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Unify drawing logic into glUtils.

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Bert Peters
2018-03-16 14:25:14 +01:00
parent c447a496fd
commit c814d274d4
5 changed files with 30 additions and 33 deletions
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15
src/glutils.cpp
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@@ -138,3 +138,18 @@ void fmri::setOrthographicProjection() {
// switch back to modelview mode
glMatrixMode(GL_MODELVIEW);
}
void fmri::drawImageTiles(int n, const float *vertexBuffer, const float *textureCoords, const Texture &texture)
{
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glEnableClientState(GL_VERTEX_ARRAY);
glEnable(GL_TEXTURE_2D);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
texture.bind(GL_TEXTURE_2D);
glTexCoordPointer(2, GL_FLOAT, 0, textureCoords);
glVertexPointer(3, GL_FLOAT, 0, vertexBuffer);
glDrawArrays(GL_QUADS, 0, n);
glDisable(GL_TEXTURE_2D);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
}