c33ebd88ecb6b15795f82 [file] [log] [blame]
// Copyright 2017 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef COBALT_RENDERER_RASTERIZER_EGL_DRAW_POLY_COLOR_H_
#define COBALT_RENDERER_RASTERIZER_EGL_DRAW_POLY_COLOR_H_
#include <vector>
#include "base/optional.h"
#include "cobalt/math/rect_f.h"
#include "cobalt/render_tree/color_rgba.h"
#include "cobalt/renderer/rasterizer/egl/draw_object.h"
namespace cobalt {
namespace renderer {
namespace rasterizer {
namespace egl {
// Handles drawing various colored polygons.
class DrawPolyColor : public DrawObject {
public:
DrawPolyColor(GraphicsState* graphics_state,
const BaseState& base_state,
const math::RectF& rect,
const render_tree::ColorRGBA& color);
bool TryMerge(DrawObject* other) OVERRIDE;
void ExecuteUpdateVertexBuffer(GraphicsState* graphics_state,
ShaderProgramManager* program_manager) OVERRIDE;
void ExecuteRasterize(GraphicsState* graphics_state,
ShaderProgramManager* program_manager) OVERRIDE;
base::TypeId GetTypeId() const OVERRIDE;
protected:
explicit DrawPolyColor(const BaseState& base_state);
void SetupShader(GraphicsState* graphics_state,
ShaderProgramManager* program_manager);
void AddRectVertices(const math::RectF& rect, uint32_t color);
void AddRectIndices(uint16_t top_left, uint16_t top_right,
uint16_t bottom_left, uint16_t bottom_right);
bool PrepareForMerge();
struct VertexAttributes {
VertexAttributes(float x, float y, uint32_t color32) {
position[0] = x;
position[1] = y;
color = color32;
}
float position[2];
uint32_t color;
};
std::vector<VertexAttributes> attributes_;
std::vector<uint16_t> indices_;
uint16_t* index_buffer_;
uint8_t* vertex_buffer_;
base::optional<bool> can_merge_;
};
} // namespace egl
} // namespace rasterizer
} // namespace renderer
} // namespace cobalt
#endif // COBALT_RENDERER_RASTERIZER_EGL_DRAW_POLY_COLOR_H_