ARB_gpu_shader5 requires a minimum of 4 vertex streams. This allows a geometry shader to output vertices independently to up to 4 streams.
Signed-off-by: Jordan Justen <[email protected]> --- tests/all.py | 1 + .../arb_gpu_shader5/execution/CMakeLists.gl.txt | 1 + tests/spec/arb_gpu_shader5/execution/xfb-streams.c | 269 +++++++++++++++++++++ 3 files changed, 271 insertions(+) create mode 100644 tests/spec/arb_gpu_shader5/execution/xfb-streams.c diff --git a/tests/all.py b/tests/all.py index b8d0edb..e705b83 100644 --- a/tests/all.py +++ b/tests/all.py @@ -1731,6 +1731,7 @@ for stage in ['vs', 'fs']: arb_gpu_shader5[testname] = concurrent_test(cmd) add_concurrent_test(arb_gpu_shader5, 'arb_gpu_shader5-minmax') add_concurrent_test(arb_gpu_shader5, 'arb_gpu_shader5-invocation-id') +add_concurrent_test(arb_gpu_shader5, 'arb_gpu_shader5-xfb-streams') arb_texture_query_levels = Group() spec['ARB_texture_query_levels'] = arb_texture_query_levels diff --git a/tests/spec/arb_gpu_shader5/execution/CMakeLists.gl.txt b/tests/spec/arb_gpu_shader5/execution/CMakeLists.gl.txt index aa0ea20..18e9ad8 100644 --- a/tests/spec/arb_gpu_shader5/execution/CMakeLists.gl.txt +++ b/tests/spec/arb_gpu_shader5/execution/CMakeLists.gl.txt @@ -10,3 +10,4 @@ link_libraries ( ) piglit_add_executable (arb_gpu_shader5-invocation-id invocation-id.c) +piglit_add_executable (arb_gpu_shader5-xfb-streams xfb-streams.c) diff --git a/tests/spec/arb_gpu_shader5/execution/xfb-streams.c b/tests/spec/arb_gpu_shader5/execution/xfb-streams.c new file mode 100644 index 0000000..67163df --- /dev/null +++ b/tests/spec/arb_gpu_shader5/execution/xfb-streams.c @@ -0,0 +1,269 @@ +/* + * Copyright (c) 2014 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. + */ + +#include "piglit-util-gl-common.h" + +/** + * @file xfb-streams.c + * + * This test uses geometry shader multiple stream support from + * GL_ARB_gpu_shader5 and GL_ARB_transform_feedback3 to capture + * transform feedback from 4 streams into 4 buffers. (GL_ARB_gpu_shader5 + * requires support for 4 GS streams.) + */ + +PIGLIT_GL_TEST_CONFIG_BEGIN + + config.supports_gl_compat_version = 32; + config.supports_gl_core_version = 32; + +PIGLIT_GL_TEST_CONFIG_END + +static const char vs_pass_thru_text[] = + "#version 150\n" + "void main() {\n" + " gl_Position = vec4(0.0);\n" + "}\n"; + +static const char gs_tmpl[] = + "#version 150\n" + "#extension GL_ARB_gpu_shader5 : enable\n" + "layout(points, invocations = %d) in;\n" + "layout(points, max_vertices = 4) out;\n" + "out float stream0_0_out;\n" + "layout(stream = 1) out vec2 stream1_0_out;\n" + "layout(stream = 2) out float stream2_0_out;\n" + "layout(stream = 3) out vec3 stream3_0_out;\n" + "layout(stream = 1) out vec3 stream1_1_out;\n" + "layout(stream = 2) out vec4 stream2_1_out;\n" + "void main() {\n" + " gl_Position = gl_in[0].gl_Position;\n" + + " stream0_0_out = 1.0 + gl_InvocationID;\n" + " EmitVertex();\n" + " EndPrimitive();\n" + + " stream3_0_out = vec3(12.0 + gl_InvocationID, 13.0 + gl_InvocationID,\n" + " 14.0 + gl_InvocationID);\n" + " EmitStreamVertex(3);\n" + " EndStreamPrimitive(3);\n" + + " stream2_0_out = 7.0 + gl_InvocationID;\n" + " stream2_1_out = vec4(8.0 + gl_InvocationID, 9.0 + gl_InvocationID,\n" + " 10.0 + gl_InvocationID, 11.0 + gl_InvocationID);\n" + " EmitStreamVertex(2);\n" + " EndStreamPrimitive(2);\n" + + " stream1_0_out = vec2(2.0 + gl_InvocationID, 3.0 + gl_InvocationID);\n" + " stream1_1_out = vec3(4.0 + gl_InvocationID, 5.0 + gl_InvocationID,\n" + " 6.0 + gl_InvocationID);\n" + " EmitStreamVertex(1);\n" + " EndStreamPrimitive(1);\n" + "}"; + +const char *stream_names[] = { "first", "second", "third", "forth" }; +int stream_float_counts[] = { 1, 5, 5, 3 }; + +#define STREAMS ARRAY_SIZE(stream_names) + +static const char *varyings[] = { + "stream0_0_out", "gl_NextBuffer", + "stream1_0_out", "stream1_1_out", "gl_NextBuffer", + "stream2_0_out", "stream2_1_out", "gl_NextBuffer", + "stream3_0_out" +}; + +static void +build_and_use_program(GLint gs_invocation_n) +{ + GLuint prog; + + char *gs_text; + + asprintf(&gs_text, gs_tmpl, gs_invocation_n); + prog = piglit_build_simple_program_multiple_shaders( + GL_VERTEX_SHADER, vs_pass_thru_text, + GL_GEOMETRY_SHADER, gs_text, 0); + free(gs_text); + + glTransformFeedbackVaryings(prog, ARRAY_SIZE(varyings), varyings, + GL_INTERLEAVED_ATTRIBS); + + glLinkProgram(prog); + if (!piglit_link_check_status(prog)) + piglit_report_result(PIGLIT_FAIL); + if (!piglit_check_gl_error(GL_NO_ERROR)) + piglit_report_result(PIGLIT_FAIL); + + glUseProgram(prog); +} + +static bool +probe_buffers(const GLuint *xfb, const GLuint *queries, unsigned primitive_n) +{ + bool pass; + unsigned i; + GLuint query_result; + float *expected[STREAMS]; + int expected_n[STREAMS]; + + for (i = 0; i < STREAMS; i++) { + expected_n[i] = stream_float_counts[i] * primitive_n; + } + + for (i = 0; i < STREAMS; i++) { + glGetQueryObjectuiv(queries[i], GL_QUERY_RESULT, &query_result); + if (query_result != primitive_n) { + printf("Expected %u primitives written, got %u\n", + primitive_n, query_result); + piglit_report_result(PIGLIT_FAIL); + } + glGetQueryObjectuiv(queries[STREAMS+i], GL_QUERY_RESULT, &query_result); + if (query_result != primitive_n) { + printf("Expected %u primitives generated, got %u\n", + primitive_n, query_result); + piglit_report_result(PIGLIT_FAIL); + } + } + + for (i = 0; i < STREAMS; i++) { + expected[i] = malloc(expected_n[i] * sizeof(float)); + } + + for (i = 0; i < primitive_n; ++i) { + expected[0][i * stream_float_counts[0] + 0] = i + 1.0; /* stream0_0 */ + + expected[1][i * stream_float_counts[1] + 0] = i + 2.0; /* stream1_0[0] */ + expected[1][i * stream_float_counts[1] + 1] = i + 3.0; /* stream1_0[1] */ + expected[1][i * stream_float_counts[1] + 2] = i + 4.0; /* stream1_1[0] */ + expected[1][i * stream_float_counts[1] + 3] = i + 5.0; /* stream1_1[1] */ + expected[1][i * stream_float_counts[1] + 4] = i + 6.0; /* stream1_1[2] */ + + expected[2][i * stream_float_counts[2] + 0] = i + 7.0; /* stream2_0 */ + expected[2][i * stream_float_counts[2] + 1] = i + 8.0; /* stream2_1[0] */ + expected[2][i * stream_float_counts[2] + 2] = i + 9.0; /* stream2_1[1] */ + expected[2][i * stream_float_counts[2] + 3] = i + 10.0; /* stream2_1[2] */ + expected[2][i * stream_float_counts[2] + 4] = i + 11.0; /* stream2_1[3] */ + + expected[3][i * stream_float_counts[3] + 0] = i + 12.0; /* stream3_0[0] */ + expected[3][i * stream_float_counts[3] + 1] = i + 13.0; /* stream3_0[1] */ + expected[3][i * stream_float_counts[3] + 2] = i + 14.0; /* stream3_0[2] */ + } + + for (i = 0; i < STREAMS; ++i) { + char *name; + asprintf(&name, "stream%d", i); + pass = piglit_probe_buffer(xfb[i], GL_TRANSFORM_FEEDBACK_BUFFER, + name, 1, expected_n[i], expected[i]); + free(name); + } + + for (i = 0; i < STREAMS; i++) { + free(expected[i]); + } + + return pass; +} + +void +piglit_init(int argc, char **argv) +{ + bool pass; + unsigned primitive_n; + GLint gs_invocation_n; + GLuint queries[2*STREAMS]; + GLuint xfb[STREAMS]; + GLuint vao; + unsigned i; + + piglit_require_extension("GL_ARB_gpu_shader5"); + piglit_require_extension("GL_ARB_transform_feedback3"); + + glGetIntegerv(GL_MAX_GEOMETRY_SHADER_INVOCATIONS, &gs_invocation_n); + if (!piglit_check_gl_error(GL_NO_ERROR)) + piglit_report_result(PIGLIT_FAIL); + + if (gs_invocation_n <= 0) { + printf("Maximum amount of geometry shader invocations " + "needs to be positive (%u).\n", gs_invocation_n); + piglit_report_result(PIGLIT_FAIL); + } + + primitive_n = gs_invocation_n; + + build_and_use_program(gs_invocation_n); + + /* Set up the transform feedback buffers. */ + glGenBuffers(ARRAY_SIZE(xfb), xfb); + for (i = 0; i < ARRAY_SIZE(xfb); i++) { + unsigned float_n = primitive_n * stream_float_counts[i]; + glBindBufferBase(GL_TRANSFORM_FEEDBACK_BUFFER, i, xfb[i]); + glBufferData(GL_TRANSFORM_FEEDBACK_BUFFER, + float_n * sizeof(float), NULL, + GL_STREAM_READ); + } + + /* Test only records using transform feedback. */ + glEnable(GL_RASTERIZER_DISCARD); + + if (!piglit_check_gl_error(GL_NO_ERROR)) + piglit_report_result(PIGLIT_FAIL); + + glGenQueries(ARRAY_SIZE(queries), queries); + for (i = 0; i < STREAMS; i++) { + glBeginQueryIndexed(GL_PRIMITIVES_GENERATED, i, queries[i]); + glBeginQueryIndexed(GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN, + i, queries[STREAMS + i]); + } + + glGenVertexArrays(1, &vao); + glBindVertexArray(vao); + + /* Draw and record */ + glBeginTransformFeedback(GL_POINTS); + glDrawArrays(GL_POINTS, 0, 1); + for (i = 0; i < STREAMS; i++) { + glEndQueryIndexed(GL_PRIMITIVES_GENERATED, i); + glEndQueryIndexed(GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN, + i); + } + glEndTransformFeedback(); + glDeleteVertexArrays(1, &vao); + + if (!piglit_check_gl_error(GL_NO_ERROR)) + piglit_report_result(PIGLIT_FAIL); + + pass = probe_buffers(xfb, queries, primitive_n); + + glDeleteBuffers(ARRAY_SIZE(xfb), xfb); + glDeleteQueries(ARRAY_SIZE(queries), queries); + + piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL); +} + +enum piglit_result +piglit_display(void) +{ + /* Should never be reached */ + return PIGLIT_FAIL; +} -- 1.8.5.3 _______________________________________________ Piglit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/piglit
