import { modernizeShader } from "../../Source/Cesium.js";
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describe("Renderer/modernizeShader", function () {
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it("adds version string", function () {
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var simple =
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"#define OUTPUT_DECLARATION \n" + "void main() \n" + "{ \n" + "} \n";
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var output = modernizeShader(simple, true);
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var expected = "#version 300 es\n#define WEBGL_2";
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expect(output.startsWith(expected)).toBe(true);
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});
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it("replace existing version string", function () {
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var simple =
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"#version 200 es" +
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"#define OUTPUT_DECLARATION \n" +
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"void main() \n" +
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"{ \n" +
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"} \n";
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var output = modernizeShader(simple, true);
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var expected = "#version 300 es\n#define WEBGL_2";
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expect(output.startsWith(expected)).toBe(true);
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});
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it("removes extensions", function () {
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var extensions =
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"#define OUTPUT_DECLARATION \n" +
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"#extension GL_EXT_draw_buffers : enable \n" +
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"void main() \n" +
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"{ \n" +
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"} \n";
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var output = modernizeShader(extensions, true);
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var notExpected = "#extension GL_EXT_draw_buffers : enable \n";
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expect(output).not.toContain(notExpected);
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});
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it("replace extension macro check with WEBGL_2", function () {
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var extensions =
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"#define OUTPUT_DECLARATION \n" +
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"#extension GL_EXT_draw_buffers : enable \n" +
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"void main() \n" +
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"{ \n" +
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" #ifdef GL_EXT_draw_buffers\n" +
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" #endif //GL_EXT_draw_buffers\n" +
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" #if defined(GL_EXT_draw_buffers)\n" +
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" #endif //GL_EXT_draw_buffers\n" +
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"} \n";
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var output = modernizeShader(extensions, true);
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var notExpected = "#extension GL_EXT_draw_buffers : enable \n";
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var expected =
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" #ifdef WEBGL_2\n" +
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" #endif //WEBGL_2\n" +
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" #if defined(WEBGL_2)\n" +
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" #endif //WEBGL_2\n";
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expect(output).not.toContain(notExpected);
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expect(output).toContain(expected);
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});
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it("throws exception if no output declaration", function () {
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var noOutputDeclaration = "void main() \n" + "{ \n" + "} \n";
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var runFunc = function () {
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modernizeShader(noOutputDeclaration, true);
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};
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expect(runFunc).toThrowDeveloperError();
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});
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it("creates layout qualifier for gl_FragColor", function () {
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var noQualifiers =
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"#define OUTPUT_DECLARATION \n" +
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"void main() \n" +
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"{ \n" +
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" gl_FragColor = vec4(0.0); \n" +
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"} \n";
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var output = modernizeShader(noQualifiers, true);
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var expected = "layout(location = 0) out vec4 czm_fragColor;";
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expect(output).toContain(expected);
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});
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it("creates layout qualifier for gl_FragData", function () {
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var noQualifiers =
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"#define OUTPUT_DECLARATION \n" +
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"void main() \n" +
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"{ \n" +
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" gl_FragData[0] = vec4(0.0); \n" +
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"} \n";
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var output = modernizeShader(noQualifiers, true);
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var expected = "layout(location = 0) out vec4 czm_out0;";
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expect(output).toContain(expected);
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});
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it("creates layout qualifier for MRT", function () {
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var noQualifiers =
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"#define OUTPUT_DECLARATION \n" +
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"#extension GL_EXT_draw_buffers : enable \n" +
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"void main() \n" +
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"{ \n" +
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" gl_FragData[0] = vec4(0.0); \n" +
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" gl_FragData[1] = vec4(1.0); \n" +
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"} \n";
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var output = modernizeShader(noQualifiers, true);
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var expected0 = "layout(location = 0) out vec4 czm_out0;";
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var expected1 = "layout(location = 1) out vec4 czm_out1;";
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expect(output).toContain(expected0);
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expect(output).toContain(expected1);
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});
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it("does not create layout qualifier for reserved word lookalike variables", function () {
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var noQualifiers =
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"#define OUTPUT_DECLARATION \n" +
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"uniform sampler2D example; \n" +
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"void main() \n" +
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"{ \n" +
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" vec4 gl_FragData_ = vec4(0.0); \n" +
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" vec4 a_gl_FragData = vec4(0.0); \n" +
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" vec2 thisIsNotAGoodNameForAtexture2D = vec2(0.0); \n" +
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" vec4 gl_FragColor = texture2D(example, thisIsNotAGoodNameForAtexture2D); \n" +
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"} \n";
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var output = modernizeShader(noQualifiers, true);
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var expectedBadName = "vec2 thisIsNotAGoodNameForAtexture2D";
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var expectedVariable = "vec4 a_gl_FragData = vec4(0.0);";
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var expectedTextureCall =
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"texture(example, thisIsNotAGoodNameForAtexture2D)";
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var notExpectedLayout = "layout(location = 0) out czm_out";
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expect(output).toContain(expectedBadName);
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expect(output).toContain(expectedVariable);
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expect(output).toContain(expectedTextureCall);
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expect(output).not.toContain(notExpectedLayout);
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});
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it("creates layout qualifier with swizzle", function () {
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var noQualifiers =
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"#define OUTPUT_DECLARATION \n" +
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"#extension GL_EXT_draw_buffers : enable \n" +
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"void main() \n" +
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"{ \n" +
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" gl_FragData[0] = vec4(0.0); \n" +
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" gl_FragData[1].xyz = vec3(1.0); \n" +
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"} \n";
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var output = modernizeShader(noQualifiers, true);
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var expected0 = "layout(location = 0) out vec4 czm_out0;";
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var expected1 = "layout(location = 1) out vec4 czm_out1;";
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expect(output).toContain(expected0);
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expect(output).toContain(expected1);
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});
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it("removes old functions/variables from fragment shader", function () {
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var old_fragment =
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"#define OUTPUT_DECLARATION \n" +
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"#extension GL_EXT_draw_buffers : enable \n" +
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"uniform sampler2D example; \n" +
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"uniform sampler2D exampleCube; \n" +
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"uniform sampler2D example3D; \n" +
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"varying vec2 v_textureCoordinates; \n" +
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"void main() \n" +
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"{ \n" +
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" gl_FragData[0] = texture2D(example, v_textureCoordinates); \n" +
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" gl_FragData[1] = textureCube(exampleCube, v_textureCoordinates); \n" +
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" gl_FragData[2] = texture3D(example3D, v_textureCoordinates); \n" +
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" gl_FragDepthEXT = 0.0; \n" +
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"} \n";
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var output = modernizeShader(old_fragment, true);
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var expectedDepth = "gl_FragDepth = 0.0;";
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var expectedTexture2D = "texture(example, v_textureCoordinates);";
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var expectedTextureCube = "texture(exampleCube, v_textureCoordinates);";
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var expectedTexture3D = "texture(example3D, v_textureCoordinates);";
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var expectedIn = "in vec2 v_textureCoordinates;";
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var notExpectedDepth = "gl_FragDepthEXT = 0.0;";
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var notExpectedTexture2D = "texture2D(example, v_textureCoordinates);";
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var notExpectedTextureCube =
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"textureCube(exampleCube, v_textureCoordinates);";
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var notExpectedTexture3D = "texture3D(example3D, v_textureCoordinates);";
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var notExpectedVarying = "varying vec2 v_textureCoordinates;";
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expect(output).toContain(expectedDepth);
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expect(output).toContain(expectedTexture2D);
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expect(output).toContain(expectedTextureCube);
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expect(output).toContain(expectedTexture3D);
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expect(output).toContain(expectedIn);
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expect(output).not.toContain(notExpectedDepth);
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expect(output).not.toContain(notExpectedTexture2D);
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expect(output).not.toContain(notExpectedTextureCube);
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expect(output).not.toContain(notExpectedTexture3D);
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expect(output).not.toContain(notExpectedVarying);
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});
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it("removes old functions/variables from vertex shader", function () {
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var old_vertex =
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"#define OUTPUT_DECLARATION \n" +
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"attribute vec4 position; \n" +
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"varying vec4 varyingVariable; \n" +
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"void main() \n" +
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"{ \n" +
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" gl_Position = position; \n" +
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" varyingVariable = position.wzyx; \n" +
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"} \n";
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var output = modernizeShader(old_vertex, false);
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var expectedOut = "out vec4 varyingVariable;";
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var expectedIn = "in vec4 position;";
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var notExpectedAttribute = "attribute vec4 varyingVariable;";
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var notExpectedVarying = "varying vec2 varyingVariable;";
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expect(output).toContain(expectedOut);
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expect(output).toContain(expectedIn);
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expect(output).not.toContain(notExpectedAttribute);
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expect(output).not.toContain(notExpectedVarying);
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});
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it("creates single layout qualifier under single branch, single condition", function () {
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var noQualifiers =
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"#define OUTPUT_DECLARATION \n" +
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"#define EXAMPLE_BRANCH \n" +
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"void main() \n" +
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"{ \n" +
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" #ifdef EXAMPLE_BRANCH \n" +
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" gl_FragData[0] = vec4(0.0); \n" +
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" #endif //EXAMPLE_BRANCH \n" +
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"} \n";
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var output = modernizeShader(noQualifiers, true);
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var expected =
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"#ifdef EXAMPLE_BRANCH \nlayout(location = 0) out vec4 czm_out0;\n#endif";
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expect(output).toContain(expected);
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});
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it("creates multiple layout qualifiers under single branch, single condition", function () {
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var noQualifiers =
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"#define OUTPUT_DECLARATION \n" +
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"#define EXAMPLE_BRANCH \n" +
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"void main() \n" +
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"{ \n" +
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" #ifdef EXAMPLE_BRANCH \n" +
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" gl_FragData[0] = vec4(0.0); \n" +
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" gl_FragData[1] = vec4(1.0); \n" +
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" #endif //EXAMPLE_BRANCH \n" +
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"} \n";
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var output = modernizeShader(noQualifiers, true);
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var expected0 =
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"#ifdef EXAMPLE_BRANCH \nlayout(location = 0) out vec4 czm_out0;\n#endif";
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var expected1 =
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"#ifdef EXAMPLE_BRANCH \nlayout(location = 1) out vec4 czm_out1;\n#endif";
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expect(output).toContain(expected0);
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expect(output).toContain(expected1);
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});
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it("creates multiple layout qualifiers under multiple branches, single condition (cancels)", function () {
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var noQualifiers =
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"#define OUTPUT_DECLARATION \n" +
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"#define EXAMPLE_BRANCH \n" +
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"void main() \n" +
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"{ \n" +
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" #ifdef EXAMPLE_BRANCH \n" +
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" gl_FragData[0] = vec4(0.0); \n" +
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" gl_FragData[1] = vec4(1.0); \n" +
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" #endif //EXAMPLE_BRANCH \n" +
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" #ifndef EXAMPLE_BRANCH \n" +
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" gl_FragData[0] = vec4(0.0); \n" +
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" gl_FragData[1] = vec4(1.0); \n" +
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" #endif //!EXAMPLE_BRANCH \n" +
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"} \n";
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var output = modernizeShader(noQualifiers, true);
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var notExpected =
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"#ifdef EXAMPLE_BRANCH \nlayout(location = 0) out vec4 czm_out0;\n#endif";
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expect(output).not.toContain(notExpected);
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});
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it("creates single layout qualifier under multiple branches, multiple conditions (cancels)", function () {
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var noQualifiers =
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"#define OUTPUT_DECLARATION \n" +
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"#define EXAMPLE_BRANCH \n" +
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"#define EXAMPLE_BRANCH1 \n" +
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"void main() \n" +
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"{ \n" +
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" #ifdef EXAMPLE_BRANCH \n" +
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" gl_FragData[0] = vec4(0.0); \n" +
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" #endif //EXAMPLE_BRANCH \n" +
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" #ifdef EXAMPLE_BRANCH1 \n" +
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" gl_FragData[0] = vec4(0.0); \n" +
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" #endif //EXAMPLE_BRANCH1 \n" +
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"} \n";
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var output = modernizeShader(noQualifiers, true);
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var notExpected =
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"#ifdef EXAMPLE_BRANCH \nlayout(location = 0) out vec4 czm_out0;\n#endif";
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expect(output).not.toContain(notExpected);
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});
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it("creates multiple layout qualifiers under multiple branches, multiple conditions (cascades)", function () {
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var noQualifiers =
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"#define OUTPUT_DECLARATION \n" +
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"#define EXAMPLE_BRANCH \n" +
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"#define EXAMPLE_BRANCH1 \n" +
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"void main() \n" +
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"{ \n" +
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" #ifdef EXAMPLE_BRANCH \n" +
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" gl_FragData[0] = vec4(0.0); \n" +
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" #ifdef EXAMPLE_BRANCH1 \n" +
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" gl_FragData[1] = vec4(1.0); \n" +
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" #endif //EXAMPLE_BRANCH1 \n" +
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" #endif //EXAMPLE_BRANCH \n" +
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"} \n";
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var output = modernizeShader(noQualifiers, true);
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var expected0 =
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"#ifdef EXAMPLE_BRANCH \nlayout(location = 0) out vec4 czm_out0;\n#endif";
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var expected1 = /#ifdef (EXAMPLE_BRANCH|EXAMPLE_BRANCH1)\s*\n\s*#ifdef (EXAMPLE_BRANCH1|EXAMPLE_BRANCH)\s*\n\s*layout\(location = 1\) out vec4 czm_out1;/g;
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var containsExpected0 = expected1.test(output);
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expect(output).toContain(expected0);
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expect(containsExpected0).toBe(true);
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});
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it("creates single layout qualifier under multiple branches, single condition (else)", function () {
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var noQualifiers =
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"#define OUTPUT_DECLARATION \n" +
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"#define EXAMPLE_BRANCH \n" +
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"void main() \n" +
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"{ \n" +
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" #ifdef EXAMPLE_BRANCH \n" +
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" gl_FragData[0] = vec4(0.0); \n" +
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" #else \n" +
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" gl_FragData[0] = vec4(1.0); \n" +
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" #endif //EXAMPLE_BRANCH \n" +
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"} \n";
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var output = modernizeShader(noQualifiers, true);
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var notExpected =
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"#ifdef EXAMPLE_BRANCH \nlayout(location = 0) out vec4 czm_out0;\n#endif";
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expect(output).not.toContain(notExpected);
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});
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it("creates branched layout qualifiers for gl_FragColor and gl_FragData", function () {
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var noQualifiers =
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"#define OUTPUT_DECLARATION \n" +
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"#define EXAMPLE_BRANCH \n" +
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"void main() \n" +
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"{ \n" +
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" #ifdef EXAMPLE_BRANCH \n" +
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" gl_FragData[0] = vec4(0.0); \n" +
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" #else \n" +
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" gl_FragColor = vec4(1.0); \n" +
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" #endif //EXAMPLE_BRANCH \n" +
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"} \n";
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var output = modernizeShader(noQualifiers, true);
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var expected0 =
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"#ifdef EXAMPLE_BRANCH \nlayout(location = 0) out vec4 czm_out0;\n#endif";
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var expected1 =
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"#ifndef EXAMPLE_BRANCH \nlayout(location = 0) out vec4 czm_fragColor;\n#endif";
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expect(output).toContain(expected0);
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expect(output).toContain(expected1);
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});
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});
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