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authorBrian <brian.paul@tungstengraphics.com>2008-04-01 16:07:09 -0600
committerBrian <brian.paul@tungstengraphics.com>2008-04-01 16:07:09 -0600
commit792d524aed23f1b15c3e0e16e23ea2b815f79087 (patch)
tree937232ff9729708319aa5ac99bdc0f8083925df3 /progs
parentbccd3f138ccc717fad9073110d15e3321b590476 (diff)
mesa: measure fill rate for drawing a large quad with basic shading/texture modes
Diffstat (limited to 'progs')
-rw-r--r--progs/tests/Makefile8
-rw-r--r--progs/tests/fillrate.c203
2 files changed, 211 insertions, 0 deletions
diff --git a/progs/tests/Makefile b/progs/tests/Makefile
index ea34a70855..27e2eafdfc 100644
--- a/progs/tests/Makefile
+++ b/progs/tests/Makefile
@@ -40,6 +40,7 @@ SOURCES = \
fbotest1.c \
fbotest2.c \
fbotexture.c \
+ fillrate.c \
fog.c \
fogcoord.c \
fptest1.c \
@@ -166,6 +167,13 @@ mipmap_view.o: mipmap_view.c readtex.h
$(CC) -c $(INCLUDES) $(CFLAGS) $(DEFINES) $< -o $@
+fillrate: fillrate.o readtex.o
+ $(CC) $(CFLAGS) fillrate.o readtex.o $(LIBS) -o $@
+
+fillrate.o: fillrate.c readtex.h
+ $(CC) -c $(INCLUDES) $(CFLAGS) $(DEFINES) $< -o $@
+
+
readtex.o: readtex.c
$(CC) -c $(INCLUDES) $(CFLAGS) $(DEFINES) $< -o $@
diff --git a/progs/tests/fillrate.c b/progs/tests/fillrate.c
new file mode 100644
index 0000000000..dd25de2360
--- /dev/null
+++ b/progs/tests/fillrate.c
@@ -0,0 +1,203 @@
+/**
+ * Measure fill rates for basic shading/texturing modes.
+ *
+ * Brian Paul
+ * 1 April 2008
+ */
+
+
+#define GL_GLEXT_PROTOTYPES
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <GL/glut.h>
+#include "readtex.h"
+
+#define TEXTURE_1_FILE "../images/tile.rgb"
+#define TEXTURE_2_FILE "../images/reflect.rgb"
+
+static int Win;
+static int Width = 1010, Height = 1010;
+static GLuint Textures[2];
+
+
+/**
+ * Draw quad 10 pixels shorter, narrower than window size.
+ */
+static void
+DrawQuad(void)
+{
+ glBegin(GL_POLYGON);
+
+ glColor3f(1.0, 0.5, 0.5);
+ glMultiTexCoord2f(GL_TEXTURE0, 0, 0);
+ glMultiTexCoord2f(GL_TEXTURE1, 0, 0);
+ glVertex2f(5, 5);
+
+ glColor3f(0.5, 1.0, 0.5);
+ glMultiTexCoord2f(GL_TEXTURE0, 1, 0);
+ glMultiTexCoord2f(GL_TEXTURE1, 1, 0);
+ glVertex2f(Width - 5, 5);
+
+ glColor3f(0.5, 0.5, 1.0);
+ glMultiTexCoord2f(GL_TEXTURE0, 1, 1);
+ glMultiTexCoord2f(GL_TEXTURE1, 1, 1);
+ glVertex2f(Width - 5, Height - 5);
+
+ glColor3f(1.0, 0.5, 1.0);
+ glMultiTexCoord2f(GL_TEXTURE0, 0, 1);
+ glMultiTexCoord2f(GL_TEXTURE1, 0, 1);
+ glVertex2f(5, Height - 5);
+
+ glEnd();
+}
+
+
+/**
+ * Compute rate for drawing large quad with given shading/texture state.
+ */
+static void
+RunTest(GLenum shading, GLuint numTextures, GLenum texFilter)
+{
+ const GLdouble minPeriod = 2.0;
+ GLdouble t0, t1;
+ GLdouble texels, rate;
+ GLint i, iters;
+
+ glActiveTexture(GL_TEXTURE0);
+ if (numTextures > 0) {
+ glBindTexture(GL_TEXTURE_2D, Textures[0]);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, texFilter);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, texFilter);
+ glEnable(GL_TEXTURE_2D);
+ }
+ else {
+ glDisable(GL_TEXTURE_2D);
+ }
+
+ glActiveTexture(GL_TEXTURE1);
+ if (numTextures > 1) {
+ glBindTexture(GL_TEXTURE_2D, Textures[1]);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, texFilter);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, texFilter);
+ glEnable(GL_TEXTURE_2D);
+ }
+ else {
+ glDisable(GL_TEXTURE_2D);
+ }
+
+ glShadeModel(shading);
+
+
+ glFinish();
+
+ iters = 1;
+ do {
+ iters *= 4;
+ t0 = glutGet(GLUT_ELAPSED_TIME) * 0.001;
+ for (i = 0; i < iters; i++) {
+ DrawQuad();
+ }
+ glFinish();
+ t1 = glutGet(GLUT_ELAPSED_TIME) * 0.001;
+ } while (t1 - t0 < minPeriod);
+
+ glutSwapBuffers();
+
+ texels = iters * (Width - 10) * (Height - 10);
+ rate = texels / (t1 - t0);
+ rate /= 1000000.0; /* megatexels/second */
+
+ printf("%s ", shading == GL_FLAT ? "GL_FLAT" : "GL_SMOOTH");
+ printf("Textures=%u ", numTextures);
+ printf("Filter=%s: ", texFilter == GL_LINEAR ? "GL_LINEAR" : "GL_NEAREST");
+ printf("%g MPixels/sec\n", rate);
+}
+
+
+static void
+Draw(void)
+{
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ RunTest(GL_FLAT, 0, GL_NEAREST);
+ RunTest(GL_SMOOTH, 0, GL_NEAREST);
+ RunTest(GL_SMOOTH, 1, GL_NEAREST);
+ RunTest(GL_SMOOTH, 1, GL_LINEAR);
+ RunTest(GL_SMOOTH, 2, GL_NEAREST);
+ RunTest(GL_SMOOTH, 2, GL_LINEAR);
+
+ glutSwapBuffers();
+}
+
+
+static void
+Reshape(int width, int height)
+{
+ glViewport(0, 0, width, height);
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glOrtho(0, width, 0, height, -1, 1);
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+ Width = width;
+ Height = height;
+}
+
+
+static void
+Key(unsigned char key, int x, int y)
+{
+ (void) x;
+ (void) y;
+ switch (key) {
+ case 27:
+ glutDestroyWindow(Win);
+ exit(0);
+ break;
+ }
+ glutPostRedisplay();
+}
+
+
+static void
+Init(void)
+{
+ printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
+
+ glGenTextures(2, Textures);
+
+ glBindTexture(GL_TEXTURE_2D, Textures[0]);
+ glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+
+ if (!LoadRGBMipmaps(TEXTURE_1_FILE, GL_RGB)) {
+ printf("Error: couldn't load texture image\n");
+ exit(1);
+ }
+
+ glBindTexture(GL_TEXTURE_2D, Textures[1]);
+ glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+
+ if (!LoadRGBMipmaps(TEXTURE_2_FILE, GL_RGB)) {
+ printf("Error: couldn't load texture image\n");
+ exit(1);
+ }
+
+}
+
+
+int
+main(int argc, char *argv[])
+{
+ glutInit(&argc, argv);
+ glutInitWindowPosition(0, 0);
+ glutInitWindowSize(Width, Height);
+ glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
+ Win = glutCreateWindow(argv[0]);
+ glutReshapeFunc(Reshape);
+ glutKeyboardFunc(Key);
+ glutDisplayFunc(Draw);
+ Init();
+ glutMainLoop();
+ return 0;
+}