[Piglit] [PATCH 3/3] arb_texture_barrier: copy existing NV_texture_barrier test

[Ilia Mirkin]

Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
---
 tests/all.py                                       |   4 +
 tests/spec/nv_texture_barrier/CMakeLists.gl.txt    |   1 +
 .../nv_texture_barrier/blending-in-shader-arb.c    | 118 +++++++++++++++++++++
 3 files changed, 123 insertions(+)
 create mode 100644 tests/spec/nv_texture_barrier/blending-in-shader-arb.c

diff --git a/tests/all.py b/tests/all.py
index 2d00684..4defb7b 100644
--- a/tests/all.py
+++ b/tests/all.py
@@ -3266,6 +3266,10 @@ nv_texture_barrier = {}
 spec['NV_texture_barrier'] = nv_texture_barrier
 add_plain_test(nv_texture_barrier, 'blending-in-shader')
 
+arb_texture_barrier = {}
+spec['ARB_texture_barrier'] = arb_texture_barrier
+add_plain_test(arb_texture_barrier, 'blending-in-shader-arb')
+
 nv_conditional_render = {}
 spec['NV_conditional_render'] = nv_conditional_render
 nv_conditional_render['begin-while-active'] = concurrent_test('nv_conditional_render-begin-while-active')
diff --git a/tests/spec/nv_texture_barrier/CMakeLists.gl.txt b/tests/spec/nv_texture_barrier/CMakeLists.gl.txt
index 760a0d7..b35d026 100644
--- a/tests/spec/nv_texture_barrier/CMakeLists.gl.txt
+++ b/tests/spec/nv_texture_barrier/CMakeLists.gl.txt
@@ -10,5 +10,6 @@ link_libraries (
 )
 
 piglit_add_executable (blending-in-shader blending-in-shader.c)
+piglit_add_executable (blending-in-shader-arb blending-in-shader-arb.c)
 
 # vim: ft=cmake:
diff --git a/tests/spec/nv_texture_barrier/blending-in-shader-arb.c b/tests/spec/nv_texture_barrier/blending-in-shader-arb.c
new file mode 100644
index 0000000..c0c3db8
--- /dev/null
+++ b/tests/spec/nv_texture_barrier/blending-in-shader-arb.c
@@ -0,0 +1,118 @@
+/*
+ * Copyright © 2011 Marek Olšák
+ *
+ * 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 blending-in-shader-arb.c
+ *
+ * Test programmable blending with GL_ARB_texture_barrier.
+ */
+
+#include "piglit-util-gl.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+	config.supports_gl_compat_version = 10;
+	config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+static GLuint tex, fbo, prog, texloc;
+static float tex_data[16*16*4], res_data[16*16*4];
+
+static const char *fstext = {
+	"uniform sampler2D fb;"
+	"void main() {"
+	"  gl_FragColor = sqrt(texture2D(fb, gl_FragCoord.xy / 16.0));"
+	"}"
+};
+
+#define PASSES 3
+
+enum piglit_result piglit_display(void)
+{
+	GLboolean pass = GL_TRUE;
+	int i;
+
+	glBindTexture(GL_TEXTURE_2D, tex);
+	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 16, 16, 0, GL_RGBA, GL_FLOAT, tex_data);
+	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo);
+	glViewport(0, 0, 16, 16);
+
+	glUseProgram(prog);
+	glUniform1i(texloc, 0);
+
+	for (i = 0; i < PASSES; i++) {
+		if (i != 0)
+			glTextureBarrier();
+		piglit_draw_rect_tex(-1, -1, 2, 2, 0, 0, 1, 1);
+	}
+
+	pass = piglit_probe_image_rgba(0, 0, 16, 16, res_data);
+
+	glUseProgram(0);
+	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, piglit_winsys_fbo);
+	glViewport(0, 0, piglit_width, piglit_height);
+
+	piglit_draw_rect_tex(-1, -1, 2, 2, 0, 0, 1, 1);
+
+	piglit_present_results();
+
+	return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+void piglit_init(int argc, char **argv)
+{
+	unsigned int i, j;
+
+	piglit_require_extension("GL_EXT_framebuffer_object");
+	piglit_require_extension("GL_ARB_texture_barrier");
+        piglit_require_GLSL();
+
+	srand(0);
+	for (i = 0; i < 16 * 16 * 4; ++i) {
+		tex_data[i] = (rand() % 256) / 255.f;
+		res_data[i] = tex_data[i];
+		for (j = 0; j < PASSES; j++)
+			res_data[i] = sqrt(res_data[i]);
+	}
+
+	glEnable(GL_TEXTURE_2D);
+	glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+
+	glGenTextures(1, &tex);
+	glBindTexture(GL_TEXTURE_2D, tex);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 16, 16, 0, GL_RGBA, GL_FLOAT, NULL);
+
+	glGenFramebuffersEXT(1, &fbo);
+	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo);
+	glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, tex, 0);
+	assert(glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT) == GL_FRAMEBUFFER_COMPLETE_EXT);
+
+	prog = piglit_build_simple_program(NULL, fstext);
+
+	texloc = glGetUniformLocation(prog, "fb");
+}
-- 
1.8.5.5