From: Marek Olšák <[email protected]>
---
tests/all.tests | 8 +
.../spec/arb_framebuffer_object/CMakeLists.gl.txt | 1 +
.../arb_framebuffer_object/fbo-drawbuffers-none.c | 444 +++++++++++++++++++++
3 files changed, 453 insertions(+)
create mode 100644 tests/spec/arb_framebuffer_object/fbo-drawbuffers-none.c
diff --git a/tests/all.tests b/tests/all.tests
index ec71bed..f61f519 100644
--- a/tests/all.tests
+++ b/tests/all.tests
@@ -1308,6 +1308,14 @@ arb_framebuffer_object['FBO blit from missing
attachment'] = concurrent_test('fb
arb_framebuffer_object['fbo-scissor-blit fbo'] =
concurrent_test('fbo-scissor-blit fbo')
arb_framebuffer_object['fbo-scissor-blit window'] =
plain_test('fbo-scissor-blit window')
arb_framebuffer_object['negative-readpixels-no-rb'] =
concurrent_test('arb_framebuffer_object-negative-readpixels-no-rb')
+add_concurrent_test(arb_framebuffer_object, 'fbo-drawbuffers-none glClear')
+add_concurrent_test(arb_framebuffer_object, 'fbo-drawbuffers-none
glClearBuffer')
+add_concurrent_test(arb_framebuffer_object, 'fbo-drawbuffers-none
gl_FragColor')
+add_concurrent_test(arb_framebuffer_object, 'fbo-drawbuffers-none gl_FragData')
+add_concurrent_test(arb_framebuffer_object, 'fbo-drawbuffers-none
glColorMaskIndexed')
+add_concurrent_test(arb_framebuffer_object, 'fbo-drawbuffers-none
glBlendFunci')
+add_concurrent_test(arb_framebuffer_object, 'fbo-drawbuffers-none
glDrawPixels')
+add_concurrent_test(arb_framebuffer_object, 'fbo-drawbuffers-none
glBlitFramebuffer')
# Group ARB_framebuffer_sRGB
arb_framebuffer_srgb = Group()
diff --git a/tests/spec/arb_framebuffer_object/CMakeLists.gl.txt
b/tests/spec/arb_framebuffer_object/CMakeLists.gl.txt
index 230561e..f20f055 100644
--- a/tests/spec/arb_framebuffer_object/CMakeLists.gl.txt
+++ b/tests/spec/arb_framebuffer_object/CMakeLists.gl.txt
@@ -17,5 +17,6 @@
piglit_add_executable(same-attachment-glFramebufferTexture2D-GL_DEPTH_STENCIL_AT
piglit_add_executable(same-attachment-glFramebufferRenderbuffer-GL_DEPTH_STENCIL_ATTACHMENT
same-attachment-glFramebufferRenderbuffer-GL_DEPTH_STENCIL_ATTACHMENT.c)
piglit_add_executable (fbo-blit-scaled-linear blit-scaled-linear.cpp)
piglit_add_executable (fbo-attachments-blit-scaled-linear
attachments-blit-scaled-linear.cpp)
+piglit_add_executable(fbo-drawbuffers-none fbo-drawbuffers-none.c)
# vim: ft=cmake:
diff --git a/tests/spec/arb_framebuffer_object/fbo-drawbuffers-none.c
b/tests/spec/arb_framebuffer_object/fbo-drawbuffers-none.c
new file mode 100644
index 0000000..cdf76e5
--- /dev/null
+++ b/tests/spec/arb_framebuffer_object/fbo-drawbuffers-none.c
@@ -0,0 +1,444 @@
+/* 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.
+ */
+
+/**
+ * Verify that glDrawBuffers with one or several of the drawbuffers set
+ * to GL_NONE works as expected. Also test a random order of
+ * GL_COLOR_ATTACHMENTi enums (not necessarily starting from i=0).
+ *
+ * For such drawbuffer configurations, test the following:
+ * - glClear
+ * - glClearBuffer
+ * - drawing with gl_FragColor being written
+ * - drawing with gl_FragData being written
+ * - per-drawbuffer colormasks
+ * - per-drawbuffer blend functions
+ * - glDrawPixels
+ * - glBlitFramebuffer (the read buffer is an FBO with one color attachment)
+ *
+ * The fragment shader writes gl_FragData[0..3] or gl_FragColor.
+ *
+ * \author Marek Olšák <[email protected]>
+ */
+
+#include "piglit-util-gl-common.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+ config.supports_gl_compat_version = 10;
+ config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+#define FB_SIZE 32
+
+static const GLenum drawbuf_config[][4] = {
+ /* All 4 color attachments are used */
+ {GL_COLOR_ATTACHMENT3, GL_COLOR_ATTACHMENT2, GL_COLOR_ATTACHMENT1,
GL_COLOR_ATTACHMENT0},
+ /* NONE appears once */
+ {GL_NONE, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT0,
GL_COLOR_ATTACHMENT2},
+ {GL_COLOR_ATTACHMENT1, GL_NONE, GL_COLOR_ATTACHMENT3,
GL_COLOR_ATTACHMENT0},
+ {GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT3, GL_NONE,
GL_COLOR_ATTACHMENT2},
+ {GL_COLOR_ATTACHMENT2, GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT3,
GL_NONE},
+ /* NONE appears twice */
+ {GL_NONE, GL_NONE, GL_COLOR_ATTACHMENT3, GL_COLOR_ATTACHMENT2},
+ {GL_NONE, GL_COLOR_ATTACHMENT0, GL_NONE, GL_COLOR_ATTACHMENT1},
+ {GL_NONE, GL_COLOR_ATTACHMENT2, GL_COLOR_ATTACHMENT0, GL_NONE},
+ {GL_COLOR_ATTACHMENT3, GL_NONE, GL_NONE, GL_COLOR_ATTACHMENT1},
+ {GL_COLOR_ATTACHMENT0, GL_NONE, GL_COLOR_ATTACHMENT1, GL_NONE},
+ {GL_COLOR_ATTACHMENT2, GL_COLOR_ATTACHMENT0, GL_NONE, GL_NONE},
+ /* NONE appears three times */
+ {GL_NONE, GL_NONE, GL_NONE, GL_COLOR_ATTACHMENT1},
+ {GL_NONE, GL_NONE, GL_COLOR_ATTACHMENT2, GL_NONE},
+ {GL_NONE, GL_COLOR_ATTACHMENT0, GL_NONE, GL_NONE},
+ {GL_COLOR_ATTACHMENT3, GL_NONE, GL_NONE, GL_NONE},
+};
+
+#define CLEAR_COLOR 0.2
+static const float color_initial[4] = {CLEAR_COLOR, CLEAR_COLOR, CLEAR_COLOR,
CLEAR_COLOR};
+static const float color_red[4] = {1, 0, 0, 1};
+static const float color_green[4] = {0, 1, 0, 1};
+static const float color_blue[4] = {0, 0, 1, 1};
+static const float color_yellow[4] = {1, 1, 0, 1};
+
+static const float *colors_all_red[] = {
+ color_red,
+ color_red,
+ color_red,
+ color_red
+};
+
+static const float *colors_all_different[] = {
+ color_red,
+ color_green,
+ color_blue,
+ color_yellow,
+};
+
+static const char *vs =
+ "void main() \n"
+ "{ \n"
+ " gl_Position = gl_Vertex; \n"
+ "}\n";
+
+static const char *fs_write_red =
+ "void main() \n"
+ "{ \n"
+ " gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0); \n"
+ "}\n";
+
+static const char *fs_write_different =
+ "void main() \n"
+ "{ \n"
+ " gl_FragData[0] = vec4(1.0, 0.0, 0.0, 1.0); \n"
+ " gl_FragData[1] = vec4(0.0, 1.0, 0.0, 1.0); \n"
+ " gl_FragData[2] = vec4(0.0, 0.0, 1.0, 1.0); \n"
+ " gl_FragData[3] = vec4(1.0, 1.0, 0.0, 1.0); \n"
+ "}\n";
+
+static const char *test_name;
+static GLuint fb, prog_write_all_red, prog_write_all_different;
+
+
+static void create_shaders()
+{
+ prog_write_all_red = piglit_build_simple_program_multiple_shaders(
+ GL_VERTEX_SHADER, vs,
+ GL_FRAGMENT_SHADER, fs_write_red,
+ 0);
+
+ prog_write_all_different = piglit_build_simple_program_multiple_shaders(
+ GL_VERTEX_SHADER, vs,
+ GL_FRAGMENT_SHADER, fs_write_different,
+ 0);
+}
+
+static void create_and_bind_fbo()
+{
+ GLuint rb[4];
+ GLuint i;
+ GLenum status;
+
+ glGenFramebuffers(1, &fb);
+ glBindFramebuffer(GL_FRAMEBUFFER, fb);
+ glGenRenderbuffers(4, rb);
+
+ /* Add 4 color attachments. */
+ for (i = 0; i < 4; i++) {
+ glBindRenderbuffer(GL_RENDERBUFFER, rb[i]);
+ /* Buffer storage is allocated based on render buffer format */
+ glRenderbufferStorage(GL_RENDERBUFFER, GL_RGBA8, FB_SIZE,
FB_SIZE);
+ /* Attach the render buffer to a color attachment */
+ glFramebufferRenderbuffer(GL_FRAMEBUFFER,
+ GL_COLOR_ATTACHMENT0 + i,
+ GL_RENDERBUFFER, rb[i]);
+
+ if (!piglit_check_gl_error(GL_NO_ERROR))
+ piglit_report_result(PIGLIT_FAIL);
+ }
+
+ status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
+ if (status != GL_FRAMEBUFFER_COMPLETE) {
+ fprintf(stderr,
+ "Framebuffer with color"
+ "attachment was not complete: 0x%04x\n",
+ status);
+ piglit_report_result(PIGLIT_FAIL);
+ }
+
+ if (!piglit_check_gl_error(GL_NO_ERROR))
+ piglit_report_result(PIGLIT_FAIL);
+
+ glViewport(0, 0, FB_SIZE, FB_SIZE);
+}
+
+static void clear_all_attachments_to_initial_value()
+{
+ static GLenum drawbufs[] = {
+ GL_COLOR_ATTACHMENT0,
+ GL_COLOR_ATTACHMENT1,
+ GL_COLOR_ATTACHMENT2,
+ GL_COLOR_ATTACHMENT3
+ };
+
+ glDrawBuffers(4, drawbufs);
+ glClearColor(color_initial[0], color_initial[1], color_initial[2],
color_initial[3]);
+ glClear(GL_COLOR_BUFFER_BIT);
+}
+
+static bool probe_buffers(const GLenum drawbufs[4],
+ const float *expected_color[4])
+{
+ int i, j;
+ bool pass = true;
+
+ for (i = 0; i < 4; i++) {
+ const float *expected = color_initial;
+
+ /* Set the expected color if the color attachment is bound
+ * for drawing.
+ */
+ for (j = 0; j < 4; j++) {
+ if (GL_COLOR_ATTACHMENT0 + i == drawbufs[j]) {
+ expected = expected_color[j];
+ break;
+ }
+ }
+
+ glReadBuffer(GL_COLOR_ATTACHMENT0 + i);
+ if (!piglit_probe_rect_rgba(0, 0, FB_SIZE, FB_SIZE,
+ expected)) {
+ printf(" from color attachment %i,\n"
+ " config (", i);
+
+ for (j = 0; j < 4; j++) {
+ if (drawbufs[j] == GL_NONE) {
+ printf("NONE");
+ }
+ else {
+ printf("COLOR_ATTACHMENT%i",
+ drawbufs[j] -
GL_COLOR_ATTACHMENT0);
+ }
+ printf(j < 3 ? ", " : ")\n");
+ }
+ pass = false;
+ continue;
+ }
+ }
+ return pass;
+}
+
+static bool test_glClear(const GLenum drawbufs[4])
+{
+ glClearColor(color_red[0], color_red[1], color_red[2], color_red[3]);
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ return probe_buffers(drawbufs, colors_all_red);
+}
+
+static bool test_glClearBuffer(const GLenum drawbufs[4])
+{
+ int i;
+
+ for (i = 0; i < 4; i++)
+ glClearBufferfv(GL_COLOR, i, colors_all_different[i]);
+
+ return probe_buffers(drawbufs, colors_all_different);
+}
+
+static bool test_fragcolor(const GLenum drawbufs[4])
+{
+ glUseProgram(prog_write_all_red);
+ piglit_draw_rect(-1, -1, 2, 2);
+ glUseProgram(0);
+
+ return probe_buffers(drawbufs, colors_all_red);
+}
+
+static bool test_fragdata(const GLenum drawbufs[4])
+{
+ glUseProgram(prog_write_all_different);
+ piglit_draw_rect(-1, -1, 2, 2);
+ glUseProgram(0);
+
+ return probe_buffers(drawbufs, colors_all_different);
+}
+
+static bool test_glColorMaskIndexed(const GLenum drawbufs[4])
+{
+ static const float color_masked_red[4] = {1, 0, CLEAR_COLOR,
CLEAR_COLOR};
+ static const float color_masked_green[4] = {CLEAR_COLOR, 1, 0,
CLEAR_COLOR};
+ static const float color_masked_blue[4] = {CLEAR_COLOR, CLEAR_COLOR, 1,
1};
+ static const float color_masked_yellow[4] = {1, 1, CLEAR_COLOR, 1};
+ static const float *colors_masked[] = {
+ color_masked_red,
+ color_masked_green,
+ color_masked_blue,
+ color_masked_yellow,
+ };
+
+ glColorMaskIndexedEXT(0, 1, 1, 0, 0);
+ glColorMaskIndexedEXT(1, 0, 1, 1, 0);
+ glColorMaskIndexedEXT(2, 0, 0, 1, 1);
+ glColorMaskIndexedEXT(3, 1, 1, 0, 1);
+
+ glUseProgram(prog_write_all_different);
+ piglit_draw_rect(-1, -1, 2, 2);
+ glUseProgram(0);
+
+ glColorMask(1, 1, 1, 1);
+
+ return probe_buffers(drawbufs, colors_masked);
+}
+
+static bool test_glBlendFunci(const GLenum drawbufs[4])
+{
+ static const float color_blended_red[4] = {1, CLEAR_COLOR, CLEAR_COLOR,
1};
+ static const float color_blended_green[4] = {0, CLEAR_COLOR, 0,
CLEAR_COLOR};
+ static const float color_blended_blue[4] = {0, 0, CLEAR_COLOR*2,
CLEAR_COLOR*2};
+ static const float color_blended_yellow[4] = {1-CLEAR_COLOR,
1-CLEAR_COLOR, 0, 1-CLEAR_COLOR};
+ static const float *colors_blended[] = {
+ color_blended_red,
+ color_blended_green,
+ color_blended_blue,
+ color_blended_yellow,
+ };
+
+ glEnable(GL_BLEND);
+
+ glBlendFunciARB(0, GL_ONE, GL_ONE);
+ glBlendFunciARB(1, GL_DST_COLOR, GL_ZERO);
+ glBlendFunciARB(2, GL_DST_COLOR, GL_SRC_COLOR);
+ glBlendFunciARB(3, GL_ONE_MINUS_DST_COLOR, GL_ZERO);
+
+ glUseProgram(prog_write_all_different);
+ piglit_draw_rect(-1, -1, 2, 2);
+ glUseProgram(0);
+
+ glDisable(GL_BLEND);
+
+ return probe_buffers(drawbufs, colors_blended);
+}
+
+static bool test_glDrawPixels(const GLenum drawbufs[4])
+{
+ unsigned char pixels[FB_SIZE*FB_SIZE];
+
+ memset(pixels, 0xff, sizeof(pixels));
+
+ glUseProgram(prog_write_all_red);
+ glDrawPixels(FB_SIZE, FB_SIZE, GL_RED, GL_UNSIGNED_BYTE, pixels);
+ glUseProgram(0);
+
+ return probe_buffers(drawbufs, colors_all_red);
+}
+
+static bool test_glBlitFramebuffer(const GLenum drawbufs[4])
+{
+ GLuint rb, readfb;
+ GLenum status;
+
+ /* Create a new renderbuffer and attach it to a new FBO. */
+ glGenRenderbuffers(1, &rb);
+ glBindRenderbuffer(GL_RENDERBUFFER, rb);
+ glRenderbufferStorage(GL_RENDERBUFFER, GL_RGBA8, FB_SIZE, FB_SIZE);
+
+ glGenFramebuffers(1, &readfb);
+ glBindFramebuffer(GL_FRAMEBUFFER, readfb);
+ glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
+ GL_RENDERBUFFER, rb);
+
+ status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
+ if (status != GL_FRAMEBUFFER_COMPLETE) {
+ fprintf(stderr,
+ "Framebuffer with color"
+ "attachment was not complete: 0x%04x\n",
+ status);
+ piglit_report_result(PIGLIT_FAIL);
+ }
+
+ /* Clear the renderbuffer to red. */
+ glClearColor(1, 0, 0, 1);
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ /* Blit the renderbuffer to our FBO with MRT. */
+ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fb);
+ glBlitFramebuffer(0, 0, FB_SIZE, FB_SIZE, 0, 0, FB_SIZE, FB_SIZE,
+ GL_COLOR_BUFFER_BIT, GL_NEAREST);
+
+ glBindFramebuffer(GL_FRAMEBUFFER, fb);
+ return probe_buffers(drawbufs, colors_all_red);
+}
+
+void piglit_init(int argc, char **argv)
+{
+ bool pass = true;
+ int i, max_draw_bufs;
+
+ if (argc != 2) {
+ printf("Expected one parameter, got %i.\n", argc-1);
+ piglit_report_result(PIGLIT_FAIL);
+ }
+ test_name = argv[1];
+
+ piglit_require_gl_version(21);
+ piglit_require_extension("GL_ARB_framebuffer_object");
+
+ glGetIntegerv(GL_MAX_DRAW_BUFFERS_ARB, &max_draw_bufs);
+ if (max_draw_bufs < 4) {
+ puts("At least 4 draw buffers are required.");
+ piglit_report_result(PIGLIT_SKIP);
+ }
+
+ printf("Testing %s.\n", test_name);
+
+ /* Begin testing. */
+ create_shaders();
+ create_and_bind_fbo();
+
+ for (i = 0; i < ARRAY_SIZE(drawbuf_config); i++) {
+ clear_all_attachments_to_initial_value();
+
+ glDrawBuffers(4, drawbuf_config[i]);
+
+ if (strcmp(test_name, "glClear") == 0) {
+ pass = test_glClear(drawbuf_config[i]) && pass;
+ }
+ else if (strcmp(test_name, "glClearBuffer") == 0) {
+ piglit_require_gl_version(30);
+ pass = test_glClearBuffer(drawbuf_config[i]) && pass;
+ }
+ else if (strcmp(test_name, "gl_FragColor") == 0) {
+ pass = test_fragcolor(drawbuf_config[i]) && pass;
+ }
+ else if (strcmp(test_name, "gl_FragData") == 0) {
+ pass = test_fragdata(drawbuf_config[i]) && pass;
+ }
+ else if (strcmp(test_name, "glColorMaskIndexed") == 0) {
+ piglit_require_extension("GL_EXT_draw_buffers2");
+ pass = test_glColorMaskIndexed(drawbuf_config[i]) &&
pass;
+ }
+ else if (strcmp(test_name, "glBlendFunci") == 0) {
+ piglit_require_extension("GL_ARB_draw_buffers_blend");
+ pass = test_glBlendFunci(drawbuf_config[i]) && pass;
+ }
+ else if (strcmp(test_name, "glDrawPixels") == 0) {
+ pass = test_glDrawPixels(drawbuf_config[i]) && pass;
+ }
+ else if (strcmp(test_name, "glBlitFramebuffer") == 0) {
+ pass = test_glBlitFramebuffer(drawbuf_config[i]) &&
pass;
+ }
+ else {
+ printf("Unknown subtest: %s\n", test_name);
+ piglit_report_result(PIGLIT_FAIL);
+ }
+ }
+
+ pass = piglit_check_gl_error(GL_NO_ERROR) && pass;
+ piglit_report_result(pass ? PIGLIT_PASS : PIGLIT_FAIL);
+}
+
+enum piglit_result
+piglit_display(void)
+{
+ return PIGLIT_FAIL;
+}
--
1.8.3.2
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