demos: move tests/fbotexture.c to demos/

1 files changed, 0 insertions, 621 deletions

diff --git a/progs/tests/fbotexture.c b/progs/tests/fbotexture.c
deleted file mode 100644
index 50a4b00afce..00000000000
--- a/progs/tests/fbotexture.c
+++ /dev/null
@@ -1,621 +0,0 @@
-/*
- * Test GL_EXT_framebuffer_object render-to-texture
- *
- * Draw a teapot into a texture image with stenciling.
- * Then draw a textured quad using that texture.
- *
- * Brian Paul
- * 18 Apr 2005
- */
-
-
-#include <GL/glew.h>
-#include <GL/glut.h>
-#include <assert.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <math.h>
-
-/* For debug */
-#define DEPTH 1
-#define STENCIL 1
-#define DRAW 1
-
-
-static int Win = 0;
-static int Width = 400, Height = 400;
-
-#if 1
-static GLenum TexTarget = GL_TEXTURE_2D;
-static int TexWidth = 512, TexHeight = 512;
-static GLenum TexIntFormat = GL_RGB; /* either GL_RGB or GL_RGBA */
-#else
-static GLenum TexTarget = GL_TEXTURE_RECTANGLE_ARB;
-static int TexWidth = 200, TexHeight = 200;
-static GLenum TexIntFormat = GL_RGB5; /* either GL_RGB or GL_RGBA */
-#endif
-static GLuint TextureLevel = 0;  /* which texture level to render to */
-
-static GLuint MyFB;
-static GLuint TexObj;
-static GLuint DepthRB = 0, StencilRB = 0;
-static GLboolean Anim = GL_FALSE;
-static GLfloat Rot = 0.0;
-static GLboolean UsePackedDepthStencil = GL_FALSE;
-static GLboolean UsePackedDepthStencilBoth = GL_FALSE;
-static GLboolean Use_ARB_fbo = GL_FALSE;
-static GLboolean Cull = GL_FALSE;
-static GLboolean Wireframe = GL_FALSE;
-
-
-static void
-CheckError(int line)
-{
-   GLenum err = glGetError();
-   if (err) {
-      printf("GL Error 0x%x at line %d\n", (int) err, line);
-   }
-}
-
-
-static void
-Idle(void)
-{
-   Rot = glutGet(GLUT_ELAPSED_TIME) * 0.1;
-   glutPostRedisplay();
-}
-
-
-static void
-RenderTexture(void)
-{
-   GLenum status;
-
-   glMatrixMode(GL_PROJECTION);
-   glLoadIdentity();
-   glOrtho(-1.0, 1.0, -1.0, 1.0, 5.0, 25.0);
-   glMatrixMode(GL_MODELVIEW);
-   glLoadIdentity();
-   glTranslatef(0.0, 0.0, -15.0);
-
-   /* draw to texture image */
-   glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, MyFB);
-
-   status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
-   if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
-      printf("Framebuffer incomplete!!!\n");
-   }
-
-   glViewport(0, 0, TexWidth, TexHeight);
-
-   glClearColor(0.5, 0.5, 1.0, 0.0);
-   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
-   CheckError(__LINE__);
-
-#if DEPTH
-   glEnable(GL_DEPTH_TEST);
-#endif
-
-#if STENCIL
-   glEnable(GL_STENCIL_TEST);
-   glStencilFunc(GL_NEVER, 1, ~0);
-   glStencilOp(GL_REPLACE, GL_KEEP, GL_REPLACE);
-#endif
-
-   CheckError(__LINE__);
-
-#if DEPTH || STENCIL
-   /* draw diamond-shaped stencil pattern */
-   glColor3f(0, 1, 0);
-   glBegin(GL_POLYGON);
-   glVertex2f(-0.2,  0.0);
-   glVertex2f( 0.0, -0.2);
-   glVertex2f( 0.2,  0.0);
-   glVertex2f( 0.0,  0.2);
-   glEnd();
-#endif
-
-   /* draw teapot where stencil != 1 */
-#if STENCIL
-   glStencilFunc(GL_NOTEQUAL, 1, ~0);
-   glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
-#endif
-
-   CheckError(__LINE__);
-
-   if (Wireframe) {
-      glPolygonMode(GL_FRONT, GL_LINE);
-   }
-   else {
-      glPolygonMode(GL_FRONT, GL_FILL);
-   }
-
-   if (Cull) {
-      /* cull back */
-      glCullFace(GL_BACK);
-      glEnable(GL_CULL_FACE);
-   }
-   else {
-      glDisable(GL_CULL_FACE);
-   }
-
-#if 0
-   glBegin(GL_POLYGON);
-   glColor3f(1, 0, 0);
-   glVertex2f(-1, -1);
-   glColor3f(0, 1, 0);
-   glVertex2f(1, -1);
-   glColor3f(0, 0, 1);
-   glVertex2f(0, 1);
-   glEnd();
-#else
-   glEnable(GL_LIGHTING);
-   glEnable(GL_LIGHT0);
-   glPushMatrix();
-   glRotatef(0.5 * Rot, 1.0, 0.0, 0.0);
-   glFrontFace(GL_CW); /* Teapot patches backward */
-   glutSolidTeapot(0.5);
-   glFrontFace(GL_CCW);
-   glPopMatrix();
-   glDisable(GL_LIGHTING);
-   /*
-   PrintStencilHistogram(TexWidth, TexHeight);
-   */
-#endif
-
-   glDisable(GL_DEPTH_TEST);
-   glDisable(GL_STENCIL_TEST);
-   glDisable(GL_CULL_FACE);
-   glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
-
-#if DRAW
-   /* Bind normal framebuffer */
-   glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
-#endif
-
-   CheckError(__LINE__);
-}
-
-
-
-static void
-Display(void)
-{
-   float ar = (float) Width / (float) Height;
-
-   RenderTexture();
-
-   /* draw textured quad in the window */
-#if DRAW
-   glMatrixMode(GL_PROJECTION);
-   glLoadIdentity();
-   glFrustum(-ar, ar, -1.0, 1.0, 5.0, 25.0);
-   glMatrixMode(GL_MODELVIEW);
-   glLoadIdentity();
-   glTranslatef(0.0, 0.0, -7.0);
-
-   glViewport(0, 0, Width, Height);
-
-   glClearColor(0.25, 0.25, 0.25, 0);
-   glClear(GL_COLOR_BUFFER_BIT);
-
-   glPushMatrix();
-   glRotatef(Rot, 0, 1, 0);
-   glEnable(TexTarget);
-   glBindTexture(TexTarget, TexObj);
-   glBegin(GL_POLYGON);
-   glColor3f(0.25, 0.25, 0.25);
-   if (TexTarget == GL_TEXTURE_2D) {
-      glTexCoord2f(0, 0);
-      glVertex2f(-1, -1);
-      glTexCoord2f(1, 0);
-      glVertex2f(1, -1);
-      glColor3f(1.0, 1.0, 1.0);
-      glTexCoord2f(1, 1);
-      glVertex2f(1, 1);
-      glTexCoord2f(0, 1);
-      glVertex2f(-1, 1);
-   }
-   else {
-      assert(TexTarget == GL_TEXTURE_RECTANGLE_ARB);
-      glTexCoord2f(0, 0);
-      glVertex2f(-1, -1);
-      glTexCoord2f(TexWidth, 0);
-      glVertex2f(1, -1);
-      glColor3f(1.0, 1.0, 1.0);
-      glTexCoord2f(TexWidth, TexHeight);
-      glVertex2f(1, 1);
-      glTexCoord2f(0, TexHeight);
-      glVertex2f(-1, 1);
-   }
-   glEnd();
-   glPopMatrix();
-   glDisable(TexTarget);
-#endif
-
-   glutSwapBuffers();
-   CheckError(__LINE__);
-}
-
-
-static void
-Reshape(int width, int height)
-{
-   glViewport(0, 0, width, height);
-   Width = width;
-   Height = height;
-}
-
-
-static void
-CleanUp(void)
-{
-#if DEPTH
-   glDeleteRenderbuffersEXT(1, &DepthRB);
-#endif
-#if STENCIL
-   glDeleteRenderbuffersEXT(1, &StencilRB);
-#endif
-   glDeleteFramebuffersEXT(1, &MyFB);
-
-   glDeleteTextures(1, &TexObj);
-
-   glutDestroyWindow(Win);
-
-   exit(0);
-}
-
-
-static void
-Key(unsigned char key, int x, int y)
-{
-   (void) x;
-   (void) y;
-   switch (key) {
-   case 'a':
-      Anim = !Anim;
-      if (Anim)
-         glutIdleFunc(Idle);
-      else
-         glutIdleFunc(NULL);
-      break;
-   case 'c':
-      Cull = !Cull;
-      break;
-   case 'w':
-      Wireframe = !Wireframe;
-      break;
-   case 's':
-      Rot += 2.0;
-      break;
-   case 'S':
-      Rot -= 2.0;
-      break;
-   case 27:
-      CleanUp();
-      break;
-   }
-   glutPostRedisplay();
-}
-
-
-/**
- * Attach depth and stencil renderbuffer(s) to the given framebuffer object.
- * \param tryDepthStencil  if true, try to use a combined depth+stencil buffer
- * \param bindDepthStencil  if true, and tryDepthStencil is true, bind with
- *                          the GL_DEPTH_STENCIL_ATTACHMENT target.
- * \return GL_TRUE for success, GL_FALSE for failure
- */
-static GLboolean
-AttachDepthAndStencilBuffers(GLuint fbo,
-                             GLsizei width, GLsizei height,
-                             GLboolean tryDepthStencil,
-                             GLboolean bindDepthStencil,
-                             GLuint *depthRbOut, GLuint *stencilRbOut)
-{
-   GLenum status;
-
-   *depthRbOut = *stencilRbOut = 0;
-
-   glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo);
-
-   if (tryDepthStencil) {
-      GLuint rb;
-
-      glGenRenderbuffersEXT(1, &rb);
-      glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, rb);
-      glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT,
-                               GL_DEPTH24_STENCIL8_EXT,
-                               width, height);
-      if (glGetError())
-         return GL_FALSE;
-
-      if (bindDepthStencil) {
-         /* attach to both depth and stencil at once */
-         glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT,
-                                      GL_DEPTH_STENCIL_ATTACHMENT,
-                                      GL_RENDERBUFFER_EXT, rb);
-         if (glGetError())
-            return GL_FALSE;
-      }
-      else {
-         /* attach to depth attachment point */
-         glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT,
-                                      GL_DEPTH_ATTACHMENT_EXT,
-                                      GL_RENDERBUFFER_EXT, rb);
-         if (glGetError())
-            return GL_FALSE;
-
-         /* and attach to stencil attachment point */
-         glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT,
-                                      GL_STENCIL_ATTACHMENT_EXT,
-                                      GL_RENDERBUFFER_EXT, rb);
-         if (glGetError())
-            return GL_FALSE;
-      }
-
-      status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
-      if (status != GL_FRAMEBUFFER_COMPLETE_EXT)
-         return GL_FALSE;
-
-      *depthRbOut = *stencilRbOut = rb;
-      return GL_TRUE;
-   }
-
-   /* just depth renderbuffer */
-   {
-      GLuint rb;
-
-      glGenRenderbuffersEXT(1, &rb);
-      glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, rb);
-      glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT,
-                               GL_DEPTH_COMPONENT,
-                               width, height);
-      if (glGetError())
-         return GL_FALSE;
-
-      /* attach to depth attachment point */
-      glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT,
-                                   GL_DEPTH_ATTACHMENT_EXT,
-                                   GL_RENDERBUFFER_EXT, rb);
-      if (glGetError())
-         return GL_FALSE;
-
-      status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
-      if (status != GL_FRAMEBUFFER_COMPLETE_EXT)
-         return GL_FALSE;
-
-      *depthRbOut = rb;
-   }
-
-   /* just stencil renderbuffer */
-   {
-      GLuint rb;
-
-      glGenRenderbuffersEXT(1, &rb);
-      glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, rb);
-      glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT,
-                               GL_STENCIL_INDEX,
-                               width, height);
-      if (glGetError())
-         return GL_FALSE;
-
-      /* attach to depth attachment point */
-      glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT,
-                                   GL_STENCIL_ATTACHMENT_EXT,
-                                   GL_RENDERBUFFER_EXT, rb);
-      if (glGetError())
-         return GL_FALSE;
-
-      status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
-      if (status != GL_FRAMEBUFFER_COMPLETE_EXT) {
-         glDeleteRenderbuffersEXT(1, depthRbOut);
-         *depthRbOut = 0;
-         glDeleteRenderbuffersEXT(1, &rb);
-         return GL_FALSE;
-      }
-
-      *stencilRbOut = rb;
-   }
-
-   return GL_TRUE;
-}
-
-
-static void
-ParseArgs(int argc, char *argv[])
-{
-   GLint i;
-   for (i = 1; i < argc; i++) {
-      if (strcmp(argv[i], "-ds") == 0) {
-         if (!glutExtensionSupported("GL_EXT_packed_depth_stencil")) {
-            printf("GL_EXT_packed_depth_stencil not found!\n");
-            exit(0);
-         }
-         UsePackedDepthStencil = GL_TRUE;
-         printf("Using GL_EXT_packed_depth_stencil\n");
-      }
-      else if (strcmp(argv[i], "-ds2") == 0) {
-         if (!glutExtensionSupported("GL_EXT_packed_depth_stencil")) {
-            printf("GL_EXT_packed_depth_stencil not found!\n");
-            exit(0);
-         }
-         if (!glutExtensionSupported("GL_ARB_framebuffer_object")) {
-            printf("GL_ARB_framebuffer_object not found!\n");
-            exit(0);
-         }
-         UsePackedDepthStencilBoth = GL_TRUE;
-         printf("Using GL_EXT_packed_depth_stencil and GL_DEPTH_STENCIL attachment point\n");
-      }
-      else if (strcmp(argv[i], "-arb") == 0) {
-         if (!glutExtensionSupported("GL_ARB_framebuffer_object")) {
-            printf("Sorry, GL_ARB_framebuffer object not supported!\n");
-         }
-         else {
-            Use_ARB_fbo = GL_TRUE;
-         }
-      }
-      else {
-         printf("Unknown option: %s\n", argv[i]);
-      }
-   }
-}
-
-
-/*
- * Make FBO to render into given texture.
- */
-static GLuint
-MakeFBO_RenderTexture(GLuint TexObj)
-{
-   GLuint fb;
-   GLint sizeFudge = 0;
-
-   glGenFramebuffersEXT(1, &fb);
-   glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb);
-   /* Render color to texture */
-   glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
-                             TexTarget, TexObj, TextureLevel);
-
-   if (Use_ARB_fbo) {
-      /* use a smaller depth buffer to see what happens */
-      sizeFudge = 90;
-   }
-
-   /* Setup depth and stencil buffers */
-   {
-      GLboolean b;
-      b = AttachDepthAndStencilBuffers(fb,
-                                       TexWidth - sizeFudge,
-                                       TexHeight - sizeFudge,
-                                       UsePackedDepthStencil,
-                                       UsePackedDepthStencilBoth,
-                                       &DepthRB, &StencilRB);
-      if (!b) {
-         /* try !UsePackedDepthStencil */
-         b = AttachDepthAndStencilBuffers(fb,
-                                          TexWidth - sizeFudge,
-                                          TexHeight - sizeFudge,
-                                          !UsePackedDepthStencil,
-                                          UsePackedDepthStencilBoth,
-                                          &DepthRB, &StencilRB);
-      }
-      if (!b) {
-         printf("Unable to create/attach depth and stencil renderbuffers "
-                " to FBO!\n");
-         exit(1);
-      }
-   }
-
-   /* queries */
-   {
-      GLint bits, w, h;
-
-      glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, DepthRB);
-      glGetRenderbufferParameterivEXT(GL_RENDERBUFFER_EXT,
-                                      GL_RENDERBUFFER_WIDTH_EXT, &w);
-      glGetRenderbufferParameterivEXT(GL_RENDERBUFFER_EXT,
-                                      GL_RENDERBUFFER_HEIGHT_EXT, &h);
-      printf("Color/Texture size: %d x %d\n", TexWidth, TexHeight);
-      printf("Depth buffer size: %d x %d\n", w, h);
-
-      glGetRenderbufferParameterivEXT(GL_RENDERBUFFER_EXT,
-                                      GL_RENDERBUFFER_DEPTH_SIZE_EXT, &bits);
-      printf("Depth renderbuffer size = %d bits\n", bits);
-
-      glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, StencilRB);
-      glGetRenderbufferParameterivEXT(GL_RENDERBUFFER_EXT,
-                                      GL_RENDERBUFFER_STENCIL_SIZE_EXT, &bits);
-      printf("Stencil renderbuffer size = %d bits\n", bits);
-   }
-
-   /* bind the regular framebuffer */
-   glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
-
-   return fb;
-}
-
-
-static void
-Init(void)
-{
-   if (!glutExtensionSupported("GL_EXT_framebuffer_object")) {
-      printf("GL_EXT_framebuffer_object not found!\n");
-      exit(0);
-   }
-
-   printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
-
-   /* lighting */
-   {
-      static const GLfloat mat[4] = { 1.0, 0.5, 0.5, 1.0 };
-      glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, mat);
-   }
-
-   /*
-    * Make texture object/image (we'll render into this texture)
-    */
-   {
-      glGenTextures(1, &TexObj);
-      glBindTexture(TexTarget, TexObj);
-
-      /* make two image levels */
-      glTexImage2D(TexTarget, 0, TexIntFormat, TexWidth, TexHeight, 0,
-                   GL_RGBA, GL_UNSIGNED_BYTE, NULL);
-      if (TexTarget == GL_TEXTURE_2D) {
-         glTexImage2D(TexTarget, 1, TexIntFormat, TexWidth/2, TexHeight/2, 0,
-                      GL_RGBA, GL_UNSIGNED_BYTE, NULL);
-         TexWidth = TexWidth >> TextureLevel;
-         TexHeight = TexHeight >> TextureLevel;
-         glTexParameteri(TexTarget, GL_TEXTURE_MAX_LEVEL, TextureLevel);
-      }
-
-      glTexParameteri(TexTarget, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-      glTexParameteri(TexTarget, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-      glTexParameteri(TexTarget, GL_TEXTURE_BASE_LEVEL, TextureLevel);
-      glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
-   }
-
-   MyFB = MakeFBO_RenderTexture(TexObj);
-}
-
-
-static void
-Usage(void)
-{
-   printf("Usage:\n");
-   printf("  -ds  Use combined depth/stencil renderbuffer\n");
-   printf("  -arb Try GL_ARB_framebuffer_object's mismatched buffer sizes\n");
-   printf("  -ds2 Try GL_ARB_framebuffer_object's GL_DEPTH_STENCIL_ATTACHMENT\n");
-   printf("Keys:\n");
-   printf("  a    Toggle animation\n");
-   printf("  s/s  Step/rotate\n");
-   printf("  c    Toggle back-face culling\n");
-   printf("  w    Toggle wireframe mode (front-face only)\n");
-   printf("  Esc  Exit\n");
-}
-
-
-int
-main(int argc, char *argv[])
-{
-   glutInit(&argc, argv);
-   glutInitWindowPosition(0, 0);
-   glutInitWindowSize(Width, Height);
-   glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
-   Win = glutCreateWindow(argv[0]);
-   glewInit();
-   glutReshapeFunc(Reshape);
-   glutKeyboardFunc(Key);
-   glutDisplayFunc(Display);
-   if (Anim)
-      glutIdleFunc(Idle);
-
-   ParseArgs(argc, argv);
-   Init();
-   Usage();
-
-   glutMainLoop();
-   return 0;
-}