arb_gpu_shader_fp64: test interleaved transform feedback for doubles

This is based on the interleaved test but adds some doubles
to the mix.

Signed-off-by: Dave Airlie <airlied@redhat.com>

3 files changed, 219 insertions, 0 deletions

diff --git a/tests/all.py b/tests/all.py
index c263e9ad2..8b17bc168 100644
--- a/tests/all.py
+++ b/tests/all.py
@@ -2085,6 +2085,7 @@ with profile.group_manager(
         grouptools.join('spec', 'ARB_gpu_shader_fp64', 'execution')) as g:
      g(['arb_gpu_shader_fp64-tf-separate'])
      g(['arb_gpu_shader_fp64-double-gettransformfeedbackvarying'])
+     g(['arb_gpu_shader_fp64-tf-interleaved'])
 
 with profile.group_manager(
         PiglitGLTest,
diff --git a/tests/spec/arb_gpu_shader_fp64/execution/CMakeLists.gl.txt b/tests/spec/arb_gpu_shader_fp64/execution/CMakeLists.gl.txt
index 68d0b076e..64b9bcf12 100644
--- a/tests/spec/arb_gpu_shader_fp64/execution/CMakeLists.gl.txt
+++ b/tests/spec/arb_gpu_shader_fp64/execution/CMakeLists.gl.txt
@@ -11,4 +11,5 @@ link_libraries (
 )
 
 piglit_add_executable (arb_gpu_shader_fp64-tf-separate tf-separate.c)
+piglit_add_executable (arb_gpu_shader_fp64-tf-interleaved tf-interleaved.c)
 piglit_add_executable (arb_gpu_shader_fp64-double-gettransformfeedbackvarying double-gettransformfeedbackvarying.c)
diff --git a/tests/spec/arb_gpu_shader_fp64/execution/tf-interleaved.c b/tests/spec/arb_gpu_shader_fp64/execution/tf-interleaved.c
new file mode 100644
index 000000000..1520a7d6f
--- /dev/null
+++ b/tests/spec/arb_gpu_shader_fp64/execution/tf-interleaved.c
@@ -0,0 +1,217 @@
+/*
+ * Copyright © 2011 Marek Olšák <maraeo@gmail.com>
+ * 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.
+ */
+
+/**
+ * ARB_gpu_shader_fp64 + EXT_transform_feedback  test.
+ *
+ * Test writing interleaved vertex attribs into a buffer object.
+ * This tests writing some doubles into the buffer.
+ * Note this doesn't test any undefined behaviour, everything is aligned
+ * correctly.
+ * We also hack the expected values array here so we compare a double
+ * to a float just to make the test simpler.
+ */
+
+#include "piglit-util-gl.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+	config.supports_gl_core_version = 32;
+	config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+static const char *vstext = {
+	"#version 150\n"
+	"#extension GL_ARB_gpu_shader_fp64 : require\n"
+	"in vec4 vertex;"
+	"out vec4 color;"
+	"out vec4 tc[2];"
+	"out dvec3 v3;"
+	"out dvec2 v2;"
+	"void main() {"
+	"  gl_Position = vertex;"
+	"  color = vec4(1.0, 0.9, 0.8, 0.7);"
+	"  tc[0] = vec4(0.5);"
+	"  tc[1] = vec4(0.6, 0.0, 0.1, 0.6);"
+	"  v2 = dvec2(0.2lf, 0.7lf);"
+	"  v3 = dvec3(0.55lf, 0.66lf, 0.77lf);"
+	"}"
+};
+
+static const char *varyings[] = {"v3", "color", "v2", "tc[1]"};
+GLuint buf;
+GLuint prog;
+GLuint vao, vbo;
+
+#define NUM_COMPONENTS 18
+#define TOTAL_BUF_COMPONENTS (NUM_COMPONENTS*6)
+
+static uint32_t dbl_components = (0x3f | (0xf << 10));
+void piglit_init(int argc, char **argv)
+{
+	GLuint vs, i;
+	GLint maxcomps;
+	float *ptr;
+
+	/* Check the driver. */
+	piglit_require_transform_feedback();
+	piglit_require_extension("GL_ARB_gpu_shader_fp64");
+
+	glGetIntegerv(GL_MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS_EXT, &maxcomps);
+	if (maxcomps < 18) {
+		fprintf(stderr, "Not enough interleaved components supported by transform feedback.\n");
+		piglit_report_result(PIGLIT_SKIP);
+	}
+
+	/* Create shaders. */
+	vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vstext);
+	prog = glCreateProgram();
+	glAttachShader(prog, vs);
+	glTransformFeedbackVaryings(prog, sizeof(varyings)/sizeof(varyings[0]),
+				    varyings, GL_INTERLEAVED_ATTRIBS_EXT);
+	glLinkProgram(prog);
+	if (!piglit_link_check_status(prog)) {
+		glDeleteProgram(prog);
+		piglit_report_result(PIGLIT_FAIL);
+	}
+
+	/* Set up the transform feedback buffer. */
+	glGenBuffers(1, &buf);
+	glBindBuffer(GL_TRANSFORM_FEEDBACK_BUFFER_EXT, buf);
+	glBufferData(GL_TRANSFORM_FEEDBACK_BUFFER_EXT,
+		     TOTAL_BUF_COMPONENTS*sizeof(float), NULL, GL_STREAM_READ);
+	ptr = glMapBuffer(GL_TRANSFORM_FEEDBACK_BUFFER_EXT, GL_WRITE_ONLY);
+	for (i = 0; i < TOTAL_BUF_COMPONENTS; i++) {
+		ptr[i] = 0.123456;
+	}
+	glUnmapBuffer(GL_TRANSFORM_FEEDBACK_BUFFER_EXT);
+	glBindBufferBase(GL_TRANSFORM_FEEDBACK_BUFFER_EXT, 0, buf);
+
+	if (!piglit_check_gl_error(GL_NO_ERROR))
+		piglit_report_result(PIGLIT_FAIL);
+
+	glClearColor(0.2, 0.2, 0.2, 1.0);
+}
+
+enum piglit_result piglit_display(void)
+{
+	GLboolean pass = GL_TRUE;
+	float *ptr;
+	double *dptr;
+	unsigned i;
+	static const float verts[] = {
+		10, 10,
+		10, 20,
+		20, 20,
+		20, 10
+	};
+	static const unsigned indices[] = {
+		0, 1, 3, 1, 2, 3
+	};
+	static const float expected[] = {
+		0.550000, 0.0, 0.660000, 0.0, 0.770000, 0.0,
+		1.000000, 0.900000, 0.800000, 0.700000,
+		0.200000, 0.0, 0.700000, 0.0,
+		0.600000, 0.000000, 0.100000, 0.600000,
+
+		0.550000, 0.0, 0.660000, 0.0, 0.770000, 0.0,
+		1.000000, 0.900000, 0.800000, 0.700000,
+		0.200000, 0.0, 0.700000, 0.0,
+		0.600000, 0.000000, 0.100000, 0.600000,
+
+		0.550000, 0.0, 0.660000, 0.0, 0.770000, 0.0,
+		1.000000, 0.900000, 0.800000, 0.700000,
+		0.200000, 0.0, 0.700000, 0.0,
+		0.600000, 0.000000, 0.100000, 0.600000,
+
+		0.550000, 0.0, 0.660000, 0.0, 0.770000, 0.0,
+		1.000000, 0.900000, 0.800000, 0.700000,
+		0.200000, 0.0, 0.700000, 0.0,
+		0.600000, 0.000000, 0.100000, 0.600000,
+
+		0.550000, 0.0, 0.660000, 0.0, 0.770000, 0.0,
+		1.000000, 0.900000, 0.800000, 0.700000,
+		0.200000, 0.0, 0.700000, 0.0,
+		0.600000, 0.000000, 0.100000, 0.600000,
+
+		0.550000, 0.0, 0.660000, 0.0, 0.770000, 0.0,
+		1.000000, 0.900000, 0.800000, 0.700000,
+		0.200000, 0.0, 0.700000, 0.0,
+		0.600000, 0.000000, 0.100000, 0.600000
+	};
+
+	glClear(GL_COLOR_BUFFER_BIT);
+
+        glGenVertexArrays(1, &vao);
+        glBindVertexArray(vao);
+
+	glGenBuffers(1, &vbo);
+	glBindBuffer(GL_ARRAY_BUFFER, vbo);
+	glBufferData(GL_ARRAY_BUFFER, sizeof(verts), verts, GL_STATIC_DRAW);
+	glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, (GLvoid const *)0);
+
+	/* Render into TFBO. */
+	glUseProgram(prog);
+	glEnable(GL_RASTERIZER_DISCARD);
+	glBeginTransformFeedback(GL_TRIANGLES);
+	glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, indices);
+	glEndTransformFeedback();
+	glDisable(GL_RASTERIZER_DISCARD);
+
+	if (!piglit_check_gl_error(GL_NO_ERROR))
+		piglit_report_result(PIGLIT_FAIL);
+
+	ptr = glMapBuffer(GL_TRANSFORM_FEEDBACK_BUFFER_EXT, GL_READ_ONLY);
+	dptr = (double *)ptr;
+	for (i = 0; i < TOTAL_BUF_COMPONENTS; i++) {
+		if ((dbl_components) & (1 << (i % NUM_COMPONENTS))) {
+			if ((i % 2) == 0) {
+				if (fabs(dptr[i/2] - expected[i]) > 0.01) {
+					printf("Bufferd[%i]: %f,  Expected: %f\n", i, dptr[i/2], expected[i]);
+					pass = GL_FALSE;
+				} else {
+					printf("Bufferd[%i]: %f,  Expected: %f -- OK\n", i, dptr[i/2], expected[i]);
+				}
+			}
+		} else {
+			//printf("%f, ", ptr[i]); continue;
+			if (fabs(ptr[i] - expected[i]) > 0.01) {
+				printf("Buffer[%i]: %f,  Expected: %f\n", i, ptr[i], expected[i]);
+				pass = GL_FALSE;
+			} else {
+				printf("Buffer[%i]: %f,  Expected: %f -- OK\n", i, ptr[i], expected[i]);
+			}
+		}
+	}
+	//puts("");
+	glUnmapBuffer(GL_TRANSFORM_FEEDBACK_BUFFER_EXT);
+
+	if (!piglit_check_gl_error(GL_NO_ERROR))
+		piglit_report_result(PIGLIT_FAIL);
+
+	piglit_present_results();
+
+	return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}