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Fix bad waterfall texture offset 

Was offset by 1 pixel..
This commit is contained in:
Charles J. Cliffe 2015-10-27 17:35:42 -04:00
parent 7027e7bf0b
commit 8c53bde031
1 changed files with 2 additions and 2 deletions
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4
src/panel/WaterfallPanel.cpp
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@ -177,7 +177,7 @@ void WaterfallPanel::drawPanelContents() {
float half_pixel = 1.0 / viewWidth;
float half_texel = 1.0 / (float) half_fft_size;
float vtexel = 1.0 / (float) waterfall_lines;
float vofs = (float) (waterfall_ofs[0] + 1) * vtexel;
float vofs = (float) (waterfall_ofs[0]) * vtexel;
glBindTexture(GL_TEXTURE_2D, waterfall[0]);
glBegin (GL_QUADS);
@ -191,7 +191,7 @@ void WaterfallPanel::drawPanelContents() {
glVertex3f(-1.0, 1.0, 0.0);
glEnd();
vofs = (float) (waterfall_ofs[1] + 1) * vtexel;
vofs = (float) (waterfall_ofs[1]) * vtexel;
glBindTexture(GL_TEXTURE_2D, waterfall[1]);
glBegin(GL_QUADS);
glTexCoord2f(0.0 + half_texel, 1.0 + vofs);