diff options
Diffstat (limited to 'progs/slang/vstest.c')
| -rw-r--r-- | progs/slang/vstest.c | 340 |
1 files changed, 340 insertions, 0 deletions
diff --git a/progs/slang/vstest.c b/progs/slang/vstest.c new file mode 100644 index 0000000000..95d2ed6b83 --- /dev/null +++ b/progs/slang/vstest.c @@ -0,0 +1,340 @@ +/* + * GL_ARB_vertex_shader test application. Feeds a vertex shader with attributes that + * that have magic values and check if the values received by the shader are the same. + * + * Requires specific support on the GL implementation side. A special function printMESA() + * must be supported in the language that prints variable's current value of generic type + * to the appropriate shader's info log, and optionally to the screen. + * + * Perfectly valid behaviour produces output that does not have a line + * beginning with three stars (***). + * + * Author: Michal Krol + */ + +#include "framework.h" + +#define EPSILON 0.0001f + +static GLhandleARB vert = 0; +static GLhandleARB prog = 0; + +enum SUBMIT_MODE +{ + SM_IM, + SM_VA, + SM_IM_DL, + SM_VA_DL, + SM_MAX +}; + +static enum SUBMIT_MODE submit_method = SM_IM; + +#define C 0 +#define S 1 +#define N 2 +#define V 3 +#define T 4 +#define F 5 +#define A 6 + +struct ATTRIB_DATA +{ + const char *name; + GLuint dispatch; + GLint index; + GLint bind; + GLuint size; + GLfloat data[4]; +}; + +static struct ATTRIB_DATA attribs[] = { + { "gl_Color", C, -1, -1, 4, { 4.2f, 0.56f, -2.1f, 0.29f } }, + { "gl_SecondaryColor", S, -1, -1, 4, { 0.38f, 2.0f, 0.99f, 1.0f } }, + { "gl_Normal", N, -1, -1, 3, { 54.0f, 77.0f, 1.15f, 0.0f } }, + { "gl_MultiTexCoord0", T, 0, -1, 4, { 11.1f, 11.2f, 11.3f, 11.4f } }, + { "gl_MultiTexCoord1", T, 1, -1, 4, { 22.1f, 22.2f, 22.3f, 22.4f } }, + { "gl_MultiTexCoord2", T, 2, -1, 4, { 33.1f, 33.2f, 33.3f, 33.4f } }, + { "gl_MultiTexCoord3", T, 3, -1, 4, { 44.1f, 44.2f, 44.3f, 44.4f } }, + { "gl_MultiTexCoord4", T, 4, -1, 4, { 55.1f, 55.2f, 55.3f, 55.4f } }, + { "gl_MultiTexCoord5", T, 5, -1, 4, { 66.1f, 66.2f, 66.3f, 66.4f } }, + { "gl_MultiTexCoord6", T, 6, -1, 4, { 77.1f, 77.2f, 77.3f, 77.4f } }, + { "gl_MultiTexCoord7", T, 7, -1, 4, { 88.1f, 88.2f, 88.3f, 88.4f } }, + { "gl_FogCoord", F, -1, -1, 1, { 0.63f, 0.0f, 0.0f, 0.0f } }, + { "Attribute1", A, 1, 1, 4, { 1.11f, 1.22f, 1.33f, 1.44f } }, + { "Attribute2", A, 2, 2, 4, { 2.11f, 2.22f, 2.33f, 2.44f } }, + { "Attribute3", A, 3, 3, 4, { 3.11f, 3.22f, 3.33f, 3.44f } }, + { "Attribute4", A, 4, 4, 1, { 4.11f, 0.0f, 0.0f, 0.0f } }, + { "Attribute5", A, 5, 5, 2, { 5.11f, 5.22f, 0.0f, 0.0f } }, + { "Attribute6", A, 6, 6, 3, { 6.11f, 6.22f, 6.33f, 0.0f } }, + { "Attribute7", A, 7, 7, 2, { 7.11f, 7.22f, 0.0f, 0.0f } }, + { "Attribute7", A, 8, -1, 2, { 8.11f, 8.22f, 0.0f, 0.0f } }, + { "Attribute9", A, 9, 9, 3, { 9.11f, 9.22f, 9.33f, 0.0f } }, + { "Attribute9", A, 10, -1, 3, { 10.11f, 10.22f, 10.33f, 0.0f } }, + { "Attribute9", A, 11, -1, 3, { 11.11f, 11.22f, 11.33f, 0.0f } }, + { "Attribute12", A, 12, 12, 4, { 12.11f, 12.22f, 12.33f, 12.44f } }, + { "Attribute12", A, 13, -1, 4, { 13.11f, 13.22f, 13.33f, 13.44f } }, + { "Attribute12", A, 14, -1, 4, { 14.11f, 14.22f, 14.33f, 14.44f } }, + { "Attribute12", A, 15, -1, 4, { 15.11f, 15.22f, 15.33f, 15.44f } }, + { "gl_Vertex", V, 16, -1, 4, { 0.25f, -0.14f, 0.01f, 1.0f } } +}; + +static void im_render () +{ + GLint i; + + glBegin (GL_POINTS); + for (i = 0; i < sizeof (attribs) / sizeof (*attribs); i++) { + struct ATTRIB_DATA *att = &attribs[i]; + switch (att->dispatch) + { + case C: + glColor4fv (att->data); + break; + case S: + glSecondaryColor3fvEXT (att->data); + break; + case N: + glNormal3fv (att->data); + break; + case V: + glVertex4fv (att->data); + break; + case T: + assert (att->index >= 0 && att->index < 8); + glMultiTexCoord4fvARB (GL_TEXTURE0_ARB + att->index, att->data); + break; + case F: + glFogCoordfvEXT (att->data); + break; + case A: + assert (att->index > 0 && att->index < 16); + glVertexAttrib4fvARB (att->index, att->data); + break; + default: + assert (0); + } + } + glEnd (); +} + +static void va_render () +{ + GLint i; + + for (i = 0; i < sizeof (attribs) / sizeof (*attribs); i++) { + struct ATTRIB_DATA *att = &attribs[i]; + switch (att->dispatch) + { + case C: + glColorPointer (4, GL_FLOAT, 0, att->data); + glEnable (GL_COLOR_ARRAY); + break; + case S: + glSecondaryColorPointerEXT (4, GL_FLOAT, 0, att->data); + glEnable (GL_SECONDARY_COLOR_ARRAY_EXT); + break; + case N: + glNormalPointer (GL_FLOAT, 0, att->data); + glEnable (GL_NORMAL_ARRAY); + break; + case V: + glVertexPointer (4, GL_FLOAT, 0, att->data); + glEnable (GL_VERTEX_ARRAY); + break; + case T: + assert (att->index >= 0 && att->index < 8); + glClientActiveTextureARB (GL_TEXTURE0_ARB + att->index); + glTexCoordPointer (4, GL_FLOAT, 0, att->data); + glEnable (GL_TEXTURE_COORD_ARRAY); + break; + case F: + glFogCoordPointerEXT (GL_FLOAT, 0, att->data); + glEnable (GL_FOG_COORDINATE_ARRAY_EXT); + break; + case A: + assert (att->index > 0 && att->index < 16); + glVertexAttribPointerARB (att->index, 4, GL_FLOAT, GL_FALSE, 0, att->data); + glEnableVertexAttribArrayARB (att->index); + break; + default: + assert (0); + } + } + + glDrawArrays (GL_POINTS, 0, 1); + + for (i = 0; i < sizeof (attribs) / sizeof (*attribs); i++) { + struct ATTRIB_DATA *att = &attribs[i]; + switch (att->dispatch) + { + case C: + glDisable (GL_COLOR_ARRAY); + break; + case S: + glDisable (GL_SECONDARY_COLOR_ARRAY_EXT); + break; + case N: + glDisable (GL_NORMAL_ARRAY); + break; + case V: + glDisable (GL_VERTEX_ARRAY); + break; + case T: + glClientActiveTextureARB (GL_TEXTURE0_ARB + att->index); + glDisable (GL_TEXTURE_COORD_ARRAY); + break; + case F: + glDisable (GL_FOG_COORDINATE_ARRAY_EXT); + break; + case A: + glDisableVertexAttribArrayARB (att->index); + break; + default: + assert (0); + } + } +} + +static void dl_start () +{ + glNewList (GL_COMPILE, 1); +} + +static void dl_end () +{ + glEndList (); + glCallList (1); +} + +static void load_test_file (const char *filename) +{ + FILE *f; + long size; + char *code; + GLint i; + + f = fopen (filename, "r"); + if (f == NULL) + return; + + fseek (f, 0, SEEK_END); + size = ftell (f); + fseek (f, 0, SEEK_SET); + + code = (char *) (malloc (size)); + if (code == NULL) { + fclose (f); + return; + } + size = fread (code, 1, size, f); + fclose (f); + + glShaderSourceARB (vert, 1, &code, &size); + glCompileShaderARB (vert); + if (!CheckObjectStatus (vert)) + exit (0); + + for (i = 0; i < sizeof (attribs) / sizeof (*attribs); i++) + if (attribs[i].dispatch == A && attribs[i].bind != -1) + glBindAttribLocationARB (prog, attribs[i].bind, attribs[i].name); +} + +void InitScene (void) +{ + prog = glCreateProgramObjectARB (); + vert = glCreateShaderObjectARB (GL_VERTEX_SHADER_ARB); + glAttachObjectARB (prog, vert); + glDeleteObjectARB (vert); + load_test_file ("vstest.txt"); + glLinkProgramARB (prog); + if (!CheckObjectStatus (prog)) + exit (0); + glUseProgramObjectARB (prog); +} + +void RenderScene (void) +{ + GLint info_length, length; + char output[65000], *p; + GLint i; + + if (submit_method == SM_MAX) + exit (0); + + /* + * Get the current size of the info log. Any text output produced by executed + * shader will be appended to the end of log. + */ + glGetObjectParameterivARB (vert, GL_OBJECT_INFO_LOG_LENGTH_ARB, &info_length); + + switch (submit_method) + { + case SM_IM: + printf ("\n--- TESTING IMMEDIATE MODE\n"); + im_render (); + break; + case SM_VA: + printf ("\n--- TESTING VERTEX ARRAY MODE\n"); + va_render (); + break; + case SM_IM_DL: + printf ("\n--- TESTING IMMEDIATE + DISPLAY LIST MODE\n"); + dl_start (); + im_render (); + dl_end (); + break; + case SM_VA_DL: + printf ("\n--- TESTING VERTEX ARRAY + DISPLAY LIST MODE\n"); + dl_start (); + va_render (); + dl_end (); + break; + default: + assert (0); + } + + glFlush (); + + /* + * Get the info log and set the pointer to the beginning of the output. + */ + glGetInfoLogARB (vert, sizeof (output), &length, output); + p = output + info_length - 1; + + for (i = 0; i < sizeof (attribs) / sizeof (*attribs); i++) { + GLuint j; + for (j = 0; j < attribs[i].size; j++) { + GLfloat value; + if (p == NULL) { + printf ("*** %s\n", "I/O error"); + break; + } + if (strncmp (p, "true", 4) == 0) + value = 1.0f; + else if (strncmp (p, "false", 5) == 0) + value = 0.0f; + else if (sscanf (p, "%f", &value) != 1) { + printf ("*** %s\n", "I/O error"); + p = NULL; + break; + } + if (fabs (value - attribs[i].data[j]) > EPSILON) + printf ("*** %s\n", "Values are different"); + p = strchr (p, '\n'); + if (p != NULL) + p++; + } + if (p == NULL) + break; + } + + submit_method++; +} + +int main (int argc, char *argv[]) +{ + InitFramework (&argc, argv); + return 0; +} + |