[Piglit] [PATCH] Add an SSO test which mix-and-matches TCS/TES with different interfaces.
Kenneth Graunke
kenneth at whitecape.org
Mon Dec 21 20:12:46 PST 2015
On i965, the TCS writes a memory location which the TES reads. Both
shader stages need to agree upon the layout. With SSO, this is tricky,
as OpenGL allows developers to freely mix-and-match separate TCS and TES
programs that have never been linked together.
To test this, we compile two TCS programs with different outputs, and
create SSO pipelines that use them with the same TES. A layout
determined by the TES alone would not suffice, so this ensures that
the layout is updated when the TCS changes.
Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
---
.../arb_separate_shader_objects/CMakeLists.gl.txt | 1 +
.../mix-and-match-tcs-tes.c | 209 +++++++++++++++++++++
2 files changed, 210 insertions(+)
create mode 100644 tests/spec/arb_separate_shader_objects/mix-and-match-tcs-tes.c
Passes with Nouveau on NVE4. Initially fails on i965, but passes with my new
Mesa patches to handle this case correctly.
diff --git a/tests/spec/arb_separate_shader_objects/CMakeLists.gl.txt b/tests/spec/arb_separate_shader_objects/CMakeLists.gl.txt
index 3a55130..234d58d 100644
--- a/tests/spec/arb_separate_shader_objects/CMakeLists.gl.txt
+++ b/tests/spec/arb_separate_shader_objects/CMakeLists.gl.txt
@@ -15,6 +15,7 @@ piglit_add_executable (arb_separate_shader_object-compat-builtins compat-builtin
piglit_add_executable (arb_separate_shader_object-GetProgramPipelineiv GetProgramPipelineiv.c)
piglit_add_executable (arb_separate_shader_object-IsProgramPipeline IsProgramPipeline.c)
piglit_add_executable (arb_separate_shader_object-mixed_explicit_and_non_explicit_locations mixed_explicit_and_non_explicit_locations.c sso-common.c)
+piglit_add_executable (arb_separate_shader_object-mix-and-match-tcs-tes mix-and-match-tcs-tes.c)
piglit_add_executable (arb_separate_shader_object-ProgramUniform-coverage ProgramUniform-coverage.c)
piglit_add_executable (arb_separate_shader_object-rendezvous_by_location rendezvous_by_location.c sso-common.c)
piglit_add_executable (arb_separate_shader_object-rendezvous_by_location-3-stages rendezvous_by_location-3-stages.c)
diff --git a/tests/spec/arb_separate_shader_objects/mix-and-match-tcs-tes.c b/tests/spec/arb_separate_shader_objects/mix-and-match-tcs-tes.c
new file mode 100644
index 0000000..6e0643e
--- /dev/null
+++ b/tests/spec/arb_separate_shader_objects/mix-and-match-tcs-tes.c
@@ -0,0 +1,209 @@
+/*
+ * 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.
+ */
+
+/**
+ * This program tests SSO pipelines where the TCS and TES are not linked
+ * together, but specified in separate shaders. In particular, this means
+ * that the GLSL linker won't know the interface between the TCS and TES.
+ *
+ * We compile two TCS programs. Both are largely the same, but the second
+ * has extra unused outputs, which means the two pipelines have a different
+ * number of per-patch outputs. At least on i965, this requires a re-layout
+ * of the TCS/TES interface.
+ *
+ * The output is a single green square, but drawn in two halves, each with
+ * a different SSO pipeline.
+ */
+
+#include "piglit-util-gl.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+ config.supports_gl_compat_version = 0;
+ config.supports_gl_core_version = 32;
+ config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+static GLuint pipeline[2];
+
+static const char *vs_code =
+ "#version 150\n"
+ "#extension GL_ARB_separate_shader_objects: require\n"
+ "in vec4 piglit_vertex;"
+ "void main()\n"
+ "{\n"
+ " gl_Position = piglit_vertex;\n"
+ "}\n"
+ ;
+
+#define TCS(vars, extra_code) \
+ "#version 150\n" \
+ "#extension GL_ARB_separate_shader_objects: require\n" \
+ "#extension GL_ARB_tessellation_shader: require\n" \
+ "layout(vertices = 3) out;\n" \
+ "\n" \
+ vars \
+ "\n" \
+ "void main()\n" \
+ "{\n" \
+ " gl_out[gl_InvocationID].gl_Position = \n" \
+ " gl_in[gl_InvocationID].gl_Position;\n" \
+ " gl_TessLevelOuter = float[4](1.0, 1.0, 1.0, 1.0);\n" \
+ " gl_TessLevelInner = float[2](0.0, 0.0);\n" \
+ " patch_color = vec4(0.0, 1.0, 0.0, 1.0);\n" \
+ extra_code \
+ "}\n"
+
+static const char *tcs0_code =
+ TCS("layout(location = 1) patch out vec4 patch_color;\n", "");
+static const char *tcs1_code =
+ TCS("layout(location = 0) patch out vec4 foo;\n"
+ "layout(location = 1) patch out vec4 patch_color;\n"
+ "layout(location = 2) patch out vec4 bar;\n",
+
+ " foo = vec4(0);\n"
+ " bar = vec4(0);\n");
+
+static const char *tes_code =
+ "#version 150\n"
+ "#extension GL_ARB_separate_shader_objects: require\n"
+ "#extension GL_ARB_tessellation_shader: require\n"
+ "layout(triangles) in;\n"
+ "\n"
+ "layout(location = 1) patch in vec4 patch_color;\n"
+ "layout(location = 0) out vec4 color;\n"
+ "\n"
+ "void main()\n"
+ "{\n"
+ " color = patch_color;\n"
+ " gl_Position = gl_in[0].gl_Position * gl_TessCoord[0]\n"
+ " + gl_in[1].gl_Position * gl_TessCoord[1]\n"
+ " + gl_in[2].gl_Position * gl_TessCoord[2];\n"
+ "}\n"
+ ;
+
+static const char *fs_code =
+ "#version 150\n"
+ "#extension GL_ARB_separate_shader_objects: require\n"
+ "\n"
+ "layout(location = 0) in vec4 color;"
+ "out vec4 out_color;"
+ "\n"
+ "void main()\n"
+ "{\n"
+ " out_color = color;\n"
+ "}\n"
+ ;
+
+enum piglit_result
+piglit_display(void)
+{
+ static const float expected[] = { 0, 1, 0, 1 };
+ bool pass;
+
+ glClearColor(0.1f, 0.1f, 0.1f, 0.1f);
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ /* Draw the left half using the first pipeline */
+ glBindProgramPipeline(pipeline[0]);
+ glViewport(0, 0, piglit_width / 2, piglit_height);
+ glDrawArrays(GL_PATCHES, 0, 6);
+
+ /* Draw the right half using the second pipeline */
+ glBindProgramPipeline(pipeline[1]);
+ glViewport(piglit_width / 2, 0, piglit_width / 2, piglit_height);
+ glDrawArrays(GL_PATCHES, 0, 6);
+
+ /* The result should be a green square filling the whole viewport. */
+ pass = piglit_probe_rect_rgba(0, 0, piglit_width, piglit_height,
+ expected);
+
+ piglit_present_results();
+ return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+void piglit_init(int argc, char **argv)
+{
+ GLuint vs_prog, tcs0_prog, tcs1_prog, tes_prog, fs_prog;
+ GLuint vao, buf;
+ static const float verts[] = {
+ -1.0, -1.0,
+ 1.0, -1.0,
+ -1.0, 1.0,
+ -1.0, 1.0,
+ 1.0, -1.0,
+ 1.0, 1.0
+ };
+
+ piglit_require_extension("GL_ARB_separate_shader_objects");
+ piglit_require_extension("GL_ARB_tessellation_shader");
+
+ vs_prog = glCreateShaderProgramv(GL_VERTEX_SHADER, 1,
+ (const GLchar *const*)&vs_code);
+ piglit_link_check_status(vs_prog);
+
+ tcs0_prog = glCreateShaderProgramv(GL_TESS_CONTROL_SHADER, 1,
+ (const GLchar *const *)&tcs0_code);
+ piglit_link_check_status(tcs0_prog);
+
+ tcs1_prog = glCreateShaderProgramv(GL_TESS_CONTROL_SHADER, 1,
+ (const GLchar *const *)&tcs1_code);
+ piglit_link_check_status(tcs1_prog);
+
+ tes_prog = glCreateShaderProgramv(GL_TESS_EVALUATION_SHADER, 1,
+ (const GLchar *const *)&tes_code);
+ piglit_link_check_status(tes_prog);
+
+ fs_prog = glCreateShaderProgramv(GL_FRAGMENT_SHADER, 1,
+ (const GLchar *const *)&fs_code);
+ piglit_link_check_status(fs_prog);
+
+ glGenProgramPipelines(2, pipeline);
+ glUseProgramStages(pipeline[0], GL_VERTEX_SHADER_BIT, vs_prog);
+ glUseProgramStages(pipeline[0], GL_TESS_CONTROL_SHADER_BIT, tcs0_prog);
+ glUseProgramStages(pipeline[0], GL_TESS_EVALUATION_SHADER_BIT, tes_prog);
+ glUseProgramStages(pipeline[0], GL_FRAGMENT_SHADER_BIT, fs_prog);
+ piglit_program_pipeline_check_status(pipeline[0]);
+
+ glUseProgramStages(pipeline[1], GL_VERTEX_SHADER_BIT, vs_prog);
+ glUseProgramStages(pipeline[1], GL_TESS_CONTROL_SHADER_BIT, tcs1_prog);
+ glUseProgramStages(pipeline[1], GL_TESS_EVALUATION_SHADER_BIT, tes_prog);
+ glUseProgramStages(pipeline[1], GL_FRAGMENT_SHADER_BIT, fs_prog);
+ piglit_program_pipeline_check_status(pipeline[1]);
+
+ /* Set up the VAOs/VBOs for drawing rectangles using the approach
+ * from spec/arb_tessellation_shader/execution/sanity.shader_test.
+ */
+ glGenVertexArrays(1, &vao);
+ glBindVertexArray(vao);
+ glGenBuffers(1, &buf);
+ glBindBuffer(GL_ARRAY_BUFFER, buf);
+ glBufferData(GL_ARRAY_BUFFER, sizeof(verts), verts, GL_STATIC_DRAW);
+ glVertexAttribPointer(PIGLIT_ATTRIB_POS, 2, GL_FLOAT, GL_FALSE, 0, 0);
+ glEnableVertexAttribArray(PIGLIT_ATTRIB_POS);
+ glPatchParameteri(GL_PATCH_VERTICES, 3);
+
+ if (!piglit_check_gl_error(0))
+ piglit_report_result(PIGLIT_FAIL);
+}
--
2.6.4
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