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Merge pull request #2089 from Dandandan/optimize

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Cache expression in gfx_rle_sprite_to_buffer
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Ted John
2015-10-19 22:10:14 +01:00
parent 485b8d1508 4f4f434c5a
commit acca9c869b
1 changed files with 5 additions and 3 deletions
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8
src/drawing/sprite.c
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@@ -265,9 +265,11 @@ void gfx_rle_sprite_to_buffer(uint8* source_bits_pointer, uint8* dest_bits_point
uint8* next_source_pointer; uint8* next_source_pointer;
uint8* next_dest_pointer = dest_bits_pointer; uint8* next_dest_pointer = dest_bits_pointer;
int line_width = (dpi->width >> zoom_level) + dpi->pitch;
if (source_y_start < 0){ if (source_y_start < 0){
source_y_start += zoom_amount; source_y_start += zoom_amount;
next_dest_pointer += dpi->width / zoom_amount + dpi->pitch; next_dest_pointer += line_width;
height -= zoom_amount; height -= zoom_amount;
} }
@@ -309,7 +311,7 @@ void gfx_rle_sprite_to_buffer(uint8* source_bits_pointer, uint8* dest_bits_point
if (x_start > 0){ if (x_start > 0){
//Since the start is positive //Since the start is positive
//We need to move the drawing surface to the correct position //We need to move the drawing surface to the correct position
dest_pointer += x_start / zoom_amount; dest_pointer += x_start >> zoom_level;
} }
else{ else{
//If the start is negative we require to remove part of the image. //If the start is negative we require to remove part of the image.
@@ -365,7 +367,7 @@ void gfx_rle_sprite_to_buffer(uint8* source_bits_pointer, uint8* dest_bits_point
} }
//Add a line to the drawing surface pointer //Add a line to the drawing surface pointer
next_dest_pointer += dpi->width / zoom_amount + dpi->pitch; next_dest_pointer += line_width;
} }
} }