Create an FBO with two color attachments: one integer, the other
unorm/float. Use a fragment shader to write to both buffers and
probe the results.
Also, test the value of querying GL_RGBA_INTEGER_MODE_EXT. It should
be true whenever at least one attachment is integer.
v2: fix some GL error checks, per Anuj.
Add missing glDrawBuffers() call to map FS outputs to renderbuffers.
---
tests/all.py | 2 +
tests/spec/gl-3.1/CMakeLists.gl.txt | 1 +
tests/spec/gl-3.1/mixed-int-float-fbo.c | 223 ++++++++++++++++++++++++++++++++
3 files changed, 226 insertions(+)
create mode 100644 tests/spec/gl-3.1/mixed-int-float-fbo.c
diff --git a/tests/all.py b/tests/all.py
index 096d4fd..15b80a6 100644
--- a/tests/all.py
+++ b/tests/all.py
@@ -1185,6 +1185,8 @@ with profile.group_manager(
g(['gl-3.1-genned-names'], 'genned-names')
g(['gl-3.1-link-empty-prog-core'])
g(['gl-3.1-minmax'], 'minmax')
+ g(['gl-3-1-mixed-int-float-fbo'])
+ g(['gl-3-1-mixed-int-float-fbo', 'int_second'])
g(['gl-3.1-vao-broken-attrib'], 'vao-broken-attrib')
g(['gl-3.0-required-renderbuffer-attachment-formats', '31'],
'required-renderbuffer-attachment-formats')
diff --git a/tests/spec/gl-3.1/CMakeLists.gl.txt
b/tests/spec/gl-3.1/CMakeLists.gl.txt
index 5cb9b47..4302936 100644
--- a/tests/spec/gl-3.1/CMakeLists.gl.txt
+++ b/tests/spec/gl-3.1/CMakeLists.gl.txt
@@ -16,5 +16,6 @@ piglit_add_executable (gl-3.1-link-empty-prog-core
glsl-link-empty-prog.c)
piglit_add_executable (gl-3.1-minmax minmax.c)
piglit_add_executable (gl-3.1-primitive-restart-xfb primitive-restart-xfb.c)
piglit_add_executable (gl-3.1-vao-broken-attrib vao-broken-attrib.c)
+piglit_add_executable (gl-3.1-mixed-int-float-fbo mixed-int-float-fbo.c)
# vim: ft=cmake:
diff --git a/tests/spec/gl-3.1/mixed-int-float-fbo.c
b/tests/spec/gl-3.1/mixed-int-float-fbo.c
new file mode 100644
index 0000000..53d8b55
--- /dev/null
+++ b/tests/spec/gl-3.1/mixed-int-float-fbo.c
@@ -0,0 +1,223 @@
+/*
+ * Copyright (c) 2016 VMware, Inc.
+ *
+ * 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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
+ * NON-INFRINGEMENT. IN NO EVENT SHALL VMWARE AND/OR THEIR SUPPLIERS
+ * 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.
+ */
+
+/**
+ * Test mixed integer/float FBO.
+ *
+ * If the argument 'int_second' is given the 0th color attachment will
+ * be a unorm texture and the 1st color attachment will be an integer texture.
+ * Otherwise, the 0th color attachment will be integer and the 1st color
+ * attachment will be unorm.
+ */
+
+#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_TEST_CONFIG_END
+
+static const char *vs_text =
+ "#version 150\n"
+ "in vec4 vertex;\n"
+ "void main() \n"
+ "{ \n"
+ " gl_Position = vertex; \n"
+ "} \n";
+
+static const char *fs_text =
+ "#version 150\n"
+ "out ivec4 outputInt;\n"
+ "out vec4 outputFloat;\n"
+ "void main() \n"
+ "{ \n"
+ " outputInt = ivec4(1, 2, 3, 4); \n"
+ " outputFloat = vec4(0.25, 0.5, 0.75, 1.0); \n"
+ "} \n";
+
+const int width = 128, height = 128;
+bool int_output_first = true;
+
+
+static GLuint
+create_program(void)
+{
+ GLuint program = piglit_build_simple_program(vs_text, fs_text);
+ if (int_output_first) {
+ glBindFragDataLocation(program, 0, "outputInt");
+ glBindFragDataLocation(program, 1, "outputFloat");
+ }
+ else {
+ glBindFragDataLocation(program, 0, "outputFloat");
+ glBindFragDataLocation(program, 1, "outputInt");
+ }
+
+ glLinkProgram(program);
+ if (!piglit_link_check_status(program))
+ piglit_report_result(PIGLIT_FAIL);
+
+ piglit_check_gl_error(GL_NO_ERROR);
+
+ return program;
+}
+
+
+static GLuint
+create_fbo(void)
+{
+ GLuint intTex, unormTex, fbo;
+
+ glGenTextures(1, &intTex);
+ glBindTexture(GL_TEXTURE_2D, intTex);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8UI, width, height, 0,
+ GL_RGBA_INTEGER, GL_UNSIGNED_BYTE, NULL);
+
+ glGenTextures(1, &unormTex);
+ glBindTexture(GL_TEXTURE_2D, unormTex);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0,
+ GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+
+ glGenFramebuffers(1, &fbo);
+ glBindFramebuffer(GL_FRAMEBUFFER, fbo);
+ if (int_output_first) {
+ glFramebufferTexture2D(GL_FRAMEBUFFER,
+ GL_COLOR_ATTACHMENT0_EXT,
+ GL_TEXTURE_2D, intTex, 0);
+ glFramebufferTexture2D(GL_FRAMEBUFFER,
+ GL_COLOR_ATTACHMENT1_EXT,
+ GL_TEXTURE_2D, unormTex, 0);
+ }
+ else {
+ glFramebufferTexture2D(GL_FRAMEBUFFER,
+ GL_COLOR_ATTACHMENT0_EXT,
+ GL_TEXTURE_2D, unormTex, 0);
+ glFramebufferTexture2D(GL_FRAMEBUFFER,
+ GL_COLOR_ATTACHMENT1_EXT,
+ GL_TEXTURE_2D, intTex, 0);
+ }
+
+ GLenum status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
+ if (status != GL_FRAMEBUFFER_COMPLETE) {
+ printf("Mixed int/float FBO is incomplete. Skipping test.\n");
+ piglit_report_result(PIGLIT_SKIP);
+ }
+
+ static const GLenum draw_bufs[2] = {
+ GL_COLOR_ATTACHMENT0,
+ GL_COLOR_ATTACHMENT1
+ };
+ glDrawBuffers(2, draw_bufs);
+
+ if (!piglit_check_gl_error(GL_NO_ERROR)) {
+ printf("Test setup failed\n");
+ piglit_report_result(PIGLIT_SKIP);
+ }
+
+ return fbo;
+}
+
+
+enum piglit_result
+piglit_display(void)
+{
+ const int int_clear[4] = { 99, 99, 99, 99 };
+ const float float_clear[4] = { 0.33, 0.33, 0.33, 0.33 };
+
+ if (int_output_first) {
+ glClearBufferiv(GL_COLOR, 0, int_clear);
+ glClearBufferfv(GL_COLOR, 1, float_clear);
+ }
+ else {
+ glClearBufferfv(GL_COLOR, 0, float_clear);
+ glClearBufferiv(GL_COLOR, 1, int_clear);
+ }
+
+ piglit_draw_rect(-1, -1, 2, 2);
+
+ bool pass = true;
+
+ /* check the int target */
+ if (int_output_first) {
+ glReadBuffer(GL_COLOR_ATTACHMENT0);
+ }
+ else {
+ glReadBuffer(GL_COLOR_ATTACHMENT1);
+ }
+ const int expected_int[4] = {1, 2, 3, 4};
+ if (!piglit_probe_rect_rgba_int(0, 0, width, height, expected_int)) {
+ printf("Failed probing integer color buffer on"
+ " GL_COLOR_ATTACHMENT%d.\n",
+ (int) !int_output_first);
+ pass = false;
+ }
+
+ /* check the unorm target */
+ if (int_output_first) {
+ glReadBuffer(GL_COLOR_ATTACHMENT1);
+ }
+ else {
+ glReadBuffer(GL_COLOR_ATTACHMENT0);
+ }
+ const float expected_unorm[4] = {0.25, 0.5, 0.75, 1.0};
+ if (!piglit_probe_rect_rgba(0, 0, width, height, expected_unorm)) {
+ printf("Failed probing unorm color buffer on"
+ " GL_COLOR_ATTACHMENT%d.\n",
+ (int) int_output_first);
+ pass = false;
+ }
+
+ if (piglit_is_extension_supported("GL_EXT_texture_integer")) {
+ /* This query is only part of the extension, not core GL */
+ GLboolean intMode = 0;
+ glGetBooleanv(GL_RGBA_INTEGER_MODE_EXT, &intMode);
+ if (!intMode) {
+ printf("GL_RGBA_INTEGER_MODE_EXT incorrectly"
+ " returned false.\n");
+ pass = false;
+ }
+ }
+
+ pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
+
+ return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+
+void
+piglit_init(int argc, char **argv)
+{
+ if (argc > 1 && strcmp(argv[1], "int_second") == 0) {
+ int_output_first = false;
+ }
+
+ GLuint fbo = create_fbo();
+ GLuint program = create_program();
+
+ glBindFramebuffer(GL_FRAMEBUFFER, fbo);
+ glUseProgram(program);
+}
--
1.9.1
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