[Piglit] [PATCH] ARB_blend_func_extended: test all blending modes
Dave Airlie
airlied at gmail.com
Sun Mar 25 11:47:23 PDT 2012
From: Dave Airlie <airlied at redhat.com>
This tests all the src1 blending modes along with the SRC_ALPHA_SATURATE mode for dst.
(it also tests SRC_ALPHA_SATURATE for src just to be complete).
This test should complete the tests necessary for merging ARB_blend_func_extended.
Signed-off-by: Dave Airlie <airlied at redhat.com>
---
tests/spec/arb_blend_func_extended/CMakeLists.txt | 3 +-
.../execution/CMakeLists.gl.txt | 16 +
.../execution/CMakeLists.txt | 1 +
.../execution/fbo-extended-blend.c | 331 ++++++++++++++++++++
4 files changed, 350 insertions(+), 1 deletions(-)
create mode 100644 tests/spec/arb_blend_func_extended/execution/CMakeLists.gl.txt
create mode 100644 tests/spec/arb_blend_func_extended/execution/CMakeLists.txt
create mode 100644 tests/spec/arb_blend_func_extended/execution/fbo-extended-blend.c
diff --git a/tests/spec/arb_blend_func_extended/CMakeLists.txt b/tests/spec/arb_blend_func_extended/CMakeLists.txt
index 6903d88..d5944e3 100644
--- a/tests/spec/arb_blend_func_extended/CMakeLists.txt
+++ b/tests/spec/arb_blend_func_extended/CMakeLists.txt
@@ -1,2 +1,3 @@
add_subdirectory (api)
-piglit_include_target_api()
\ No newline at end of file
+add_subdirectory (execution)
+piglit_include_target_api()
diff --git a/tests/spec/arb_blend_func_extended/execution/CMakeLists.gl.txt b/tests/spec/arb_blend_func_extended/execution/CMakeLists.gl.txt
new file mode 100644
index 0000000..e04e935
--- /dev/null
+++ b/tests/spec/arb_blend_func_extended/execution/CMakeLists.gl.txt
@@ -0,0 +1,16 @@
+include_directories(
+ ${GLEXT_INCLUDE_DIR}
+ ${OPENGL_INCLUDE_PATH}
+ ${GLUT_INCLUDE_DIR}
+ ${piglit_SOURCE_DIR}/tests/util
+)
+
+link_libraries (
+ piglitutil
+ ${OPENGL_gl_LIBRARY}
+ ${OPENGL_glu_LIBRARY}
+ ${GLUT_glut_LIBRARY}
+)
+
+add_executable (arb_blend_func_extended-fbo-extended-blend fbo-extended-blend.c)
+# vim: ft=cmake:
diff --git a/tests/spec/arb_blend_func_extended/execution/CMakeLists.txt b/tests/spec/arb_blend_func_extended/execution/CMakeLists.txt
new file mode 100644
index 0000000..144a306
--- /dev/null
+++ b/tests/spec/arb_blend_func_extended/execution/CMakeLists.txt
@@ -0,0 +1 @@
+piglit_include_target_api()
diff --git a/tests/spec/arb_blend_func_extended/execution/fbo-extended-blend.c b/tests/spec/arb_blend_func_extended/execution/fbo-extended-blend.c
new file mode 100644
index 0000000..e0f0d96
--- /dev/null
+++ b/tests/spec/arb_blend_func_extended/execution/fbo-extended-blend.c
@@ -0,0 +1,331 @@
+/*
+ * Copyright (c) 2011 Red Hat 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.
+ */
+
+/*
+ * Author:
+ * Dave Airlie
+ */
+
+/**
+ * @file fbo-extended-blend.c
+ *
+ * Test GL_ARB_blend_func_extended.
+ *
+ * Note all closed drivers seem to only support 1 dual source draw target
+ * so just have the initial test validate that
+ */
+
+#include "piglit-util.h"
+#include "piglit-framework.h"
+
+int piglit_width = 100;
+int piglit_height = 100;
+int piglit_window_mode = GLUT_RGB;
+
+static const char *TestName = "fbo-extended-blend";
+
+static GLint maxDSBuffers;
+static GLuint FBO;
+
+static GLenum srcFactors[] = {
+ GL_ZERO,
+ GL_SRC1_COLOR,
+ GL_ONE_MINUS_SRC1_COLOR,
+ GL_SRC1_ALPHA,
+ GL_ONE_MINUS_SRC1_ALPHA,
+ GL_SRC_ALPHA_SATURATE,
+};
+
+static GLenum dstFactors[] = {
+ GL_ZERO,
+ GL_SRC1_COLOR,
+ GL_ONE_MINUS_SRC1_COLOR,
+ GL_SRC1_ALPHA,
+ GL_ONE_MINUS_SRC1_ALPHA,
+ GL_SRC_ALPHA_SATURATE,
+};
+
+static GLenum operators[] = {
+ GL_FUNC_ADD,
+ GL_FUNC_SUBTRACT,
+ GL_FUNC_REVERSE_SUBTRACT,
+ GL_MIN,
+ GL_MAX,
+};
+
+static void
+check_error(int line)
+{
+ GLenum err = glGetError();
+ if (err) {
+ printf("%s: Unexpected error 0x%x at line %d\n",
+ TestName, err, line);
+ piglit_report_result(PIGLIT_FAIL);
+ }
+}
+
+static GLint uniform_src1;
+
+static void blend(const float *rect, const float *src, const float *src1, const float *dst, GLenum blendsrc, GLenum blenddst, GLenum blendop)
+{
+ glColor4fv(dst);
+ piglit_draw_rect(rect[0], rect[1], rect[2], rect[3]);
+ glEnable(GL_BLEND);
+ glBlendEquation(blendop);
+ glBlendFunc(blendsrc, blenddst);
+ glUniform4f(uniform_src1, src1[0], src1[1], src1[2], src1[3]);
+ glColor4fv(src);
+ piglit_draw_rect(rect[0], rect[1], rect[2], rect[3]);
+ glDisable(GL_BLEND);
+}
+
+static void blend_expected(float *expected, const float *src, const float *src1, const float *dst, GLenum blendsrc, GLenum blenddst, GLenum blendop)
+{
+ float a;
+ int i;
+ float src_vals[4] = {0}, dst_vals[4] = {0};
+
+ switch (blendsrc) {
+ case GL_ZERO:
+ for (i = 0; i < 4; i++)
+ src_vals[i] = 0;
+ break;
+ case GL_SRC1_COLOR:
+ for (i = 0; i < 4; i++)
+ src_vals[i] = src[i] * src1[i];
+ break;
+ case GL_ONE_MINUS_SRC1_COLOR:
+ for (i = 0; i < 4; i++)
+ src_vals[i] = src[i] * (1.0 - src1[i]);
+ break;
+ case GL_SRC1_ALPHA:
+ a = src1[3];
+ for (i = 0; i < 4; i++)
+ src_vals[i] = src[i] * a;
+ break;
+ case GL_ONE_MINUS_SRC1_ALPHA:
+ a = src1[3];
+ for (i = 0; i < 4; i++)
+ src_vals[i] = src[i] * (1.0 - a);
+ break;
+ case GL_SRC_ALPHA_SATURATE:
+ a = MIN2(src[3], (1 - dst[3]));
+ for (i = 0; i < 3; i++)
+ src_vals[i] = src[i] * a;
+ src_vals[3] = src[3];
+ break;
+ }
+
+ switch (blenddst) {
+ case GL_ZERO:
+ break;
+ case GL_SRC1_COLOR:
+ for (i = 0; i < 4; i++)
+ dst_vals[i] = dst[i] * src1[i];
+ break;
+ case GL_ONE_MINUS_SRC1_COLOR:
+ for (i = 0; i < 4; i++)
+ dst_vals[i] = dst[i] * (1.0 - src1[i]);
+ break;
+ case GL_SRC1_ALPHA:
+ a = src1[3];
+ for (i = 0; i < 4; i++)
+ dst_vals[i] = dst[i] * a;
+ break;
+ case GL_ONE_MINUS_SRC1_ALPHA:
+ a = src1[3];
+ for (i = 0; i < 4; i++)
+ dst_vals[i] = dst[i] * (1.0 - a);
+ break;
+ case GL_SRC_ALPHA_SATURATE:
+ a = MIN2(src[3], (1 - dst[3]));
+ for (i = 0; i < 3; i++)
+ dst_vals[i] = dst[i] * a;
+ dst_vals[3] = dst[3];
+ break;
+ }
+
+ switch (blendop) {
+ case GL_FUNC_ADD:
+ for (i = 0 ; i < 4; i++)
+ expected[i] = src_vals[i] + dst_vals[i];
+ break;
+ case GL_FUNC_SUBTRACT:
+ for (i = 0 ; i < 4; i++) {
+ expected[i] = src_vals[i] - dst_vals[i];
+ if (expected[i] < 0)
+ expected[i] = 0;
+ }
+ break;
+ case GL_FUNC_REVERSE_SUBTRACT:
+ for (i = 0 ; i < 4; i++) {
+ expected[i] = dst_vals[i] - src_vals[i];
+ if (expected[i] < 0)
+ expected[i] = 0;
+ }
+ break;
+ case GL_MIN:
+ for (i = 0 ; i < 4; i++) {
+ expected[i] = MIN2(dst[i], src[i]);
+ }
+ break;
+ case GL_MAX:
+ for (i = 0 ; i < 4; i++) {
+ expected[i] = MAX2(dst[i], src[i]);
+ }
+ break;
+ }
+}
+
+static const char *vs_text =
+ "#version 130\n"
+ "void main() { gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex; gl_FrontColor = gl_Color; }\n"
+ ;
+
+static const char *fs_text =
+ "#version 130\n"
+ "uniform vec4 src1;\n"
+ "out vec4 col0;\n"
+ "out vec4 col1;\n"
+ "void main() {\n"
+ " col0 = gl_Color;\n"
+ " col1 = src1;\n"
+ "}\n"
+ ;
+
+static void
+create_fbo(void)
+{
+ GLuint rb[32];
+ int i;
+
+ glGenFramebuffersEXT(1, &FBO);
+ glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, FBO);
+
+ glGenRenderbuffersEXT(maxDSBuffers, rb);
+ check_error(__LINE__);
+
+ for (i = 0; i < maxDSBuffers; i++) {
+ glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, rb[i]);
+ check_error(__LINE__);
+
+ glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT,
+ GL_COLOR_ATTACHMENT0 + i,
+ GL_RENDERBUFFER_EXT,
+ rb[i]);
+ check_error(__LINE__);
+
+ glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_RGBA,
+ piglit_width, piglit_height);
+ check_error(__LINE__);
+ }
+}
+
+static enum piglit_result
+test(void)
+{
+ GLenum buffers;
+ static const GLfloat dest_color[4] = { 0.75, 0.25, 0.25, 0.5 };
+ static const GLfloat test_color[4] = { 1.0, 0.25, 0.75, 0.25 };
+ static const GLfloat test_color1[4] = { 0.5, 0.5, 0.5, 0.5 };
+ GLfloat expected[4];
+ GLuint prog;
+ GLuint vs;
+ GLuint fs;
+ GLfloat rect[4];
+ int i, j, k, o;
+
+ if (maxDSBuffers > 1) {
+ printf("Test only supports 1 dual source blending color buffer\n");
+ maxDSBuffers = 1;
+ }
+
+ prog = glCreateProgram();
+ vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vs_text);
+
+ fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, fs_text);
+ glAttachShader(prog, vs);
+ glAttachShader(prog, fs);
+ piglit_check_gl_error(GL_NO_ERROR);
+
+ glBindFragDataLocationIndexed(prog, 0, 0, "col0");
+ glBindFragDataLocationIndexed(prog, 0, 1, "col1");
+
+ create_fbo();
+
+ buffers = GL_COLOR_ATTACHMENT0_EXT;
+ glDrawBuffersARB(1, &buffers);
+
+ glLinkProgram(prog);
+ glUseProgram(prog);
+
+ uniform_src1 = glGetUniformLocation(prog, "src1");
+
+ /* Setup blend modes and compute expected result color.
+ * We only test two simple blending modes. A more elaborate
+ * test would exercise a much wider variety of modes.
+ */
+
+ for (o = 0; o < ARRAY_SIZE(operators); o++) {
+ for (i = 0; i < ARRAY_SIZE(srcFactors); i++) {
+ for (j = 0; j < ARRAY_SIZE(dstFactors); j++) {
+ blend_expected(expected, test_color, test_color1, dest_color, srcFactors[i], dstFactors[j], operators[o]);
+
+ rect[0] = 0;
+ rect[1] = 0;
+ rect[2] = piglit_width;
+ rect[3] = piglit_height;
+ blend(rect, test_color, test_color1, dest_color, srcFactors[i], dstFactors[j], operators[o]);
+ for (k = 0; k < maxDSBuffers; k++) {
+ glReadBuffer(GL_COLOR_ATTACHMENT0_EXT + k);
+ check_error(__LINE__);
+
+ if (!piglit_probe_pixel_rgba(5, 5, expected)) {
+ printf("For src/dst %d %d %d\n", i, j, o);
+ return PIGLIT_FAIL;
+ }
+ }
+ }
+ }
+ }
+
+
+ return PIGLIT_PASS;
+}
+
+enum piglit_result
+piglit_display(void)
+{
+ return test();
+}
+
+void
+piglit_init(int argc, char**argv)
+{
+ piglit_ortho_projection(piglit_width, piglit_height, GL_FALSE);
+
+ piglit_require_extension("GL_ARB_blend_func_extended");
+
+ glGetIntegerv(GL_MAX_DUAL_SOURCE_DRAW_BUFFERS, &maxDSBuffers);
+
+}
--
1.7.7.6
More information about the Piglit
mailing list