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boxing and maintain aspect ratio now also working with opengl

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This commit is contained in:
FunkyFr3sh 2018-03-14 15:12:56 +01:00
parent ecaaf8e647
commit 65525e14dd
3 changed files with 47 additions and 7 deletions
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42
src/render.c
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@ -117,8 +117,48 @@ DWORD WINAPI render_main(void)
glGenTextures(1, &textureId);
glBindTexture(GL_TEXTURE_2D, textureId);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, tex_width, tex_height, 0, PIXEL_FORMAT, GL_UNSIGNED_BYTE, tex);
glViewport(0, 0, ddraw->render.width, ddraw->render.height);
DWORD dst_top = 0;
DWORD dst_left = 0;
DWORD dst_width = ddraw->render.width;
DWORD dst_height = ddraw->render.height;
if (ddraw->maintas)
{
dst_width = ddraw->render.width;
dst_height = ((float)ddraw->height / ddraw->width) * dst_width;
if (dst_height > ddraw->render.height)
{
dst_width = ((float)dst_width / dst_height) * ddraw->render.height;
dst_height = ddraw->render.height;
}
dst_top = ddraw->render.height / 2 - dst_height / 2;
dst_left = ddraw->render.width / 2 - dst_width / 2;
}
else if (ddraw->boxing)
{
dst_width = ddraw->width;
dst_height = ddraw->height;
int i;
for (i = 20; i-- > 1;)
{
if (ddraw->width * i <= ddraw->render.width && ddraw->height * i <= ddraw->render.height)
{
dst_width *= i;
dst_height *= i;
break;
}
}
dst_top = ddraw->render.height / 2 - dst_height / 2;
dst_left = ddraw->render.width / 2 - dst_width / 2;
}
glViewport(dst_left, dst_top, dst_width, dst_height);
if(ddraw->render.filter)
{
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);