testparse.c
author Ryan C. Gordon <icculus@icculus.org>
Tue, 26 Aug 2008 05:54:49 -0400
changeset 450 6a9faf398c1d
parent 438 73492129c1af
child 475 ea119c8ce5cd
permissions -rw-r--r--
Allow overriding of swizzle on vertex attributes during bytecode parsing. This lets you compile a shader that you know wants ARGB color data, for example, when you're definitely going to pass it RGBA. The parser will handle this by changing the swizzle on that input register (including handling swizzling explicit swizzles), at no extra cost over not overriding swizzling; it does not generate any extra shader opcodes.
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/**
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 * MojoShader; generate shader programs from bytecode of compiled
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 *  Direct3D shaders.
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 *
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 * Please see the file LICENSE.txt in the source's root directory.
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 *
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 *  This file written by Ryan C. Gordon.
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 */
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#include <stdio.h>
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#include <stdlib.h>
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#include "mojoshader.h"
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#ifdef _MSC_VER
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#define snprintf _snprintf
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#endif
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#if MOJOSHADER_DEBUG_MALLOC
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static void *Malloc(int len)
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{
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    void *ptr = malloc(len + sizeof (int));
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    int *store = (int *) ptr;
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    printf("malloc() %d bytes (%p)\n", len, ptr);
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    if (ptr == NULL) return NULL;
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    *store = len;
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    return (void *) (store + 1);
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} // Malloc
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static void Free(void *_ptr)
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{
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    int *ptr = (((int *) _ptr) - 1);
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    int len = *ptr;
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    printf("free() %d bytes (%p)\n", len, ptr);
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    free(ptr);
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} // Free
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#else
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#define Malloc NULL
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#define Free NULL
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#endif
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static const char *shader_type(const MOJOSHADER_shaderType s)
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{
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    switch (s)
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    {
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        case MOJOSHADER_TYPE_UNKNOWN: return "unknown";
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        case MOJOSHADER_TYPE_PIXEL: return "pixel";
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        case MOJOSHADER_TYPE_VERTEX: return "vertex";
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        case MOJOSHADER_TYPE_GEOMETRY: return "geometry";
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        default: return "(bogus value?)";
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    } // switch
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    return NULL;  // shouldn't hit this.
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} // shader_type
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static int do_parse(const unsigned char *buf, const int len, const char *prof)
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{
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    const MOJOSHADER_parseData *pd;
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    int retval = 0;
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    pd = MOJOSHADER_parse(prof, buf, len, NULL, 0, Malloc, Free, NULL);
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    printf("PROFILE: %s\n", prof);
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    if (pd->error != NULL)
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        printf("ERROR: %s\n", pd->error);
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    else
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    {
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        retval = 1;
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        printf("SHADER TYPE: %s\n", shader_type(pd->shader_type));
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        printf("VERSION: %d.%d\n", pd->major_ver, pd->minor_ver);
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        printf("INSTRUCTION COUNT: %d\n", (int) pd->instruction_count);
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        printf("ATTRIBUTES:");
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        if (pd->attribute_count == 0)
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            printf(" (none.)\n");
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        else
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        {
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            int i;
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            printf("\n");
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            for (i = 0; i < pd->attribute_count; i++)
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            {
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                static const char *usagenames[] = {
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                    "position", "blendweight", "blendindices", "normal",
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                    "psize", "texcoord", "tangent", "binormal", "tessfactor",
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                    "positiont", "color", "fog", "depth", "sample"
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                };
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                const MOJOSHADER_attribute *a = &pd->attributes[i];
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                char numstr[16] = { 0 };
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                if (a->index != 0)
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                    snprintf(numstr, sizeof (numstr), "%d", a->index);
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                printf("    * %s%s", usagenames[(int) a->usage], numstr);
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                if (a->name != NULL)
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                    printf(" (\"%s\")", a->name);
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                printf("\n");
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            } // for
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        } // else
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        printf("CONSTANTS:");
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        if (pd->constant_count == 0)
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            printf(" (none.)\n");
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        else
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        {
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            int i;
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            printf("\n");
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            for (i = 0; i < pd->constant_count; i++)
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            {
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                static const char *typenames[] = { "float", "int", "bool" };
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                const MOJOSHADER_constant *c = &pd->constants[i];
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                printf("    * %d: %s (", c->index, typenames[(int) c->type]);
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                if (c->type == MOJOSHADER_UNIFORM_FLOAT)
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                {
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                    printf("%f %f %f %f", c->value.f[0], c->value.f[1],
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                                          c->value.f[2], c->value.f[3]);
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                } // if
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                else if (c->type == MOJOSHADER_UNIFORM_INT)
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                {
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                    printf("%d %d %d %d", c->value.i[0], c->value.i[1],
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                                          c->value.i[2], c->value.i[3]);
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                } // else if
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                else if (c->type == MOJOSHADER_UNIFORM_BOOL)
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                {
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                    printf("%s", c->value.b ? "true" : "false");
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                } // else if
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                else
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                {
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                    printf("???");
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                } // else
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                printf(")\n");
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            } // for
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        } // else
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        printf("UNIFORMS:");
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        if (pd->uniform_count == 0)
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            printf(" (none.)\n");
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        else
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        {
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            int i;
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            printf("\n");
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            for (i = 0; i < pd->uniform_count; i++)
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            {
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                static const char *typenames[] = { "float", "int", "bool" };
92
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                const MOJOSHADER_uniform *u = &pd->uniforms[i];
280
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                const char *arrayof = "";
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                const char *constant = u->constant ? "const " : "";
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                char arrayrange[64] = { '\0' };
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                if (u->array_count > 0)
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                {
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                    arrayof = "array[";
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                    snprintf(arrayrange, sizeof (arrayrange), "%d] ",
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                             u->array_count);
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                } // if
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                printf("    * %d: %s%s%s%s", u->index, constant, arrayof,
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                        arrayrange, typenames[(int) u->type]);
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                if (u->name != NULL)
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                    printf(" (\"%s\")", u->name);
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                printf("\n");
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            } // for
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        } // else
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148
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        printf("SAMPLERS:");
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        if (pd->sampler_count == 0)
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            printf(" (none.)\n");
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        else
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        {
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            int i;
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            printf("\n");
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            for (i = 0; i < pd->sampler_count; i++)
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            {
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                static const char *typenames[] = { "2d", "cube", "volume" };
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                const MOJOSHADER_sampler *s = &pd->samplers[i];
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                printf("    * %d: %s", s->index, typenames[(int) s->type]);
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                if (s->name != NULL)
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                    printf(" (\"%s\")", s->name);
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                printf("\n");
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            } // for
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        } // else
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        if (pd->output != NULL)
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        {
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            int i;
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            printf("OUTPUT:\n");
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            for (i = 0; i < pd->output_len; i++)
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                putchar((int) pd->output[i]);
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            printf("\n");
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        } // if
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    } // else
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    printf("\n\n");
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    MOJOSHADER_freeParseData(pd);
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    return retval;
46
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} // do_parse
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int main(int argc, char **argv)
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{
142
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    int retval = 0;
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    printf("MojoShader testparse\n");
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    printf("Compiled against version %d\n", MOJOSHADER_VERSION);
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    printf("Linked against version %d\n", MOJOSHADER_version());
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    printf("\n");
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    if (argc <= 2)
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        printf("\n\nUSAGE: %s <profile> [file1] ... [fileN]\n\n", argv[0]);
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   206
    else
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    {
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        const char *profile = argv[1];
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        int i;
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        for (i = 2; i < argc; i++)
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        {
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   213
            FILE *io = fopen(argv[i], "rb");
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            printf("FILE: %s\n", argv[i]);
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   215
            if (io == NULL)
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                printf(" ... fopen('%s') failed.\n", argv[i]);
47
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   217
            else
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   218
            {
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   219
                unsigned char *buf = (unsigned char *) malloc(1000000);
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   220
                int rc = fread(buf, 1, 1000000, io);
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   221
                fclose(io);
142
e064b4cefb4e Return a more-meaningful pass/fail error code from testparse main().
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   222
                if (!do_parse(buf, rc, profile))
e064b4cefb4e Return a more-meaningful pass/fail error code from testparse main().
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   223
                    retval = 1;
47
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   224
                free(buf);
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   225
            } // else
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   226
        } // for
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   227
    } // else
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   228
142
e064b4cefb4e Return a more-meaningful pass/fail error code from testparse main().
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   229
    return retval;
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   230
} // main
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// end of testparse.c ...
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   233