mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-10 13:07:26 +01:00
93 lines
2.6 KiB
Go
93 lines
2.6 KiB
Go
// Copyright 2018 The Ebiten Authors
|
|
//
|
|
// 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.
|
|
|
|
package opengl
|
|
|
|
import (
|
|
"github.com/hajimehoshi/ebiten/internal/affine"
|
|
"github.com/hajimehoshi/ebiten/internal/graphics"
|
|
"github.com/hajimehoshi/ebiten/internal/graphicsdriver"
|
|
"github.com/hajimehoshi/ebiten/internal/math"
|
|
)
|
|
|
|
var theDriver Driver
|
|
|
|
func GetDriver() *Driver {
|
|
return &theDriver
|
|
}
|
|
|
|
type Driver struct {
|
|
state openGLState
|
|
}
|
|
|
|
func (d *Driver) NewImage(width, height int) (graphicsdriver.Image, error) {
|
|
i := &Image{
|
|
driver: d,
|
|
width: width,
|
|
height: height,
|
|
}
|
|
w := math.NextPowerOf2Int(width)
|
|
h := math.NextPowerOf2Int(height)
|
|
checkSize(w, h)
|
|
t, err := theContext.newTexture(w, h)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
i.textureNative = t
|
|
return i, nil
|
|
}
|
|
|
|
func (d *Driver) NewScreenFramebufferImage(width, height int) graphicsdriver.Image {
|
|
checkSize(width, height)
|
|
i := &Image{
|
|
driver: d,
|
|
width: width,
|
|
height: height,
|
|
}
|
|
// The (default) framebuffer size can't be converted to a power of 2.
|
|
// On browsers, c.width and c.height are used as viewport size and
|
|
// Edge can't treat a bigger viewport than the drawing area (#71).
|
|
i.framebuffer = newScreenFramebuffer(width, height)
|
|
return i
|
|
}
|
|
|
|
// Reset resets or initializes the current OpenGL state.
|
|
func (d *Driver) Reset() error {
|
|
return d.state.reset()
|
|
}
|
|
|
|
func (d *Driver) BufferSubData(vertices []float32, indices []uint16) {
|
|
bufferSubData(vertices, indices)
|
|
}
|
|
|
|
func (d *Driver) UseProgram(mode graphics.CompositeMode, colorM *affine.ColorM, filter graphics.Filter) error {
|
|
return d.state.useProgram(mode, colorM, filter)
|
|
}
|
|
|
|
func (d *Driver) DrawElements(len int, offsetInBytes int) {
|
|
theContext.drawElements(len, offsetInBytes)
|
|
// glFlush() might be necessary at least on MacBook Pro (a smilar problem at #419),
|
|
// but basically this pass the tests (esp. TestImageTooManyFill).
|
|
// As glFlush() causes performance problems, this should be avoided as much as possible.
|
|
// Let's wait and see, and file a new issue when this problem is newly found.
|
|
}
|
|
|
|
func (d *Driver) Flush() {
|
|
theContext.flush()
|
|
}
|
|
|
|
func (d *Driver) MaxImageSize() int {
|
|
return theContext.getMaxTextureSize()
|
|
}
|