#
# This value is applied to both X and Y, so it has an exponential effect on
# the number of pixels.
- var dynamic_resolution_ratio = 1.0
+ var dynamic_resolution_ratio = 1.0 is writable
# Minimum dynamic screen resolution
var min_dynamic_resolution_ratio = 0.0125 is writable
private var perf_clock_dynamic_resolution = new Clock is lazy
- redef fun on_create
+ redef fun create_scene
do
super
assert error == null else print_error error
end
+ redef fun on_resize(display)
+ do
+ dynamic_context.resize(display, max_dynamic_resolution_ratio)
+ super
+ end
+
# Prepare to draw to the dynamic screen if `dynamic_resolution_ratio != 1.0`
protected fun frame_core_dynamic_resolution_before(display: GamnitDisplay)
do
# Draw directly to the screen framebuffer
glBindFramebuffer(gl_FRAMEBUFFER, dynamic_context.screen_framebuffer)
glViewport(0, 0, display.width, display.height)
+ glClear gl_COLOR_BUFFER_BIT | gl_DEPTH_BUFFER_BIT
var gl_error = glGetError
assert gl_error == gl_NO_ERROR else print_error gl_error
# Draw to our dynamic framebuffer
glBindFramebuffer(gl_FRAMEBUFFER, dynamic_context.dynamic_framebuffer)
- glClear gl_COLOR_BUFFER_BIT | gl_DEPTH_BUFFER_BIT
var ratio = dynamic_resolution_ratio
ratio = ratio.clamp(min_dynamic_resolution_ratio, max_dynamic_resolution_ratio)
glViewport(0, 0, (display.width.to_f*ratio).to_i,
(display.height.to_f*ratio).to_i)
+ glClear gl_COLOR_BUFFER_BIT | gl_DEPTH_BUFFER_BIT
+
var gl_error = glGetError
assert gl_error == gl_NO_ERROR else print_error gl_error
end
# Draw
glDrawArrays(gl_TRIANGLE_STRIP, 0, 4)
+ gl_error = glGetError
+ assert gl_error == gl_NO_ERROR else print_error gl_error
+ # Take down
+ glBindBuffer(gl_ARRAY_BUFFER, 0)
gl_error = glGetError
assert gl_error == gl_NO_ERROR else print_error gl_error
end
end
-# Program drawing the dynamic screen to the real screen
+# Handles to reused GL buffers and texture
private class DynamicContext
# Real screen framebuffer
# Buffer name for vertex data
var buffer_array: Int = -1
- var float_per_vertex: Int is lazy do return 4 + 4 + 3
-
# Prepare all attributes once per resolution change
fun prepare_once(display: GamnitDisplay, max_dynamic_resolution_ratio: Float)
do
# TODO enable antialiasing.
- var width = (display.width.to_f * max_dynamic_resolution_ratio).to_i
- var height = (display.height.to_f * max_dynamic_resolution_ratio).to_i
-
# Set aside the real screen framebuffer name
var screen_framebuffer = glGetIntegerv(gl_FRAMEBUFFER_BINDING, 0)
self.screen_framebuffer = screen_framebuffer
glBindFramebuffer(gl_FRAMEBUFFER, framebuffer)
assert glIsFramebuffer(framebuffer)
self.dynamic_framebuffer = framebuffer
+ var gl_error = glGetError
+ assert gl_error == gl_NO_ERROR else print_error gl_error
- # Depth
+ # Depth & texture/color
var depthbuffer = glGenRenderbuffers(1).first
- glBindRenderbuffer(gl_RENDERBUFFER, depthbuffer)
- assert glIsRenderbuffer(depthbuffer)
- glRenderbufferStorage(gl_RENDERBUFFER, gl_DEPTH_COMPNENT16, width, height)
- glFramebufferRenderbuffer(gl_FRAMEBUFFER, gl_DEPTH_ATTACHMENT, gl_RENDERBUFFER, depthbuffer)
self.depth_renderbuffer = depthbuffer
-
- # Texture
var texture = glGenTextures(1).first
- glBindTexture(gl_TEXTURE_2D, texture)
- glTexParameteri(gl_TEXTURE_2D, gl_TEXTURE_MIN_FILTER, gl_LINEAR)
- glTexParameteri(gl_TEXTURE_2D, gl_TEXTURE_MAG_FILTER, gl_LINEAR)
- glTexParameteri(gl_TEXTURE_2D, gl_TEXTURE_WRAP_S, gl_CLAMP_TO_EDGE)
- glTexParameteri(gl_TEXTURE_2D, gl_TEXTURE_WRAP_T, gl_CLAMP_TO_EDGE)
- glTexImage2D(gl_TEXTURE_2D, 0, gl_RGB, width, height,
- 0, gl_RGB, gl_UNSIGNED_BYTE, new Pointer.nul)
- glFramebufferTexture2D(gl_FRAMEBUFFER, gl_COLOR_ATTACHMENT0, gl_TEXTURE_2D, texture, 0)
self.texture = texture
-
- var gl_error = glGetError
+ gl_error = glGetError
assert gl_error == gl_NO_ERROR else print_error gl_error
- assert glCheckFramebufferStatus(gl_FRAMEBUFFER) == gl_FRAMEBUFFER_COMPLETE
- # Take down
- glBindRenderbuffer(gl_RENDERBUFFER, 0)
- glBindFramebuffer(gl_FRAMEBUFFER, 0)
+ resize(display, max_dynamic_resolution_ratio)
+ assert glCheckFramebufferStatus(gl_FRAMEBUFFER) == gl_FRAMEBUFFER_COMPLETE
# Array buffer
buffer_array = glGenBuffers(1).first
assert gl_error == gl_NO_ERROR else print_error gl_error
end
+ # Init size or resize `depth_renderbuffer` and `texture`
+ fun resize(display: GamnitDisplay, max_dynamic_resolution_ratio: Float)
+ do
+ var width = (display.width.to_f * max_dynamic_resolution_ratio).to_i
+ var height = (display.height.to_f * max_dynamic_resolution_ratio).to_i
+
+ glBindFramebuffer(gl_FRAMEBUFFER, dynamic_framebuffer)
+
+ var depthbuffer = self.depth_renderbuffer
+ var texture = self.texture
+
+ # Depth
+ glBindRenderbuffer(gl_RENDERBUFFER, depthbuffer)
+ assert glIsRenderbuffer(depthbuffer)
+ glRenderbufferStorage(gl_RENDERBUFFER, gl_DEPTH_COMPONENT16, width, height)
+ glFramebufferRenderbuffer(gl_FRAMEBUFFER, gl_DEPTH_ATTACHMENT, gl_RENDERBUFFER, depthbuffer)
+ var gl_error = glGetError
+ assert gl_error == gl_NO_ERROR else print_error gl_error
+
+ # Texture
+ glBindTexture(gl_TEXTURE_2D, texture)
+ glTexParameteri(gl_TEXTURE_2D, gl_TEXTURE_MIN_FILTER, gl_LINEAR)
+ glTexParameteri(gl_TEXTURE_2D, gl_TEXTURE_MAG_FILTER, gl_LINEAR)
+ glTexParameteri(gl_TEXTURE_2D, gl_TEXTURE_WRAP_S, gl_CLAMP_TO_EDGE)
+ glTexParameteri(gl_TEXTURE_2D, gl_TEXTURE_WRAP_T, gl_CLAMP_TO_EDGE)
+ glTexImage2D(gl_TEXTURE_2D, 0, gl_RGB, width, height,
+ 0, gl_RGB, gl_UNSIGNED_BYTE, new Pointer.nul)
+ glFramebufferTexture2D(gl_FRAMEBUFFER, gl_COLOR_ATTACHMENT0, gl_TEXTURE_2D, texture, 0)
+
+ gl_error = glGetError
+ assert gl_error == gl_NO_ERROR else print_error gl_error
+
+ # Take down
+ glBindRenderbuffer(gl_RENDERBUFFER, 0)
+ glBindFramebuffer(gl_FRAMEBUFFER, 0)
+
+ gl_error = glGetError
+ assert gl_error == gl_NO_ERROR else print_error gl_error
+ end
+
var destroyed = false
fun destroy
do
nitlanguage / nit.git / blobdiff