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Decompile zoom level 2

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This commit is contained in:
Marijn van der Werf
2016-02-26 11:47:08 +01:00
parent 0519130b94
commit 68229904e1
1 changed files with 202 additions and 13 deletions
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215
src/interface/viewport.c
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@@ -2232,7 +2232,7 @@ struct paint_string_struct {
uint8 *y_offsets; // 0x1A
};
void loc_6791B8_6795E4(rct_g1_element *image, uint8 *esi, uint8 **new_source_pointer_start, uint8 **esi_end);
void loc_6791B8_6795E4_679A8F(rct_g1_element *image, uint8 *esi, uint8 **new_source_pointer_start, uint8 **esi_end);
static void draw_pixel_info_crop_by_zoom(rct_drawpixelinfo *dpi)
{
@@ -2713,6 +2713,9 @@ void sub_679074(rct_drawpixelinfo *dpi, int imageId, sint16 x, sint16 y)
{
rct_g1_element *image = &g1Elements[imageId & 0x7FFFF];
uint8 *esi;
uint8 *new_source_pointer_start, *esi_end;
switch (dpi->zoom_level) {
case 0:
RCT2_GLOBAL(0x9E3D08, uint8*) = image->offset;
@@ -2799,8 +2802,7 @@ void sub_679074(rct_drawpixelinfo *dpi, int imageId, sint16 x, sint16 y)
}
}
sint8 ax = image->width;
_xEndPoint = ax;
_xEndPoint = image->width;
RCT2_GLOBAL(0x009ABDAE, sint16) = 0;
x += image->x_offset;
x -= dpi->x;
@@ -2837,12 +2839,10 @@ void sub_679074(rct_drawpixelinfo *dpi, int imageId, sint16 x, sint16 y)
}
uint8 *new_source_pointer_start, *esi_end;
loc_6791B8_6795E4(image, esi, &new_source_pointer_start, &esi_end);
loc_6791B8_6795E4_679A8F(image, esi, &new_source_pointer_start, &esi_end);
do_sub(0x00679236, RCT2_GLOBAL(0x00EDF81C, uint32), image, esi_end);
free(new_source_pointer_start);
break;
return;
case 1:
if (image->flags & 0x20) {
@@ -2952,7 +2952,7 @@ void sub_679074(rct_drawpixelinfo *dpi, int imageId, sint16 x, sint16 y)
// push edi
// ebp = edi;
//esi = image->offset;
uint8 *esi = image->offset;
esi = image->offset;
y += image->y_offset;
sint16 height = image->height;
if (height % 2) {
@@ -3032,16 +3032,205 @@ void sub_679074(rct_drawpixelinfo *dpi, int imageId, sint16 x, sint16 y)
return;
}
uint8 *new_source_pointer_start, *esi_end;
loc_6791B8_6795E4(image, esi, &new_source_pointer_start, &esi_end);
loc_6791B8_6795E4_679A8F(image, esi, &new_source_pointer_start, &esi_end);
do_sub(0x00679662, RCT2_GLOBAL(0x00EDF81C, uint32), image, esi_end);
free(new_source_pointer_start);
}
break;
case 2:
// TODO: loc_6798F5
break;
if (image->flags & 0x20) {
return;
}
if (image->flags & 0x10) {
// TODO: SAR in dpi done with `>> 1`, in coordinates with `/ 2`
rct_drawpixelinfo zoomed_dpi = {
.bits = dpi->bits,
.x = dpi->x >> 1,
.y = dpi->y >> 1,
.height = dpi->height,
.width = dpi->width,
.pitch = dpi->pitch,
.zoom_level = dpi->zoom_level - 1
};
sub_679074(&zoomed_dpi, imageId - image->zoomed_offset, x / 2, y / 2);
return;
}
RCT2_GLOBAL(0x9E3D08, uint8*) = image->offset;
RCT2_GLOBAL(0x9E3D0C, sint16) = image->width;
RCT2_GLOBAL(0x9E3D0C + 2, sint16) = image->height;
RCT2_GLOBAL(0x9E3D10, sint16) = image->x_offset;
RCT2_GLOBAL(0x9E3D10 + 2, sint16) = image->y_offset;
RCT2_GLOBAL(0x9E3D14, uint16) = image->flags;
RCT2_GLOBAL(0x9E3D14 + 2, uint16) = image->zoomed_offset;
if (image->flags & 4) {
y -= 3;
// ebp = dpi;
esi = image->offset;
y += image->y_offset;
sint16 height = image->height;
_yStartPoint = 0;
if (height % 2) {
height--;
if (height == 0) {
return;
}
_yStartPoint++;
}
if (height % 4) {
height -= 2;
if (height <= 0) {
return;
}
_yStartPoint += 2;
}
y = floor2(y, 4);
_yEndPoint = height;
y -= dpi->y;
if (y < 0) {
_yEndPoint += y;
if (_yEndPoint <= 0) {
return;
}
_yStartPoint -= y;
y = 0;
}
y += _yEndPoint;
y--;
if (y > 0) {
_yEndPoint -= y;
if (_yEndPoint <= 0) {
return;
}
}
_xStartPoint = 0;
_xEndPoint = image->width;
y += image->x_offset;
x = floor2(x, 4);
x -= dpi->x;
if (x < 0) {
_xEndPoint += x;
if (_xEndPoint <= 0) {
return;
}
_xStartPoint -= x;
x = 0;
}
x += _xEndPoint;
x--;
if (x > 0) {
_xEndPoint -= x;
if (_xEndPoint <= 0) {
return;
}
}
// TODO: refactor in sub_679C4A
// EDI: dpi
// EBP: dpi
RCT2_CALLPROC_X(0x00679C4A, 0, 0, 0, 0, (int) esi, 0xEEEEEEEE, 0xFFFFFFFF);
return;
}
esi = image->offset;
y += image->y_offset;
sint16 height = image->height;
if (height % 2) {
// ebx = (image->width << 16)+ image->height
height--;
esi += (image->width << 16) & image->height;
}
if (height % 4) {
height -= 2;
esi += ((image->width << 16) & image->height) << 1;
}
if (height == 0) {
return;
}
y = floor2(y, 4);
_yEndPoint = y;
y -= dpi->y;
if (y < 0) {
_yEndPoint += y;
if (_yEndPoint <= 0) {
return;
}
esi += (image->width * -y) & 0xFFFF;
y = 0;
} else {
// Nothing?
}
y += _yEndPoint;
y--;
if (y > 0) {
_yEndPoint -= y;
if (_yEndPoint <= 0) {
return;
}
}
_xEndPoint = image->width;
RCT2_GLOBAL(0x009ABDAE, sint16) = 0;
x += image->x_offset;
x = floor2(x, 4);
x -= dpi->x;
if (x < 0) {
_xEndPoint += x;
if (_xEndPoint <= 0) {
return;
}
RCT2_GLOBAL(0x009ABDAE, sint16) -= x;
esi -= x;
x = 0;
}
x += _xEndPoint;
x--;
if (x > 0) {
_xEndPoint -= x;
if (_xEndPoint <= 0) {
return;
}
RCT2_GLOBAL(0x009ABDAE, sint16) += x;
}
if (!(image->flags & 2)) {
sint8 ah = (_yEndPoint >> 8) & 0xFF;
int edx = RCT2_GLOBAL(0x009ABDAE, sint16);
uint32 ebx = RCT2_GLOBAL(0x00EDF81C, uint32);
// ah and edx don't seem to be used by this function...
do_sub(0x00679B0D, ebx, image, esi);
return;
}
loc_6791B8_6795E4_679A8F(image, esi, &new_source_pointer_start, &esi_end);
do_sub(0x00679B0D, RCT2_GLOBAL(0x00EDF81C, uint32), image, esi_end);
free(new_source_pointer_start);
return;
default:
// TODO: loc_679DEE
@@ -3051,7 +3240,7 @@ void sub_679074(rct_drawpixelinfo *dpi, int imageId, sint16 x, sint16 y)
RCT2_CALLPROC_X(0x00679074, 0, imageId, x, y, 0, (int) dpi, 0);
}
void loc_6791B8_6795E4(rct_g1_element *g1_source, uint8 *esi, uint8 **new_source_pointer_start, uint8 **esi_end) {
void loc_6791B8_6795E4_679A8F(rct_g1_element *g1_source, uint8 *esi, uint8 **new_source_pointer_start, uint8 **esi_end) {
uint8 *ebp = esi;
uint8 *source_pointer;