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GBA Video: Mode 2 tweaks

This commit is contained in:
Vicki Pfau 2019-05-18 13:53:13 -07:00
parent 91cd47ee0e
commit 3abee66ae6
1 changed files with 27 additions and 24 deletions
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51
src/gba/renderers/gl.c
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@ -221,7 +221,7 @@ static const char* const _renderMode2 =
" float lin = 0.5 - y / range.y * 0.25;\n"
" vec2 mixedTransform = interpolate(transform, lin);\n"
" vec2 mixedOffset = interpolate(offset, lin);\n"
" color = fetchTile(ivec2(mixedTransform * texCoord.x + mixedOffset));\n"
" color = fetchTile(ivec2(mixedTransform * (texCoord.x - 1) + mixedOffset));\n"
" flags = inflags / flagCoeff;\n"
"}";
@ -1202,29 +1202,32 @@ void GBAVideoGLRendererDrawBackgroundMode0(struct GBAVideoGLRenderer* renderer,
}
void GBAVideoGLRendererDrawBackgroundMode2(struct GBAVideoGLRenderer* renderer, struct GBAVideoGLBackground* background, int y) {
int reverse;
int forward;
switch (y - renderer->firstAffine) {
case 0:
case 1:
case 2:
case 3:
return;
case 4:
forward = 2;
reverse = 4;
break;
case 5:
forward = 2;
reverse = 3;
break;
case 6:
forward = 2;
reverse = 2;
break;
default:
forward = 1;
reverse = 1;
int reverse = 0;
int forward = 1;
if (renderer->scale > 1) {
switch (y - renderer->firstAffine) {
case 0:
case 1:
case 2:
case 3:
return;
case 4:
forward = 2;
reverse = 4;
break;
case 5:
forward = 2;
reverse = 3;
break;
case 6:
forward = 2;
reverse = 2;
break;
case 7:
forward = 2;
reverse = 1;
break;
}
}
const struct GBAVideoGLShader* shader = &renderer->bgShader[background->overflow ? 2 : 3];