[Piglit] [PATCH 08/10] fbo-generatemipmap-3d: new test for 3D mipmap generation
Marek Olšák
maraeo at gmail.com
Sat Mar 15 09:53:49 PDT 2014
From: Marek Olšák <marek.olsak at amd.com>
---
tests/all.py | 2 +
tests/fbo/CMakeLists.gl.txt | 1 +
tests/fbo/fbo-generatemipmap-3d.c | 308 ++++++++++++++++++++++++++++++++++++++
3 files changed, 311 insertions(+)
create mode 100644 tests/fbo/fbo-generatemipmap-3d.c
diff --git a/tests/all.py b/tests/all.py
index 4ec9c4b..6082c0a 100644
--- a/tests/all.py
+++ b/tests/all.py
@@ -1687,6 +1687,8 @@ add_concurrent_test(arb_framebuffer_object, 'fbo-generatemipmap-cubemap RGB9_E5'
add_concurrent_test(arb_framebuffer_object, 'fbo-generatemipmap-cubemap S3TC_DXT1')
add_concurrent_test(arb_framebuffer_object, 'fbo-generatemipmap-1d')
add_concurrent_test(arb_framebuffer_object, 'fbo-generatemipmap-1d RGB9_E5')
+add_concurrent_test(arb_framebuffer_object, 'fbo-generatemipmap-3d')
+add_concurrent_test(arb_framebuffer_object, 'fbo-generatemipmap-3d RGB9_E5')
# Group ARB_framebuffer_sRGB
arb_framebuffer_srgb = Group()
diff --git a/tests/fbo/CMakeLists.gl.txt b/tests/fbo/CMakeLists.gl.txt
index 19b21c3..7171d8d 100644
--- a/tests/fbo/CMakeLists.gl.txt
+++ b/tests/fbo/CMakeLists.gl.txt
@@ -55,6 +55,7 @@ piglit_add_executable (fbo-fragcoord fbo-fragcoord.c)
piglit_add_executable (fbo-fragcoord2 fbo-fragcoord2.c)
piglit_add_executable (fbo-generatemipmap fbo-generatemipmap.c)
piglit_add_executable (fbo-generatemipmap-1d fbo-generatemipmap-1d.c)
+piglit_add_executable (fbo-generatemipmap-3d fbo-generatemipmap-3d.c)
piglit_add_executable (fbo-generatemipmap-array fbo-generatemipmap-array.c)
piglit_add_executable (fbo-generatemipmap-cubemap fbo-generatemipmap-cubemap.c)
piglit_add_executable (fbo-generatemipmap-filtering fbo-generatemipmap-filtering.c)
diff --git a/tests/fbo/fbo-generatemipmap-3d.c b/tests/fbo/fbo-generatemipmap-3d.c
new file mode 100644
index 0000000..924a96d
--- /dev/null
+++ b/tests/fbo/fbo-generatemipmap-3d.c
@@ -0,0 +1,308 @@
+/*
+ * Copyright © 2014 Advanced Micro Devices, 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
+ * 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:
+ * Marek Olšák <maraeo at gmail.com>
+ */
+
+#include "piglit-util-gl-common.h"
+
+#define TEX_SIZE 32
+#define TEX_LEVELS 6
+
+#define DRAW_SIZE 32
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+ config.supports_gl_compat_version = 10;
+
+ config.window_width = 600;
+ config.window_height = 300;
+ config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+static const char *fs_3d =
+ "uniform sampler3D tex; \n"
+ "void main() \n"
+ "{ \n"
+ " gl_FragColor = texture3D(tex, gl_TexCoord[0].xyz); \n"
+ "} \n";
+
+static GLuint prog;
+static GLenum format;
+
+static float colors[][4] = {
+ {0.0, 0.0, 0.0, 1.0},
+ {1.0, 0.0, 0.0, 1.0},
+ {0.0, 1.0, 0.0, 1.0},
+ {1.0, 1.0, 0.0, 1.0},
+ {0.0, 0.0, 1.0, 1.0},
+ {1.0, 0.0, 1.0, 1.0},
+ {0.0, 1.0, 1.0, 1.0},
+ {1.0, 1.0, 1.0, 1.0},
+};
+
+static void
+gen_level(int level, float *p)
+{
+ int size = TEX_SIZE >> level;
+ int x,y,z,i,c;
+
+ if (size == 1) {
+ memset(p, 0, 4 * sizeof(float));
+
+ /* Average all colors. */
+ for (i = 0; i < 8; i++)
+ for (c = 0; c < 4; c++)
+ p[c] += colors[i][c] * 0.125;
+ return;
+ }
+
+ for (z = 0; z < size; z++) {
+ for (y = 0; y < size; y++) {
+ for (x = 0; x < size; x++) {
+ int octant = (z >= size/2)*4 +
+ (y >= size/2)*2 +
+ (x >= size/2);
+ float *dest = &p[(z*size*size + y*size + x)*4];
+
+ memcpy(dest, colors[octant], 4 * sizeof(float));
+ }
+ }
+ }
+}
+
+static int
+create_tex3d(void)
+{
+ GLuint tex;
+ float *p;
+
+ glGenTextures(1, &tex);
+ glBindTexture(GL_TEXTURE_3D, tex);
+ glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_NEAREST_MIPMAP_NEAREST);
+ glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ glTexStorage3D(GL_TEXTURE_3D, TEX_LEVELS, format,
+ TEX_SIZE, TEX_SIZE, TEX_SIZE);
+
+ p = malloc(TEX_SIZE * TEX_SIZE * TEX_SIZE * 4 * sizeof(float));
+ gen_level(0, p);
+
+ glTexSubImage3D(GL_TEXTURE_3D, 0, 0, 0, 0, TEX_SIZE, TEX_SIZE, TEX_SIZE,
+ GL_RGBA, GL_FLOAT, p);
+ free(p);
+
+ glGenerateMipmap(GL_TEXTURE_3D);
+ return tex;
+}
+
+static void
+piglit_draw_rect_tex3(float x, float y, float w, float h,
+ float tx, float ty, float tw, float th, float td)
+{
+ float verts[4][4];
+ float tex[4][3];
+
+ verts[0][0] = x;
+ verts[0][1] = y;
+ verts[0][2] = 0.0;
+ verts[0][3] = 1.0;
+ tex[0][0] = tx;
+ tex[0][1] = ty;
+ tex[0][2] = td;
+ verts[1][0] = x + w;
+ verts[1][1] = y;
+ verts[1][2] = 0.0;
+ verts[1][3] = 1.0;
+ tex[1][0] = tx + tw;
+ tex[1][1] = ty;
+ tex[1][2] = td;
+ verts[2][0] = x + w;
+ verts[2][1] = y + h;
+ verts[2][2] = 0.0;
+ verts[2][3] = 1.0;
+ tex[2][0] = tx + tw;
+ tex[2][1] = ty + th;
+ tex[2][2] = td;
+ verts[3][0] = x;
+ verts[3][1] = y + h;
+ verts[3][2] = 0.0;
+ verts[3][3] = 1.0;
+ tex[3][0] = tx;
+ tex[3][1] = ty + th;
+ tex[3][2] = td;
+
+ glVertexPointer(4, GL_FLOAT, 0, verts);
+ glTexCoordPointer(3, GL_FLOAT, 0, tex);
+ glEnableClientState(GL_VERTEX_ARRAY);
+ glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+
+ glDrawArrays(GL_QUADS, 0, 4);
+
+ glDisableClientState(GL_VERTEX_ARRAY);
+ glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+}
+
+static void
+draw_slice(int x, int y, float z)
+{
+ int loc;
+
+ glUseProgram(prog);
+ loc = glGetUniformLocation(prog, "tex");
+ glUniform1i(loc, 0); /* texture unit p */
+
+ glViewport(0, 0, piglit_width, piglit_height);
+ piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
+
+ glBindFramebuffer(GL_FRAMEBUFFER, piglit_winsys_fbo);
+
+ piglit_draw_rect_tex3(x, y, DRAW_SIZE, DRAW_SIZE, 0, 0, 1, 1, z);
+ glUseProgram(0);
+}
+
+static void
+draw_mipmap_tree(int x, int y)
+{
+ int z, level;
+
+ for (level = 0; level < TEX_LEVELS; level++) {
+ int size = TEX_SIZE >> level;
+
+ glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_LOD, level);
+ glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAX_LOD, level);
+
+ for (z = 0; z < size; z++) {
+ if (level == 0) {
+ draw_slice(x + (z % (TEX_SIZE/2)) * (DRAW_SIZE + 5),
+ y + (z / (TEX_SIZE/2)) * (DRAW_SIZE + 5),
+ z / (float)size);
+ }
+ else {
+ draw_slice(x + z * (DRAW_SIZE + 5),
+ y + (level + 1) * (DRAW_SIZE + 10),
+ z / (float)size);
+ }
+ }
+ }
+}
+
+static bool
+test_box(int level)
+{
+ int size = TEX_SIZE >> level;
+ int z,x,y,i;
+ bool pass = true;
+ float *e, *observed;
+
+ observed = malloc(size * size * size * 4 * sizeof(float));
+ glGetTexImage(GL_TEXTURE_3D, level, GL_RGBA, GL_FLOAT, observed);
+
+ e = malloc(size * size * size * 4 * sizeof(float));
+ gen_level(level, e);
+
+ for (z = 0; z < size; z++) {
+ for (y = 0; y < size; y++) {
+ for (x = 0; x < size; x++) {
+ float *probe = &observed[(y*size+x)*4];
+ float *expected = &e[(y*size+x)*4];
+
+ for (i = 0; i < 4; ++i) {
+ if (fabs(probe[i] - expected[i]) >= piglit_tolerance[i]) {
+ printf("Probe color at (%i,%i,%i)\n", x, y, z);
+ printf(" Expected: %f %f %f %f\n",
+ expected[0], expected[1], expected[2], expected[3]);
+ printf(" Observed: %f %f %f %f\n",
+ probe[0], probe[1], probe[2], probe[3]);
+ printf(" when testing level %i\n", level);
+ pass = false;
+ goto done;
+ }
+ }
+ }
+ }
+ }
+
+done:
+ free(e);
+ free(observed);
+ return pass;
+}
+
+static bool
+test_mipmap_tree(void)
+{
+ bool pass = true;
+ int level;
+
+ for (level = 0; level < TEX_LEVELS; level++) {
+ pass = pass && test_box(level);
+ }
+
+ return pass;
+}
+
+enum piglit_result
+piglit_display(void)
+{
+ GLboolean pass = GL_TRUE;
+ GLuint tex;
+
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ tex = create_tex3d();
+
+ draw_mipmap_tree(5, 5);
+
+ pass = test_mipmap_tree();
+
+ glDeleteTextures(1, &tex);
+ piglit_present_results();
+ return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+void piglit_init(int argc, char **argv)
+{
+ int i;
+
+ piglit_require_extension("GL_ARB_framebuffer_object");
+ piglit_require_extension("GL_ARB_texture_storage");
+ piglit_require_GLSL_version(120);
+
+ format = GL_RGBA8;
+
+ for (i = 1; i < argc; i++) {
+ if (strcmp(argv[i], "RGB9_E5") == 0) {
+ /* Test a non-renderable format. */
+ piglit_require_extension("GL_EXT_texture_shared_exponent");
+ format = GL_RGB9_E5;
+ }
+ else {
+ assert(0);
+ }
+ }
+
+ prog = piglit_build_simple_program(NULL, fs_3d);
+
+ glClearColor(0.25, 0.25, 0.25, 0.25);
+}
--
1.8.3.2
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