1 files changed, 293 insertions, 0 deletions
diff --git a/tests/spec/arb_texture_cube_map_array/cubemap.c b/tests/spec/arb_texture_cube_map_array/cubemap.c
new file mode 100644
index 000000000..7a44310ca
--- /dev/null
+++ b/tests/spec/arb_texture_cube_map_array/cubemap.c
@@ -0,0 +1,293 @@
+/*
+ * Copyright © 2008-2009 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.
+ *
+ * Authors:
+ *    Eric Anholt <eric@anholt.net>
+ *
+ */
+
+#include "piglit-util-gl-common.h"
+
+#define PAD		5
+
+PIGLIT_GL_TEST_MAIN(
+    (64 * 6 + PAD * 9) * 2 /*window_width*/,
+    400 /*window_height*/,
+    GLUT_DOUBLE | GLUT_RGB)
+
+int max_size;
+
+static GLfloat colors[][3] = {
+	{1.0, 1.0, 1.0},
+	{1.0, 1.0, 0.0},
+	{1.0, 0.0, 0.0},
+	{1.0, 0.0, 1.0},
+	{0.0, 0.0, 1.0},
+	{0.0, 1.0, 1.0},
+	{0.0, 1.0, 0.0},
+};
+
+#if defined(_MSC_VER)
+/**
+ * Find the first bit set in i and return the index set of that bit.
+ */
+static int
+ffs(int i)
+{
+	int bit;
+
+	if (i == 0) {
+		return 0;
+	}
+
+	for (bit = 1; !(i & 1); bit++) {
+		i = i >> 1;
+	}
+
+	return bit;
+}
+#endif
+
+static void
+set_face_image(int level, GLenum face, int size, int color)
+{
+	GLfloat *color1 = colors[color];
+	GLfloat *color2 = colors[(color + 1) % ARRAY_SIZE(colors)];
+	GLfloat *tex;
+	int x, y;
+
+	tex = malloc(size * size * 3 * sizeof(GLfloat));
+
+	/* Set the texture for this face to one corner being color2 and the
+	 * rest color1.  If the texture is 1x1, then it's all color1.
+	 */
+	for (y = 0; y < size; y++) {
+		for (x = 0; x < size; x++) {
+			GLfloat *chosen_color;
+
+			if (y >= (size / 2) || x >= (size / 2))
+				chosen_color = color1;
+			else
+				chosen_color = color2;
+
+			tex[(y * size + x) * 3 + 0] = chosen_color[0];
+			tex[(y * size + x) * 3 + 1] = chosen_color[1];
+			tex[(y * size + x) * 3 + 2] = chosen_color[2];
+		}
+	}
+
+	glTexImage3D(face, level, GL_RGB, size, size, 0, GL_RGB, GL_FLOAT, tex);
+
+	free(tex);
+}
+
+/**
+ * Tests that the mipmap drawn at (x,y)-(x+size,y+size) has the majority color,
+ * with color+1 in bottom left.
+ */
+static GLboolean
+test_results(int x, int y, int size, int level, int face, GLboolean mipmapped,
+	     int color)
+{
+	GLfloat *color1 = colors[color];
+	GLfloat *color2 = colors[(color + 1) % ARRAY_SIZE(colors)];
+	GLboolean pass = GL_TRUE;
+	int x1 = x + size / 4, x2 = x + size * 3 / 4;
+	int y1 = y + size / 4, y2 = y + size * 3 / 4;
+
+	if (size == 1) {
+		pass = pass && piglit_probe_pixel_rgb(x1, y1, color1);
+	} else {
+		pass = pass && piglit_probe_pixel_rgb(x1, y1, color2);
+		pass = pass && piglit_probe_pixel_rgb(x2, y1, color1);
+		pass = pass && piglit_probe_pixel_rgb(x2, y2, color1);
+		pass = pass && piglit_probe_pixel_rgb(x1, y2, color1);
+	}
+
+	if (!pass) {
+		int base_size = size * (1 << level);
+		printf("Cube map failed at size %dx%d, level %d (%dx%d), face %s%s\n",
+		       base_size, base_size, level, size, size,
+		       cube_face_names[face],
+		       mipmapped ? ", mipmapped" : "");
+	}
+
+	return pass;
+}
+
+static GLboolean
+draw_at_size(int size, int x_offset, int y_offset, GLboolean mipmapped)
+{
+	GLfloat row_y = PAD + y_offset;
+	int dim, face;
+	int color = 0, level = 0;
+	GLuint texname;
+	GLboolean pass = GL_TRUE;
+
+	/* Create the texture. */
+	glGenTextures(1, &texname);
+	glBindTexture(GL_TEXTURE_CUBE_MAP_ARRAY_ARB, texname);
+
+	/* For each face drawing, we want to only see that face's contents at
+	 * that mipmap level.
+	 */
+	if (mipmapped) {
+		glTexParameteri(GL_TEXTURE_CUBE_MAP_ARRAY_ARB,
+				GL_TEXTURE_MIN_FILTER,
+				GL_NEAREST_MIPMAP_NEAREST);
+	} else {
+		glTexParameteri(GL_TEXTURE_CUBE_MAP_ARRAY_ARB,
+				GL_TEXTURE_MIN_FILTER,
+				GL_NEAREST);
+	}
+	glTexParameteri(GL_TEXTURE_CUBE_MAP_ARRAY_ARB,
+			GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+	glTexParameteri(GL_TEXTURE_CUBE_MAP_ARRAY_ARB,
+			GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+	glTexParameteri(GL_TEXTURE_CUBE_MAP_ARRAY_ARB,
+			GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+
+	/* Fill in faces on each level */
+	for (dim = size; dim > 0; dim /= 2) {
+		for (face = 0; face < 6; face++) {
+			set_face_image(level, cube_face_targets[face],
+				       dim, color);
+			color = (color + 1) % ARRAY_SIZE(colors);
+		}
+		if (!mipmapped)
+			break;
+
+		level++;
+	}
+
+	glEnable(GL_TEXTURE_CUBE_MAP_ARB);
+
+	color = 0;
+	level = 0;
+	for (dim = size; dim > 0; dim /= 2) {
+		GLfloat row_x = PAD + x_offset;
+
+		for (face = 0; face < 6; face++) {
+			GLfloat base_x = row_x + face * (max_size + PAD);
+			GLfloat base_y = row_y;
+
+			glBegin(GL_QUADS);
+
+			glTexCoord3fv(cube_face_texcoords[face][0]);
+			glVertex2f(base_x, base_y);
+
+			glTexCoord3fv(cube_face_texcoords[face][1]);
+			glVertex2f(base_x + dim, base_y);
+
+			glTexCoord3fv(cube_face_texcoords[face][2]);
+			glVertex2f(base_x + dim, base_y + dim);
+
+			glTexCoord3fv(cube_face_texcoords[face][3]);
+			glVertex2f(base_x, base_y + dim);
+
+			glEnd();
+
+			if (dim > 2) {
+				pass = test_results(base_x, base_y,
+						    dim, level, face,
+						    mipmapped,
+						    color) && pass;
+			}
+
+			color = (color + 1) % ARRAY_SIZE(colors);
+		}
+
+		if (!mipmapped)
+			break;
+
+		row_y += dim + PAD;
+		level++;
+	}
+
+	glDeleteTextures(1, &texname);
+
+	return pass;
+}
+
+
+enum piglit_result
+piglit_display(void)
+{
+	int dim;
+	GLboolean pass = GL_TRUE;
+	int i = 0, y_offset = 0;
+	int row_dim = 0;
+
+	piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
+
+	/* Clear background to gray */
+	glClearColor(0.5, 0.5, 0.5, 1.0);
+	glClear(GL_COLOR_BUFFER_BIT);
+
+	/* First, do each size from MAX_SIZExMAX_SIZE to 1x1 as a
+	 * single texture level.
+	 */
+	y_offset = 0;
+	for (dim = max_size; dim > 0; dim /= 2) {
+		pass = draw_at_size(dim, 0, y_offset, GL_FALSE) && pass;
+		y_offset += dim + PAD;
+	}
+
+	/* Next, do each size with mipmaps from MAX_SIZExMAX_SIZE
+	 * to 1x1.
+	 */
+	y_offset = 0;
+	for (dim = max_size; dim > 0; dim /= 2) {
+		int x_offset = (i % 2 == 1) ? 0 : piglit_width / 2;
+
+		row_dim = (row_dim < dim) ? dim : row_dim;
+
+		pass &= draw_at_size(dim, x_offset, y_offset, GL_TRUE);
+		if (i % 2 == 0) {
+			y_offset += row_dim * 2 + (ffs(dim) + 3) * PAD;
+			row_dim = 0;
+		}
+		i++;
+	}
+
+	glutSwapBuffers();
+
+	return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+	int i;
+
+	piglit_require_extension("GL_ARB_texture_cube_map_array");
+
+	max_size = 64;
+
+	for (i = 1; i < argc; i++) {
+		if (strcmp(argv[i], "npot") == 0) {
+			piglit_require_extension("GL_ARB_texture_non_power_of_two");
+			max_size = 50;
+			break;
+		}
+	}
+}