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Move NV_shader_noperspective_interpolation to draft; add tests (#3572)
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sdk/tests/conformance2/extensions/nv-shader-noperspective-interpolation.html
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,251 @@ | ||
| <!-- | ||
| Copyright (c) 2023 The Khronos Group Inc. | ||
| Use of this source code is governed by an MIT-style license that can be | ||
| found in the LICENSE.txt file. | ||
| --> | ||
|
|
||
| <!DOCTYPE html> | ||
| <html> | ||
| <head> | ||
| <meta charset="utf-8"> | ||
| <title>WebGL NV_shader_noperspective_interpolation Conformance Tests</title> | ||
| <link rel="stylesheet" href="../../resources/js-test-style.css"/> | ||
| <script src="../../js/js-test-pre.js"></script> | ||
| <script src="../../js/webgl-test-utils.js"></script> | ||
| </head> | ||
| <body> | ||
| <canvas width="128" height="128" id="c"></canvas> | ||
| <div id="description"></div> | ||
| <div id="console"></div> | ||
| <script> | ||
| "use strict"; | ||
| description("This test verifies the functionality of the NV_shader_noperspective_interpolation extension, if it is available."); | ||
|
|
||
| debug(""); | ||
|
|
||
| var wtu = WebGLTestUtils; | ||
| var gl = wtu.create3DContext("c", null, 2); | ||
| var ext; | ||
|
|
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| function runShaderTests(extensionEnabled) { | ||
| debug(""); | ||
| debug("Testing various shader compiles with extension " + (extensionEnabled ? "enabled" : "disabled")); | ||
|
|
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| const macroVertex = `#version 300 es | ||
| in vec4 vPosition; | ||
| void main() { | ||
| #ifdef GL_NV_shader_noperspective_interpolation | ||
| gl_Position = vPosition; | ||
| #else | ||
| #error no GL_NV_shader_noperspective_interpolation; | ||
| #endif | ||
| }`; | ||
|
|
||
| const macroFragment = `#version 300 es | ||
| precision highp float; | ||
| out vec4 my_FragColor; | ||
| void main() { | ||
| #ifdef GL_NV_shader_noperspective_interpolation | ||
| my_FragColor = vec4(1.0, 0.0, 0.0, 1.0); | ||
| #else | ||
| #error no GL_NV_shader_noperspective_interpolation; | ||
| #endif | ||
| }`; | ||
|
|
||
| for (const shaders of [[wtu.simpleVertexShaderESSL300, macroFragment], | ||
| [macroVertex, wtu.simpleColorFragmentShaderESSL300]]) { | ||
| // Expect the macro shader to succeed ONLY if enabled | ||
| if (wtu.setupProgram(gl, shaders)) { | ||
| if (extensionEnabled) { | ||
| testPassed("Macro defined in shaders when extension is enabled"); | ||
| } else { | ||
| testFailed("Macro defined in shaders when extension is disabled"); | ||
| } | ||
| } else { | ||
| if (extensionEnabled) { | ||
| testFailed("Macro not defined in shaders when extension is enabled"); | ||
| } else { | ||
| testPassed("Macro not defined in shaders when extension is disabled"); | ||
| } | ||
| } | ||
| } | ||
|
|
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| const missingVertex = `#version 300 es | ||
| noperspective out float interpolant; | ||
| in vec4 vPosition; | ||
| void main() { | ||
| gl_Position = vPosition; | ||
| }`; | ||
|
|
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| const missingFragment = `#version 300 es | ||
| precision highp float; | ||
| noperspective in float interpolant; | ||
| out vec4 my_FragColor; | ||
| void main() { | ||
| my_FragColor = vec4(1.0, 0.0, 0.0, 1.0); | ||
| }`; | ||
|
|
||
| // Always expect the shader missing the #extension pragma to fail (whether enabled or not) | ||
| for (const shaders of [[missingVertex, wtu.simpleColorFragmentShaderESSL300], | ||
| [wtu.simpleVertexShaderESSL300, missingFragment], | ||
| [missingVertex, missingFragment]]) { | ||
| if (wtu.setupProgram(gl, shaders)) { | ||
| testFailed("Noperspective interpolation qualifier allowed without #extension pragma"); | ||
| } else { | ||
| testPassed("Noperspective interpolation qualifier disallowed without #extension pragma"); | ||
| } | ||
| } | ||
|
|
||
| const validVertex = `#version 300 es | ||
| #extension GL_NV_shader_noperspective_interpolation : enable | ||
| noperspective out float interpolant; | ||
| in vec4 vPosition; | ||
| void main() { | ||
| gl_Position = vPosition; | ||
| }`; | ||
|
|
||
| const validFragment = `#version 300 es | ||
| #extension GL_NV_shader_noperspective_interpolation : enable | ||
| precision highp float; | ||
| noperspective in float interpolant; | ||
| out vec4 my_FragColor; | ||
| void main() { | ||
| my_FragColor = vec4(1.0, 0.0, 0.0, 1.0); | ||
| }`; | ||
|
|
||
| // Try to compile a shader using a noperspective qualifier that should only succeed if enabled | ||
| if (wtu.setupProgram(gl, [validVertex, validFragment])) { | ||
| if (extensionEnabled) { | ||
| testPassed("Noperspective interpolation qualifier compiled successfully when extension enabled"); | ||
| } else { | ||
| testFailed("Noperspective interpolation qualifier compiled successfully when extension disabled"); | ||
| } | ||
| } else { | ||
| if (extensionEnabled) { | ||
| testFailed("Noperspective interpolation qualifier failed to compile when extension enabled"); | ||
| } else { | ||
| testPassed("Noperspective interpolation qualifier failed to compile when extension disabled"); | ||
| } | ||
| } | ||
|
|
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| debug(""); | ||
| } | ||
|
|
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| function runInterpolationTest() { | ||
| function draw(program, skew) { | ||
| gl.useProgram(program); | ||
|
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| const posLoc = gl.getAttribLocation(program, "position"); | ||
| const colLoc = gl.getAttribLocation(program, "color"); | ||
|
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| const buf = gl.createBuffer(); | ||
| gl.bindBuffer(gl.ARRAY_BUFFER, buf); | ||
| gl.bufferData( | ||
| gl.ARRAY_BUFFER, | ||
| new Float32Array([ | ||
| -1.0, -1.0, 0.0, 1.0, | ||
| +1.0, -1.0, 0.0, 1.0, | ||
| 0.0, +1.0 * skew, 0.0, skew, | ||
|
|
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| 1.0, 0.0, 0.0, 1.0, | ||
| 0.0, 1.0, 0.0, 1.0, | ||
| 0.0, 0.0, 1.0, 1.0]), | ||
| gl.STATIC_DRAW); | ||
|
|
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| gl.vertexAttribPointer(posLoc, 4, gl.FLOAT, false, 0, 0); | ||
| gl.vertexAttribPointer(colLoc, 4, gl.FLOAT, false, 0, 48); | ||
| gl.enableVertexAttribArray(posLoc); | ||
| gl.enableVertexAttribArray(colLoc); | ||
| gl.drawArrays(gl.TRIANGLES, 0, 3); | ||
| } | ||
|
|
||
| const vertexSmooth = `#version 300 es | ||
| in vec4 position; | ||
| in vec4 color; | ||
| smooth out vec4 interp_color; | ||
| void main() { | ||
| gl_Position = position; | ||
| interp_color = color; | ||
| }`; | ||
|
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| const fragmentSmooth = `#version 300 es | ||
| precision highp float; | ||
| smooth in vec4 interp_color; | ||
| out vec4 fragColor; | ||
| void main() { | ||
| fragColor = interp_color; | ||
| }`; | ||
| const programSmooth = wtu.setupProgram(gl, [vertexSmooth, fragmentSmooth]); | ||
|
|
||
| debug("Get non-skewed value with smooth interpolation"); | ||
| gl.clearColor(0.0, 0.0, 0.0, 1.0); | ||
| gl.clear(gl.COLOR_BUFFER_BIT); | ||
| draw(programSmooth, 1.0); | ||
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors"); | ||
|
|
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| const smoothColor = new Uint8Array(4); | ||
| gl.readPixels(64, 64, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, smoothColor); | ||
|
|
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| const vertexNoperspective = `#version 300 es | ||
| #extension GL_NV_shader_noperspective_interpolation : require | ||
| in vec4 position; | ||
| in vec4 color; | ||
| noperspective out vec4 interp_color; | ||
| void main() { | ||
| gl_Position = position; | ||
| interp_color = color; | ||
| }`; | ||
|
|
||
| const fragmentNoperspective = `#version 300 es | ||
| #extension GL_NV_shader_noperspective_interpolation : require | ||
| precision highp float; | ||
| noperspective in vec4 interp_color; | ||
| out vec4 fragColor; | ||
| void main() { | ||
| fragColor = interp_color; | ||
| }`; | ||
| const programNoperspective = wtu.setupProgram(gl, [vertexNoperspective, fragmentNoperspective]); | ||
|
|
||
| debug(""); | ||
| debug("Check non-skewed value with noperspective interpolation"); | ||
| gl.clear(gl.COLOR_BUFFER_BIT); | ||
| draw(programNoperspective, 1.0); | ||
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors"); | ||
| wtu.checkCanvasRect(gl, 64, 64, 1, 1, smoothColor, "Non-skewed noperspective should match smooth"); | ||
|
|
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| debug(""); | ||
| debug("Check skewed value with noperspective interpolation"); | ||
| gl.clear(gl.COLOR_BUFFER_BIT); | ||
| draw(programNoperspective, 2.0); | ||
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, "should be no errors"); | ||
| wtu.checkCanvasRect(gl, 64, 64, 1, 1, smoothColor, "Skewed noperspective should match smooth"); | ||
| } | ||
|
|
||
| function runTest() { | ||
| if (!gl) { | ||
| testFailed("WebGL context does not exist"); | ||
| return; | ||
| } | ||
| testPassed("WebGL context exists"); | ||
|
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| runShaderTests(false); | ||
|
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| ext = gl.getExtension("NV_shader_noperspective_interpolation"); | ||
| wtu.runExtensionSupportedTest(gl, "NV_shader_noperspective_interpolation", ext !== null); | ||
|
|
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| if (!ext) { | ||
| testPassed("No NV_shader_noperspective_interpolation support -- this is legal"); | ||
| } else { | ||
| testPassed("Successfully enabled NV_shader_noperspective_interpolation extension"); | ||
| runShaderTests(true); | ||
| runInterpolationTest(); | ||
| } | ||
| } | ||
|
|
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| runTest(); | ||
|
|
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| var successfullyParsed = true; | ||
| </script> | ||
| <script src="../../js/js-test-post.js"></script> | ||
| </body> | ||
| </html> |