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Actually show rendered textures for image-like-layers.

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Bert Peters
2018-02-23 14:00:14 +01:00
parent 86d2b8b48a
commit d5dd49b3d6
2 changed files with 34 additions and 19 deletions
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21
src/MultiImageVisualisation.cpp
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@@ -52,9 +52,24 @@ MultiImageVisualisation::~MultiImageVisualisation()
void MultiImageVisualisation::render()
{
static const float textureCoords[] = {
1, 1,
1, 0,
0, 0,
0, 1,
};
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glEnableClientState(GL_VERTEX_ARRAY);
glColor3f(0.3, 0.3, 0.3);
glVertexPointer(3, GL_FLOAT, 0, vertexBuffer.get());
glDrawArrays(GL_QUADS, 0, 4 * textureReferences.size());
glEnable(GL_TEXTURE_2D);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
for (auto i : Range(textureReferences.size())) {
glBindTexture(GL_TEXTURE_2D, textureReferences[i]);
glTexCoordPointer(2, GL_FLOAT, 0, textureCoords);
glVertexPointer(3, GL_FLOAT, 0, vertexBuffer.get() + i * BASE_VERTICES.size());
glDrawArrays(GL_QUADS, 0, 4);
}
glDisable(GL_TEXTURE_2D);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
}