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Pixel grid for Zoom

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This commit is contained in:
Simon Robertshaw 2011-11-08 12:16:13 +00:00
parent 093cc6281c
commit bc2b5e7945
1 changed files with 31 additions and 18 deletions
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49
src/graphics.c
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@ -3240,27 +3240,15 @@ void render_zoom(pixel *img) //draws the zoom box
{ {
#ifdef OGLR #ifdef OGLR
int origBlendSrc, origBlendDst; int origBlendSrc, origBlendDst;
float zcx1, zcx0, zcy1, zcy0, yfactor, xfactor; //X-Factor is shit, btw float zcx1, zcx0, zcy1, zcy0, yfactor, xfactor, i; //X-Factor is shit, btw
xfactor = 1.0f/(float)XRES; xfactor = 1.0f/(float)XRES;
yfactor = 1.0f/(float)YRES; yfactor = 1.0f/(float)YRES;
zcx0 = (zoom_x)*xfactor; zcx0 = (zoom_x)*xfactor;
zcx1 = (zoom_x+ZSIZE)*xfactor; zcx1 = (zoom_x+ZSIZE)*xfactor;
zcy0 = (zoom_y)*yfactor; zcy0 = (zoom_y)*yfactor;
zcy1 = ((zoom_y+ZSIZE))*yfactor; zcy1 = ((zoom_y+ZSIZE))*yfactor;
glLineWidth(sdl_scale);
glEnable(GL_LINE_SMOOTH);
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
glBegin(GL_LINE_STRIP);
glVertex3i((zoom_wx-1)*sdl_scale, (YRES+MENUSIZE-zoom_wy)*sdl_scale, 0);
glVertex3i((zoom_wx-1)*sdl_scale, (YRES+MENUSIZE-(zoom_wy+ZSIZE*ZFACTOR))*sdl_scale, 0);
glVertex3i((zoom_wx+ZSIZE*ZFACTOR)*sdl_scale, (YRES+MENUSIZE-(zoom_wy+ZSIZE*ZFACTOR))*sdl_scale, 0);
glVertex3i((zoom_wx+ZSIZE*ZFACTOR)*sdl_scale, (YRES+MENUSIZE-zoom_wy)*sdl_scale, 0);
glVertex3i((zoom_wx-1)*sdl_scale, (YRES+MENUSIZE-zoom_wy)*sdl_scale, 0);
glEnd();
glDisable(GL_LINE_SMOOTH);
glGetIntegerv(GL_BLEND_SRC, &origBlendSrc); glGetIntegerv(GL_BLEND_SRC, &origBlendSrc);
glGetIntegerv(GL_BLEND_DST, &origBlendDst); glGetIntegerv(GL_BLEND_DST, &origBlendDst);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
@ -3282,9 +3270,34 @@ void render_zoom(pixel *img) //draws the zoom box
glEnd(); glEnd();
glBindTexture(GL_TEXTURE_2D, 0); glBindTexture(GL_TEXTURE_2D, 0);
glDisable( GL_TEXTURE_2D ); glDisable( GL_TEXTURE_2D );
glBlendFunc(origBlendSrc, origBlendDst); glBlendFunc(origBlendSrc, origBlendDst);
glLineWidth(sdl_scale);
glEnable(GL_LINE_SMOOTH);
glBegin(GL_LINES);
glColor4f(0.0f, 0.0f, 0.0f, 1.0f);
for(i = 0; i < ZSIZE; i++)
{
glVertex2f((zoom_wx+ZSIZE*ZFACTOR)*sdl_scale, (YRES+MENUSIZE-(zoom_wy+ZSIZE*ZFACTOR)+i*ZFACTOR)*sdl_scale);
glVertex2f(zoom_wx*sdl_scale, (YRES+MENUSIZE-(zoom_wy+ZSIZE*ZFACTOR)+i*ZFACTOR)*sdl_scale);
glVertex2f((zoom_wx+i*ZFACTOR)*sdl_scale, (YRES+MENUSIZE-(zoom_wy+ZSIZE*ZFACTOR))*sdl_scale);
glVertex2f((zoom_wx+i*ZFACTOR)*sdl_scale, (YRES+MENUSIZE-zoom_wy)*sdl_scale);
}
glEnd();
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
glBegin(GL_LINE_STRIP);
glVertex3i((zoom_wx-1)*sdl_scale, (YRES+MENUSIZE-zoom_wy)*sdl_scale, 0);
glVertex3i((zoom_wx-1)*sdl_scale, (YRES+MENUSIZE-(zoom_wy+ZSIZE*ZFACTOR))*sdl_scale, 0);
glVertex3i((zoom_wx+ZSIZE*ZFACTOR)*sdl_scale, (YRES+MENUSIZE-(zoom_wy+ZSIZE*ZFACTOR))*sdl_scale, 0);
glVertex3i((zoom_wx+ZSIZE*ZFACTOR)*sdl_scale, (YRES+MENUSIZE-zoom_wy)*sdl_scale, 0);
glVertex3i((zoom_wx-1)*sdl_scale, (YRES+MENUSIZE-zoom_wy)*sdl_scale, 0);
glEnd();
glDisable(GL_LINE_SMOOTH);
glDisable(GL_LINE_SMOOTH);
if(zoom_en) if(zoom_en)
{ {
glEnable(GL_COLOR_LOGIC_OP); glEnable(GL_COLOR_LOGIC_OP);
@ -3299,8 +3312,8 @@ void render_zoom(pixel *img) //draws the zoom box
glVertex3i((zoom_x-1)*sdl_scale, (YRES+MENUSIZE-(zoom_y-1))*sdl_scale, 0); glVertex3i((zoom_x-1)*sdl_scale, (YRES+MENUSIZE-(zoom_y-1))*sdl_scale, 0);
glEnd(); glEnd();
glDisable(GL_COLOR_LOGIC_OP); glDisable(GL_COLOR_LOGIC_OP);
} }
glLineWidth(1); glLineWidth(1);
#else #else
int x, y, i, j; int x, y, i, j;
pixel pix; pixel pix;