[Piglit] [PATCH 2/2] Test the "centroid" qualifier inside of interface blocks.
Paul Berry
stereotype441 at gmail.com
Tue Oct 22 21:37:18 CEST 2013
Validated using the NVIDIA proprietary driver for Linux (version
313.18).
---
tests/all.tests | 4 +
tests/spec/glsl-1.50/execution/CMakeLists.gl.txt | 1 +
.../glsl-1.50/execution/interface-block-centroid.c | 282 +++++++++++++++++++++
3 files changed, 287 insertions(+)
create mode 100644 tests/spec/glsl-1.50/execution/interface-block-centroid.c
diff --git a/tests/all.tests b/tests/all.tests
index 9502ead..be28a62 100644
--- a/tests/all.tests
+++ b/tests/all.tests
@@ -983,6 +983,10 @@ spec['glsl-1.50']['gs-emits-too-few-verts'] = concurrent_test('glsl-1.50-gs-emit
spec['glsl-1.50']['gs-end-primitive-optional-with-points-out'] = concurrent_test('glsl-1.50-geometry-end-primitive-optional-with-points-out')
spec['glsl-1.50']['getshaderiv-may-return-GS'] = concurrent_test('glsl-1.50-getshaderiv-may-return-GS')
spec['glsl-1.50']['query-gs-prim-types'] = concurrent_test('glsl-1.50-query-gs-prim-types')
+for subtest in ['unnamed', 'named', 'array']:
+ add_concurrent_test(
+ spec['glsl-1.50'],
+ 'glsl-1.50-interface-block-centroid {0}'.format(subtest))
spec['glsl-3.30'] = Group()
spec['glsl-3.30']['built-in constants'] = concurrent_test('built-in-constants tests/spec/glsl-3.30/minimum-maximums.txt')
diff --git a/tests/spec/glsl-1.50/execution/CMakeLists.gl.txt b/tests/spec/glsl-1.50/execution/CMakeLists.gl.txt
index 693f69a..b739765 100644
--- a/tests/spec/glsl-1.50/execution/CMakeLists.gl.txt
+++ b/tests/spec/glsl-1.50/execution/CMakeLists.gl.txt
@@ -13,3 +13,4 @@ ${OPENGL_glu_LIBRARY}
piglit_add_executable (glsl-1.50-vs-input-arrays vs-input-arrays.c)
piglit_add_executable (glsl-1.50-get-active-attrib-array get-active-attrib-array.c)
piglit_add_executable (glsl-1.50-vs-named-block-no-modify vs-named-block-no-modify.c)
+piglit_add_executable (glsl-1.50-interface-block-centroid interface-block-centroid.c)
diff --git a/tests/spec/glsl-1.50/execution/interface-block-centroid.c b/tests/spec/glsl-1.50/execution/interface-block-centroid.c
new file mode 100644
index 0000000..7425cc8
--- /dev/null
+++ b/tests/spec/glsl-1.50/execution/interface-block-centroid.c
@@ -0,0 +1,282 @@
+/*
+ * Copyright © 2013 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
+ *
+ * Verify that the "centroid" qualifier is properly respected when
+ * used inside an interface block.
+ *
+ * This test operates by comparing varyings declared inside an
+ * interface block with varyings declared outside an interface block.
+ * We assume that the "centroid" qualifier works properly when
+ * declared outside interface blocks, because that is tested by other
+ * piglit tests.
+ *
+ * The test may be run in different modes in order to test:
+ * - an unnamed interface block
+ * - a named interface block (non-array)
+ * - an interface block array
+ */
+
+#include "piglit-util-gl-common.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+ config.supports_gl_compat_version = 32;
+ config.supports_gl_core_version = 32;
+ config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+
+/**
+ * Vertex data. This triangle is deliberately chosen to be at a
+ * skewed angle so that some of its boundary pixels will be <50%
+ * covered (and therefore will have a different value for
+ * centroid-interpolated inputs).
+ */
+const float vertex_data[3][4] = {
+ { -1.0, -1.0, 0.0, 1.0 },
+ { -0.9, 1.0, 0.0, 1.0 },
+ { 1.0, 0.8, 0.0, 1.0 }
+};
+
+
+const char *vs_text_unnamed =
+ "#version 150\n"
+ "in vec4 piglit_vertex;\n"
+ "centroid out float centroid_var;\n"
+ "out float unqualified_var;\n"
+ "out Blk {\n"
+ " centroid float ifc_centroid_var;\n"
+ " float ifc_unqualified_var;\n"
+ "};\n"
+ "void main()\n"
+ "{\n"
+ " gl_Position = piglit_vertex;\n"
+ " float var = float(gl_VertexID);\n"
+ " centroid_var = var;\n"
+ " unqualified_var = var;\n"
+ " ifc_centroid_var = var;\n"
+ " ifc_unqualified_var = var;\n"
+ "}\n";
+
+const char *fs_text_unnamed =
+ "#version 150\n"
+ "centroid in float centroid_var;\n"
+ "in float unqualified_var;\n"
+ "in Blk {\n"
+ " centroid float ifc_centroid_var;\n"
+ " float ifc_unqualified_var;\n"
+ "};\n"
+ "void main()\n"
+ "{\n"
+ " bool ok = true;\n"
+ " if (centroid_var != ifc_centroid_var) ok = false;\n"
+ " if (unqualified_var != ifc_unqualified_var) ok = false;\n"
+ " gl_FragColor = ok ? vec4(0.0, 1.0, 0.0, 1.0)\n"
+ " : vec4(1.0, 0.0, 0.0, 1.0);\n"
+ "}\n";
+
+const char *vs_text_named =
+ "#version 150\n"
+ "in vec4 piglit_vertex;\n"
+ "centroid out float centroid_var;\n"
+ "out float unqualified_var;\n"
+ "out Blk {\n"
+ " centroid float centroid_var;\n"
+ " float unqualified_var;\n"
+ "} ifc;\n"
+ "void main()\n"
+ "{\n"
+ " gl_Position = piglit_vertex;\n"
+ " float var = float(gl_VertexID);\n"
+ " centroid_var = var;\n"
+ " unqualified_var = var;\n"
+ " ifc.centroid_var = var;\n"
+ " ifc.unqualified_var = var;\n"
+ "}\n";
+
+const char *fs_text_named =
+ "#version 150\n"
+ "centroid in float centroid_var;\n"
+ "in float unqualified_var;\n"
+ "in Blk {\n"
+ " centroid float centroid_var;\n"
+ " float unqualified_var;\n"
+ "} ifc;\n"
+ "void main()\n"
+ "{\n"
+ " bool ok = true;\n"
+ " if (centroid_var != ifc.centroid_var) ok = false;\n"
+ " if (unqualified_var != ifc.unqualified_var) ok = false;\n"
+ " gl_FragColor = ok ? vec4(0.0, 1.0, 0.0, 1.0)\n"
+ " : vec4(1.0, 0.0, 0.0, 1.0);\n"
+ "}\n";
+
+const char *vs_text_array =
+ "#version 150\n"
+ "in vec4 piglit_vertex;\n"
+ "centroid out float centroid_var;\n"
+ "out float unqualified_var;\n"
+ "out Blk {\n"
+ " centroid float centroid_var;\n"
+ " float unqualified_var;\n"
+ "} ifc[2];\n"
+ "void main()\n"
+ "{\n"
+ " gl_Position = piglit_vertex;\n"
+ " float var = float(gl_VertexID);\n"
+ " centroid_var = var;\n"
+ " unqualified_var = var;\n"
+ " for (int i = 0; i < 2; i++) {\n"
+ " ifc[i].centroid_var = var;\n"
+ " ifc[i].unqualified_var = var;\n"
+ " }\n"
+ "}\n";
+
+const char *fs_text_array =
+ "#version 150\n"
+ "centroid in float centroid_var;\n"
+ "in float unqualified_var;\n"
+ "in Blk {\n"
+ " centroid float centroid_var;\n"
+ " float unqualified_var;\n"
+ "} ifc[2];\n"
+ "void main()\n"
+ "{\n"
+ " bool ok = true;\n"
+ " for (int i = 0; i < 2; i++) {\n"
+ " if (centroid_var != ifc[i].centroid_var) ok = false;\n"
+ " if (unqualified_var != ifc[i].unqualified_var) ok = false;\n"
+ " }\n"
+ " gl_FragColor = ok ? vec4(0.0, 1.0, 0.0, 1.0)\n"
+ " : vec4(1.0, 0.0, 0.0, 1.0);\n"
+ "}\n";
+
+
+static GLuint prog;
+static GLuint fbo;
+
+
+static void
+print_usage_and_exit(const char *prog_name)
+{
+ printf("Usage: %s <subtest>\n"
+ " where <subtest> is one of:\n"
+ " unnamed: use an unnamed interface block\n"
+ " named: use a named interface block (non-array)\n"
+ " array: use an interface block array\n",
+ prog_name);
+ piglit_report_result(PIGLIT_FAIL);
+}
+
+
+void
+piglit_init(int argc, char **argv)
+{
+ GLuint rb;
+ GLuint vao;
+ GLuint array_buf;
+
+ /* Parse params */
+ if (argc != 2)
+ print_usage_and_exit(argv[0]);
+ if (strcmp(argv[1], "unnamed") == 0) {
+ prog = piglit_build_simple_program(vs_text_unnamed,
+ fs_text_unnamed);
+ } else if (strcmp(argv[1], "named") == 0) {
+ prog = piglit_build_simple_program(vs_text_named,
+ fs_text_named);
+ } else if (strcmp(argv[1], "array") == 0) {
+ prog = piglit_build_simple_program(vs_text_array,
+ fs_text_array);
+ } else {
+ print_usage_and_exit(argv[0]);
+ }
+
+ /* Create the multisampled framebuffer */
+ glGenFramebuffers(1, &fbo);
+ glGenRenderbuffers(1, &rb);
+ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
+ glBindRenderbuffer(GL_RENDERBUFFER, rb);
+ glRenderbufferStorageMultisample(GL_RENDERBUFFER,
+ 4 /* samples */,
+ GL_RGBA8 /* internalformat */,
+ piglit_width, piglit_height);
+ glFramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
+ GL_RENDERBUFFER, rb);
+ if (glCheckFramebufferStatus(GL_DRAW_FRAMEBUFFER)
+ != GL_FRAMEBUFFER_COMPLETE) {
+ printf("Framebuffer incomplete\n");
+ piglit_report_result(PIGLIT_FAIL);
+ }
+
+ if (!piglit_check_gl_error(GL_NO_ERROR))
+ piglit_report_result(PIGLIT_FAIL);
+
+ /* Set up vertex inputs */
+ glGenVertexArrays(1, &vao);
+ glBindVertexArray(vao);
+ glGenBuffers(1, &array_buf);
+ glBindBuffer(GL_ARRAY_BUFFER, array_buf);
+ glBufferData(GL_ARRAY_BUFFER, sizeof(vertex_data), &vertex_data,
+ GL_STATIC_DRAW);
+ glVertexAttribPointer(PIGLIT_ATTRIB_POS, 4, GL_FLOAT, GL_FALSE, 0,
+ NULL);
+ glEnableVertexAttribArray(PIGLIT_ATTRIB_POS);
+}
+
+
+enum piglit_result
+piglit_display(void)
+{
+ const float green[4] = { 0.0, 1.0, 0.0, 1.0 };
+ bool pass = true;
+
+ /* Set up to draw into the multisampled renderbuffer */
+ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
+ glClear(GL_COLOR_BUFFER_BIT);
+ glUseProgram(prog);
+
+ /* Draw a rectangle covering the entire buffer */
+ piglit_draw_rect(-1, -1, 2, 2);
+
+ /* Draw a triangle where some samples are <50% covered */
+ glDrawArrays(GL_TRIANGLES, 0, 3);
+
+ /* Blit to the main window to downsample the image */
+ glBindFramebuffer(GL_READ_FRAMEBUFFER, fbo);
+ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, piglit_winsys_fbo);
+ glBlitFramebuffer(0, 0, piglit_width, piglit_height,
+ 0, 0, piglit_width, piglit_height,
+ GL_COLOR_BUFFER_BIT, GL_NEAREST);
+
+ /* Check that the image is all green */
+ glBindFramebuffer(GL_READ_FRAMEBUFFER, piglit_winsys_fbo);
+ pass = piglit_probe_rect_rgba(0, 0, piglit_width, piglit_height,
+ green) && pass;
+
+ piglit_present_results();
+ return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
--
1.8.4.1
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