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Avoid rendering outside WebGL layer and source extent

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This commit is contained in:
Tim Schaub
2022-02-05 15:20:07 -07:00
parent 459cd51ae2
commit adbbc05159
8 changed files with 171 additions and 1 deletions
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37
test/browser/spec/ol/layer/WebGLTile.test.js
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@@ -87,7 +87,11 @@ describe('ol/layer/WebGLTile', function () {
#else
precision mediump float;
#endif
varying vec2 v_textureCoord;
varying vec2 v_mapCoord;
uniform vec4 u_renderExtent;
uniform float u_transitionAlpha;
uniform float u_texturePixelWidth;
uniform float u_texturePixelHeight;
@@ -97,7 +101,16 @@ describe('ol/layer/WebGLTile', function () {
uniform float u_var_g;
uniform float u_var_b;
uniform sampler2D u_tileTextures[1];
void main() {
if (
v_mapCoord[0] < u_renderExtent[0] ||
v_mapCoord[1] < u_renderExtent[1] ||
v_mapCoord[0] > u_renderExtent[2] ||
v_mapCoord[1] > u_renderExtent[3]
) {
discard;
}
vec4 color = texture2D(u_tileTextures[0], v_textureCoord);
color = vec4(u_var_r / 255.0, u_var_g / 255.0, u_var_b / 255.0, 1.0);
if (color.a == 0.0) {
@@ -112,12 +125,24 @@ describe('ol/layer/WebGLTile', function () {
expect(compileShaderSpy.getCall(1).args[0].replace(/[ \n]+/g, ' ')).to.be(
`
attribute vec2 a_textureCoord;
uniform mat4 u_tileTransform;
uniform float u_texturePixelWidth;
uniform float u_texturePixelHeight;
uniform float u_textureResolution;
uniform float u_textureOriginX;
uniform float u_textureOriginY;
uniform float u_depth;
varying vec2 v_textureCoord;
varying vec2 v_mapCoord;
void main() {
v_textureCoord = a_textureCoord;
v_mapCoord = vec2(
u_textureOriginX + u_textureResolution * u_texturePixelWidth * v_textureCoord[0],
u_textureOriginY - u_textureResolution * u_texturePixelHeight * v_textureCoord[1]
);
gl_Position = u_tileTransform * vec4(a_textureCoord, u_depth, 1.0);
}
`.replace(/[ \n]+/g, ' ')
@@ -163,6 +188,10 @@ describe('ol/layer/WebGLTile', function () {
#else
precision mediump float;
#endif varying vec2 v_textureCoord;
varying vec2 v_mapCoord;
uniform vec4 u_renderExtent;
uniform float u_transitionAlpha;
uniform float u_texturePixelWidth;
uniform float u_texturePixelHeight;
@@ -188,6 +217,14 @@ describe('ol/layer/WebGLTile', function () {
}
void main() {
if (
v_mapCoord[0] < u_renderExtent[0] ||
v_mapCoord[1] < u_renderExtent[1] ||
v_mapCoord[0] > u_renderExtent[2] ||
v_mapCoord[1] > u_renderExtent[3]
) {
discard;
}
vec4 color = texture2D(u_tileTextures[0], v_textureCoord);
color = vec4((getBandValue(4.0, 0.0, 0.0) / 3000.0), (getBandValue(1.0, 0.0, 0.0) / 3000.0), (getBandValue(2.0, 0.0, 0.0) / 3000.0), 1.0);
if (color.a == 0.0) {