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| |
| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>Read or Draw when Attachment(s) Miss Image</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 id="example" width="8" height="8"></canvas> |
| <div id="description"></div> |
| <div id="console"></div> |
| |
| <script> |
| "use strict"; |
| |
| var wtu = WebGLTestUtils; |
| description("This test verifies the functionality of reading/drawing when color attachment(s) miss image."); |
| |
| var gl = wtu.create3DContext("example", undefined, 2); |
| |
| var tex_read = gl.createTexture(); |
| var tex_draw = gl.createTexture(); |
| var tex_depth = gl.createTexture(); |
| var tex_stencil = gl.createTexture(); |
| var fbo_read = gl.createFramebuffer(); |
| var fbo_draw = gl.createFramebuffer(); |
| var size = 8; |
| |
| if (!gl) { |
| testFailed("WebGL context does not exist"); |
| } else { |
| testPassed("WebGL context exists"); |
| |
| // READ_FRAMEBUFFER has image at COLOR_ATTACHMENT0. READ_FRAMEBUFFER is framebuffer complete. |
| // Read from COLOR_ATTACHMENT1, which has no image attached. |
| init_read_fbo(); |
| read(); |
| |
| // DRAW_FRAMEBUFFER has image at COLOR_ATTACHMENT0. DRAW_FRAMEBUFFER is framebuffer complete. |
| // Clear and draw COLOR_ATTACHMENT1 or COLOR_ATTACHMENT0 + COLOR_ATTACHMENT1 attaching point(s). |
| init_draw_fbo(); |
| clear(); |
| draw(); |
| |
| blit(); |
| } |
| |
| function init_read_fbo() { |
| gl.bindTexture(gl.TEXTURE_2D, tex_read); |
| wtu.fillTexture(gl, tex_read, size, size, [0x0, 0xff, 0xff, 0xff], 0, gl.RGBA, gl.UNSIGNED_BYTE, gl.RGBA8); |
| gl.bindFramebuffer(gl.READ_FRAMEBUFFER, fbo_read); |
| gl.framebufferTexture2D(gl.READ_FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, tex_read, 0); |
| if (gl.checkFramebufferStatus(gl.READ_FRAMEBUFFER) != gl.FRAMEBUFFER_COMPLETE) { |
| testFailed("Framebuffer incomplete."); |
| return; |
| } else { |
| testPassed("framebuffer complete!"); |
| } |
| } |
| |
| function init_draw_fbo() { |
| gl.bindTexture(gl.TEXTURE_2D, tex_draw); |
| wtu.fillTexture(gl, tex_draw, size, size, [0x0, 0xff, 0xff, 0xff], 0, gl.RGBA, gl.UNSIGNED_BYTE, gl.RGBA8); |
| wtu.fillTexture(gl, tex_depth, size, size, [0x80], 0, gl.DEPTH_COMPONENT, gl.UNSIGNED_INT, gl.DEPTH_COMPONENT16); |
| wtu.fillTexture(gl, tex_stencil, size, size, [0x40], 0, gl.DEPTH_STENCIL, gl.UNSIGNED_INT_24_8, gl.DEPTH24_STENCIL8); |
| gl.bindFramebuffer(gl.DRAW_FRAMEBUFFER, fbo_draw); |
| gl.framebufferTexture2D(gl.DRAW_FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, tex_draw, 0); |
| if (gl.checkFramebufferStatus(gl.DRAW_FRAMEBUFFER) != gl.FRAMEBUFFER_COMPLETE) { |
| testFailed("Framebuffer incomplete."); |
| return; |
| } else { |
| testPassed("framebuffer complete!"); |
| } |
| } |
| |
| function read() { |
| debug(""); |
| debug("read from a color buffer which has no image attached"); |
| |
| gl.bindFramebuffer(gl.FRAMEBUFFER, fbo_read); |
| gl.readBuffer(gl.COLOR_ATTACHMENT1); |
| |
| var data = new Uint8Array(size * size * 4); |
| gl.readPixels(0, 0, size, size, gl.RGBA, gl.UNSIGNED_BYTE, data); |
| wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "Should generate INVALID_OPERATION when reading from a color buffer without image."); |
| |
| var copy_2d = gl.createTexture(); |
| gl.bindTexture(gl.TEXTURE_2D, copy_2d); |
| gl.copyTexImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, 0, 0, size, size, 0); |
| wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "Should generate INVALID_OPERATION when reading from a color buffer without image."); |
| |
| gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, size, size, 0, gl.RGBA, gl.UNSIGNED_BYTE, null); |
| gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, size / 2, size / 2, 0, 0, size / 2, size / 2); |
| wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "Should generate INVALID_OPERATION when reading from a color buffer without image."); |
| |
| var copy_3d = gl.createTexture(); |
| gl.bindTexture(gl.TEXTURE_3D, copy_3d); |
| gl.texImage3D(gl.TEXTURE_3D, 0, gl.RGBA8, size, size, 2, 0, gl.RGBA, gl.UNSIGNED_BYTE, null); |
| gl.copyTexSubImage3D(gl.TEXTURE_3D, 0, size / 2, size / 2, 0, 0, 0, size / 2, size / 2); |
| wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "Should generate INVALID_OPERATION when reading from a color buffer without image."); |
| |
| gl.bindTexture(gl.TEXTURE_2D, null); |
| gl.deleteTexture(copy_2d); |
| gl.bindTexture(gl.TEXTURE_3D, null); |
| gl.deleteTexture(copy_3d); |
| } |
| |
| function checkTextureValue(fbo, buffer, value) { |
| gl.bindFramebuffer(gl.READ_FRAMEBUFFER, fbo); |
| gl.readBuffer(buffer); |
| wtu.checkCanvas(gl, value); |
| gl.readBuffer(gl.COLOR_ATTACHMENT0); |
| gl.bindFramebuffer(gl.READ_FRAMEBUFFER, null); |
| } |
| |
| function clear() { |
| debug(""); |
| debug("clear a color buffer which has no image attached"); |
| |
| gl.bindFramebuffer(gl.DRAW_FRAMEBUFFER, fbo_draw); |
| var color = [0.0, 1.0, 0.0, 1.0]; |
| gl.clearColor(color[0], color[1], color[2], color[3]); |
| gl.drawBuffers([gl.NONE, gl.COLOR_ATTACHMENT1]); |
| gl.clear(gl.COLOR_BUFFER_BIT); |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no error."); |
| // The image color at COLOR_ATTACHMENT0 should not be changed. |
| checkTextureValue(fbo_draw, gl.COLOR_ATTACHMENT0, [0, 255, 255, 255]); |
| |
| gl.bindFramebuffer(gl.DRAW_FRAMEBUFFER, fbo_draw); |
| gl.drawBuffers([gl.COLOR_ATTACHMENT0, gl.COLOR_ATTACHMENT1]); |
| gl.clear(gl.COLOR_BUFFER_BIT); |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no error."); |
| // The image color at COLOR_ATTACHMENT0 should be changed. |
| checkTextureValue(fbo_draw, gl.COLOR_ATTACHMENT0, [0, 255, 0, 255]); |
| |
| var data = new Float32Array(color); |
| gl.clearBufferfv(gl.COLOR, 1, data); |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no error."); |
| } |
| |
| function draw() { |
| debug(""); |
| debug("draw to a color buffer which has no image attached"); |
| |
| var program = wtu.setupSimpleColorProgram(gl, 0); |
| gl.uniform4f(gl.getUniformLocation(program, "u_color"), 1, 0, 0, 1); |
| wtu.setupUnitQuad(gl, 0); |
| |
| // Call to drawArrays |
| gl.bindFramebuffer(gl.DRAW_FRAMEBUFFER, fbo_draw); |
| gl.drawBuffers([gl.NONE, gl.COLOR_ATTACHMENT1]); |
| wtu.drawUnitQuad(gl); |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no error."); |
| // The image color at COLOR_ATTACHMENT0 should not be changed. |
| checkTextureValue(fbo_draw, gl.COLOR_ATTACHMENT0, [0, 255, 0, 255]); |
| |
| gl.drawBuffers([gl.COLOR_ATTACHMENT0, gl.COLOR_ATTACHMENT1]); |
| wtu.drawUnitQuad(gl); |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no error."); |
| // The image color at COLOR_ATTACHMENT0 should be changed. |
| checkTextureValue(fbo_draw, gl.COLOR_ATTACHMENT0, [255, 0, 0, 255]); |
| |
| // Call to drawElements |
| gl.uniform4f(gl.getUniformLocation(program, "u_color"), 1, 1, 0, 1); |
| wtu.setupIndexedQuad(gl, 1); |
| gl.drawBuffers([gl.NONE, gl.COLOR_ATTACHMENT1]); |
| wtu.drawIndexedQuad(gl, 1); |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no error."); |
| // The image color at COLOR_ATTACHMENT0 should not be changed. |
| checkTextureValue(fbo_draw, gl.COLOR_ATTACHMENT0, [255, 0, 0, 255]); |
| |
| gl.drawBuffers([gl.COLOR_ATTACHMENT0, gl.COLOR_ATTACHMENT1]); |
| wtu.drawIndexedQuad(gl, 1); |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no error."); |
| // The image color at COLOR_ATTACHMENT0 should be changed. |
| checkTextureValue(fbo_draw, gl.COLOR_ATTACHMENT0, [255, 255, 0, 255]); |
| } |
| |
| function blit() { |
| debug(""); |
| debug("blit color buffer(s) which have no image attached"); |
| // Some or all draw buffers have no image. Read buffer have image. It should be OK. |
| gl.bindFramebuffer(gl.DRAW_FRAMEBUFFER, fbo_draw); |
| gl.bindFramebuffer(gl.READ_FRAMEBUFFER, fbo_read); |
| gl.readBuffer(gl.COLOR_ATTACHMENT0); |
| gl.drawBuffers([gl.NONE, gl.COLOR_ATTACHMENT1]); |
| gl.blitFramebuffer(0, 0, size, size, 0, 0, size, size, gl.COLOR_BUFFER_BIT, gl.NEAREST); |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no error."); |
| // The image color at COLOR_ATTACHMENT0 in draw fbo should not be changed. |
| checkTextureValue(fbo_draw, gl.COLOR_ATTACHMENT0, [255, 255, 0, 255]); |
| |
| gl.bindFramebuffer(gl.DRAW_FRAMEBUFFER, fbo_draw); |
| gl.bindFramebuffer(gl.READ_FRAMEBUFFER, fbo_read); |
| gl.readBuffer(gl.COLOR_ATTACHMENT0); |
| gl.drawBuffers([gl.COLOR_ATTACHMENT0, gl.COLOR_ATTACHMENT1]); |
| gl.blitFramebuffer(0, 0, size, size, 0, 0, size, size, gl.COLOR_BUFFER_BIT, gl.NEAREST); |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no error."); |
| // The image color at COLOR_ATTACHMENT0 in draw fbo should be changed. |
| checkTextureValue(fbo_draw, gl.COLOR_ATTACHMENT0, [0, 255, 255, 255]); |
| |
| // Draw buffer(s) have no image. Read buffer have no image. It should be OK. |
| gl.bindFramebuffer(gl.DRAW_FRAMEBUFFER, fbo_draw); |
| gl.bindFramebuffer(gl.READ_FRAMEBUFFER, fbo_read); |
| gl.readBuffer(gl.COLOR_ATTACHMENT1); |
| gl.drawBuffers([gl.NONE, gl.COLOR_ATTACHMENT1]); |
| gl.blitFramebuffer(0, 0, size, size, 0, 0, size, size, gl.COLOR_BUFFER_BIT, gl.NEAREST); |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no error."); |
| // The image color at COLOR_ATTACHMENT0 in draw fbo should not be changed. |
| checkTextureValue(fbo_draw, gl.COLOR_ATTACHMENT0, [0, 255, 255, 255]); |
| |
| // Read buffer have no image. Some or all draw buffers have image. It should generate INVALID_OPERATION. |
| gl.bindFramebuffer(gl.DRAW_FRAMEBUFFER, fbo_draw); |
| gl.bindFramebuffer(gl.READ_FRAMEBUFFER, fbo_read); |
| gl.readBuffer(gl.COLOR_ATTACHMENT1); |
| gl.drawBuffers([gl.COLOR_ATTACHMENT0]); |
| gl.blitFramebuffer(0, 0, size, size, 0, 0, size, size, gl.COLOR_BUFFER_BIT, gl.NEAREST); |
| wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "Should generate INVALID_OPERATION when read buffer misses image."); |
| // The image color at COLOR_ATTACHMENT0 in draw fbo should not be changed. |
| checkTextureValue(fbo_draw, gl.COLOR_ATTACHMENT0, [0, 255, 255, 255]); |
| |
| gl.bindFramebuffer(gl.DRAW_FRAMEBUFFER, fbo_draw); |
| gl.bindFramebuffer(gl.READ_FRAMEBUFFER, fbo_read); |
| gl.readBuffer(gl.COLOR_ATTACHMENT1); |
| gl.drawBuffers([gl.COLOR_ATTACHMENT0, gl.COLOR_ATTACHMENT1]); |
| gl.blitFramebuffer(0, 0, size, size, 0, 0, size, size, gl.COLOR_BUFFER_BIT, gl.NEAREST); |
| wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "Should generate INVALID_OPERATION when read buffer misses image."); |
| // The image color at COLOR_ATTACHMENT0 in draw fbo should not be changed. |
| checkTextureValue(fbo_draw, gl.COLOR_ATTACHMENT0, [0, 255, 255, 255]); |
| |
| // Depth buffer in read fbo has no image. It should generate INVALID_OPERATION if depth buffer in draw fbo has image. |
| gl.bindFramebuffer(gl.DRAW_FRAMEBUFFER, fbo_draw); |
| gl.bindFramebuffer(gl.READ_FRAMEBUFFER, fbo_read); |
| gl.framebufferTexture2D(gl.DRAW_FRAMEBUFFER, gl.DEPTH_ATTACHMENT, gl.TEXTURE_2D, tex_depth, 0); |
| gl.blitFramebuffer(0, 0, size, size, 0, 0, size, size, gl.DEPTH_BUFFER_BIT, gl.NEAREST); |
| wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "Should generate INVALID_OPERATION when depth buffer misses image."); |
| |
| // Depth buffer in read fbo has no image. It should be OK if depth buffer in draw fbo has no image too. |
| gl.bindFramebuffer(gl.DRAW_FRAMEBUFFER, fbo_draw); |
| gl.bindFramebuffer(gl.READ_FRAMEBUFFER, fbo_read); |
| gl.framebufferTexture2D(gl.DRAW_FRAMEBUFFER, gl.DEPTH_ATTACHMENT, gl.TEXTURE_2D, null, 0); |
| gl.blitFramebuffer(0, 0, size, size, 0, 0, size, size, gl.DEPTH_BUFFER_BIT, gl.NEAREST); |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no error."); |
| // Validate some other parameters as usual |
| gl.blitFramebuffer(0, 0, size, size, 0, 0, size, size, gl.DEPTH_BUFFER_BIT, gl.LINEAR); |
| wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "invalid filter"); |
| |
| // Stencil buffer in read fbo has no image. It should generate INVALID_OPERATION if stencil buffer in draw fbo has image. |
| gl.bindFramebuffer(gl.DRAW_FRAMEBUFFER, fbo_draw); |
| gl.bindFramebuffer(gl.READ_FRAMEBUFFER, fbo_read); |
| gl.framebufferTexture2D(gl.DRAW_FRAMEBUFFER, gl.STENCIL_ATTACHMENT, gl.TEXTURE_2D, tex_stencil, 0); |
| gl.blitFramebuffer(0, 0, size, size, 0, 0, size, size, gl.STENCIL_BUFFER_BIT, gl.NEAREST); |
| wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "Should generate INVALID_OPERATION when stencil buffer misses image."); |
| |
| // Stencil buffer in read fbo has no image. It should be OK if stencil buffer in draw fbo has no image too. |
| gl.bindFramebuffer(gl.DRAW_FRAMEBUFFER, fbo_draw); |
| gl.bindFramebuffer(gl.READ_FRAMEBUFFER, fbo_read); |
| gl.framebufferTexture2D(gl.DRAW_FRAMEBUFFER, gl.STENCIL_ATTACHMENT, gl.TEXTURE_2D, null, 0); |
| gl.blitFramebuffer(0, 0, size, size, 0, 0, size, size, gl.STENCIL_BUFFER_BIT, gl.NEAREST); |
| wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no error."); |
| // Validate some other parameters as usual |
| gl.blitFramebuffer(0, 0, size, size, 0, 0, size, size, gl.STENCIL_BUFFER_BIT, gl.LINEAR); |
| wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION, "invalid filter"); |
| } |
| |
| gl.bindTexture(gl.TEXTURE_2D, null); |
| gl.bindFramebuffer(gl.READ_FRAMEBUFFER, null); |
| gl.bindFramebuffer(gl.DRAW_FRAMEBUFFER, null); |
| gl.deleteTexture(tex_read); |
| gl.deleteTexture(tex_draw); |
| gl.deleteTexture(tex_depth); |
| gl.deleteTexture(tex_stencil); |
| gl.deleteFramebuffer(fbo_read); |
| gl.deleteFramebuffer(fbo_draw); |
| |
| var successfullyParsed = true; |
| </script> |
| <script src="../../js/js-test-post.js"></script> |
| |
| </body> |
| </html> |