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demo use windy + boxy

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Ryan Oldenburg 2022-01-02 18:13:25 -06:00
parent 2d3d4c5f95
commit aae5c07614
1 changed files with 17 additions and 67 deletions
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src/pixie/demo.nim
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@ -1,91 +1,41 @@
import opengl, pixie, pixie/contexts import boxy, opengl, pixie, windy
export pixie export pixie, windy
import staticglfw except Image
export staticglfw except Image
var var
dpi: float32 = 1.0 window*: Window
screen*: Image screen*: Image
ctx*: Context ctx*: Context
window*: Window bxy: Boxy
proc getMousePos*(): Vec2 =
## Get the mouse position.
var xpos, ypos: float64
getCursorPos(window, xpos.addr, ypos.addr)
vec2(xpos, ypos) / dpi
proc isMouseDown*(): bool =
## Get if the left mouse button is down.
getMouseButton(window, MOUSE_BUTTON_LEFT) == PRESS
proc isKeyDown*(keyCode: int): bool =
## Get if the key is currently being held down.
## See key codes: https://www.glfw.org/docs/3.3/group__keys.html
## Examples: KEY_SPACE, KEY_UP, KEY_DOWN, KEY_LEFT, KEY_RIGHT
getKey(window, keyCode.cint) == PRESS
proc tick*() = proc tick*() =
## Called this every frame in a while loop. ## Called this every frame in a while loop.
# Update texture with new pixels from surface. bxy.addImage("screen", ctx.image, genMipmaps = false)
var dataPtr = screen.data[0].addr
glTexSubImage2D(
GL_TEXTURE_2D, 0, 0, 0,
screen.width.GLsizei, screen.height.GLsizei,
GL_RGBA, GL_UNSIGNED_BYTE, dataPtr
)
# Draw a quad over the whole screen. bxy.beginFrame(window.framebufferSize)
glClear(GL_COLOR_BUFFER_BIT) bxy.drawRect(rect(vec2(0, 0), window.framebufferSize.vec2), color(1, 1, 1, 1))
glBegin(GL_QUADS) bxy.drawImage("screen", vec2(0, 0))
glTexCoord2d(0.0, 0.0); glVertex2d(-1.0, +1.0) bxy.endFrame()
glTexCoord2d(1.0, 0.0); glVertex2d(+1.0, +1.0)
glTexCoord2d(1.0, 1.0); glVertex2d(+1.0, -1.0)
glTexCoord2d(0.0, 1.0); glVertex2d(-1.0, -1.0)
glEnd()
swapBuffers(window) swapBuffers(window)
pollEvents() pollEvents()
if windowShouldClose(window) == 1: if window.closeRequested:
quit() quit()
ctx.setTransform(scale(vec2(dpi, dpi))) ctx.setTransform(scale(vec2(window.contentScale, window.contentScale)))
proc start*(title = "Demo", width = 800, height = 600) = proc start*(title = "Demo", windowSize = ivec2(800, 600)) =
## Start the demo. ## Start the demo.
if init() == 0: window = newWindow(title, windowSize)
quit("Failed to Initialize GLFW.") window.style = Decorated
windowHint(RESIZABLE, false.cint)
window = createWindow(width.cint, height.cint, title, nil, nil)
if window == nil:
quit("Failed to create window.")
makeContextCurrent(window) makeContextCurrent(window)
loadExtensions() loadExtensions()
var xscale, yscale: cfloat let pixelSize = windowSize.vec2 * window.contentScale
window.getWindowContentScale(xscale.addr, yscale.addr) screen = newImage(pixelSize.x.int, pixelSize.y.int)
dpi = xscale
screen = newImage(int(width.float32 * dpi), int(height.float32 * dpi))
window.setWindowSize(screen.width.cint, screen.height.cint)
glViewport(0, 0, screen.width.cint, screen.height.cint)
ctx = newContext(screen) ctx = newContext(screen)
bxy = newBoxy()
# Allocate a texture and bind it.
var dataPtr = screen.data[0].addr
glTexImage2D(
GL_TEXTURE_2D, 0, 3,
screen.width.GLsizei, screen.height.GLsizei,
0, GL_RGBA, GL_UNSIGNED_BYTE, dataPtr
)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP)
glEnable(GL_TEXTURE_2D)