mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-10 13:07:26 +01:00
89 lines
2.3 KiB
Go
89 lines
2.3 KiB
Go
// Copyright 2018 The Ebiten Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package opengl
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import (
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"github.com/hajimehoshi/ebiten/internal/affine"
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"github.com/hajimehoshi/ebiten/internal/graphics"
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"github.com/hajimehoshi/ebiten/internal/graphicsdriver"
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"github.com/hajimehoshi/ebiten/internal/math"
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)
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var theDriver Driver
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func GetDriver() *Driver {
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return &theDriver
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}
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type Driver struct {
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state openGLState
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}
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func (d *Driver) NewImage(width, height int) (graphicsdriver.Image, error) {
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i := &Image{
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driver: d,
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width: width,
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height: height,
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}
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w := math.NextPowerOf2Int(width)
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h := math.NextPowerOf2Int(height)
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checkSize(w, h)
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t, err := theContext.newTexture(w, h)
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if err != nil {
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return nil, err
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}
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i.textureNative = t
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return i, nil
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}
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func (d *Driver) NewScreenFramebufferImage(width, height int) graphicsdriver.Image {
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checkSize(width, height)
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i := &Image{
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driver: d,
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width: width,
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height: height,
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}
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// The (default) framebuffer size can't be converted to a power of 2.
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// On browsers, c.width and c.height are used as viewport size and
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// Edge can't treat a bigger viewport than the drawing area (#71).
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i.framebuffer = newScreenFramebuffer(width, height)
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return i
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}
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// Reset resets or initializes the current OpenGL state.
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func (d *Driver) Reset() error {
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return d.state.reset()
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}
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func (d *Driver) BufferSubData(vertices []float32, indices []uint16) {
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bufferSubData(vertices, indices)
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}
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func (d *Driver) UseProgram(mode graphics.CompositeMode, colorM *affine.ColorM, filter graphics.Filter) error {
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return d.state.useProgram(mode, colorM, filter)
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}
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func (d *Driver) DrawElements(len int, offsetInBytes int) {
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theContext.drawElements(len, offsetInBytes)
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}
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func (d *Driver) Flush() {
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theContext.flush()
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}
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func (d *Driver) MaxImageSize() int {
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return theContext.getMaxTextureSize()
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}
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