fbo-colormask-formats: test glColorMask with all formats

Reviewed-by: Brian Paul <brianp@vmware.com>

2 files changed, 228 insertions, 0 deletions

diff --git a/tests/fbo/CMakeLists.gl.txt b/tests/fbo/CMakeLists.gl.txt
index ed2f5688..d3e4bc99 100644
--- a/tests/fbo/CMakeLists.gl.txt
+++ b/tests/fbo/CMakeLists.gl.txt
@@ -34,6 +34,7 @@ piglit_add_executable (fbo-blit fbo-blit.c)
 piglit_add_executable (fbo-blit-d24s8 fbo-blit-d24s8.c)
 piglit_add_executable (fbo-blit-stretch fbo-blit-stretch.cpp)
 piglit_add_executable (fbo-blending-formats fbo-blending-formats.c)
+piglit_add_executable (fbo-colormask-formats fbo-colormask-formats.c)
 piglit_add_executable (fbo-copypix fbo-copypix.c)
 piglit_add_executable (fbo-readdrawpix fbo-readdrawpix.c)
 piglit_add_executable (fbo-clearmipmap fbo-clearmipmap.c)
diff --git a/tests/fbo/fbo-colormask-formats.c b/tests/fbo/fbo-colormask-formats.c
new file mode 100644
index 00000000..a55e2169
--- /dev/null
+++ b/tests/fbo/fbo-colormask-formats.c
@@ -0,0 +1,227 @@
+/*
+ * Copyright © 2010 Intel Corporation
+ * Copyright © 2012 Marek Olšák <maraeo@gmail.com>
+ *
+ * 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@gmail.com>
+ *
+ */
+
+#include "piglit-util-gl-common.h"
+#include "fbo-formats.h"
+
+PIGLIT_GL_TEST_MAIN(
+    512 /*window_width*/,
+    32 /*window_height*/,
+    GLUT_RGB | GLUT_ALPHA | GLUT_DOUBLE)
+
+/**
+ * Draw a quad with colormask
+ */
+static void colormask(const float *rect, unsigned mask)
+{
+	glColorMask(!!(mask & 1), !!(mask & 2), !!(mask & 4), !!(mask & 8));
+	piglit_draw_rect(rect[0], rect[1], rect[2], rect[3]);
+	glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+}
+
+static enum piglit_result test_format(const struct format_desc *format)
+{
+	GLboolean pass = GL_TRUE;
+	GLuint tex, fb;
+	GLenum status;
+	int r, g, b, l, a, i;
+	unsigned mask, k;
+	float defaults[] = {-1, -1, -1, -1};
+
+	if (format->base_internal_format == GL_DEPTH_COMPONENT ||
+	    format->base_internal_format == GL_DEPTH_STENCIL)
+		return PIGLIT_SKIP;
+
+	glGenFramebuffersEXT(1, &fb);
+	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb);
+	glViewport(0, 0, piglit_width, piglit_height);
+
+	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);
+	glTexImage2D(GL_TEXTURE_2D, 0, format->internalformat,
+		     piglit_width, piglit_height, 0,
+		     GL_RGBA, GL_FLOAT, NULL);
+
+	glGetTexLevelParameteriv(GL_TEXTURE_2D, 0,
+				 GL_TEXTURE_LUMINANCE_SIZE, &l);
+	glGetTexLevelParameteriv(GL_TEXTURE_2D, 0,
+				 GL_TEXTURE_ALPHA_SIZE, &a);
+	glGetTexLevelParameteriv(GL_TEXTURE_2D, 0,
+				 GL_TEXTURE_INTENSITY_SIZE, &i);
+	glGetTexLevelParameteriv(GL_TEXTURE_2D, 0,
+				 GL_TEXTURE_RED_SIZE, &r);
+	glGetTexLevelParameteriv(GL_TEXTURE_2D, 0,
+				 GL_TEXTURE_GREEN_SIZE, &g);
+	glGetTexLevelParameteriv(GL_TEXTURE_2D, 0,
+				 GL_TEXTURE_BLUE_SIZE, &b);
+
+	/* Set up expected defaults.
+	 * We're using glReadPixels from the texture.
+	 */
+	if (i) {
+		/* GL_INTENSITY texture:  result = (I,0,0,1) */
+		defaults[3] = 1;
+		defaults[2] = defaults[1] = 0;
+	} else if (l) {
+		/* GL_LUMINANCE texture:  result = (L,0,0,A) */
+		defaults[2] = defaults[1] = 0;
+		if (!a) {
+			defaults[3] = 1;
+		}
+	} else {
+		/* other format */
+		if (!r) {
+			defaults[0] = 0;
+		}
+		if (!g) {
+			defaults[1] = 0;
+		}
+		if (!b) {
+			defaults[2] = 0;
+		}
+		if (!a) {
+			defaults[3] = 1;
+		}
+	}
+
+	/* Clamp the bits for the framebuffer, except we aren't checking
+	 * the actual framebuffer bits.
+	 */
+	if (l > 8)
+		l = 8;
+	if (i > 8)
+		i = 8;
+	if (r > 8)
+		r = 8;
+	if (g > 8)
+		g = 8;
+	if (b > 8)
+		b = 8;
+	if (a > 8)
+		a = 8;
+
+	if (i) {
+		piglit_set_tolerance_for_bits(i, i, i, i);
+	} else if (l) {
+		piglit_set_tolerance_for_bits(l, l, l, a);
+	} else {
+		piglit_set_tolerance_for_bits(r, g, b, a);
+	}
+
+	glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,
+				  GL_COLOR_ATTACHMENT0_EXT,
+				  GL_TEXTURE_2D,
+				  tex,
+				  0);
+	assert(glGetError() == 0);
+
+	status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
+	printf("Testing %s", format->name);
+	if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
+		printf(" - fbo incomplete (status = 0x%04x)\n", status);
+		return PIGLIT_SKIP;
+	}
+	printf("\n");
+
+	glClearColor(0.0, 0.0, 0.0, 0.0);
+	glClear(GL_COLOR_BUFFER_BIT);
+
+	for (mask = 0; mask <= 15; mask++) {
+		float rect[4];
+		rect[0] = -1 + (mask / 8.0);
+		rect[1] = -1;
+		rect[2] = 2 / 16.0;
+		rect[3] = 2;
+
+		colormask(rect, mask);
+	}
+
+	for (mask = 0; mask <= 15; mask++) {
+		float color[4], out[4];
+
+		for (k = 0; k < 4; k++) {
+			if (defaults[k] >= 0)
+				color[k] = defaults[k];
+			else
+				color[k] = (mask & (1 << k)) ? 1 : 0;
+		}
+
+		if (!piglit_probe_pixel_rgba_silent(piglit_width * mask / 16, 0,
+						    color, out)) {
+			printf("glColorMask(%i, %i, %i, %i)\n",
+			       !!(mask & 1), !!(mask & 2),
+			       !!(mask & 4), !!(mask & 8));
+			printf("  Expected: %f %f %f %f\n",
+			       color[0], color[1], color[2], color[3]);
+			printf("  Observed: %f %f %f %f\n",
+			       out[0], out[1], out[2], out[3]);
+			pass = GL_FALSE;
+		}
+	}
+
+	/*
+	 * Display the texture.
+	 */
+	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
+	glViewport(0, 0, piglit_width, piglit_height);
+
+	glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
+	glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB,   GL_REPLACE);
+	glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_REPLACE);
+
+	glColor4f(1, 1, 1, 1);
+	glEnable(GL_TEXTURE_2D);
+	glBindTexture(GL_TEXTURE_2D, tex);
+	piglit_draw_rect_tex(-1, -1, 2, 2,
+			     0, 0, 1, 1);
+
+	glDisable(GL_TEXTURE_2D);
+	glDeleteTextures(1, &tex);
+	glDeleteFramebuffersEXT(1, &fb);
+
+	if (!pass) {
+		piglit_present_results();
+		return PIGLIT_FAIL;
+	}
+
+	piglit_present_results();
+
+	return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+enum piglit_result piglit_display(void)
+{
+	return fbo_formats_display(test_format);
+}
+
+void piglit_init(int argc, char **argv)
+{
+	fbo_formats_init(argc, argv, GL_TRUE);
+}