[Piglit] [PATCH] Add tests for GL_ARB_shader_draw_parameters
Kristian Høgsberg
hoegsberg at gmail.com
Wed Dec 16 16:17:30 PST 2015
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
+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;
+}
--
2.5.0
More information about the Piglit
mailing list