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'use strict';
const trivialVsSrc = `
void main()
{
gl_Position = vec4(0,0,0,1);
}
`;
const trivialFsSrc = `
void main()
{
gl_FragColor = vec4(0,1,0,1);
}
`;
const trivialVsMrtSrc100 = `
void main()
{
gl_Position = vec4(0,0,0,1);
}
`;
const trivialFsMrtSrc100 = `
#extension GL_EXT_draw_buffers : require
precision mediump float;
void main()
{
gl_FragData[0] = vec4(1, 0, 0, 1);
gl_FragData[1] = vec4(0, 1, 0, 1);
}
`;
const trivialVsMrtSrc300 = `#version 300 es
void main()
{
gl_Position = vec4(0,0,0,1);
}
`;
const trivialFsMrtSrc300 = `#version 300 es
precision mediump float;
layout(location = 0) out vec4 o_color0;
layout(location = 1) out vec4 o_color1;
void main()
{
o_color0 = vec4(1, 0, 0, 1);
o_color1 = vec4(0, 1, 0, 1);
}
`;
function testExtFloatBlend(internalFormat) {
const shouldBlend = gl.getSupportedExtensions().indexOf('EXT_float_blend') != -1;
const prog = wtu.setupProgram(gl, [trivialVsSrc, trivialFsSrc]);
gl.useProgram(prog);
const tex = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, tex);
gl.texImage2D(gl.TEXTURE_2D, 0, internalFormat, 1, 1, 0, gl.RGBA, gl.FLOAT, null);
const fb = gl.createFramebuffer();
gl.bindFramebuffer(gl.FRAMEBUFFER, fb);
gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, tex, 0);
shouldBe('gl.checkFramebufferStatus(gl.FRAMEBUFFER)', 'gl.FRAMEBUFFER_COMPLETE');
gl.disable(gl.BLEND);
gl.drawArrays(gl.POINTS, 0, 1);
wtu.glErrorShouldBe(gl, 0, 'Float32 draw target without blending');
gl.enable(gl.BLEND);
gl.drawArrays(gl.POINTS, 0, 1);
wtu.glErrorShouldBe(gl, shouldBlend ? 0 : gl.INVALID_OPERATION,
'Float32 blending is ' + (shouldBlend ? '' : 'not ') + 'allowed ');
gl.deleteFramebuffer(fb);
gl.deleteTexture(tex);
}
function testExtFloatBlendMRTImpl(version, internalFormat, shaders, attachments, drawBuffers) {
const shouldBlend = gl.getSupportedExtensions().indexOf('EXT_float_blend') != -1;
const prog = wtu.setupProgram(gl, shaders);
gl.useProgram(prog);
const tex1 = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, tex1);
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
const tex2 = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, tex2);
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
const texF1 = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texF1);
gl.texImage2D(gl.TEXTURE_2D, 0, internalFormat, 1, 1, 0, gl.RGBA, gl.FLOAT, null);
const texF2 = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texF2);
gl.texImage2D(gl.TEXTURE_2D, 0, internalFormat, 1, 1, 0, gl.RGBA, gl.FLOAT, null);
const fb = gl.createFramebuffer();
gl.bindFramebuffer(gl.FRAMEBUFFER, fb);
gl.framebufferTexture2D(gl.FRAMEBUFFER, attachments[0], gl.TEXTURE_2D, tex1, 0);
gl.framebufferTexture2D(gl.FRAMEBUFFER, attachments[1], gl.TEXTURE_2D, tex2, 0);
shouldBe('gl.checkFramebufferStatus(gl.FRAMEBUFFER)', 'gl.FRAMEBUFFER_COMPLETE');
drawBuffers(attachments);
gl.enable(gl.BLEND);
gl.drawArrays(gl.POINTS, 0, 1);
wtu.glErrorShouldBe(gl, 0, 'No Float32 color attachment');
if (version < 2) {
// EXT_draw_buffers require all color buffers having the same number of bitplanes
gl.framebufferTexture2D(gl.FRAMEBUFFER, attachments[0], gl.TEXTURE_2D, texF1, 0);
gl.framebufferTexture2D(gl.FRAMEBUFFER, attachments[1], gl.TEXTURE_2D, texF2, 0);
shouldBe('gl.checkFramebufferStatus(gl.FRAMEBUFFER)', 'gl.FRAMEBUFFER_COMPLETE');
gl.drawArrays(gl.POINTS, 0, 1);
wtu.glErrorShouldBe(gl, shouldBlend ? 0 : gl.INVALID_OPERATION,
'Float32 blending is ' + (shouldBlend ? '' : 'not ') + 'allowed ');
} else {
gl.framebufferTexture2D(gl.FRAMEBUFFER, attachments[0], gl.TEXTURE_2D, texF1, 0);
shouldBe('gl.checkFramebufferStatus(gl.FRAMEBUFFER)', 'gl.FRAMEBUFFER_COMPLETE');
gl.drawArrays(gl.POINTS, 0, 1);
wtu.glErrorShouldBe(gl, shouldBlend ? 0 : gl.INVALID_OPERATION,
'Float32 blending is ' + (shouldBlend ? '' : 'not ') + 'allowed ');
gl.framebufferTexture2D(gl.FRAMEBUFFER, attachments[1], gl.TEXTURE_2D, texF2, 0);
shouldBe('gl.checkFramebufferStatus(gl.FRAMEBUFFER)', 'gl.FRAMEBUFFER_COMPLETE');
gl.drawArrays(gl.POINTS, 0, 1);
wtu.glErrorShouldBe(gl, shouldBlend ? 0 : gl.INVALID_OPERATION,
'Float32 blending is ' + (shouldBlend ? '' : 'not ') + 'allowed ');
gl.framebufferTexture2D(gl.FRAMEBUFFER, attachments[0], gl.TEXTURE_2D, tex1, 0);
shouldBe('gl.checkFramebufferStatus(gl.FRAMEBUFFER)', 'gl.FRAMEBUFFER_COMPLETE');
gl.drawArrays(gl.POINTS, 0, 1);
wtu.glErrorShouldBe(gl, shouldBlend ? 0 : gl.INVALID_OPERATION,
'Float32 blending is ' + (shouldBlend ? '' : 'not ') + 'allowed ');
drawBuffers([attachments[0]]);
shouldBe('gl.checkFramebufferStatus(gl.FRAMEBUFFER)', 'gl.FRAMEBUFFER_COMPLETE');
gl.drawArrays(gl.POINTS, 0, 1);
wtu.glErrorShouldBe(gl, 0, 'Float32 color attachment draw buffer is not enabled');
drawBuffers(attachments);
gl.framebufferTexture2D(gl.FRAMEBUFFER, attachments[1], gl.TEXTURE_2D, tex2, 0);
shouldBe('gl.checkFramebufferStatus(gl.FRAMEBUFFER)', 'gl.FRAMEBUFFER_COMPLETE');
gl.drawArrays(gl.POINTS, 0, 1);
wtu.glErrorShouldBe(gl, 0, 'No Float32 color attachment');
}
gl.deleteFramebuffer(fb);
gl.deleteTexture(tex1);
gl.deleteTexture(tex2);
gl.deleteTexture(texF1);
gl.deleteTexture(texF2);
}
function testExtFloatBlendMRT(version, drawBuffersExt) {
if (version < 2) {
if (!drawBuffersExt) return;
testExtFloatBlendMRTImpl(
version,
gl.RGBA,
[trivialVsMrtSrc100, trivialFsMrtSrc100],
[drawBuffersExt.COLOR_ATTACHMENT0_WEBGL, drawBuffersExt.COLOR_ATTACHMENT1_WEBGL],
drawBuffersExt.drawBuffersWEBGL.bind(drawBuffersExt)
);
} else {
testExtFloatBlendMRTImpl(
version,
gl.RGBA32F,
[trivialVsMrtSrc300, trivialFsMrtSrc300],
[gl.COLOR_ATTACHMENT0, gl.COLOR_ATTACHMENT1],
gl.drawBuffers.bind(gl)
);
}
}
function testExtFloatBlendNonFloat32TypeImpl(internalFormat, formats) {
const shouldBlend = gl.getSupportedExtensions().indexOf('EXT_float_blend') != -1;
const prog = wtu.setupProgram(gl, [trivialVsSrc, trivialFsSrc]);
gl.useProgram(prog);
gl.enable(gl.BLEND);
const tex = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, tex);
gl.texImage2D(gl.TEXTURE_2D, 0, internalFormat, 1, 1, 0, gl.RGBA, gl.FLOAT, null);
const fb = gl.createFramebuffer();
gl.bindFramebuffer(gl.FRAMEBUFFER, fb);
gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, tex, 0);
shouldBe('gl.checkFramebufferStatus(gl.FRAMEBUFFER)', 'gl.FRAMEBUFFER_COMPLETE');
gl.drawArrays(gl.POINTS, 0, 1);
wtu.glErrorShouldBe(gl, shouldBlend ? 0 : gl.INVALID_OPERATION,
'Float32 blending is ' + (shouldBlend ? '' : 'not ') + 'allowed ');
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
gl.drawArrays(gl.POINTS, 0, 1);
wtu.glErrorShouldBe(gl, 0, 'UNSIGNED_BYTE should blend anyway');
for (let i = 0, len = formats.length; i < len; i++) {
gl.texImage2D(gl.TEXTURE_2D, 0, formats[i][0], 1, 1, 0, formats[i][1], formats[i][2], null);
gl.drawArrays(gl.POINTS, 0, 1);
wtu.glErrorShouldBe(gl, 0, 'Any other float type which is not 32-bit-Float should blend anyway');
}
gl.deleteFramebuffer(fb);
gl.deleteTexture(tex);
}
function testExtFloatBlendNonFloat32Type(version, oesTextureHalfFloat) {
if (version < 2) {
if (!oesTextureHalfFloat) return;
const formats = [
[gl.RGBA, gl.RGBA, oesTextureHalfFloat.HALF_FLOAT_OES]
];
testExtFloatBlendNonFloat32TypeImpl(gl.RGBA, formats);
} else {
const formats = [
[gl.RGBA16F, gl.RGBA, gl.HALF_FLOAT],
[gl.RGBA16F, gl.RGBA, gl.FLOAT],
[gl.RG16F, gl.RG, gl.FLOAT],
[gl.R16F, gl.RED, gl.FLOAT],
[gl.R11F_G11F_B10F, gl.RGB, gl.FLOAT]
];
testExtFloatBlendNonFloat32TypeImpl(gl.RGBA32F, formats);
}
}
/*
Copyright (c) 2019 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.
*/
|
