---
tests/all.py | 1 +
tests/shaders/CMakeLists.gl.txt | 1 +
tests/shaders/glsl-fs-discard-mrt.c | 199 ++++++++++++++++++++++++++++++++++++
3 files changed, 201 insertions(+)
create mode 100644 tests/shaders/glsl-fs-discard-mrt.c
diff --git a/tests/all.py b/tests/all.py
index 9f68690..58286e1 100644
--- a/tests/all.py
+++ b/tests/all.py
@@ -583,6 +583,7 @@ add_concurrent_test(shaders, 'glsl-unused-varying')
add_concurrent_test(shaders, 'glsl-fs-bug25902')
add_concurrent_test(shaders, 'glsl-fs-color-matrix')
add_concurrent_test(shaders, 'glsl-fs-discard-02')
+add_concurrent_test(shaders, 'glsl-fs-discard-mrt')
add_concurrent_test(shaders, 'glsl-fs-exp2')
add_concurrent_test(shaders, 'glsl-fs-flat-color')
add_concurrent_test(shaders, 'glsl-fs-fogcolor-statechange')
diff --git a/tests/shaders/CMakeLists.gl.txt b/tests/shaders/CMakeLists.gl.txt
index f1cf9dd..7c134ba 100644
--- a/tests/shaders/CMakeLists.gl.txt
+++ b/tests/shaders/CMakeLists.gl.txt
@@ -131,6 +131,7 @@ piglit_add_executable (vp-max-array vp-max-array.c)
piglit_add_executable (glsl-derivs glsl-derivs.c)
piglit_add_executable (glsl-deriv-varyings glsl-deriv-varyings.c)
piglit_add_executable (glsl-fs-discard-02 glsl-fs-discard-02.c)
+piglit_add_executable (glsl-fs-discard-mrt glsl-fs-discard-mrt.c)
piglit_add_executable (glsl-fwidth glsl-fwidth.c)
piglit_add_executable (glsl-lod-bias glsl-lod-bias.c)
piglit_add_executable (glsl-preprocessor-comments glsl-preprocessor-comments.c)
diff --git a/tests/shaders/glsl-fs-discard-mrt.c
b/tests/shaders/glsl-fs-discard-mrt.c
new file mode 100644
index 0000000..a8dd0fd
--- /dev/null
+++ b/tests/shaders/glsl-fs-discard-mrt.c
@@ -0,0 +1,199 @@
+/*
+ * Copyright © 2014 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.
+ *
+ */
+
+/** @file glsl-fs-discard-mrt.c
+ *
+ * Tests that discarding fragments works correctly when rendering to
+ * multiple render targets.
+ */
+
+#include "piglit-util-gl-common.h"
+
+#define TEX_W 64
+#define TEX_H 64
+#define STRIPE_SIZE 25
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+ config.supports_gl_compat_version = 10;
+
+ config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE
| PIGLIT_GL_VISUAL_DEPTH;
+
+ config.window_width = TEX_W * 2 + 60;
+ config.window_height = TEX_H + 40;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+static char vs_source[] =
+ "void main()\n"
+ "{\n"
+ " gl_Position = gl_Vertex;\n"
+ "}\n";
+
+static char fs_source[] =
+ "#extension GL_ARB_explicit_attrib_location : enable\n"
+ "\n"
+ "layout(location = 0) out vec4 fragcolor_0;\n"
+ "layout(location = 1) out vec4 fragcolor_1;\n"
+ "\n"
+ "void main()\n"
+ "{\n"
+ " if (gl_FragCoord.x > 25.0)\n"
+ " discard;\n"
+ " fragcolor_0 = vec4(0.0, 1.0, 0.0, 0.0); /* green */\n"
+ " fragcolor_1 = vec4(1.0, 0.0, 1.0, 0.0); /* magenta */\n"
+ "}\n";
+
+static GLuint
+setup_shader()
+{
+ GLuint vs, fs, prog;
+
+ vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vs_source);
+ fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, fs_source);
+ prog = piglit_link_simple_program(vs, fs);
+
+ glUseProgram(prog);
+ return prog;
+}
+
+static GLuint tex[2];
+
+static void
+make_and_bind_fbo()
+{
+ int i;
+ GLuint fbo;
+ static const GLenum buffers[] = {
+ GL_COLOR_ATTACHMENT0,
+ GL_COLOR_ATTACHMENT1
+ };
+
+ glGenFramebuffers(1, &fbo);
+ glBindFramebuffer(GL_FRAMEBUFFER, fbo);
+
+ glGenTextures(2, tex);
+
+ for (i = 0; i < 2; i++) {
+ glBindTexture(GL_TEXTURE_2D, tex[i]);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, TEX_W, TEX_H, 0,
+ GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
+ GL_NEAREST);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
+ GL_NEAREST);
+ glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + i,
+ GL_TEXTURE_2D, tex[i], 0);
+ }
+ glDrawBuffers(2, buffers);
+ if (glCheckFramebufferStatus(GL_FRAMEBUFFER) !=
+ GL_FRAMEBUFFER_COMPLETE) {
+ printf("Framebuffer not complete.\n");
+ piglit_report_result(PIGLIT_SKIP);
+ }
+}
+
+static void
+draw_to_fbo()
+{
+ GLint prog;
+
+ prog = setup_shader();
+
+ glClearColor(0, 0, 1, 0);
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ piglit_draw_rect(-1, -1, 2, 2);
+
+ assert(glGetError() == 0);
+
+ glDeleteProgram(prog);
+}
+
+static bool
+draw_fbo_to_screen_and_test(void)
+{
+ int i;
+ bool pass = true;
+ float green[4] = {0, 1, 0, 0};
+ float blue[4] = {0, 0, 1, 0};
+ float magenta[4] = {1, 0, 1, 0};
+
+ glUseProgram(0);
+ glBindFramebuffer(GL_FRAMEBUFFER, 0);
+
+ glClearColor(0.5, 0.5, 0.5, 0.5);
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ for (i = 0; i < 2; i++) {
+ int start_x = 20 + (TEX_W + 20) * i;
+ int start_y = 20;
+
+ piglit_ortho_projection(piglit_width, piglit_height, false);
+ glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+ glEnable(GL_TEXTURE_2D);
+ glBindTexture(GL_TEXTURE_2D, tex[i]);
+
+ piglit_draw_rect_tex(start_x, start_y,
+ TEX_W, TEX_H,
+ 0, 0,
+ 1, 1);
+
+ pass = pass & piglit_probe_rect_rgba(start_x,
+ start_y,
+ STRIPE_SIZE,
+ TEX_H,
+ i ? magenta : green);
+ pass = pass & piglit_probe_rect_rgba(start_x + STRIPE_SIZE,
+ start_y,
+ TEX_W - STRIPE_SIZE,
+ TEX_H,
+ blue);
+ }
+
+ return pass;
+}
+
+enum piglit_result
+piglit_display(void)
+{
+ bool pass = true;
+
+ make_and_bind_fbo();
+ draw_to_fbo();
+ pass = draw_fbo_to_screen_and_test();
+
+ piglit_present_results();
+
+ return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+void
+piglit_init(int argc, char **argv)
+{
+ piglit_require_GLSL();
+ piglit_require_extension("GL_ARB_explicit_attrib_location");
+ piglit_require_extension("GL_EXT_framebuffer_object");
+}
+
--
1.9.rc1
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