From: Dave Airlie <airl...@redhat.com>
This is based of a CTS test
GL41-CTS.viewport_array.draw_mulitple_viewports_with_single_invocation
It currently passes on Haswell, but appears to fail on radeonsi/r600
---
tests/spec/arb_viewport_array/CMakeLists.gl.txt | 1 +
tests/spec/arb_viewport_array/render_viewport_2.c | 163 ++++++++++++++++++++++
2 files changed, 164 insertions(+)
create mode 100644 tests/spec/arb_viewport_array/render_viewport_2.c
diff --git a/tests/spec/arb_viewport_array/CMakeLists.gl.txt
b/tests/spec/arb_viewport_array/CMakeLists.gl.txt
index 3b8124f..8571577 100644
--- a/tests/spec/arb_viewport_array/CMakeLists.gl.txt
+++ b/tests/spec/arb_viewport_array/CMakeLists.gl.txt
@@ -17,6 +17,7 @@ piglit_add_executable(arb_viewport_array-bounds bounds.c)
piglit_add_executable(arb_viewport_array-queries queries.c)
piglit_add_executable(arb_viewport_array-minmax minmax.c)
piglit_add_executable(arb_viewport_array-render-viewport render_viewport.c)
+piglit_add_executable(arb_viewport_array-render-viewport-2 render_viewport_2.c)
piglit_add_executable(arb_viewport_array-render-depthrange render_depthrange.c)
piglit_add_executable(arb_viewport_array-render-scissor render_scissor.c)
diff --git a/tests/spec/arb_viewport_array/render_viewport_2.c
b/tests/spec/arb_viewport_array/render_viewport_2.c
new file mode 100644
index 0000000..310a3ba
--- /dev/null
+++ b/tests/spec/arb_viewport_array/render_viewport_2.c
@@ -0,0 +1,163 @@
+/*
+ * Copyright © 2015 Red Hat.
+ *
+ * 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.
+ *
+ */
+
+/**
+ * Tests rendering into a single framebuffer surface with multiple viewports
+ * via a geometry shader.
+ * This test is inspired by a CTS test.
+ * For one point, the geom shader emits a triangle strip with a colorx
+ * pre invocation. The viewports then should get one shade of red lighter.
+ */
+#include "piglit-util-gl.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
+
+const char *vsSource = {
+ "#version 150\n"
+ "void main() {\n"
+ "}\n"
+};
+
+const char *gsSource = {
+ "#version 150\n"
+ "#extension GL_ARB_gpu_shader5 : enable\n"
+ "#extension GL_ARB_viewport_array : enable\n"
+ "layout(points, invocations = 16) in;\n"
+ "layout(triangle_strip, max_vertices = 4) out;\n"
+ " flat out int gs_fs_color;\n"
+ "\n"
+ "void main()\n"
+ "{\n"
+ " gs_fs_color = gl_InvocationID;\n"
+ " gl_ViewportIndex = gl_InvocationID;\n"
+ " gl_Position = vec4(-1, -1, 0, 1);\n"
+ " EmitVertex();\n"
+ " gs_fs_color = gl_InvocationID;\n"
+ " gl_ViewportIndex = gl_InvocationID;\n"
+ " gl_Position = vec4(-1, 1, 0, 1);\n"
+ " EmitVertex();\n"
+ " gs_fs_color = gl_InvocationID;\n"
+ " gl_ViewportIndex = gl_InvocationID;\n"
+ " gl_Position = vec4(1, -1, 0, 1);\n"
+ " EmitVertex();\n"
+ " gs_fs_color = gl_InvocationID;\n"
+ " gl_ViewportIndex = gl_InvocationID;\n"
+ " gl_Position = vec4(1, 1, 0, 1);\n"
+ " EmitVertex();\n"
+ "}\n"
+};
+
+const char *fsSource = {
+ "#version 150\n"
+ "flat in int gs_fs_color;\n"
+ "uniform vec3 color;\n"
+ "void main() {\n"
+ " gl_FragColor = vec4(1.0 / float(gs_fs_color + 1), 0.0, 0.0,
1.0);\n"
+ "}\n"
+};
+
+static bool
+draw_multi_viewport(void)
+{
+ bool pass = true;
+ int i, j;
+ const int divX=4, divY=4;
+ GLfloat w = (GLfloat) piglit_width / (GLfloat) divX;
+ GLfloat h = (GLfloat) piglit_height / (GLfloat) divY;
+ GLfloat data[16 * 4 /* 4x4 * (x + y + w + h) */];
+ int idx;
+ int p;
+
+ idx = 0;
+ for (i = 0; i < divX; i++) {
+ for (j = 0; j < divY; j++) {
+ data[idx * 4 + 0] = (GLfloat)(i * w);
+ data[idx * 4 + 1] = (GLfloat)(j * h);
+ data[idx * 4 + 2] = w;
+ data[idx * 4 + 3] = h;
+ idx++;
+ }
+ }
+ glViewport(0, 0, piglit_width, piglit_height); /* for glClear() */
+ glClear(GL_COLOR_BUFFER_BIT);
+ glViewportArrayv(0, 16, data);
+
+ glDrawArrays(GL_POINTS, 0, 1);
+ pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
+
+ for (i = 0; i < divX; i++) {
+ for (j = 0; j < divY; j++) {
+ GLfloat expected[4];
+ expected[0] = 1.0 / (1 + i*4 + j);
+ expected[1] = 0.0;
+ expected[2] = 0.0;
+ p = piglit_probe_pixel_rgb(i * w + w/2, j * h + h /2,
+ expected);
+ if (!p) {
+ printf("Wrong color for viewport i,j %d %d\n",
+ i, j);
+ pass = false;
+ }
+ }
+ }
+
+ piglit_present_results();
+
+ return pass;
+}
+
+enum piglit_result
+piglit_display(void)
+{
+ bool pass = true;
+
+ pass = draw_multi_viewport();
+ pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
+ return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+ GLuint program;
+ GLuint vao;
+ piglit_require_extension("GL_ARB_viewport_array");
+
+ program = piglit_build_simple_program_multiple_shaders(
+ GL_VERTEX_SHADER, vsSource,
+ GL_GEOMETRY_SHADER, gsSource,
+ GL_FRAGMENT_SHADER, fsSource,
+ 0);
+ glUseProgram(program);
+
+ glGenVertexArrays(1, &vao);
+ glBindVertexArray(vao);
+}
--
2.4.3
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