New test: general/texgen

4 files changed, 304 insertions, 0 deletions

diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index ee97546e3..606fd19ed 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -1,6 +1,7 @@
 
 add_subdirectory (util)
 add_subdirectory (bugs)
+add_subdirectory (general)
 add_subdirectory (glean)
 add_subdirectory (mesa)
 add_subdirectory (shaders)
diff --git a/tests/all.tests b/tests/all.tests
index 0ef39e015..194ab7b13 100644
--- a/tests/all.tests
+++ b/tests/all.tests
@@ -54,6 +54,9 @@ glean['vertProg1'] = GleanTest('vertProg1')
 mesa = Group()
 mesa['crossbar'] = PlainExecTest([testBinDir + 'crossbar', '-auto'])
 
+general = Group()
+general['texgen'] = PlainExecTest([testBinDir + 'texgen', '-auto'])
+
 shaders = Group()
 shaders['trinity-fp1'] = PlainExecTest([testBinDir + 'trinity-fp1', '-auto'])
 shaders['fp-lit-mask'] = PlainExecTest([testBinDir + 'fp-lit-mask', '-auto'])
@@ -80,6 +83,7 @@ texturing['texdepth'] = PlainExecTest([testBinDir + 'texdepth', '-auto'])
 texturing['texrect-many'] = PlainExecTest([testBinDir + 'texrect-many', '-auto'])
 
 profile.tests['bugs'] = bugs
+profile.tests['general'] = general
 profile.tests['glean'] = glean
 profile.tests['mesa'] = mesa
 profile.tests['shaders'] = shaders
diff --git a/tests/general/CMakeLists.txt b/tests/general/CMakeLists.txt
new file mode 100644
index 000000000..1e009e770
--- /dev/null
+++ b/tests/general/CMakeLists.txt
@@ -0,0 +1,21 @@
+
+include_directories(
+	${OPENGL_INCLUDE_PATH}
+	${GLUT_INCLUDE_DIR}
+	${piglit_SOURCE_DIR}/tests/util
+)
+
+link_directories (
+	${piglit_SOURCE_DIR}/tests/util
+)
+
+link_libraries (
+	${OPENGL_gl_LIBRARY}
+	${OPENGL_glu_LIBRARY}
+	${GLUT_glut_LIBRARY}
+	${TIFF_LIBRARY}
+	mesautil
+	piglitutil
+)
+
+add_executable (texgen texgen.c)
diff --git a/tests/general/texgen.c b/tests/general/texgen.c
new file mode 100644
index 000000000..42d882f61
--- /dev/null
+++ b/tests/general/texgen.c
@@ -0,0 +1,278 @@
+/*
+ * Copyright (c) The Piglit project 2008
+ *
+ * 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
+ * VA LINUX SYSTEM, IBM 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.
+ */
+
+/**
+ * @file
+ * Test a number of basic TexGen functions.
+ */
+
+#include <assert.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <GL/glut.h>
+
+#include "piglit-util.h"
+
+
+static int Width = 128, Height = 128;
+static int Automatic = 0;
+static int CurrentTest = 0;
+static int UseFragmentProgram = 0;
+
+/**
+ * The test uses a 4x4 clamped, nearest-filtered texture with the following
+ * RGB colors. The pattern matches what @ref TextureFP produces and is filled
+ * in in @ref Init.
+ */
+static GLfloat TextureData[4][4][3];
+
+/**
+ * Implement the inner part of the above texture in a fragment program.
+ */
+static const char TextureFP[] =
+"!!ARBfp1.0\n"
+"TEMP r0;\n"
+"MUL r0, fragment.texcoord, 4;\n"
+"FLR r0, r0;\n"
+"MUL result.color, r0, 0.25;\n"
+"END\n";
+
+static void probe_cell(const char* testname, int x, int y, const float* expected)
+{
+	if (!piglit_probe_pixel_rgb((2*x+1)*Width/8, (2*y+1)*Height/8, expected)) {
+		fprintf(stderr, "%s: %i,%i failed\n", testname, x, y);
+		if (Automatic)
+			piglit_report_result(PIGLIT_FAILURE);
+	}
+}
+
+/**
+ * Sanity test whether the texture is rendered correctly at all.
+ */
+static void test_sanity()
+{
+	int x, y;
+
+	glClearColor(0.5, 0.5, 0.5, 1.0);
+	glClear(GL_COLOR_BUFFER_BIT);
+
+	glBegin(GL_QUADS);
+		glTexCoord2f(0, 0);
+		glVertex2f(0, 0);
+		glTexCoord2f(1, 0);
+		glVertex2f(1, 0);
+		glTexCoord2f(1, 1);
+		glVertex2f(1, 1);
+		glTexCoord2f(0, 1);
+		glVertex2f(0, 1);
+	glEnd();
+
+	glutSwapBuffers();
+	glReadBuffer(GL_FRONT);
+
+	for(y = 0; y < 4; ++y) {
+		for(x = 0; x < 4; ++x)
+			probe_cell("test_sanity", x, y, TextureData[y][x]);
+	}
+}
+
+static void do_test_texgen_eye(const char* testname)
+{
+	static GLfloat sPlane1[4] = { 1.0, 0.0, 0.0, 0.25 };
+	static GLfloat sPlane2[4] = { 1.0, 0.0, 0.0, -0.25 };
+	static GLfloat sPlane3[4] = { -1.0, 0.0, 0.0, 1.25 };
+	int x, y;
+
+	glClearColor(0.5, 0.5, 0.5, 1.0);
+	glClear(GL_COLOR_BUFFER_BIT);
+
+	// Note: Modelview matrix is identity
+	glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
+	glTexGenfv(GL_S, GL_EYE_PLANE, sPlane1);
+	glEnable(GL_TEXTURE_GEN_S);
+
+	// Draw lower left quad
+	glBegin(GL_QUADS);
+		glTexCoord2f(0, 0.25); glVertex2f(0.0, 0.0);
+		glTexCoord2f(0, 0.25); glVertex2f(0.5, 0.0);
+		glTexCoord2f(0, 0.75); glVertex2f(0.5, 0.5);
+		glTexCoord2f(0, 0.75); glVertex2f(0.0, 0.5);
+	glEnd();
+
+	// Draw lower right quad
+	glTexGenfv(GL_S, GL_EYE_PLANE, sPlane2);
+	glPushMatrix();
+	glTranslatef(0.5, -0.5, 0.0);
+	glScalef(2.0, 1.0, 1.0);
+	glBegin(GL_QUADS);
+		glTexCoord2f(0, 0.25); glVertex2f(0.0,  0.5);
+		glTexCoord2f(0, 0.25); glVertex2f(0.25, 0.5);
+		glTexCoord2f(0, 0.75); glVertex2f(0.25, 1.0);
+		glTexCoord2f(0, 0.75); glVertex2f(0.0,  1.0);
+	glEnd();
+	glPopMatrix();
+
+	// Draw upper left quad
+	glPushMatrix();
+	glTranslatef(1.0, 0.5, 0.0);
+	glScalef(-1.0, 1.0, 1.0);
+	glTexGenfv(GL_S, GL_EYE_PLANE, sPlane3);
+	glBegin(GL_QUADS);
+		glTexCoord2f(0, 0.25); glVertex2f(1.0, 0.0);
+		glTexCoord2f(0, 0.25); glVertex2f(0.5, 0.0);
+		glTexCoord2f(0, 0.75); glVertex2f(0.5, 0.5);
+		glTexCoord2f(0, 0.75); glVertex2f(1.0, 0.5);
+	glEnd();
+	glPopMatrix();
+
+	glDisable(GL_TEXTURE_GEN_S);
+
+	glutSwapBuffers();
+	glReadBuffer(GL_FRONT);
+
+	for(y = 0; y < 2; ++y) {
+		for(x = 0; x < 2; ++x)
+			probe_cell(testname, x, y, TextureData[y+1][x+1]);
+	}
+}
+
+static void test_texgen_eye()
+{
+	do_test_texgen_eye("test_texgen_eye");
+}
+
+static void test_texgen_eye_fp()
+{
+	if (UseFragmentProgram) {
+		glEnable(GL_FRAGMENT_PROGRAM_ARB);
+		do_test_texgen_eye("test_texgen_eye_fp");
+		glDisable(GL_FRAGMENT_PROGRAM_ARB);
+	}
+}
+
+static struct {
+	const char* name;
+	void (*function)();
+} Tests[] = {
+	{ "sanity", &test_sanity },
+	{ "texgen_eye", &test_texgen_eye },
+	{ "texgen_eye_fp", &test_texgen_eye_fp }
+};
+#define NrTests (ARRAY_SIZE(Tests))
+
+static void Redisplay(void)
+{
+	if (Automatic) {
+		int i;
+		for(i = 0; i < NrTests; ++i)
+			Tests[i].function();
+
+		piglit_report_result(PIGLIT_SUCCESS);
+	} else {
+		Tests[CurrentTest].function();
+	}
+}
+
+
+static void Reshape(int width, int height)
+{
+	Width = width;
+	Height = height;
+	glViewport(0, 0, width, height);
+	glMatrixMode(GL_PROJECTION);
+	glLoadIdentity();
+	glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);
+	glMatrixMode(GL_MODELVIEW);
+	glLoadIdentity();
+}
+
+
+static void Init(void)
+{
+	int x, y;
+
+	if (piglit_use_fragment_program()) {
+		UseFragmentProgram = 1;
+		pglBindProgramARB(GL_FRAGMENT_PROGRAM_ARB,
+			piglit_compile_program(GL_FRAGMENT_PROGRAM_ARB, TextureFP));
+	}
+
+	for(y = 0; y < 4; ++y) {
+		for(x = 0; x < 4; ++x) {
+			TextureData[y][x][0] = x * 0.25;
+			TextureData[y][x][1] = y * 0.25;
+			TextureData[y][x][2] = 0.0;
+		}
+	}
+
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
+	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 4, 4, 0, GL_RGB, GL_FLOAT, TextureData);
+	glEnable(GL_TEXTURE_2D);
+
+	Reshape(Width,Height);
+}
+
+static void Key(unsigned char key, int x, int y)
+{
+	(void) x;
+	(void) y;
+	switch (key) {
+	case 't':
+		CurrentTest++;
+		if (CurrentTest >= NrTests)
+			CurrentTest = 0;
+		printf("Test: %s\n", Tests[CurrentTest].name);
+		break;
+	case 27:
+		exit(0);
+		break;
+	}
+	glutPostRedisplay();
+}
+
+int main(int argc, char *argv[])
+{
+	int i;
+	glutInit(&argc, argv);
+	if (argc == 2 && !strcmp(argv[1], "-auto"))
+		Automatic = 1;
+	glutInitWindowPosition(0, 0);
+	glutInitWindowSize(Width, Height);
+	glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
+	glutCreateWindow(argv[0]);
+	glutReshapeFunc(Reshape);
+	glutDisplayFunc(Redisplay);
+	if (!Automatic) {
+		printf("Press 't' to switch tests; Escape to quit\n");
+		glutKeyboardFunc(Key);
+	}
+	Init();
+	glutMainLoop();
+	return 0;
+}
+