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background-opacity support

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This commit is contained in:
John Firebaugh
2014-08-28 10:34:10 -07:00
parent e2c2ab843e
commit 9f734ee61d
7 changed files with 21 additions and 9 deletions
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24
src/renderer/painter.cpp
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@@ -186,15 +186,23 @@ void Painter::renderTileLayer(const Tile& tile, std::shared_ptr<StyleLayer> laye
void Painter::renderBackground(std::shared_ptr<StyleLayer> layer_desc) {
const BackgroundProperties& properties = layer_desc->getProperties<BackgroundProperties>();
useProgram(plainShader->program);
plainShader->setMatrix(identityMatrix);
plainShader->setColor(properties.color);
backgroundArray.bind(*plainShader, backgroundBuffer, BUFFER_OFFSET(0));
Color color = properties.color;
color[0] *= properties.opacity;
color[1] *= properties.opacity;
color[2] *= properties.opacity;
color[3] *= properties.opacity;
glDisable(GL_STENCIL_TEST);
depthRange(strata + strata_epsilon, 1.0f);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glEnable(GL_STENCIL_TEST);
if ((color[3] >= 1.0f) == (pass == RenderPass::Opaque)) {
useProgram(plainShader->program);
plainShader->setMatrix(identityMatrix);
plainShader->setColor(color);
backgroundArray.bind(*plainShader, backgroundBuffer, BUFFER_OFFSET(0));
glDisable(GL_STENCIL_TEST);
depthRange(strata + strata_epsilon, 1.0f);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glEnable(GL_STENCIL_TEST);
}
}
const mat4 &Painter::translatedMatrix(const mat4& matrix, const std::array<float, 2> &translation, const Tile::ID &id, TranslateAnchorType anchor) {