diff options
author | Eric Anholt <[email protected]> | 2010-05-21 09:32:38 -0700 |
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committer | Eric Anholt <[email protected]> | 2010-05-21 12:20:39 -0700 |
commit | 68fc4b415e322f6744299e39864fbc377c6eff74 (patch) | |
tree | 4bafffd8b0105174f3c5c0ae327a005be9145990 /progs/trivial/vp-array-hf.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/trivial/vp-array-hf.c')
-rw-r--r-- | progs/trivial/vp-array-hf.c | 215 |
1 files changed, 0 insertions, 215 deletions
diff --git a/progs/trivial/vp-array-hf.c b/progs/trivial/vp-array-hf.c deleted file mode 100644 index f812436437f..00000000000 --- a/progs/trivial/vp-array-hf.c +++ /dev/null @@ -1,215 +0,0 @@ -/* Test glGenProgramsNV(), glIsProgramNV(), glLoadProgramNV() */ - -#include <assert.h> -#include <string.h> -#include <stdio.h> -#include <stdlib.h> -#include <math.h> -#include <GL/glew.h> -#include <GL/glut.h> - -typedef union { GLfloat f; GLint i; } fi_type; -/** - * Convert a 4-byte float to a 2-byte half float. - * Based on code from: - * http://www.opengl.org/discussion_boards/ubb/Forum3/HTML/008786.html - */ -static GLhalf -_mesa_float_to_half(GLfloat val) -{ - - const fi_type fi = {val}; - const int flt_m = fi.i & 0x7fffff; - const int flt_e = (fi.i >> 23) & 0xff; - const int flt_s = (fi.i >> 31) & 0x1; - int s, e, m = 0; - GLhalf result; - - /* sign bit */ - s = flt_s; - - /* handle special cases */ - if ((flt_e == 0) && (flt_m == 0)) { - /* zero */ - /* m = 0; - already set */ - e = 0; - } - else if ((flt_e == 0) && (flt_m != 0)) { - /* denorm -- denorm float maps to 0 half */ - /* m = 0; - already set */ - e = 0; - } - else if ((flt_e == 0xff) && (flt_m == 0)) { - /* infinity */ - /* m = 0; - already set */ - e = 31; - } - else if ((flt_e == 0xff) && (flt_m != 0)) { - /* NaN */ - m = 1; - e = 31; - } - else { - /* regular number */ - const int new_exp = flt_e - 127; - if (new_exp < -24) { - /* this maps to 0 */ - /* m = 0; - already set */ - e = 0; - } - else if (new_exp < -14) { - /* this maps to a denorm */ - unsigned int exp_val = (unsigned int) (-14 - new_exp); /* 2^-exp_val*/ - e = 0; - switch (exp_val) { - case 0: - /* m = 0; - already set */ - break; - case 1: m = 512 + (flt_m >> 14); break; - case 2: m = 256 + (flt_m >> 15); break; - case 3: m = 128 + (flt_m >> 16); break; - case 4: m = 64 + (flt_m >> 17); break; - case 5: m = 32 + (flt_m >> 18); break; - case 6: m = 16 + (flt_m >> 19); break; - case 7: m = 8 + (flt_m >> 20); break; - case 8: m = 4 + (flt_m >> 21); break; - case 9: m = 2 + (flt_m >> 22); break; - case 10: m = 1; break; - } - } - else if (new_exp > 15) { - /* map this value to infinity */ - /* m = 0; - already set */ - e = 31; - } - else { - /* regular */ - e = new_exp + 15; - m = flt_m >> 13; - } - } - - result = (s << 15) | (e << 10) | m; - return result; -} - - -GLfloat verts[][4] = { - { 0.9, -0.9, 0.0, 1.0 }, - { 0.9, 0.9, 0.0, 1.0 }, - { -0.9, 0.9, 0.0, 1.0 }, - { -0.9, -0.9, 0.0, 1.0 }, -}; - -GLhalf hverts[16]; - -GLubyte color[][4] = { - { 0x00, 0x00, 0xff, 0x00 }, - { 0x00, 0xff, 0x00, 0x00 }, - { 0xff, 0x00, 0x00, 0x00 }, - { 0xff, 0xff, 0xff, 0x00 }, -}; - -GLuint indices[] = { 0, 1, 2, 3 }; - -static void Init( void ) -{ - GLint errno; - GLuint prognum; - GLuint i, j; - - static const char *prog1 = - "!!ARBvp1.0\n" - "MOV result.color, vertex.color;\n" - "MOV result.position, vertex.position;\n" - "END\n"; - - if (!glutExtensionSupported("GL_ARB_half_float_vertex")) { - printf("GL_ARB_half_float_vertex not found!\n"); - exit(0); - } - - glGenProgramsARB(1, &prognum); - glBindProgramARB(GL_VERTEX_PROGRAM_ARB, prognum); - glProgramStringARB(GL_VERTEX_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB, - strlen(prog1), (const GLubyte *) prog1); - - assert(glIsProgramARB(prognum)); - errno = glGetError(); - printf("glGetError = %d\n", errno); - if (errno != GL_NO_ERROR) - { - GLint errorpos; - - glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errorpos); - printf("errorpos: %d\n", errorpos); - printf("%s\n", (char *)glGetString(GL_PROGRAM_ERROR_STRING_ARB)); - } - - for (i = 0; i < 4; i++) - for (j = 0; j < 4; j++) - hverts[i * 4 + j] = _mesa_float_to_half(verts[i][j]); - - glEnableClientState( GL_VERTEX_ARRAY ); - glEnableClientState( GL_COLOR_ARRAY ); - glVertexPointer( 4, GL_HALF_FLOAT, 8, hverts ); - glColorPointer( 4, GL_UNSIGNED_BYTE, 0, color ); - -} - - - -static void Display( void ) -{ - glClearColor(0.3, 0.3, 0.3, 1); - glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); - - glEnable(GL_VERTEX_PROGRAM_NV); - glDrawElements( GL_TRIANGLES, 3, GL_UNSIGNED_INT, indices ); - - glFlush(); -} - - -static void Reshape( int width, int height ) -{ - glViewport( 0, 0, width, height ); - glMatrixMode( GL_PROJECTION ); - glLoadIdentity(); - glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0); - 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 27: - exit(0); - break; - } - glutPostRedisplay(); -} - - - - -int main( int argc, char *argv[] ) -{ - glutInit( &argc, argv ); - glutInitWindowPosition( 0, 0 ); - glutInitWindowSize( 250, 250 ); - glutInitDisplayMode( GLUT_RGB | GLUT_SINGLE | GLUT_DEPTH ); - glutCreateWindow(argv[0]); - glewInit(); - glutReshapeFunc( Reshape ); - glutKeyboardFunc( Key ); - glutDisplayFunc( Display ); - Init(); - glutMainLoop(); - return 0; -} |