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offscreen drawing

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This commit is contained in:
J-D-K 2019-04-17 16:30:33 -04:00
parent bc0a99cab9
commit 512889a1a5
3 changed files with 62 additions and 4 deletions
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2
Makefile
View File

@ -38,7 +38,7 @@ INCLUDES := inc
EXEFS_SRC := exefs_src
APP_TITLE := JKSV
APP_AUTHOR := JK
APP_VERSION := 01/08/2019
APP_VERSION := 04.17.2019
ROMFS := romfs
#---------------------------------------------------------------------------------

62
src/gfx.c
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@ -40,6 +40,16 @@ static inline uint32_t smooth(const clr px1, const clr px2)
return (fA << 24 | fB << 16 | fG << 8 | fR);
}
static inline bool yCheck(const tex *target, int y)
{
return y < 0 || y >= target->height;
}
static inline bool xCheck(const tex *target, int x)
{
return x < 0 || x >= target->width;
}
bool graphicsInit(int windowWidth, int windowHeight)
{
window = nwindowGetDefault();
@ -95,13 +105,13 @@ static void drawGlyph(const FT_Bitmap *bmp, tex *target, int _x, int _y)
uint8_t *bmpPtr = bmp->buffer;
for(int y = _y; y < _y + bmp->rows; y++)
{
if(y > target->height || y < 0)
if(yCheck(target, y))
continue;
uint32_t *rowPtr = &target->data[y * target->width + _x];
for(int x = _x; x < _x + bmp->width; x++, bmpPtr++, rowPtr++)
{
if(x > target->width || x < 0)
if(xCheck(target, x))
continue;
if(*bmpPtr > 0)
@ -303,9 +313,17 @@ void drawRect(tex *target, int x, int y, int w, int h, const clr c)
for(int tY = y; tY < y + h; tY++)
{
if(yCheck(target, tY))
continue;
uint32_t *rowPtr = &target->data[tY * target->width + x];
for(int tX = x; tX < x + w; tX++, rowPtr++)
{
if(xCheck(target, tX))
continue;
*rowPtr = clr;
}
}
}
@ -313,9 +331,17 @@ void drawRectAlpha(tex *target, int x, int y, int w, int h, const clr c)
{
for(int tY = y; tY < y + h; tY++)
{
if(yCheck(target, tY))
continue;
uint32_t *rowPtr = &target->data[tY * target->width + x];
for(int tX = x; tX < x + w; tX++, rowPtr++)
{
if(xCheck(target, tX))
continue;
*rowPtr = blend(c, clrCreateU32(*rowPtr));
}
}
}
@ -513,9 +539,15 @@ void texDraw(const tex *t, tex *target, int x, int y)
uint32_t *dataPtr = &t->data[0];
for(int tY = y; tY < y + t->height; tY++)
{
if(yCheck(target, tY))
continue;
uint32_t *rowPtr = &target->data[tY * target->width + x];
for(int tX = x; tX < x + t->width; tX++, rowPtr++)
{
if(xCheck(target, tX))
continue;
clr dataClr = clrCreateU32(*dataPtr++);
clr fbClr = clrCreateU32(*rowPtr);
@ -532,9 +564,17 @@ void texDrawNoAlpha(const tex *t, tex *target, int x, int y)
uint32_t *dataPtr = &t->data[0];
for(int tY = y; tY < y + t->height; tY++)
{
if(yCheck(target, tY))
continue;
uint32_t *rowPtr = &target->data[tY * target->width + x];
for(int tX = x; tX < x + t->width; tX++)
{
if(xCheck(target, tX))
continue;
*rowPtr++ = *dataPtr++;
}
}
}
}
@ -546,9 +586,15 @@ void texDrawSkip(const tex *t, tex *target, int x, int y)
uint32_t *dataPtr = &t->data[0];
for(int tY = y; tY < y + (t->height / 2); tY++, dataPtr += t->width)
{
if(yCheck(target, tY))
continue;
uint32_t *rowPtr = &target->data[tY * target->width + x];
for(int tX = x; tX < x + (t->width / 2); tX++, rowPtr++)
{
if(xCheck(target, tX))
continue;
clr px1 = clrCreateU32(*dataPtr++);
clr px2 = clrCreateU32(*dataPtr++);
clr fbPx = clrCreateU32(*rowPtr);
@ -566,9 +612,15 @@ void texDrawSkipNoAlpha(const tex *t, tex *target, int x, int y)
uint32_t *dataPtr = &t->data[0];
for(int tY = y; tY < y + (t->height / 2); tY++, dataPtr += t->width)
{
if(yCheck(target, tY))
continue;
uint32_t *rowPtr = &target->data[tY * target->width + x];
for(int tX = x; tX < x + (t->width / 2); tX++, rowPtr++)
{
if(xCheck(target, tX))
continue;
clr px1 = clrCreateU32(*dataPtr++);
clr px2 = clrCreateU32(*dataPtr++);
@ -585,9 +637,15 @@ void texDrawInvert(const tex *t, tex *target, int x, int y)
uint32_t *dataPtr = &t->data[0];
for(int tY = y; tY < y + t->height; tY++)
{
if(yCheck(target, tY))
continue;
uint32_t *rowPtr = &target->data[tY * target->width + x];
for(int tX = x; tX < x + t->width; tX++, rowPtr++)
{
if(xCheck(target, tX))
continue;
clr dataClr = clrCreateU32(*dataPtr++);
clrInvert(&dataClr);
clr fbClr = clrCreateU32(*rowPtr);

2
src/ui.cpp
View File

@ -11,7 +11,7 @@
#include "util.h"
#include "file.h"
#define VER_STRING "v. 01/08/2019"
#define VER_STRING "v. 04.17.2019"
//background that can be drawn from "/JKSV/back.jpg"
//txtSide and fldSide are to fake alpha blending so the framerate doesn't suffer