[Piglit] [PATCH] Add a new test case used to valid gl_VertexID for bug 87611
Wang, Shuo
shuo.wang at intel.com
Sat Jan 3 21:05:43 PST 2015
Thank you Chris, I just update it to GL_TRIANGLE_STRIP, and send out another version with the subject of " [PATCH] V2. Add a case to valid gl_VertexID for bug 87611"
And, is there any difference between GL_TRIANGLE_FAN and GL_TRIANGLE_STRIP for the SW primitive restart path. Because from the result, both of them work well.
Thanks,
Shuo
-----Original Message-----
From: Chris Forbes [mailto:chrisf at ijw.co.nz]
Sent: Thursday, January 1, 2015 2:53 AM
To: Wang, Shuo
Cc: piglit at lists.freedesktop.org; Romanick, Ian D
Subject: Re: [Piglit] [PATCH] Add a new test case used to valid gl_VertexID for bug 87611
I think it would be worth mentioning that you're using GL_TRIANGLE_FAN specifically to hit the SW primitive restart path.
On Thu, Jan 1, 2015 at 3:24 AM, Wang Shuo <shuo.wang at intel.com> wrote:
> This case is added for *Bug 87611 - Exercise gl_VertexID corner cases
> in i965 driver*, and used to watch the status of *Bug 85529 - Surfaces not drawn in Unvanquished* This case is failed by master, and passed by the patch of vcelestialragev at gmail.com(https://bugs.freedesktop.org/attachment.cgi?id=110839) which is agree by Kenneth Graunke.
> Below is the test point of this case:
> 1. Use user-allocated vertex arrays (NOT vertex buffer objects).
>
> 2. Use a glDrawArrays with a non-zero 'first'.
>
> 3. Use primitive restart to trigger multiple _mesa_prim without an intervening state change.
> For primitive restart test:
> In OpenGL ES, primitive restart do not support glDrawArrays.Below is the spec of OpenGLR ES Version 3.0.1 (January 10, 2013) page26
> When DrawElements,DrawElementsInstanced, or DrawRangeElements transfers a set of generic attribute array elements to the GL,
> if the index within the vertex arrays corresponding to that set is equal to 2N ô€€€ 1, where N is 8, 16 or 32 if the type is
> UNSIGNED_-BYTE, UNSIGNED_SHORT, or UNSIGNED_INT, respectively, then the GL does not process those elements as a vertex.
> For OpenGL, primitive restarting to work with all rendering commands, including the non-indexed commands. However, implementations
> did not implement this, and the rule itself makes no sense.(https://www.opengl.org/wiki/Vertex_Rendering)
> So I used glDrawElements to test primitive restart
>
> 4. Validate the value of gl_VertexID in the vertex shader.
> Both glDrawArrays testing and glDrawElements testing test the
> value of gl_VertexID
>
> Signed-off-by: Wang Shuo <shuo.wang at intel.com>
> ---
> tests/all.py | 1 +
> tests/shaders/CMakeLists.gl.txt | 1 +
> tests/shaders/glsl-bug-87611.c | 196
> ++++++++++++++++++++++++++++++++++++++++
> 3 files changed, 198 insertions(+)
> create mode 100644 tests/shaders/glsl-bug-87611.c
>
> diff --git a/tests/all.py b/tests/all.py index 0d9a971..dd1ae92 100644
> --- a/tests/all.py
> +++ b/tests/all.py
> @@ -386,6 +386,7 @@ add_concurrent_test(shaders,
> 'createshaderprogram-attached-shaders')
> add_concurrent_test(shaders, 'glsl-arb-fragment-coord-conventions')
> add_concurrent_test(shaders,
> 'glsl-arb-fragment-coord-conventions-define')
> add_concurrent_test(shaders, 'glsl-bug-22603')
> +add_concurrent_test(shaders, 'glsl-bug-87611')
> add_concurrent_test(shaders, 'glsl-bindattriblocation')
> add_concurrent_test(shaders, 'glsl-dlist-getattriblocation')
> add_concurrent_test(shaders, 'glsl-getactiveuniform-array-size')
> diff --git a/tests/shaders/CMakeLists.gl.txt
> b/tests/shaders/CMakeLists.gl.txt index c827256..501cad3 100644
> --- a/tests/shaders/CMakeLists.gl.txt
> +++ b/tests/shaders/CMakeLists.gl.txt
> @@ -47,6 +47,7 @@ piglit_add_executable
> (glsl-arb-fragment-coord-conventions glsl-arb-fragment-coo
> piglit_add_executable (glsl-arb-fragment-coord-conventions-define
> glsl-arb-fragment-coord-conventions-define.c)
> piglit_add_executable (glsl-bindattriblocation
> glsl-bindattriblocation.c) piglit_add_executable (glsl-bug-22603
> glsl-bug-22603.c)
> +piglit_add_executable (glsl-bug-87611 glsl-bug-87611.c)
> piglit_add_executable (glsl-dlist-getattriblocation
> glsl-dlist-getattriblocation.c) piglit_add_executable
> (glsl-explicit-location-01 glsl-explicit-location-01.c)
> piglit_add_executable (glsl-explicit-location-02
> glsl-explicit-location-02.c) diff --git
> a/tests/shaders/glsl-bug-87611.c b/tests/shaders/glsl-bug-87611.c new
> file mode 100644 index 0000000..358e45c
> --- /dev/null
> +++ b/tests/shaders/glsl-bug-87611.c
> @@ -0,0 +1,196 @@
> +/*
> + * Copyright © 2009 Intel Corporation
> + * Copyright © 2010 VMware, Inc.
> + *
> + * Permission is hereby granted, free of charge, to any person
> +obtaining a
> + * copy of this software and associated documentation files (the
> +"Software"),
> + * to deal in the Software without restriction, including without
> +limitation
> + * the rights to use, copy, modify, merge, publish, distribute,
> +sublicense,
> + * and/or sell copies of the Software, and to permit persons to whom
> +the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice (including
> +the next
> + * paragraph) shall be included in all copies or substantial portions
> +of the
> + * Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
> +EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
> +MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
> +SHALL
> + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES
> +OR OTHER
> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> +ARISING
> + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> +OTHER
> + * DEALINGS IN THE SOFTWARE.
> + */
> +
> +/**
> + * \file glsl-bug-87611.c
> + *
> + * Check gl_VertexID
> + * This case is added for *Bug 87611 - Exercise gl_VertexID corner
> +cases in i965 driver*,
> + * and used to watch the status of *Bug 85529 - Surfaces not drawn in
> +Unvanquished*
> + * This case is failed by master, and passed by the patch of
> +vcelestialragev at gmail.com(https://bugs.freedesktop.org/attachment.cgi
> +?id=110839)
> + * which is agree by Kenneth Graunke.
> + *
> + *
> + * \author Wang Shuo <shuo.wang at intel.com> */
> +
> +
> +#include "piglit-util-gl.h"
> +
> +PIGLIT_GL_TEST_CONFIG_BEGIN
> +
> + config.supports_gl_compat_version = 10;
> +
> + config.window_visual = PIGLIT_GL_VISUAL_RGB |
> + PIGLIT_GL_VISUAL_DOUBLE;
> +
> +PIGLIT_GL_TEST_CONFIG_END
> +
> +// Validate the value of gl_VertexID in the vertex shader.
> +static const GLchar *vertShaderText =
> + "#version 130\n"
> + "attribute vec4 attrib;\n"
> + "void main()\n"
> + "{\n"
> + " gl_Position = gl_ModelViewProjectionMatrix * attrib;\n"
> + " if (gl_VertexID == 2 || gl_VertexID == 3 || gl_VertexID == 4 || gl_VertexID == 5 )\n"
> + "{ \n"
> + " gl_FrontColor = vec4(0.0, 1.0, 0.0, 1.0);\n"
> + "} \n"
> + " else"
> + "{ \n"
> + " gl_FrontColor = vec4(1.0, 0.0, 0.0, 1.0);\n"
> + "} \n"
> + "} \n";
> +
> +// Validate the value of gl_VertexID in the vertex shader.
> +static const GLchar *vertShaderTextIndex =
> + "#version 130\n"
> + "attribute vec4 attrib;\n"
> + "void main()\n"
> + "{\n"
> + " gl_Position = gl_ModelViewProjectionMatrix * attrib;\n"
> + " if (gl_VertexID == 2 || gl_VertexID == 3 || gl_VertexID == 4 || gl_VertexID == 5 )\n"
> + "{ \n"
> + " gl_FrontColor = vec4(0.0, 1.0, 0.0, 1.0);\n"
> + "} \n"
> + " else"
> + "{ \n"
> + " gl_FrontColor = vec4(1.0, 0.0, 0.0, 1.0);\n"
> + "} \n"
> + "} \n";
> +
> +
> +static const GLfloat Vcoords[6][2] = { {-1, -1}, {-1, -1}, {-1, -1},
> +{1, -1}, {1, 1}, {-1, 1}};
> +
> +static const unsigned short indiceTriangleFan[] =
> + {
> + 2, 0xFFFF, 2, 3, 0xFFFF, 0xFFFF, 2, 3, 4, 5, 0xFFFF, 0xFFFF, 0xFFFF,5
> + };
> +
> +
> +enum piglit_result
> +piglit_display(void)
> +{
> + static const GLfloat expColor[4] = {0, 1, 0, 1};
> + GLint vs, vsIndex;
> + GLint prog, progIndex;
> + GLint attrib_loc, attrib_locIndex;
> + enum piglit_result result, resultIndex;
> +
> + vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vertShaderText);
> + if (vs == 0) {
> + exit(1);
> + }
> +
> + prog = piglit_link_simple_program(vs, 0);
> + if (prog == 0) {
> + exit(1);
> + }
> +
> +
> + glLinkProgram(prog);
> +
> + attrib_loc = glGetAttribLocation(prog, "attrib");
> +
> + glUseProgram(prog);
> +
> + glMatrixMode(GL_PROJECTION);
> + glLoadIdentity();
> + glOrtho(-1.1, 1.1, -1.1, 1.1, -1, 1);
> +
> + glClear(GL_COLOR_BUFFER_BIT);
> +
> + // Use user-allocated vertex arrays (NOT vertex buffer objects).
> + glVertexAttribPointer(attrib_loc, 2, GL_FLOAT, GL_FALSE, 0, Vcoords);
> + glEnableVertexAttribArray(attrib_loc);
> +
> + // Use a glDrawArrays with a non-zero 'first'.
> + glDrawArrays(GL_TRIANGLE_FAN, 2, 4);
> +
> + result = piglit_probe_pixel_rgba(20, 20, expColor)
> + ? PIGLIT_PASS : PIGLIT_FAIL;
> +
> + glDisableVertexAttribArray(attrib_loc);
> +
> + vsIndex = piglit_compile_shader_text(GL_VERTEX_SHADER, vertShaderTextIndex);
> + if (vsIndex == 0) {
> + exit(1);
> + }
> +
> + progIndex = piglit_link_simple_program(vsIndex, 0);
> + if (progIndex == 0) {
> + exit(1);
> + }
> +
> +
> + glLinkProgram(progIndex);
> +
> + /* check that the bind worked */
> + attrib_locIndex = glGetAttribLocation(progIndex, "attrib");
> +
> + /* now draw something and check that it works */
> + glUseProgram(progIndex);
> +
> + glMatrixMode(GL_PROJECTION);
> + glLoadIdentity();
> + glOrtho(-1.1, 1.1, -1.1, 1.1, -1, 1);
> +
> + glClear(GL_COLOR_BUFFER_BIT);
> + // Use primitive restart to trigger multiple _mesa_prim without an intervening state change.
> + // Because for OpenGL ES PRIMITIVE_RESTART only support DrawElements, DrawElementsInstanced, or DrawRangeElements
> + // And for OpenGL PRIMITIVE_RESTART work with all rendering commands, including the non-indexed commands.
> + // However, implementations did not implement this, and the rule itself makes no sense (https://www.opengl.org/wiki/Vertex_Rendering)
> + // So for testing PRIMITIVE_RESTART I used glDrawElements
> + // OpenGL ES spec:When DrawElements,DrawElementsInstanced, or DrawRangeElements transfers a set of generic
> + // attribute array elements to the GL, if the index within the vertex arrays corresponding to that set is
> + // equal to 2N 1, where N is 8, 16 or 32 if the type is UNSIGNED_-BYTE, UNSIGNED_SHORT, or UNSIGNED_INT,
> + // respectively, then the GL does not process those elements as a vertex.
> + glEnable(GL_PRIMITIVE_RESTART_FIXED_INDEX);
> +
> + glVertexAttribPointer(attrib_locIndex, 2, GL_FLOAT, GL_FALSE, 0, Vcoords);
> + glEnableVertexAttribArray(attrib_locIndex);
> +
> + glDrawElements(GL_TRIANGLE_FAN, sizeof(indiceTriangleFan) /
> + sizeof(indiceTriangleFan[0]), GL_UNSIGNED_SHORT, indiceTriangleFan);
> +
> + resultIndex = piglit_probe_pixel_rgba(20, 20, expColor)
> + ? PIGLIT_PASS : PIGLIT_FAIL;
> +
> + if (result == PIGLIT_PASS && resultIndex == PIGLIT_PASS)
> + result = PIGLIT_PASS;
> + else
> + result = PIGLIT_FAIL;
> +
> + piglit_present_results();
> +
> + return result;
> +}
> +
> +
> +void
> +piglit_init(int argc, char **argv)
> +{
> + piglit_require_vertex_shader();
> +
> + piglit_require_gl_version(20);
> + piglit_require_GLSL_version(130); }
> --
> 1.8.3.2
>
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