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optimized mandelbrot example

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This commit is contained in:
Irmen de Jong 2018-09-23 02:42:42 +02:00
parent 68037e4425
commit 3a0c1c5ada
4 changed files with 23 additions and 99 deletions
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38
compiler/examples/imported.p8
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@ -1,38 +0,0 @@
%zeropage full
%address 33
%option enable_floats
%option enable_floats
~ extra {
; this is imported
X = 42
return 44
}
~ extra2 {
; this is imported
X = 42
return 44
label_in_extra2:
X = 33
return
sub sub_in_extra2() -> () {
return
}
sub another_sub_in_extra2() -> () {
return
}
}
~ main2 {
; this is imported
X = 42
return 44
}

41
compiler/examples/imported2.p8
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@ -1,41 +0,0 @@
%zeropage full
%address 33
~ extra3 {
; this is imported
X = 42
return 44
}
~ extra233 {
; this is imported
const byte snerp=33
const byte snerp2 = snerp+22
X = 42+snerp
;return 44+snerp
return
sub foo234234() -> () {
A=99+snerp
;return A+snerp2
return
}
sub thingy()->(X) {
;return 99
return
}
}
~ mainzzz {
; this is imported
X = 42
;return 44
return
}

41
compiler/examples/mandelbrot.p8
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@ -4,48 +4,49 @@
sub start() -> () {
const word width = 320
const word height = 256
const word width = 320 // 2
const word height = 256 // 2
const word xoffset = 40
const word yoffset = 20
word pixelx
byte pixely
float xx
float yy
float x
float y
float x2
float xsq
float ysq
byte iter
word plotx
byte ploty
_vm_write_str("Calculating Mandelbrot fractal, have patience...\n")
_vm_gfx_clearscr(11)
_vm_gfx_text(5, 5, 7, "Calculating Mandelbrot Fractal...")
for pixely in 0 to height-1 {
for pixelx in 0 to width-1 {
xx = pixelx/width/3+0.2
yy = pixely/height/3.6+0.4
for pixely in yoffset to yoffset+height-1 {
yy = (pixely-yoffset)/height/3.6+0.4
for pixelx in xoffset to xoffset+width-1 {
xx = (pixelx-xoffset)/width/3+0.2
x = 0.0
y = 0.0
for iter in 0 to 31 {
if (x*x + y*y > 4) break
x2 = x*x - y*y + xx
xsq = 0
ysq = 0
iter = 0
while (iter<32 and xsq+ysq<4) {
y = x*y*2 + yy
x = x2
x = xsq - ysq + xx
xsq = x*x
ysq = y*y
iter++
}
_vm_gfx_pixel(pixelx, pixely, iter)
; plotx = pixelx*2
; ploty = pixely*2
; _vm_gfx_pixel(plotx, ploty, iter)
; _vm_gfx_pixel(plotx+1, ploty, iter)
; _vm_gfx_pixel(plotx, ploty+1, iter)
; _vm_gfx_pixel(plotx+1, ploty+1, iter)
}
}
_vm_gfx_text(5, 5, 7, "Mandelbrot Fractal")
_vm_gfx_text(110, 160, 7, "Finished!")
}
}

2
compiler/src/prog8/compiler/Compiler.kt
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@ -794,6 +794,7 @@ private class StatementTranslator(private val stackvmProg: StackVmProgram, priva
val loopLabel = makeLabel("loop")
val breakLabel = makeLabel("break")
val continueLabel = makeLabel("continue")
stackvmProg.line(stmt.position)
breakStmtLabelStack.push(breakLabel)
continueStmtLabelStack.push(continueLabel)
stackvmProg.instr(Opcode.JUMP, callLabel = continueLabel)
@ -827,6 +828,7 @@ private class StatementTranslator(private val stackvmProg: StackVmProgram, priva
val loopLabel = makeLabel("loop")
val continueLabel = makeLabel("continue")
val breakLabel = makeLabel("break")
stackvmProg.line(stmt.position)
breakStmtLabelStack.push(breakLabel)
continueStmtLabelStack.push(continueLabel)
stackvmProg.label(loopLabel)