From: Nicolai Hähnle <nicolai.haeh...@amd.com>
This is similar to the texsubimage test, but checks various type and format
conversions as well as a different set of pixel unpack settings.
v2: cleanups and share some code with texsubimage
---
tests/all.py | 2 +
tests/texturing/CMakeLists.gl.txt | 1 +
tests/texturing/texsubimage-unpack.c | 525 +++++++++++++++++++++++++++++++++++
3 files changed, 528 insertions(+)
create mode 100644 tests/texturing/texsubimage-unpack.c
diff --git a/tests/all.py b/tests/all.py
index f57d205..bb174cb 100644
--- a/tests/all.py
+++ b/tests/all.py
@@ -934,6 +934,7 @@ with profile.group_manager(
g(['streaming-texture-leak'], run_concurrent=False)
g(['texredefine'], run_concurrent=False)
g(['texsubimage'], run_concurrent=False)
+ g(['texsubimage-unpack'])
g(['texsubimage-depth-formats'], run_concurrent=False)
g(['texture-al'], run_concurrent=False)
g(['triangle-guardband-viewport'])
@@ -2294,6 +2295,7 @@ with profile.group_manager(
g(['texsubimage', 'pbo'])
g(['texsubimage', 'array', 'pbo'])
g(['texsubimage', 'cube_map_array', 'pbo'])
+ g(['texsubimage-unpack', 'pbo'])
# Group ARB_provoking_vertex
with profile.group_manager(
diff --git a/tests/texturing/CMakeLists.gl.txt
b/tests/texturing/CMakeLists.gl.txt
index 704ea6d..495acc8 100644
--- a/tests/texturing/CMakeLists.gl.txt
+++ b/tests/texturing/CMakeLists.gl.txt
@@ -90,6 +90,7 @@ IF (UNIX)
target_link_libraries (tex-srgb m)
ENDIF (UNIX)
piglit_add_executable (texsubimage texsubimage.c)
+piglit_add_executable (texsubimage-unpack texsubimage-unpack.c)
piglit_add_executable (texture-al texture-al.c)
piglit_add_executable (texture-rg texture-rg.c)
piglit_add_executable (teximage-colors teximage-colors.c)
diff --git a/tests/texturing/texsubimage-unpack.c
b/tests/texturing/texsubimage-unpack.c
new file mode 100644
index 0000000..cb81053
--- /dev/null
+++ b/tests/texturing/texsubimage-unpack.c
@@ -0,0 +1,525 @@
+/*
+ * Copyright 2016 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
+ * 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
+ * THE AUTHOR(S) 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 that glTexSubImage*D works correctly with GL_UNPACK_ALIGNMENT,
+ * component mapping, and type conversions.
+ */
+
+#include "piglit-util-gl.h"
+#include "../fbo/fbo-formats.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+ config.supports_gl_compat_version = 10;
+
+ config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
+
+ config.window_width = 512;
+ config.window_height = 512;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+#define TEX_WIDTH 32
+#define TEX_HEIGHT 16
+
+/* If set to true then the texture sub image upload will be read
+ * from a PBO */
+static bool use_pbo = false;
+
+static bool have_ARB_texture_rg = false;
+static bool have_EXT_bgra = false;
+static bool have_EXT_abgr = false;
+
+struct src_format_desc {
+ GLenum format;
+ int8_t data_swizzle[4];
+ int8_t tex_swizzle[4];
+ bool *enable;
+};
+
+static const struct src_format_desc test_src_formats[] = {
+#define X (-1)
+#define Y (-2)
+ /* This is first because we test it with all types. */
+ { GL_RGBA, { 0, 1, 2, 3 }, { 0, 1, 2, 3 } },
+
+ /* Remainder is in the order of Table 8.8 of the OpenGL 4.5
+ * (Compatibility Profile) spec. */
+ { GL_RED, { 0, }, { 0, X, X, Y } },
+ { GL_GREEN, { 1, }, { X, 1, X, Y } },
+ { GL_BLUE, { 2, }, { X, X, 2, Y } },
+ { GL_ALPHA, { 3, }, { X, X, X, 3 } },
+ { GL_RG, { 0, 1 }, { 0, 1, X, Y },
&have_ARB_texture_rg },
+ { GL_RGB, { 0, 1, 2, }, { 0, 1, 2, Y } },
+ { GL_BGR, { 2, 1, 0, }, { 0, 1, 2, Y }, &have_EXT_bgra },
+ { GL_BGRA, { 2, 1, 0, 3 }, { 0, 1, 2, 3 }, &have_EXT_bgra },
+ { GL_LUMINANCE, { 0, }, { 0, 0, 0, Y } },
+ { GL_LUMINANCE_ALPHA, { 0, 3, }, { 0, 0, 0, 3 } },
+ { GL_ABGR_EXT, { 3, 2, 1, 0 }, { 0, 1, 2, 3 }, &have_EXT_abgr },
+#undef X
+#undef Y
+};
+
+struct base_internal_format_desc {
+ GLenum format;
+ int8_t swizzle[4];
+};
+
+static const GLenum test_types[] = {
+ GL_UNSIGNED_BYTE,
+ GL_BYTE,
+ GL_UNSIGNED_SHORT,
+ GL_SHORT,
+ GL_UNSIGNED_INT,
+ GL_INT,
+};
+
+/* Sources of RGBA values read from framebuffer when drawing a texture with the
+ * fixed function pipeline, depending on the texture base internal format.
+ */
+static const struct base_internal_format_desc base_internal_formats[] = {
+#define X (-1)
+#define Y (-2)
+ { GL_ALPHA, { Y, Y, Y, 3 } },
+ { GL_INTENSITY, { 0, 0, 0, 0 } },
+ { GL_LUMINANCE, { 0, 0, 0, Y } },
+ { GL_LUMINANCE_ALPHA, { 0, 0, 0, 3 } },
+ { GL_RED, { 0, X, X, Y } },
+ { GL_RG, { 0, 1, X, Y } },
+ { GL_RGB, { 0, 1, 2, Y } },
+ { GL_RGBA, { 0, 1, 2, 3 } },
+#undef X
+#undef Y
+};
+
+static const struct base_internal_format_desc *
+lookup_base_internal_format(GLenum format)
+{
+ for (unsigned i = 0; i < ARRAY_SIZE(base_internal_formats); ++i) {
+ const struct base_internal_format_desc *desc =
&base_internal_formats[i];
+ if (desc->format == format)
+ return desc;
+ }
+
+ fprintf(stderr, "bad base internal format\n");
+ piglit_report_result(PIGLIT_FAIL);
+}
+
+/**
+ * Draw each image of the texture to the framebuffer and then save the
+ * entire thing to a buffer with glReadPixels().
+ */
+static void
+draw_and_read_texture(GLuint w, GLuint h, GLubyte *ref)
+{
+ piglit_draw_rect_tex(0, 0, /* x/y */
+ w, h,
+ 0.0, 0.0, /* tx/ty */
+ 1.0, 1.0 /* tw/th */);
+
+ glReadPixels(0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, ref);
+}
+
+static GLuint
+create_texture(GLenum intFormat,
+ GLsizei w, GLsizei h,
+ GLenum srcFormat,
+ const GLubyte *img)
+{
+ GLuint tex;
+
+ glGenTextures(1, &tex);
+ glBindTexture(GL_TEXTURE_2D, tex);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
+ glTexImage2D(GL_TEXTURE_2D, 0, intFormat, w, h, 0,
+ srcFormat, GL_UNSIGNED_BYTE, img);
+
+ return tex;
+}
+
+/**
+ * Prepare to upload a region of update_img via glTexSubImage*D():
+ *
+ * - \p update_img is a straight-forward 32-bit RGBA format
+ * - src_format and type describe the type and format to be used with
+ * glTexSubImage2D()
+ * - alignment is the pixel unpack alignment
+ *
+ * - the data to be sent to the GL in \p upload will be written to upload
+ * - the (straight-forward 32-bit RGBA format) \p ref_img image will be
+ * modified at the relevant pixels
+ *
+ * \return the number of bytes written to \p upload
+ */
+static unsigned
+prepare_upload(const GLubyte *update_img, const GLubyte *update_ref,
+ GLuint w, GLuint h,
+ const struct base_internal_format_desc *base_format_desc,
+ const struct src_format_desc *src_format,
+ GLenum type,
+ GLint alignment,
+ GLuint tx, GLuint ty,
+ GLuint tw, GLuint th,
+ GLubyte *update_swz_ref,
+ GLubyte *upload)
+{
+ unsigned dst = 0;
+ unsigned components = piglit_num_components(src_format->format);
+
+ for (unsigned y = 0; y < th; ++y) {
+ unsigned src = 4 * (tx + w * (ty + y));
+ const GLubyte *img_tex = update_img + src;
+ const GLubyte *orig_ref_tex = update_ref + src;
+ GLubyte *swz_tex = update_swz_ref + src;
+ for (unsigned x = 0; x < tw; ++x, img_tex += 4, orig_ref_tex +=
4, swz_tex += 4) {
+ for (unsigned i = 0; i < components; ++i) {
+ GLubyte c =
orig_ref_tex[src_format->data_swizzle[i]];
+ switch (type) {
+ case GL_UNSIGNED_BYTE:
+ upload[dst] = c;
+ ++dst;
+ break;
+ case GL_BYTE:
+ upload[dst] = c / 2;
+ ++dst;
+ break;
+ case GL_UNSIGNED_SHORT:
+ *(GLushort *)(upload + dst) = (GLuint)c
* 0x0101U;
+ dst += 2;
+ break;
+ case GL_SHORT:
+ *(GLshort *)(upload + dst) = ((GLuint)c
* 0x0101U) / 2;
+ dst += 2;
+ break;
+ case GL_UNSIGNED_INT:
+ *(GLuint *)(upload + dst) = (GLuint)c *
0x01010101U;
+ dst += 4;
+ break;
+ case GL_INT:
+ *(GLint *)(upload + dst) = ((GLuint)c *
0x01010101U) / 2;
+ dst += 4;
+ break;
+ default:
+ assert(!"unsupported type");
+ }
+ }
+
+ for (unsigned i = 0; i < 4; ++i) {
+ int swz = base_format_desc->swizzle[i];
+ if (swz >= 0)
+ swz = src_format->tex_swizzle[swz];
+ if (swz >= 0)
+ swz_tex[i] = orig_ref_tex[swz];
+ else if (swz == -2)
+ swz_tex[i] = 255;
+ else if (swz == -1)
+ swz_tex[i] = 0;
+ }
+ }
+ dst = (dst + alignment - 1) & ~(alignment - 1);
+ }
+
+ return dst;
+}
+
+static bool
+test_formats_type(const struct format_desc *intFormat,
+ GLuint w, GLuint h,
+ const struct src_format_desc *srcFormat, GLenum type,
+ const GLubyte *original_img, const GLubyte *original_ref,
+ const GLubyte *updated_img, const GLubyte *updated_ref,
+ GLuint pbo,
+ GLubyte *updated_swz_ref, GLubyte *upload_data, GLubyte
*testImg)
+{
+ bool pass = true;
+ const struct base_internal_format_desc *base_format_desc
+ = lookup_base_internal_format(intFormat->base_internal_format);
+ unsigned bits = intFormat->min_bits;
+
+ if (!bits || bits > 8)
+ bits = 8;
+ if (type == GL_BYTE && bits > 7)
+ bits = 7;
+
+ for (unsigned t = 0; t < 3 && pass; t++) {
+ GLuint tex;
+ unsigned upload_bytes;
+
+ /* Choose random region of texture to update.
+ * Use sizes and positions that are multiples of
+ * the compressed block size.
+ */
+ GLint tw = 1 + rand() % w;
+ GLint th = 1 + rand() % h;
+ GLint tx = rand() % (w - tw + 1);
+ GLint ty = rand() % (h - th + 1);
+
+ /* Choose a random alignment. */
+ static const GLint alignments[] = { 1, 2, 4, 8 };
+ GLint alignment = alignments[rand() % ARRAY_SIZE(alignments)];
+
+ assert(tx + tw <= w);
+ assert(ty + th <= h);
+
+ /* Recreate the original texture */
+ tex = create_texture(intFormat->internalformat, w, h,
+ GL_RGBA, original_img);
+
+ upload_bytes = prepare_upload(
+ updated_img, updated_ref, w, h,
+ base_format_desc, srcFormat, type, alignment,
+ tx, ty, tw, th,
+ updated_swz_ref, upload_data);
+
+ if (use_pbo) {
+ glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pbo);
+ glBufferSubData(GL_PIXEL_UNPACK_BUFFER, 0,
upload_bytes, upload_data);
+ }
+
+ /* replace texture region with data from updated image */
+ glPixelStorei(GL_UNPACK_ALIGNMENT, alignment);
+ glTexSubImage2D(GL_TEXTURE_2D, 0, tx, ty, tw, th,
+ srcFormat->format, type,
+ use_pbo ? NULL : upload_data);
+
+ if (use_pbo)
+ glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
+
+ /* draw test image */
+ glClear(GL_COLOR_BUFFER_BIT);
+ draw_and_read_texture(w, h, testImg);
+
+ glDeleteTextures(1, &tex);
+
+ piglit_present_results();
+
+ if (!piglit_equal_images_update_rgba8(
+ original_ref, updated_swz_ref, testImg,
+ w, h, 1, tx, ty, 0, tw, th, 1,
+ bits)) {
+ printf("texsubimage-unpack failed\n");
+ printf(" internal format: %s\n",
piglit_get_gl_enum_name(intFormat->internalformat));
+ printf(" format: %s\n",
piglit_get_gl_enum_name(srcFormat->format));
+ printf(" type: %s\n", piglit_get_gl_enum_name(type));
+ printf(" alignment: %d\n", alignment);
+ printf(" region: %d, %d %d x %d\n", tx, ty, tw, th);
+ pass = false;
+ }
+ }
+
+ return pass;
+}
+
+/**
+ * Create two different images, draw both of them to the framebuffer
+ * via textures of the given \p intFormat and read them back to obtain the
+ * reference data.
+ *
+ * Then, for various combinations of (source data) formats and types,
+ * create a texture with the original image plus a random rectangle changed
+ * to the updated image. Draw that texture, read it back, and compare the
+ * results to what we expect.
+ */
+static bool
+test_format(const struct format_desc *intFormat)
+{
+ const GLuint w = TEX_WIDTH;
+ const GLuint h = TEX_HEIGHT;
+ GLuint tex, j, k, n;
+ GLubyte *original_img, *original_ref;
+ GLubyte *updated_img, *updated_ref;
+ GLubyte *updated_swz_ref;
+ GLubyte *upload_data, *testImg;
+ bool pass = true;
+ GLuint pbo = 0;
+
+ original_img = (GLubyte *) malloc(w * h * 4);
+ original_ref = (GLubyte *) malloc(w * h * 4);
+ updated_img = (GLubyte *) malloc(w * h * 4);
+ updated_ref = (GLubyte *) malloc(w * h * 4);
+ updated_swz_ref = (GLubyte *) malloc(w * h * 4);
+ /* Allow generous extra space for alignment and other data types. */
+ upload_data = (GLubyte *) malloc(w * h * 4 * 5);
+ testImg = (GLubyte *) malloc(w * h * 4);
+
+ /* Fill source tex images. Use only 7 bits of pseudo-randomness per
+ * component because we test GL_BYTE. */
+ n = 0;
+ for (j = 0; j < h; j++) {
+ for (k = 0; k < w; k++) {
+ /* On glibc, RAND_MAX is (1 << 31) - 1, which
+ * is good enough. */
+ int data = rand();
+ original_img[n + 0] = ((data >> 0) & 0x7f) * 0x81 >> 6;
+ original_img[n + 1] = ((data >> 7) & 0x7f) * 0x81 >> 6;
+ original_img[n + 2] = ((data >> 14) & 0x7f) * 0x81 >> 6;
+ original_img[n + 3] = ((data >> 21) & 0x7f) * 0x81 >> 6;
+
+ data = rand();
+ updated_img[n + 0] = ((data >> 0) & 0x7f) * 0x81 >> 6;
+ updated_img[n + 1] = ((data >> 7) & 0x7f) * 0x81 >> 6;
+ updated_img[n + 2] = ((data >> 14) & 0x7f) * 0x81 >> 6;
+ updated_img[n + 3] = ((data >> 21) & 0x7f) * 0x81 >> 6;
+
+ n += 4;
+ }
+ }
+
+ if (use_pbo) {
+ glGenBuffers(1, &pbo);
+ glBindBuffer(GL_PIXEL_UNPACK_BUFFER, pbo);
+ glBufferData(GL_PIXEL_UNPACK_BUFFER,
+ w * h * 4 * 5,
+ NULL,
+ GL_STREAM_DRAW);
+ glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
+ }
+
+ glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+
+
+ /* draw original reference image */
+ tex = create_texture(intFormat->internalformat, w, h,
+ GL_RGBA, original_img);
+ glClear(GL_COLOR_BUFFER_BIT);
+ draw_and_read_texture(w, h, original_ref);
+ glDeleteTextures(1, &tex);
+
+ /* draw updated reference image */
+ tex = create_texture(intFormat->internalformat, w, h,
+ GL_RGBA, updated_img);
+ glClear(GL_COLOR_BUFFER_BIT);
+ draw_and_read_texture(w, h, updated_ref);
+ glDeleteTextures(1, &tex);
+
+ /* Test all source formats with type GL_UNSIGNED_BYTE. */
+ for (n = 0; n < ARRAY_SIZE(test_src_formats); ++n) {
+ const struct src_format_desc* srcFormat = &test_src_formats[n];
+ if (srcFormat->enable && !*srcFormat->enable)
+ continue;
+
+ pass = test_formats_type(
+ intFormat, w, h,
+ srcFormat, GL_UNSIGNED_BYTE,
+ original_img, original_ref, updated_img, updated_ref,
+ pbo, updated_swz_ref, upload_data, testImg) && pass;
+ }
+
+ /* Test the GL_RGBA format with all other types. */
+ for (n = 1; n < ARRAY_SIZE(test_types); ++n) {
+ pass = test_formats_type(
+ intFormat, w, h,
+ &test_src_formats[0], test_types[n],
+ original_img, original_ref, updated_img, updated_ref,
+ pbo, updated_swz_ref, upload_data, testImg) && pass;
+ }
+
+ free(original_img);
+ free(original_ref);
+ free(updated_img);
+ free(updated_ref);
+ free(updated_swz_ref);
+ free(upload_data);
+ free(testImg);
+
+ if (use_pbo)
+ glDeleteBuffers(1, &pbo);
+
+ return pass;
+}
+
+
+enum piglit_result
+piglit_display(void)
+{
+ bool pass = true;
+ int i;
+
+ /* Section 3.8.1 (Texture Image Specification) of the OpenGL 2.1
+ * specification says:
+ *
+ * "For the purposes of decoding the texture image, TexImage2D is
+ * equivalent to calling TexImage3D with corresponding arguments
+ * and depth of 1, except that
+ *
+ * ...
+ *
+ * * UNPACK SKIP IMAGES is ignored."
+ */
+ glPixelStorei(GL_UNPACK_SKIP_IMAGES, 1);
+
+ glEnable(GL_TEXTURE_2D);
+
+ /* loop over the format groups */
+ for (i = 0; i < ARRAY_SIZE(core); ++i)
+ pass = test_format(&core[i]) && pass;
+
+ if (have_ARB_texture_rg) {
+ for (i = 0; i < ARRAY_SIZE(arb_texture_rg); ++i)
+ pass = test_format(&arb_texture_rg[i]) && pass;
+ }
+
+ glDisable(GL_TEXTURE_2D);
+
+ return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+
+void
+piglit_init(int argc, char **argv)
+{
+ int remaining_argc = 1;
+ int i;
+
+ srand(0); /* reproducibility of the first error */
+
+ for (i = 1; i < argc; i++) {
+ if (!strcmp(argv[i], "pbo")) {
+ piglit_require_extension("GL_ARB_pixel_buffer_object");
+ use_pbo = true;
+ } else {
+ argv[remaining_argc++] = argv[i];
+ }
+ }
+
+ fbo_formats_init(remaining_argc, argv, 0);
+ (void) fbo_formats_display;
+
+ piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
+
+#define CHECK_EXTENSION(name) \
+ do { \
+ have_ ## name = piglit_is_extension_supported("GL_" #name); \
+ printf("GL_" #name " supported = %s\n", \
+ have_ ## name ? "yes" : "no"); \
+ } while (false)
+
+ CHECK_EXTENSION(ARB_texture_rg);
+ CHECK_EXTENSION(EXT_bgra);
+ CHECK_EXTENSION(EXT_abgr);
+
+#undef CHECK_EXTENSION
+}
--
2.5.0
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