[Piglit] [PATCH] Add tests for GL_ARB_shader_draw_parameters
Serge Martin
edb+piglit at sigluy.net
Thu Dec 17 01:36:19 PST 2015
On Wednesday 16 December 2015 16:17:30 Kristian Høgsberg wrote:
> From: Kristian Høgsberg Kristensen <kristian.h.kristensen at intel.com>
>
> ---
>
> v2: Fix copy-paste error in drawid-indirect-vertexid case.
>
> tests/all.py | 15 ++
> tests/spec/CMakeLists.txt | 1 +
> .../arb_shader_draw_parameters/CMakeLists.gl.txt | 14 ++
> .../spec/arb_shader_draw_parameters/CMakeLists.txt | 1 +
> tests/spec/arb_shader_draw_parameters/basevertex.c | 176 +++++++++++++++++
> .../arb_shader_draw_parameters/drawid-indirect.c | 216
> +++++++++++++++++++++ tests/spec/arb_shader_draw_parameters/drawid.c |
> 173 +++++++++++++++++ 7 files changed, 596 insertions(+)
> create mode 100644 tests/spec/arb_shader_draw_parameters/CMakeLists.gl.txt
> create mode 100644 tests/spec/arb_shader_draw_parameters/CMakeLists.txt
> create mode 100644 tests/spec/arb_shader_draw_parameters/basevertex.c
> create mode 100644 tests/spec/arb_shader_draw_parameters/drawid-indirect.c
> create mode 100644 tests/spec/arb_shader_draw_parameters/drawid.c
>
> diff --git a/tests/all.py b/tests/all.py
> index f61ff15..39cffbb 100644
> --- a/tests/all.py
> +++ b/tests/all.py
> @@ -4552,5 +4552,20 @@ with profile.group_manager(
> for sample_count in (str(x) for x in MSAA_SAMPLE_COUNTS):
> g(['ext_shader_samples_identical', sample_count])
>
> +# Group ARR_shader_draw_parameters
# Group ARB_shader_draw_parameters
> +with profile.group_manager(
> + PiglitGLTest,
> + grouptools.join('spec', 'ARB_shader_draw_parameters')) as g:
> + g(['arb_shader_draw_parameters-drawid', 'drawid'], 'drawid')
> + g(['arb_shader_draw_parameters-drawid', 'vertexid'], 'drawid-vertexid')
> + g(['arb_shader_draw_parameters-basevertex', 'basevertex'],
> 'basevertex') + g(['arb_shader_draw_parameters-basevertex',
> 'baseinstance'], 'baseinstance') +
> g(['arb_shader_draw_parameters-basevertex', 'basevertex-baseinstance'],
> 'basevertex-baseinstance') + g(['arb_shader_draw_parameters-basevertex',
> 'vertexid-zerobased'], 'vertexid-zerobased') +
> g(['arb_shader_draw_parameters-drawid-indirect', 'drawid'],
> 'drawid-indirect') + g(['arb_shader_draw_parameters-drawid-indirect',
> 'basevertex'], 'drawid-indirect-basevertex') +
> g(['arb_shader_draw_parameters-drawid-indirect', 'baseinstance'],
> 'drawid-indirect-baseinstance') +
> g(['arb_shader_draw_parameters-drawid-indirect', 'vertexid'],
> 'drawid-indirect-vertexid') +
> if platform.system() is 'Windows':
> profile.filter_tests(lambda p, _: not p.startswith('glx'))
> diff --git a/tests/spec/CMakeLists.txt b/tests/spec/CMakeLists.txt
> index 57ac541..b499cd8 100644
> --- a/tests/spec/CMakeLists.txt
> +++ b/tests/spec/CMakeLists.txt
> @@ -139,3 +139,4 @@ add_subdirectory (ext_framebuffer_blit)
> add_subdirectory (mesa_pack_invert)
> add_subdirectory (ext_texture_format_bgra8888)
> add_subdirectory (oes_draw_elements_base_vertex)
> +add_subdirectory (arb_shader_draw_parameters)
> diff --git a/tests/spec/arb_shader_draw_parameters/CMakeLists.gl.txt
> b/tests/spec/arb_shader_draw_parameters/CMakeLists.gl.txt new file mode
> 100644
> index 0000000..f711e2c
> --- /dev/null
> +++ b/tests/spec/arb_shader_draw_parameters/CMakeLists.gl.txt
> @@ -0,0 +1,14 @@
> +include_directories(
> + ${GLEXT_INCLUDE_DIR}
> + ${OPENGL_INCLUDE_PATH}
> + ${piglit_SOURCE_DIR}/tests/mesa/util
> +)
> +
> +link_libraries (
> + piglitutil_${piglit_target_api}
> + ${OPENGL_gl_LIBRARY}
> +)
> +
> +piglit_add_executable (arb_shader_draw_parameters-basevertex basevertex.c)
> +piglit_add_executable (arb_shader_draw_parameters-drawid drawid.c)
> +piglit_add_executable (arb_shader_draw_parameters-drawid-indirect
> drawid-indirect.c) diff --git
> a/tests/spec/arb_shader_draw_parameters/CMakeLists.txt
> b/tests/spec/arb_shader_draw_parameters/CMakeLists.txt new file mode 100644
> index 0000000..144a306
> --- /dev/null
> +++ b/tests/spec/arb_shader_draw_parameters/CMakeLists.txt
> @@ -0,0 +1 @@
> +piglit_include_target_api()
> diff --git a/tests/spec/arb_shader_draw_parameters/basevertex.c
> b/tests/spec/arb_shader_draw_parameters/basevertex.c new file mode 100644
> index 0000000..343c38c
> --- /dev/null
> +++ b/tests/spec/arb_shader_draw_parameters/basevertex.c
> @@ -0,0 +1,176 @@
> +/*
> + * Copyright © 2015 Intel Corporation
> + *
> + * 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 basevertex.c
> + *
> + * Test that gl_BaseVertexARB has the correct values. Draw left side
> + * of window with a non-base-vertex draw call to verify
> + * gl_BaseVertexARB is 0 in that case, then draw other half with base
> + * vertex 4 and verifies that that works.
> + */
> +
> +#include "piglit-util-gl.h"
> +
> +PIGLIT_GL_TEST_CONFIG_BEGIN
> +
> + config.supports_gl_core_version = 31;
> + config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
> +
> +PIGLIT_GL_TEST_CONFIG_END
> +
> +static const char vs_template[] =
> + "#version 330\n"
> + "#extension GL_ARB_shader_draw_parameters: require\n"
> + "\n"
> + "layout(location = 0) in vec2 pos;\n"
> + "layout(location = 1) in ivec4 ref;\n"
> + "out vec4 color;\n"
> + "\n"
> + "void main()\n"
> + "{\n"
> + " gl_Position = vec4(pos, 0.0, 1.0);\n"
> + " if (%s)\n"
> + " color = vec4(0, 1, 0, 1);\n"
> + " else\n"
> + " color = vec4(1, 0, 0, 1);\n"
> + "}\n";
> +
> +static const char fs_text[] =
> + "#version 130\n"
> + "\n"
> + "in vec4 color;\n"
> + "\n"
> + "void main()\n"
> + "{\n"
> + " gl_FragColor = color;\n"
> + "}\n";
> +
> +void
> +piglit_init(int argc, char **argv)
> +{
> + GLuint prog;
> + char *vs_text;
> +
> + if (strcmp(argv[1], "basevertex") == 0) {
> + asprintf(&vs_text, vs_template,
> + "ref.x == gl_BaseVertexARB");
> + } else if (strcmp(argv[1], "baseinstance") == 0) {
> + asprintf(&vs_text, vs_template,
> + "ref.y == gl_BaseInstanceARB");
> + } else if (strcmp(argv[1], "basevertex-baseinstance") == 0) {
> + asprintf(&vs_text, vs_template,
> + "ref.xy == ivec2(gl_BaseVertexARB, gl_BaseInstanceARB)");
> + } else if (strcmp(argv[1], "vertexid-zerobased") == 0) {
> + asprintf(&vs_text, vs_template,
> + "ref.z == gl_VertexID - gl_BaseVertexARB");
> + } else {
> + printf("Unknown subtest: %s\n", argv[1]);
> + piglit_report_result(PIGLIT_FAIL);
> + }
> +
> + piglit_require_GLSL_version(130);
> +
> + piglit_require_extension("GL_ARB_shader_draw_parameters");
> + piglit_require_extension("GL_ARB_base_instance");
> +
> + prog = piglit_build_simple_program(vs_text, fs_text);
> +
> + glUseProgram(prog);
> +}
> +
> +enum piglit_result
> +piglit_display()
> +{
> + bool pass;
> +
> + static const float vertex_array[16] = {
> + -1, -1,
> + 0, -1,
> + 0, 1,
> + -1, 1,
> +
> + 0, -1,
> + 1, -1,
> + 1, 1,
> + 0, 1,
> + };
> +
> + static const int reference_array[32] = {
> + 0, 0, 0, 0,
> + 0, 0, 1, 0,
> + 0, 0, 2, 0,
> + 0, 0, 3, 0,
> + 4, 7, 0, 0,
> + 4, 7, 1, 0,
> + 4, 7, 2, 0,
> + 4, 7, 3, 0,
> + };
> +
> + const int indices[6] = {
> + 0, 1, 2,
> + 0, 2, 3,
> + };
> +
> + float green[] = { 0, 1, 0, 1 };
> +
> + GLuint vao, vbo;
> + glGenVertexArrays(1, &vao);
> + glBindVertexArray(vao);
> +
> + glGenBuffers(1, &vbo);
> + glBindBuffer(GL_ARRAY_BUFFER, vbo);
> + glBufferData(GL_ARRAY_BUFFER, 2048, NULL, GL_STATIC_DRAW);
> +
> + glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(GLfloat), 0);
> + glVertexAttribIPointer(1, 4, GL_UNSIGNED_INT, 4 * sizeof(int), (void *)
> 1024); +
> + /* Enable the attributes */
> + glEnableVertexAttribArray(0);
> + glEnableVertexAttribArray(1);
> +
> + glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(vertex_array), vertex_array);
> + glBufferSubData(GL_ARRAY_BUFFER, 1024, sizeof(reference_array),
> reference_array); +
> + glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, indices);
> +
> + /* We use this monster to draw the right half of the
> + * window. Base vertex so that we can reuse the indices to
> + * draw with vertices and colors 4-7, base instance so that we
> + * can verify that the value presented in the shader is
> + * correct. We only draw one instance so the only effect of
> + * instancing is that gl_BaseInstanceARB is 7.
> + */
> + glDrawElementsInstancedBaseVertexBaseInstance(GL_TRIANGLES, 6,
> + GL_UNSIGNED_INT,
> + indices, 1,
> + 4, /* basevertex */
> + 7 /* baseinstance */);
> +
> + pass = piglit_probe_rect_rgba(0, 0, piglit_width, piglit_height,
> + green);
> +
> + piglit_present_results();
> +
> + return pass ? PIGLIT_PASS : PIGLIT_FAIL;
> +}
> diff --git a/tests/spec/arb_shader_draw_parameters/drawid-indirect.c
> b/tests/spec/arb_shader_draw_parameters/drawid-indirect.c new file mode
> 100644
> index 0000000..839b271
> --- /dev/null
> +++ b/tests/spec/arb_shader_draw_parameters/drawid-indirect.c
> @@ -0,0 +1,216 @@
> +/*
> + * Copyright © 2015 Intel Corporation
> + *
> + * 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 drawid.c
> + *
> + * Test for gl_DrawIDARB with indirect multi-draw. For mesa, this is
> + * interesting because this is the only mode where we actually get
> + * multiple _mesa_prim into the backend in one call. This tests that
> + * we properly reemit state to update gl_DrawIDARB between rendering,
> + * which on i965 involves reemitting vertex buffer state.
> + *
> + * Also, on i965, we source the vertex and instance ID from an
> + * internal vertex buffer for direct rdraw, but point the vertex
> + * buffer the parameter buffer for indirect draws. The baseinstance
> + * subtest verifies that this all works right. Conversely, the
> + * vertexid subtest doesn't reference gl_DrawIDARB and is useful for
> + * validating that we don't reemit vertex buffer state between multi
> + * draw calls. We can't test for that with this test, of course, but
> + * we can inspect the generate command stream from the driver.
> + */
> +
> +#include "piglit-util-gl.h"
> +
> +PIGLIT_GL_TEST_CONFIG_BEGIN
> +
> + config.supports_gl_core_version = 31;
> + config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
> +
> +PIGLIT_GL_TEST_CONFIG_END
> +
> +static const char vs_template[] =
> + "#version 330\n"
> + "#extension GL_ARB_shader_draw_parameters: require\n"
> + "\n"
> + "layout(location = 0) in vec2 pos;\n"
> + "layout(location = 1) in ivec4 ref;\n"
> + "out vec4 color;\n"
> + "\n"
> + "void main()\n"
> + "{\n"
> + " gl_Position = vec4(pos, 0.0, 1.0);\n"
> + " if (%s)\n"
> + " color = vec4(0, 1, 0, 1);\n"
> + " else\n"
> + " color = vec4(1, 0, 0, 1);\n"
> + "}\n";
> +
> +static const char fs_text[] =
> + "#version 130\n"
> + "\n"
> + "in vec4 color;\n"
> + "\n"
> + "void main()\n"
> + "{\n"
> + " gl_FragColor = color;\n"
> + "}\n";
> +
> +void
> +piglit_init(int argc, char **argv)
> +{
> + GLuint prog;
> + char *vs_text;
> +
> + if (strcmp(argv[1], "drawid") == 0) {
> + asprintf(&vs_text, vs_template,
> + "ref.x == gl_DrawIDARB");
> + } else if (strcmp(argv[1], "basevertex") == 0) {
> + asprintf(&vs_text, vs_template,
> + "ref.xy == ivec2(gl_DrawIDARB, gl_BaseVertexARB)");
> + } else if (strcmp(argv[1], "baseinstance") == 0) {
> + asprintf(&vs_text, vs_template,
> + "ref.xz == ivec2(gl_DrawIDARB, gl_BaseInstanceARB)");
> + } else if (strcmp(argv[1], "vertexid") == 0) {
> + asprintf(&vs_text, vs_template,
> + "ref.w == gl_VertexID");
> + } else {
> + printf("Unknown subtest: %s\n", argv[1]);
> + piglit_report_result(PIGLIT_FAIL);
> + }
> +
> + piglit_require_GLSL_version(130);
> +
> + piglit_require_extension("GL_ARB_shader_draw_parameters");
> + piglit_require_extension("GL_ARB_base_instance");
> +
> + prog = piglit_build_simple_program(vs_text, fs_text);
> +
> + glUseProgram(prog);
> +}
> +
> +struct cmd {
> + uint count;
> + uint instanceCount;
> + uint firstIndex;
> + uint baseVertex;
> + uint baseInstance;
> +};
> +
> +enum piglit_result
> +piglit_display()
> +{
> + bool pass;
> +
> + struct {
> + float vertex_array[16];
> + int reference_array[32];
> + int indices[6];
> + } geometry = {
> + .vertex_array = {
> + -1, -1,
> + 0, -1,
> + 0, 1,
> + -1, 1,
> +
> + 0, -1,
> + 1, -1,
> + 1, 1,
> + 0, 1,
> + },
> + .reference_array = {
> + 0, 0, 0, 0,
> + 0, 0, 0, 1,
> + 0, 0, 0, 2,
> + 0, 0, 0, 3,
> +
> + 1, 4, 7, 4,
> + 1, 4, 7, 5,
> + 1, 4, 7, 6,
> + 1, 4, 7, 7,
> + }
> + };
> +
> + const int indices[12] = {
> + 0, 1, 2,
> + 0, 2, 3,
> + };
> +
> + float green[] = {0, 1, 0, 1};
> +
> + GLuint vao, vbo, ibo, dbo;
> + glGenVertexArrays(1, &vao);
> + glBindVertexArray(vao);
> +
> + glGenBuffers(1, &vbo);
> + glBindBuffer(GL_ARRAY_BUFFER, vbo);
> + glBufferData(GL_ARRAY_BUFFER, sizeof(geometry), &geometry,
> GL_STATIC_DRAW); +
> + glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE,
> + 2 * sizeof(GLfloat),
> + (void *) ((char *) &geometry.vertex_array - (char *)
&geometry));
> +
> + glVertexAttribIPointer(1, 4, GL_UNSIGNED_INT,
> + 4 * sizeof(int),
> + (void *) ((char *) &geometry.reference_array - (char *)
> &geometry)); +
> + /* Enable the attributes */
> + glEnableVertexAttribArray(0);
> + glEnableVertexAttribArray(1);
> +
> + glGenBuffers(1, &ibo);
> + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ibo);
> + glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices,
> GL_STATIC_DRAW); +
> + struct cmd cmds[] = {
> + {
> + .count = 6,
> + .instanceCount = 1,
> + .firstIndex = 0,
> + .baseVertex = 0,
> + .baseInstance = 0
> + },
> + {
> + .count = 6,
> + .instanceCount = 1,
> + .firstIndex = 0,
> + .baseVertex = 4,
> + .baseInstance = 7
> + }
> + };
> +
> + glGenBuffers(1, &dbo);
> + glBindBuffer(GL_DRAW_INDIRECT_BUFFER, dbo);
> + glBufferData(GL_DRAW_INDIRECT_BUFFER, sizeof(cmds), cmds, GL_STATIC_DRAW);
> +
> + glMultiDrawElementsIndirect(GL_TRIANGLES,
> + GL_UNSIGNED_INT,
> + 0, 2, 0);
> +
> + pass = piglit_probe_rect_rgba(0, 0, piglit_width, piglit_height,
> + green);
> +
> + piglit_present_results();
> +
> + return pass ? PIGLIT_PASS : PIGLIT_FAIL;
> +}
> diff --git a/tests/spec/arb_shader_draw_parameters/drawid.c
> b/tests/spec/arb_shader_draw_parameters/drawid.c new file mode 100644
> index 0000000..8e79998
> --- /dev/null
> +++ b/tests/spec/arb_shader_draw_parameters/drawid.c
> @@ -0,0 +1,173 @@
> +/*
> + * Copyright © 2015 Intel Corporation
> + *
> + * 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 drawid.c
> + *
> + * Basic test for gl_DrawIDARB.
> + */
> +
> +#include "piglit-util-gl.h"
> +
> +PIGLIT_GL_TEST_CONFIG_BEGIN
> +
> + config.supports_gl_core_version = 31;
> + config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
> +
> +PIGLIT_GL_TEST_CONFIG_END
> +
> +static const char vs_template[] =
> + "#version 330\n"
> + "#extension GL_ARB_shader_draw_parameters: require\n"
> + "\n"
> + "/* This is floating point so we can use immediate mode */\n"
> + "layout(location = 0) in vec2 pos;\n"
> + "layout(location = 1) in ivec2 ref;\n"
> + "out vec4 color;\n"
> + "\n"
> + "void main()\n"
> + "{\n"
> + " gl_Position = vec4(pos, 0.0, 1.0);\n"
> + " if (%s)\n"
> + " color = vec4(0, 1, 0, 1);\n"
> + " else\n"
> + " color = vec4(1, 0, 0, 1);\n"
> + "}\n";
> +
> +static const char fs_text[] =
> + "#version 130\n"
> + "\n"
> + "in vec4 color;\n"
> + "\n"
> + "void main()\n"
> + "{\n"
> + " gl_FragColor = color;\n"
> + "}\n";
> +
> +void
> +piglit_init(int argc, char **argv)
> +{
> + GLuint prog;
> + char *vs_text;
> +
> + if (strcmp(argv[1], "drawid") == 0) {
> + asprintf(&vs_text, vs_template,
> + "ref.x == gl_DrawIDARB");
> + } else if (strcmp(argv[1], "vertexid") == 0) {
> + asprintf(&vs_text, vs_template,
> + "ref.x == gl_DrawIDARB && ref.y == gl_VertexID");
> + } else {
> + printf("Unknown subtest: %s\n", argv[1]);
> + piglit_report_result(PIGLIT_FAIL);
> + }
> +
> + piglit_require_GLSL_version(130);
> +
> + piglit_require_extension("GL_ARB_shader_draw_parameters");
> + piglit_require_extension("GL_ARB_base_instance");
> +
> + prog = piglit_build_simple_program(vs_text, fs_text);
> +
> + glUseProgram(prog);
> +}
> +
> +enum piglit_result
> +piglit_display()
> +{
> + bool pass;
> +
> + struct {
> + float vertex_array[16];
> + int reference_array[16];
> + int indices[6];
> + } geometry = {
> + .vertex_array = {
> + -1, -1,
> + 0, -1,
> + 0, 1,
> + -1, 1,
> +
> + 0, -1,
> + 1, -1,
> + 1, 1,
> + 0, 1,
> + },
> + .reference_array = {
> + 0, 0,
> + 0, 1,
> + 0, 2,
> + 0, 3,
> +
> + 1, 4,
> + 1, 5,
> + 1, 6,
> + 1, 7,
> + }
> + };
> +
> + const int indices[12] = {
> + 0, 1, 2,
> + 0, 2, 3,
> +
> + 4, 5, 6,
> + 4, 6, 7,
> + };
> +
> + float green[] = {0, 1, 0, 1};
> +
> + GLuint vao, vbo;
> + glGenVertexArrays(1, &vao);
> + glBindVertexArray(vao);
> +
> + glGenBuffers(1, &vbo);
> + glBindBuffer(GL_ARRAY_BUFFER, vbo);
> + glBufferData(GL_ARRAY_BUFFER, sizeof(geometry), &geometry,
> GL_STATIC_DRAW); +
> + glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE,
> + 2 * sizeof(GLfloat),
> + (void *) ((char *) &geometry.vertex_array - (char *)
&geometry));
> +
> + glVertexAttribIPointer(1, 2, GL_UNSIGNED_INT,
> + 2 * sizeof(int),
> + (void *) ((char *) &geometry.reference_array - (char *)
> &geometry)); +
> + /* Enable the attributes */
> + glEnableVertexAttribArray(0);
> + glEnableVertexAttribArray(1);
> +
> + GLsizei counts[2] = { 6, 6 };
> + const int *indices_array[2] = { &indices[0], &indices[6] };
> +
> + glMultiDrawElements(GL_TRIANGLES,
> + counts,
> + GL_UNSIGNED_INT,
> + (const void **) indices_array,
> + 2);
> +
> + pass = piglit_probe_rect_rgba(0, 0, piglit_width, piglit_height,
> + green);
> +
> + piglit_present_results();
> +
> + return pass ? PIGLIT_PASS : PIGLIT_FAIL;
> +}
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