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-rw-r--r--progs/tests/.gitignore17
-rw-r--r--progs/tests/Makefile1
-rw-r--r--progs/tests/SConscript1
-rw-r--r--progs/tests/antialias.c71
-rw-r--r--progs/tests/fbotest1.c6
-rw-r--r--progs/tests/fbotest2.c52
-rw-r--r--progs/tests/fbotest3.c6
-rw-r--r--progs/tests/stencil_twoside.c85
-rw-r--r--progs/tests/stencilreaddraw.c187
-rw-r--r--progs/tests/zreaddraw.c61
10 files changed, 393 insertions, 94 deletions
diff --git a/progs/tests/.gitignore b/progs/tests/.gitignore
index d905fab611..37be27fff2 100644
--- a/progs/tests/.gitignore
+++ b/progs/tests/.gitignore
@@ -1,4 +1,3 @@
-.cvsignore
afsmultiarb
antialias
arbfpspec
@@ -17,6 +16,7 @@ auxbuffer
blendminmax
blendsquare
blendxor
+blitfb
bufferobj
bug_3050
bug_3101
@@ -28,12 +28,16 @@ condrender
copypixrate
crossbar
cva
+cva_huge
+cylwrap
drawbuffers
drawbuffers2
-extfuncs.h
exactrast
+ext422square
+extfuncs.h
fbotest1
fbotest2
+fbotest3
fillrate
floattex
fog
@@ -58,10 +62,12 @@ mipmap_comp_tests
mipmap_limits
mipmap_view
multipal
+multitexarray
+multiwindow
no_s3tc
packedpixels
-persp_hint
pbo
+persp_hint
prim
prog_parameter
quads
@@ -77,6 +83,7 @@ shader_api
shaderutil.c
shaderutil.h
sharedtex
+stencilreaddraw
stencil_twoside
stencilwrap
stencil_wrap
@@ -84,10 +91,13 @@ streaming_rect
subtex
subtexrate
tex1d
+texcmp
texcompress2
texcompsub
texdown
texfilt
+texgenmix
+texleak
texline
texobj
texobjshare
@@ -97,6 +107,7 @@ unfilledclip
vao-01
vao-02
vparray
+vpeval
vptest1
vptest2
vptest3
diff --git a/progs/tests/Makefile b/progs/tests/Makefile
index 6bb0249e17..0f938f9b0c 100644
--- a/progs/tests/Makefile
+++ b/progs/tests/Makefile
@@ -90,6 +90,7 @@ SOURCES = \
seccolor.c \
shader_api.c \
sharedtex.c \
+ stencilreaddraw.c \
stencil_twoside.c \
stencilwrap.c \
stencil_wrap.c \
diff --git a/progs/tests/SConscript b/progs/tests/SConscript
index 037a0c35da..429d3bb957 100644
--- a/progs/tests/SConscript
+++ b/progs/tests/SConscript
@@ -89,6 +89,7 @@ progs = [
'scissor-viewport',
'seccolor',
'shader_api',
+ 'stencilreaddraw',
'stencil_twoside',
'stencil_wrap',
'stencilwrap',
diff --git a/progs/tests/antialias.c b/progs/tests/antialias.c
index 656bf2471f..a6456a5218 100644
--- a/progs/tests/antialias.c
+++ b/progs/tests/antialias.c
@@ -30,15 +30,17 @@ PrintString(const char *s)
static void
-doPolygon( GLint verts, GLfloat radius, GLfloat z )
+doPolygon( GLenum mode, GLint verts, GLfloat radius, GLfloat z )
{
int i;
+ glBegin(mode);
for (i = 0; i < verts; i++) {
float a = (i * 2.0 * 3.14159) / verts;
float x = radius * cos(a);
float y = radius * sin(a);
glVertex3f(x, y, z);
}
+ glEnd();
}
@@ -47,35 +49,23 @@ DrawObject( void )
{
glLineWidth(3.0);
glColor3f(1, 1, 1);
- glBegin(GL_LINE_LOOP);
- doPolygon(12, 1.2, 0);
- glEnd();
+ doPolygon(GL_LINE_LOOP, 12, 1.2, 0);
glLineWidth(1.0);
glColor3f(1, 1, 1);
- glBegin(GL_LINE_LOOP);
- doPolygon(12, 1.1, 0);
- glEnd();
+ doPolygon(GL_LINE_LOOP, 12, 1.1, 0);
glColor3f(1, 0, 0);
- glBegin(GL_POLYGON);
- doPolygon(12, 0.4, 0.3);
- glEnd();
+ doPolygon(GL_POLYGON, 12, 0.4, 0.3);
glColor3f(0, 1, 0);
- glBegin(GL_POLYGON);
- doPolygon(12, 0.6, 0.2);
- glEnd();
+ doPolygon(GL_POLYGON, 12, 0.6, 0.2);
glColor3f(0, 0, 1);
- glBegin(GL_POLYGON);
- doPolygon(12, 0.8, 0.1);
- glEnd();
+ doPolygon(GL_POLYGON, 12, 0.8, 0.1);
glColor3f(1, 1, 1);
- glBegin(GL_POLYGON);
- doPolygon(12, 1.0, 0);
- glEnd();
+ doPolygon(GL_POLYGON, 12, 1.0, 0);
}
@@ -85,43 +75,46 @@ Display( void )
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
glColor3f(1, 1, 1);
+
+ glRasterPos2f(-3.1, -1.6);
+ PrintString("No antialiasing");
+
+ glRasterPos2f(-0.8, -1.6);
if (HaveMultisample) {
- glRasterPos2f(-3.1, -1.6);
if (DoMultisample)
- PrintString("MULTISAMPLE");
+ PrintString(" MULTISAMPLE");
else
PrintString("MULTISAMPLE (off)");
}
- glRasterPos2f(-0.8, -1.6);
- PrintString("No antialiasing");
+ else
+ PrintString("MULTISAMPLE (N/A)");
+
glRasterPos2f(1.6, -1.6);
PrintString("GL_POLYGON_SMOOTH");
- /* multisample */
- if (HaveMultisample) {
- glEnable(GL_DEPTH_TEST);
- if (DoMultisample)
- glEnable(GL_MULTISAMPLE_ARB);
- glPushMatrix();
- glTranslatef(-2.5, 0, 0);
- glPushMatrix();
- glRotatef(Zrot, 0, 0, 1);
- DrawObject();
- glPopMatrix();
- glPopMatrix();
- glDisable(GL_MULTISAMPLE_ARB);
- glDisable(GL_DEPTH_TEST);
- }
-
/* non-aa */
glEnable(GL_DEPTH_TEST);
glPushMatrix();
+ glTranslatef(-2.5, 0, 0);
+ glPushMatrix();
+ glRotatef(Zrot, 0, 0, 1);
+ DrawObject();
+ glPopMatrix();
+ glPopMatrix();
+ glDisable(GL_DEPTH_TEST);
+
+ /* multisample */
+ glEnable(GL_DEPTH_TEST);
+ if (HaveMultisample && DoMultisample)
+ glEnable(GL_MULTISAMPLE_ARB);
+ glPushMatrix();
glTranslatef(0, 0, 0);
glPushMatrix();
glRotatef(Zrot, 0, 0, 1);
DrawObject();
glPopMatrix();
glPopMatrix();
+ glDisable(GL_MULTISAMPLE_ARB);
glDisable(GL_DEPTH_TEST);
/* polygon smooth */
diff --git a/progs/tests/fbotest1.c b/progs/tests/fbotest1.c
index 0cd7f95c35..a95fdff74c 100644
--- a/progs/tests/fbotest1.c
+++ b/progs/tests/fbotest1.c
@@ -36,8 +36,8 @@ Display( void )
/* draw to user framebuffer */
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, MyFB);
- glDrawBuffer(GL_COLOR_ATTACHMENT1_EXT);
- glReadBuffer(GL_COLOR_ATTACHMENT1_EXT);
+ glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT);
+ glReadBuffer(GL_COLOR_ATTACHMENT0_EXT);
status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
@@ -161,7 +161,7 @@ Init( void )
assert(i == MyFB);
CheckError(__LINE__);
- glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT1_EXT,
+ glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
GL_RENDERBUFFER_EXT, MyRB);
glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_RGB, Width, Height);
diff --git a/progs/tests/fbotest2.c b/progs/tests/fbotest2.c
index f9c506193f..faf0dd8748 100644
--- a/progs/tests/fbotest2.c
+++ b/progs/tests/fbotest2.c
@@ -33,15 +33,16 @@ CheckError(int line)
static void
Display( void )
{
- GLubyte *buffer = malloc(Width * Height * 4);
+ GLboolean copyPix = GL_FALSE;
+ GLboolean blitPix = GL_FALSE;
GLenum status;
CheckError(__LINE__);
/* draw to user framebuffer */
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, MyFB);
- glDrawBuffer(GL_COLOR_ATTACHMENT1_EXT);
- glReadBuffer(GL_COLOR_ATTACHMENT1_EXT);
+ glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT);
+ glReadBuffer(GL_COLOR_ATTACHMENT0_EXT);
status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
@@ -63,16 +64,43 @@ Display( void )
glutSolidTeapot(2.0);
glPopMatrix();
- /* read from user framebuffer */
- glReadPixels(0, 0, Width, Height, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
+ if (copyPix) {
+ glBindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, MyFB);
+ glReadBuffer(GL_COLOR_ATTACHMENT0_EXT);
+ glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, 0);
+ glDrawBuffer(GL_BACK);
- /* draw to window */
- glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
- glDisable(GL_DEPTH_TEST); /* in case window has depth buffer */
- glWindowPos2iARB(0, 0);
- glDrawPixels(Width, Height, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
+ glDisable(GL_DEPTH_TEST); /* in case window has depth buffer */
+
+ glWindowPos2iARB(0, 0);
+ glCopyPixels(0, 0, Width, Height, GL_COLOR);
+ }
+ else if (blitPix) {
+ glBindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, MyFB);
+ glReadBuffer(GL_COLOR_ATTACHMENT0_EXT);
+ glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, 0);
+ glDrawBuffer(GL_BACK);
+
+ glDisable(GL_DEPTH_TEST); /* in case window has depth buffer */
+
+ glBlitFramebufferEXT(0, 0, Width, Height,
+ 0, 0, Width, Height,
+ GL_COLOR_BUFFER_BIT, GL_NEAREST);
+ }
+ else {
+ GLubyte *buffer = malloc(Width * Height * 4);
+ /* read from user framebuffer */
+ glReadPixels(0, 0, Width, Height, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
+
+ /* draw to window */
+ glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
+ glDisable(GL_DEPTH_TEST); /* in case window has depth buffer */
+ glWindowPos2iARB(0, 0);
+ glDrawPixels(Width, Height, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
+
+ free(buffer);
+ }
- free(buffer);
glutSwapBuffers();
CheckError(__LINE__);
}
@@ -163,7 +191,7 @@ Init( void )
glGenRenderbuffersEXT(1, &ColorRb);
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, ColorRb);
assert(glIsRenderbufferEXT(ColorRb));
- glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT1_EXT,
+ glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
GL_RENDERBUFFER_EXT, ColorRb);
glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_RGB, Width, Height);
diff --git a/progs/tests/fbotest3.c b/progs/tests/fbotest3.c
index 8e288b38b8..c176f82d2b 100644
--- a/progs/tests/fbotest3.c
+++ b/progs/tests/fbotest3.c
@@ -50,8 +50,8 @@ Display( void )
/* draw to user framebuffer */
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, MyFB);
- glDrawBuffer(GL_COLOR_ATTACHMENT1_EXT);
- glReadBuffer(GL_COLOR_ATTACHMENT1_EXT);
+ glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT);
+ glReadBuffer(GL_COLOR_ATTACHMENT0_EXT);
status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
@@ -189,7 +189,7 @@ Init( void )
glGenRenderbuffersEXT(1, &ColorRb);
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, ColorRb);
assert(glIsRenderbufferEXT(ColorRb));
- glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT1_EXT,
+ glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
GL_RENDERBUFFER_EXT, ColorRb);
glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_RGB, Width, Height);
diff --git a/progs/tests/stencil_twoside.c b/progs/tests/stencil_twoside.c
index 7d871e5877..1010139a20 100644
--- a/progs/tests/stencil_twoside.c
+++ b/progs/tests/stencil_twoside.c
@@ -26,7 +26,7 @@
* \file stencil_twoside.c
*
* Simple test of GL_ATI_separate_stencil (or the OGL 2.0 equivalent) functionality.
- * Four squares are drawn
+ * Five squares (or six if stencil wrap is available) are drawn
* with different stencil modes, but all should be rendered with the same
* final color.
*/
@@ -37,7 +37,7 @@
#include <GL/glut.h>
static int use20syntax = 1;
-static int Width = 550;
+static int Width = 650;
static int Height = 200;
static const GLfloat Near = 5.0, Far = 25.0;
@@ -70,7 +70,7 @@ static void Display( void )
*/
glDisable(GL_STENCIL_TEST);
- glTranslatef(-6.0, 0, 0);
+ glTranslatef(-7.0, 0, 0);
glBegin(GL_QUADS);
glColor3f( 0.5, 0.5, 0.5 );
glVertex2f(-1, -1);
@@ -85,6 +85,9 @@ static void Display( void )
/* Draw the first two squares using incr for the affected face
*/
+ /*************************************************************************
+ * 2nd square
+ */
if (use20syntax) {
stencil_func_separate(GL_FRONT, GL_ALWAYS, 0, ~0);
stencil_func_separate(GL_BACK, GL_ALWAYS, 0, ~0);
@@ -98,8 +101,8 @@ static void Display( void )
glTranslatef(3.0, 0, 0);
glBegin(GL_QUADS);
glColor3f( 0.9, 0.9, 0.9 );
- /* this should be front facing */
for ( i = 0 ; i < (max_stencil + 5) ; i++ ) {
+ /* this should be front facing */
glVertex2f(-1, -1);
glVertex2f( 1, -1);
glVertex2f( 1, 1);
@@ -107,6 +110,7 @@ static void Display( void )
}
glEnd();
+ /* stencil vals should be equal to max_stencil */
glStencilFunc(GL_EQUAL, max_stencil, ~0);
glBegin(GL_QUADS);
glColor3f( 0.5, 0.5, 0.5 );
@@ -116,6 +120,9 @@ static void Display( void )
glVertex2f(-1, 1);
glEnd();
+ /*************************************************************************
+ * 3rd square
+ */
if (use20syntax) {
stencil_func_separate(GL_FRONT, GL_ALWAYS, 0, ~0);
stencil_func_separate(GL_BACK, GL_ALWAYS, 0, ~0);
@@ -129,9 +136,8 @@ static void Display( void )
glTranslatef(3.0, 0, 0);
glBegin(GL_QUADS);
glColor3f( 0.9, 0.9, 0.9 );
-
- /* this should be back facing */
for ( i = 0 ; i < (max_stencil + 5) ; i++ ) {
+ /* this should be back facing */
glVertex2f(-1, -1);
glVertex2f(-1, 1);
glVertex2f( 1, 1);
@@ -139,6 +145,7 @@ static void Display( void )
}
glEnd();
+ /* stencil vals should be equal to max_stencil */
glStencilFunc(GL_EQUAL, max_stencil, ~0);
glBegin(GL_QUADS);
glColor3f( 0.5, 0.5, 0.5 );
@@ -148,6 +155,9 @@ static void Display( void )
glVertex2f(-1, 1);
glEnd();
+ /*************************************************************************
+ * 4th square
+ */
if (use20syntax) {
stencil_func_separate(GL_FRONT, GL_NEVER, 0, ~0);
stencil_func_separate(GL_BACK, GL_ALWAYS, 0, ~0);
@@ -161,15 +171,13 @@ static void Display( void )
glTranslatef(3.0, 0, 0);
glBegin(GL_QUADS);
glColor3f( 0.9, 0.9, 0.9 );
-
- /* this should be back facing */
for ( i = 0 ; i < (max_stencil + 5) ; i++ ) {
- /* this should be back facing */
+ /* this should be back facing */
glVertex2f(-1, -1);
glVertex2f(-1, 1);
glVertex2f( 1, 1);
glVertex2f( 1, -1);
- /* this should be front facing */
+ /* this should be front facing */
glVertex2f(-1, -1);
glVertex2f( 1, -1);
glVertex2f( 1, 1);
@@ -177,6 +185,7 @@ static void Display( void )
}
glEnd();
+ /* stencil vals should be equal to max_stencil */
glStencilFunc(GL_EQUAL, max_stencil, ~0);
glBegin(GL_QUADS);
glColor3f( 0.5, 0.5, 0.5 );
@@ -186,6 +195,9 @@ static void Display( void )
glVertex2f(-1, 1);
glEnd();
+ /*************************************************************************
+ * 5th square
+ */
if (use20syntax) {
stencil_func_separate(GL_FRONT, GL_ALWAYS, 0, ~0);
stencil_func_separate(GL_BACK, GL_ALWAYS, 0, ~0);
@@ -193,21 +205,19 @@ static void Display( void )
else {
stencil_func_separate_ati(GL_ALWAYS, GL_ALWAYS, 0, ~0);
}
- stencil_op_separate(GL_FRONT, GL_KEEP, GL_KEEP, GL_DECR);
- stencil_op_separate(GL_BACK, GL_KEEP, GL_KEEP, GL_INCR);
+ stencil_op_separate(GL_FRONT, GL_KEEP, GL_KEEP, GL_INCR);
+ stencil_op_separate(GL_BACK, GL_KEEP, GL_KEEP, GL_DECR);
glTranslatef(3.0, 0, 0);
glBegin(GL_QUADS);
glColor3f( 0.9, 0.9, 0.9 );
-
- /* this should be back facing */
for ( i = 0 ; i < (max_stencil + 5) ; i++ ) {
- /* this should be back facing */
+ /* this should be back facing */
glVertex2f(-1, -1);
glVertex2f(-1, 1);
glVertex2f( 1, 1);
glVertex2f( 1, -1);
- /* this should be front facing */
+ /* this should be front facing */
glVertex2f(-1, -1);
glVertex2f( 1, -1);
glVertex2f( 1, 1);
@@ -224,6 +234,47 @@ static void Display( void )
glVertex2f(-1, 1);
glEnd();
+ /*************************************************************************
+ * 6th square
+ */
+ if (glutExtensionSupported("GL_EXT_stencil_wrap")) {
+ if (use20syntax) {
+ stencil_func_separate(GL_FRONT, GL_ALWAYS, 0, ~0);
+ stencil_func_separate(GL_BACK, GL_ALWAYS, 0, ~0);
+ }
+ else {
+ stencil_func_separate_ati(GL_ALWAYS, GL_ALWAYS, 0, ~0);
+ }
+ stencil_op_separate(GL_FRONT, GL_KEEP, GL_KEEP, GL_KEEP);
+ stencil_op_separate(GL_BACK, GL_KEEP, GL_KEEP, GL_INCR_WRAP);
+
+ glTranslatef(3.0, 0, 0);
+ glBegin(GL_QUADS);
+ glColor3f( 0.9, 0.9, 0.9 );
+ for ( i = 0 ; i < (max_stencil + 5) ; i++ ) {
+ /* this should be back facing */
+ glVertex2f(-1, -1);
+ glVertex2f(-1, 1);
+ glVertex2f( 1, 1);
+ glVertex2f( 1, -1);
+ /* this should be front facing */
+ glVertex2f(-1, -1);
+ glVertex2f( 1, -1);
+ glVertex2f( 1, 1);
+ glVertex2f(-1, 1);
+ }
+ glEnd();
+
+ glStencilFunc(GL_EQUAL, 260 - 255, ~0);
+ glBegin(GL_QUADS);
+ glColor3f( 0.5, 0.5, 0.5 );
+ glVertex2f(-1, -1);
+ glVertex2f( 1, -1);
+ glVertex2f( 1, 1);
+ glVertex2f(-1, 1);
+ glEnd();
+ }
+
glPopMatrix();
glutSwapBuffers();
@@ -278,7 +329,7 @@ static void Init( void )
stencil_func_separate_ati = (PFNGLSTENCILFUNCSEPARATEATIPROC) glutGetProcAddress( "glStencilFuncSeparateATI" );
stencil_op_separate = (PFNGLSTENCILOPSEPARATEPROC) glutGetProcAddress( "glStencilOpSeparate" );
- printf("\nAll 5 squares should be the same color.\n");
+ printf("\nAll 5 (or 6) squares should be the same color.\n");
}
diff --git a/progs/tests/stencilreaddraw.c b/progs/tests/stencilreaddraw.c
new file mode 100644
index 0000000000..84a5a922a0
--- /dev/null
+++ b/progs/tests/stencilreaddraw.c
@@ -0,0 +1,187 @@
+/*
+ * Test glRead/DrawPixels for GL_STENCIL_INDEX, with pixelzoom.
+ *
+ * Brian Paul
+ * 8 April 2010
+ */
+
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <GL/glew.h>
+#include <GL/glut.h>
+
+static GLint WinWidth = 500, WinHeight = 500;
+static GLboolean TestPacking = GL_FALSE;
+static GLboolean TestList = GL_FALSE;
+
+
+static GLuint StencilValue = 192;
+
+static void Display(void)
+{
+ GLubyte stencil[100 * 100 * 2];
+ GLubyte stencil2[400 * 400]; /* *2 to test pixelstore stuff */
+ GLuint list;
+
+ glClearColor(0.5, 0.5, 0.5, 1.0);
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
+
+ glEnable(GL_DEPTH_TEST);
+
+ glStencilOp(GL_INVERT, GL_KEEP, GL_REPLACE);
+ glStencilFunc(GL_ALWAYS, StencilValue, ~0);
+ glEnable(GL_STENCIL_TEST);
+
+ /* draw a sphere */
+ glViewport(0, 0, 100, 100);
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glOrtho(-1, 1, -1, 1, -1, 0); /* clip away back half of sphere */
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+ glutSolidSphere(1.0, 20, 10);
+
+ glDisable(GL_STENCIL_TEST);
+
+ if (TestPacking) {
+ glPixelStorei(GL_PACK_ROW_LENGTH, 120);
+ glPixelStorei(GL_PACK_SKIP_PIXELS, 5);
+ }
+
+ /* read the stencil image */
+ glReadPixels(0, 0, 100, 100, GL_STENCIL_INDEX, GL_UNSIGNED_BYTE, stencil);
+ {
+ GLubyte min, max;
+ int i;
+ min = max = stencil[0];
+ for (i = 1; i < 100 * 100; i++) {
+ if (stencil[i] < min)
+ min = stencil[i];
+ if (stencil[i] > max)
+ max = stencil[i];
+ }
+ printf("Stencil value range: [%u, %u]\n", min, max);
+ if (max != StencilValue) {
+ printf("Error: expected max stencil val of %u, found %u\n",
+ StencilValue, max);
+ }
+ }
+
+ /* Draw the Z image as luminance above original rendering */
+ glWindowPos2i(0, 100);
+ glDrawPixels(100, 100, GL_LUMINANCE, GL_UNSIGNED_BYTE, stencil);
+
+ if (1) {
+ if (TestPacking) {
+ glPixelStorei(GL_PACK_ROW_LENGTH, 0);
+ glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
+ glPixelStorei(GL_UNPACK_ROW_LENGTH, 120);
+ glPixelStorei(GL_UNPACK_SKIP_PIXELS, 5);
+ }
+
+ /* draw stencil image with scaling (into stencil buffer) */
+ glPixelZoom(4.0, 4.0);
+ glColor4f(1, 0, 0, 0);
+ glWindowPos2i(100, 0);
+
+ if (TestList) {
+ list = glGenLists(1);
+ glNewList(list, GL_COMPILE);
+ glDrawPixels(100, 100, GL_STENCIL_INDEX, GL_UNSIGNED_BYTE, stencil);
+ glEndList();
+ glCallList(list);
+ glDeleteLists(list, 1);
+ }
+ else {
+ glDrawPixels(100, 100, GL_STENCIL_INDEX, GL_UNSIGNED_BYTE, stencil);
+ }
+
+ if (TestPacking) {
+ glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
+ glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
+ }
+
+ /* read back scaled stencil image */
+ glReadPixels(100, 0, 400, 400, GL_STENCIL_INDEX,
+ GL_UNSIGNED_BYTE, stencil2);
+ /* draw as luminance */
+ glPixelZoom(1.0, 1.0);
+ glWindowPos2i(100, 0);
+ glDrawPixels(400, 400, GL_LUMINANCE, GL_UNSIGNED_BYTE, stencil2);
+ }
+
+ glutSwapBuffers();
+}
+
+
+static void Reshape(int width, int height)
+{
+ WinWidth = width;
+ WinHeight = height;
+ glViewport(0, 0, width, height);
+}
+
+
+static void Key(unsigned char key, int x, int y)
+{
+ (void) x;
+ (void) y;
+ switch (key) {
+ case 'p':
+ TestPacking = !TestPacking;
+ printf("Test pixel pack/unpack: %d\n", TestPacking);
+ break;
+ case 'l':
+ TestList = !TestList;
+ printf("Test dlist: %d\n", TestList);
+ break;
+ case 27:
+ exit(0);
+ break;
+ }
+ glutPostRedisplay();
+}
+
+
+static void Init(void)
+{
+ const GLfloat blue[4] = {.1, .1, 1.0, 1.0};
+ const GLfloat gray[4] = {0.2, 0.2, 0.2, 1.0};
+ const GLfloat white[4] = {1.0, 1.0, 1.0, 1.0};
+ const GLfloat pos[4] = {0, 0, 10, 0};
+ GLint bits;
+
+ printf("GL_VERSION = %s\n", (char *) glGetString(GL_VERSION));
+ printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
+
+ glGetIntegerv(GL_STENCIL_BITS, &bits);
+ printf("Stencil bits: %d\n", bits);
+
+ assert(bits >= 8);
+
+ glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, blue);
+ glLightfv(GL_LIGHT0, GL_AMBIENT, gray);
+ glLightfv(GL_LIGHT0, GL_DIFFUSE, white);
+ glLightfv(GL_LIGHT0, GL_POSITION, pos);
+ glEnable(GL_LIGHTING);
+ glEnable(GL_LIGHT0);
+}
+
+
+int main(int argc, char *argv[])
+{
+ glutInit(&argc, argv);
+ glutInitWindowPosition(0, 0);
+ glutInitWindowSize(WinWidth, WinHeight);
+ glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_STENCIL | GLUT_DOUBLE);
+ glutCreateWindow(argv[0]);
+ glewInit();
+ glutReshapeFunc(Reshape);
+ glutKeyboardFunc(Key);
+ glutDisplayFunc(Display);
+ Init();
+ glutMainLoop();
+ return 0;
+}
diff --git a/progs/tests/zreaddraw.c b/progs/tests/zreaddraw.c
index 4d27b3a505..0910eaaa79 100644
--- a/progs/tests/zreaddraw.c
+++ b/progs/tests/zreaddraw.c
@@ -11,7 +11,16 @@
#include <GL/glew.h>
#include <GL/glut.h>
-static GLint WinWidth = 500, WinHeight = 500;
+
+#define ZWIDTH 100
+#define ZHEIGHT 100
+
+#define ZOOM 4
+
+#define ZWIDTH2 (ZOOM * ZWIDTH)
+#define ZHEIGHT2 (ZOOM * ZHEIGHT)
+
+static GLint WinWidth = ZWIDTH + ZWIDTH2, WinHeight = ZHEIGHT + ZHEIGHT2;
static GLboolean Invert = GL_FALSE;
static GLboolean TestPacking = GL_FALSE;
static GLboolean TestList = GL_FALSE;
@@ -19,8 +28,8 @@ static GLboolean TestList = GL_FALSE;
static void Display(void)
{
- GLfloat depth[100 * 100 * 2];
- GLfloat depth2[400 * 400]; /* *2 to test pixelstore stuff */
+ GLfloat depth[ZWIDTH * ZHEIGHT * 2];
+ GLfloat depth2[ZWIDTH2 * ZHEIGHT2]; /* *2 to test pixelstore stuff */
GLuint list;
GLenum depthType = GL_FLOAT;
@@ -30,7 +39,7 @@ static void Display(void)
glEnable(GL_DEPTH_TEST);
/* draw a sphere */
- glViewport(0, 0, 100, 100);
+ glViewport(0, 0, ZWIDTH, ZHEIGHT);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(-1, 1, -1, 1, -1, 0); /* clip away back half of sphere */
@@ -44,12 +53,12 @@ static void Display(void)
}
/* read the depth image */
- glReadPixels(0, 0, 100, 100, GL_DEPTH_COMPONENT, depthType, depth);
+ glReadPixels(0, 0, ZWIDTH, ZHEIGHT, GL_DEPTH_COMPONENT, depthType, depth);
if (depthType == GL_FLOAT) {
GLfloat min, max;
int i;
min = max = depth[0];
- for (i = 1; i < 100 * 100; i++) {
+ for (i = 1; i < ZWIDTH * ZHEIGHT; i++) {
if (depth[i] < min)
min = depth[i];
if (depth[i] > max)
@@ -58,9 +67,22 @@ static void Display(void)
printf("Depth value range: [%f, %f]\n", min, max);
}
+ /* debug */
+ if (0) {
+ int i;
+ float *z = depth + ZWIDTH * 50;
+ printf("z at y=50:\n");
+ for (i = 0; i < ZWIDTH; i++) {
+ printf("%5.3f ", z[i]);
+ if ((i + 1) % 12 == 0)
+ printf("\n");
+ }
+ printf("\n");
+ }
+
/* Draw the Z image as luminance above original rendering */
- glWindowPos2i(0, 100);
- glDrawPixels(100, 100, GL_LUMINANCE, depthType, depth);
+ glWindowPos2i(0, ZHEIGHT);
+ glDrawPixels(ZWIDTH, ZHEIGHT, GL_LUMINANCE, depthType, depth);
if (TestPacking) {
glPixelStorei(GL_PACK_ROW_LENGTH, 0);
@@ -70,9 +92,9 @@ static void Display(void)
}
/* draw depth image with scaling (into z buffer) */
- glPixelZoom(4.0, 4.0);
+ glPixelZoom(ZOOM, ZOOM);
glColor4f(1, 0, 0, 0);
- glWindowPos2i(100, 0);
+ glWindowPos2i(ZWIDTH, 0);
if (Invert) {
glPixelTransferf(GL_DEPTH_SCALE, -1.0);
glPixelTransferf(GL_DEPTH_BIAS, 1.0);
@@ -80,13 +102,13 @@ static void Display(void)
if (TestList) {
list = glGenLists(1);
glNewList(list, GL_COMPILE);
- glDrawPixels(100, 100, GL_DEPTH_COMPONENT, depthType, depth);
+ glDrawPixels(ZWIDTH, ZHEIGHT, GL_DEPTH_COMPONENT, depthType, depth);
glEndList();
glCallList(list);
glDeleteLists(list, 1);
}
else {
- glDrawPixels(100, 100, GL_DEPTH_COMPONENT, depthType, depth);
+ glDrawPixels(ZWIDTH, ZHEIGHT, GL_DEPTH_COMPONENT, depthType, depth);
}
if (Invert) {
glPixelTransferf(GL_DEPTH_SCALE, 1.0);
@@ -101,24 +123,25 @@ static void Display(void)
glDisable(GL_DEPTH_TEST);
/* read back scaled depth image */
- glReadPixels(100, 0, 400, 400, GL_DEPTH_COMPONENT, GL_FLOAT, depth2);
+ glReadPixels(ZWIDTH, 0, ZWIDTH2, ZHEIGHT2, GL_DEPTH_COMPONENT, GL_FLOAT, depth2);
/* debug */
if (0) {
int i;
- float *z = depth2 + 400 * 200;
+ float *z = depth2 + ZWIDTH2 * 200;
printf("z at y=200:\n");
- for (i = 0; i < 400; i++) {
+ for (i = 0; i < ZWIDTH2; i++) {
printf("%5.3f ", z[i]);
if ((i + 1) % 12 == 0)
printf("\n");
}
+ printf("\n");
}
/* draw as luminance */
glPixelZoom(1.0, 1.0);
- glWindowPos2i(100, 0);
- glDrawPixels(400, 400, GL_LUMINANCE, GL_FLOAT, depth2);
+ glWindowPos2i(ZWIDTH, 0);
+ glDrawPixels(ZWIDTH2, ZHEIGHT2, GL_LUMINANCE, GL_FLOAT, depth2);
glutSwapBuffers();
}
@@ -162,9 +185,13 @@ static void Init(void)
const GLfloat gray[4] = {0.2, 0.2, 0.2, 1.0};
const GLfloat white[4] = {1.0, 1.0, 1.0, 1.0};
const GLfloat pos[4] = {0, 0, 10, 0};
+ GLint z;
+
+ glGetIntegerv(GL_DEPTH_BITS, &z);
printf("GL_VERSION = %s\n", (char *) glGetString(GL_VERSION));
printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
+ printf("GL_DEPTH_BITS = %d\n", z);
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, blue);
glLightfv(GL_LIGHT0, GL_AMBIENT, gray);
generated by cgit v1.2.3 (git 2.51.0) at 2025-11-04 00:45:24 +0000