diff options
author | Eric Anholt <eric@anholt.net> | 2010-05-21 09:32:38 -0700 |
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committer | Eric Anholt <eric@anholt.net> | 2010-05-21 12:20:39 -0700 |
commit | 68fc4b415e322f6744299e39864fbc377c6eff74 (patch) | |
tree | 4bafffd8b0105174f3c5c0ae327a005be9145990 /progs/demos/fplight.c | |
parent | e4f4489e3fc0b36d72821b55794fb843b2b7fa5f (diff) |
Remove demos that have moved to git+ssh://git.freedesktop.org/git/mesa/demos.
The remaining programs are ones I've had difficulty finding a build
environment for to make the build system or are unit tests that should
probably live next to their code instead. Hopefully people can bring
over the build for remaining pieces they care about.
Diffstat (limited to 'progs/demos/fplight.c')
-rw-r--r-- | progs/demos/fplight.c | 285 |
1 files changed, 0 insertions, 285 deletions
diff --git a/progs/demos/fplight.c b/progs/demos/fplight.c deleted file mode 100644 index f52a4f7868..0000000000 --- a/progs/demos/fplight.c +++ /dev/null @@ -1,285 +0,0 @@ -/* - * Use GL_NV_fragment_program to implement per-pixel lighting. - * - * Brian Paul - * 7 April 2003 - */ - -#include <assert.h> -#include <string.h> -#include <stdio.h> -#include <stdlib.h> -#include <math.h> -#include <GL/glew.h> -#include <GL/glut.h> - - -static GLfloat Diffuse[4] = { 0.5, 0.5, 1.0, 1.0 }; -static GLfloat Specular[4] = { 0.8, 0.8, 0.8, 1.0 }; -static GLfloat LightPos[4] = { 0.0, 10.0, 20.0, 1.0 }; -static GLfloat Delta = 1.0; - -static GLuint FragProg; -static GLuint VertProg; -static GLboolean Anim = GL_TRUE; -static GLboolean Wire = GL_FALSE; -static GLboolean PixelLight = GL_TRUE; -static GLint Win; -static GLfloat Xrot = 0, Yrot = 0; - - -#define NAMED_PARAMETER4FV(prog, name, v) \ - glProgramNamedParameter4fvNV(prog, strlen(name), (const GLubyte *) name, v) - - -static void Display( void ) -{ - glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); - - if (PixelLight) { -#if defined(GL_NV_fragment_program) - NAMED_PARAMETER4FV(FragProg, "LightPos", LightPos); - glEnable(GL_FRAGMENT_PROGRAM_NV); - glEnable(GL_VERTEX_PROGRAM_NV); -#endif - glDisable(GL_LIGHTING); - } - else { - glLightfv(GL_LIGHT0, GL_POSITION, LightPos); -#if defined(GL_NV_fragment_program) - glDisable(GL_FRAGMENT_PROGRAM_NV); - glDisable(GL_VERTEX_PROGRAM_NV); -#endif - glEnable(GL_LIGHTING); - } - - glPushMatrix(); - glRotatef(Xrot, 1, 0, 0); - glRotatef(Yrot, 0, 1, 0); - -#if 1 - glutSolidSphere(2.0, 10, 5); -#else - { - GLUquadricObj *q = gluNewQuadric(); - gluQuadricNormals(q, GL_SMOOTH); - gluQuadricTexture(q, GL_TRUE); - glRotatef(90, 1, 0, 0); - glTranslatef(0, 0, -1); - gluCylinder(q, 1.0, 1.0, 2.0, 24, 1); - gluDeleteQuadric(q); - } -#endif - - glPopMatrix(); - - glutSwapBuffers(); -} - - -static void Idle(void) -{ - LightPos[0] += Delta; - if (LightPos[0] > 25.0) - Delta = -1.0; - else if (LightPos[0] <- 25.0) - Delta = 1.0; - glutPostRedisplay(); -} - - -static void Reshape( int width, int height ) -{ - glViewport( 0, 0, width, height ); - glMatrixMode( GL_PROJECTION ); - glLoadIdentity(); - glFrustum( -1.0, 1.0, -1.0, 1.0, 5.0, 25.0 ); - /*glOrtho( -2.0, 2.0, -2.0, 2.0, 5.0, 25.0 );*/ - glMatrixMode( GL_MODELVIEW ); - glLoadIdentity(); - glTranslatef( 0.0, 0.0, -15.0 ); -} - - -static void Key( unsigned char key, int x, int y ) -{ - (void) x; - (void) y; - switch (key) { - case ' ': - Anim = !Anim; - if (Anim) - glutIdleFunc(Idle); - else - glutIdleFunc(NULL); - break; - case 'x': - LightPos[0] -= 1.0; - break; - case 'X': - LightPos[0] += 1.0; - break; - case 'w': - Wire = !Wire; - if (Wire) - glPolygonMode(GL_FRONT_AND_BACK, GL_LINE); - else - glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); - break; - case 'p': - PixelLight = !PixelLight; - if (PixelLight) { - printf("Per-pixel lighting\n"); - } - else { - printf("Conventional lighting\n"); - } - break; - case 27: - glutDestroyWindow(Win); - exit(0); - } - glutPostRedisplay(); -} - -static void SpecialKey( int key, int x, int y ) -{ - const GLfloat step = 3.0; - (void) x; - (void) y; - switch (key) { - case GLUT_KEY_UP: - Xrot -= step; - break; - case GLUT_KEY_DOWN: - Xrot += step; - break; - case GLUT_KEY_LEFT: - Yrot -= step; - break; - case GLUT_KEY_RIGHT: - Yrot += step; - break; - } - glutPostRedisplay(); -} - - -static void Init( void ) -{ - static const char *fragProgramText = - "!!FP1.0\n" - "DECLARE Diffuse; \n" - "DECLARE Specular; \n" - "DECLARE LightPos; \n" - - "# Compute normalized LightPos, put it in R0\n" - "DP3 R0.x, LightPos, LightPos;\n" - "RSQ R0.y, R0.x;\n" - "MUL R0, LightPos, R0.y;\n" - - "# Compute normalized normal, put it in R1\n" - "DP3 R1, f[TEX0], f[TEX0]; \n" - "RSQ R1.y, R1.x;\n" - "MUL R1, f[TEX0], R1.y;\n" - - "# Compute dot product of light direction and normal vector\n" - "DP3_SAT R2, R0, R1;" - - "MUL R3, Diffuse, R2; # diffuse attenuation\n" - - "POW R4, R2.x, {20.0}.x; # specular exponent\n" - - "MUL R5, Specular, R4; # specular attenuation\n" - - "ADD o[COLR], R3, R5; # add diffuse and specular colors\n" - "END \n" - ; - - static const char *vertProgramText = - "!!VP1.0\n" - "# typical modelview/projection transform\n" - "DP4 o[HPOS].x, c[0], v[OPOS] ;\n" - "DP4 o[HPOS].y, c[1], v[OPOS] ;\n" - "DP4 o[HPOS].z, c[2], v[OPOS] ;\n" - "DP4 o[HPOS].w, c[3], v[OPOS] ;\n" - "# transform normal by inv transpose of modelview, put in tex0\n" - "DP3 o[TEX0].x, c[4], v[NRML] ;\n" - "DP3 o[TEX0].y, c[5], v[NRML] ;\n" - "DP3 o[TEX0].z, c[6], v[NRML] ;\n" - "DP3 o[TEX0].w, c[7], v[NRML] ;\n" - "END\n"; - ; - - if (!glutExtensionSupported("GL_NV_vertex_program")) { - printf("Sorry, this demo requires GL_NV_vertex_program\n"); - exit(1); - } - if (!glutExtensionSupported("GL_NV_fragment_program")) { - printf("Sorry, this demo requires GL_NV_fragment_program\n"); - exit(1); - } - -#if defined(GL_NV_fragment_program) - glGenProgramsNV(1, &FragProg); - assert(FragProg > 0); - glGenProgramsNV(1, &VertProg); - assert(VertProg > 0); - - /* - * Fragment program - */ - glLoadProgramNV(GL_FRAGMENT_PROGRAM_NV, FragProg, - strlen(fragProgramText), - (const GLubyte *) fragProgramText); - assert(glIsProgramNV(FragProg)); - glBindProgramNV(GL_FRAGMENT_PROGRAM_NV, FragProg); - - NAMED_PARAMETER4FV(FragProg, "Diffuse", Diffuse); - NAMED_PARAMETER4FV(FragProg, "Specular", Specular); - - /* - * Vertex program - */ - glLoadProgramNV(GL_VERTEX_PROGRAM_NV, VertProg, - strlen(vertProgramText), - (const GLubyte *) vertProgramText); - assert(glIsProgramNV(VertProg)); - glBindProgramNV(GL_VERTEX_PROGRAM_NV, VertProg); - glTrackMatrixNV(GL_VERTEX_PROGRAM_NV, 0, GL_MODELVIEW_PROJECTION_NV, GL_IDENTITY_NV); - glTrackMatrixNV(GL_VERTEX_PROGRAM_NV, 4, GL_MODELVIEW, GL_INVERSE_TRANSPOSE_NV); -#endif - - /* - * Misc init - */ - glClearColor(0.3, 0.3, 0.3, 0.0); - glEnable(GL_DEPTH_TEST); - glEnable(GL_LIGHT0); - glEnable(GL_LIGHTING); - glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, Diffuse); - glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, Specular); - glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, 20.0); - - printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER)); - printf("Press p to toggle between per-pixel and per-vertex lighting\n"); -} - - -int main( int argc, char *argv[] ) -{ - glutInitWindowSize( 200, 200 ); - glutInit( &argc, argv ); - glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH ); - Win = glutCreateWindow(argv[0]); - glewInit(); - glutReshapeFunc( Reshape ); - glutKeyboardFunc( Key ); - glutSpecialFunc( SpecialKey ); - glutDisplayFunc( Display ); - if (Anim) - glutIdleFunc(Idle); - Init(); - glutMainLoop(); - return 0; -} |