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[svn] Filling in some initial GLSL output. Not even close to done!
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--HG--
branch : trunk
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icculus committed Mar 24, 2008
1 parent af52cce commit f90242e
Showing 1 changed file with 97 additions and 17 deletions.
114 changes: 97 additions & 17 deletions mojoshader.c
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Expand Up @@ -271,6 +271,7 @@ struct Context
OutputList output;
OutputList *output_tail;
int output_len; // total strlen; prevents walking the list just to malloc.
int indent;
const char *endline;
int endline_len;
const char *failstr;
Expand Down Expand Up @@ -359,9 +360,12 @@ static int output_line(Context *ctx, const char *fmt, ...)
return out_of_memory(ctx);

char *scratch = get_scratch_buffer(ctx);

const int indent = ctx->indent;
memset(scratch, '\t', indent);
va_list ap;
va_start(ap, fmt);
const int len = vsnprintf(scratch, SCRATCH_BUFFER_SIZE, fmt, ap);
const int len = vsnprintf(scratch+indent, SCRATCH_BUFFER_SIZE-indent, fmt, ap) + indent;
va_end(ap);

item->str = (char *) ctx->malloc(len + 1);
Expand All @@ -378,8 +382,9 @@ static int output_line(Context *ctx, const char *fmt, ...)
strcpy(item->str, scratch); // copy it over.
else
{
memset(item->str, '\t', indent);
va_start(ap, fmt);
vsnprintf(item->str, len + 1, fmt, ap); // rebuild it.
vsnprintf(item->str+indent, len + 1, fmt, ap); // rebuild it.
va_end(ap);
} // else

Expand Down Expand Up @@ -1080,6 +1085,36 @@ static void emit_D3D_DCL(Context *ctx)
#define AT_LEAST_ONE_PROFILE 1
#define PROFILE_EMITTER_GLSL(op) emit_GLSL_##op,

static char *make_GLSL_destarg_string(Context *ctx, const int idx)
{
if (idx >= STATICARRAYLEN(ctx->dest_args))
{
fail(ctx, "Too many destination args");
return "";
} // if

//const DestArgInfo *arg = &ctx->dest_args[idx];

char *retval = get_scratch_buffer(ctx);
snprintf(retval, SCRATCH_BUFFER_SIZE, "dst%d", idx);
return retval;
} // make_GLSL_destarg_string


static char *make_GLSL_sourcearg_string(Context *ctx, const int idx)
{
if (idx >= STATICARRAYLEN(ctx->source_args))
{
fail(ctx, "Too many source args");
return "";
} // if

//const SourceArgInfo *arg = &ctx->source_args[idx];
char *retval = get_scratch_buffer(ctx);
snprintf(retval, SCRATCH_BUFFER_SIZE, "src%d", idx);
return retval;
} // make_GLSL_sourcearg_string

static void emit_GLSL_start(Context *ctx)
{
const uint major = (uint) ctx->major_ver;
Expand All @@ -1095,10 +1130,12 @@ static void emit_GLSL_start(Context *ctx)
} // else

output_line(ctx, "void main() {");
ctx->indent++;
} // emit_GLSL_start

static void emit_GLSL_end(Context *ctx)
{
ctx->indent--;
output_line(ctx, "}");
} // emit_GLSL_end

Expand All @@ -1114,77 +1151,120 @@ static void emit_GLSL_NOP(Context *ctx)

static void emit_GLSL_MOV(Context *ctx)
{
fail(ctx, "unimplemented."); // !!! FIXME
const char *dst0 = make_GLSL_destarg_string(ctx, 0);
const char *src0 = make_GLSL_sourcearg_string(ctx, 0);
output_line(ctx, "%s = %s;", dst0, src0);
} // emit_GLSL_MOV

static void emit_GLSL_ADD(Context *ctx)
{
fail(ctx, "unimplemented."); // !!! FIXME
const char *dst0 = make_GLSL_destarg_string(ctx, 0);
const char *src0 = make_GLSL_sourcearg_string(ctx, 0);
const char *src1 = make_GLSL_sourcearg_string(ctx, 1);
output_line(ctx, "%s = %s + %s;", dst0, src0, src1);
} // emit_GLSL_ADD

static void emit_GLSL_SUB(Context *ctx)
{
fail(ctx, "unimplemented."); // !!! FIXME
const char *dst0 = make_GLSL_destarg_string(ctx, 0);
const char *src0 = make_GLSL_sourcearg_string(ctx, 0);
const char *src1 = make_GLSL_sourcearg_string(ctx, 1);
output_line(ctx, "%s = %s - %s;", dst0, src0, src1);
} // emit_GLSL_SUB

static void emit_GLSL_MAD(Context *ctx)
{
fail(ctx, "unimplemented."); // !!! FIXME
const char *dst0 = make_GLSL_destarg_string(ctx, 0);
const char *src0 = make_GLSL_sourcearg_string(ctx, 0);
const char *src1 = make_GLSL_sourcearg_string(ctx, 1);
const char *src2 = make_GLSL_sourcearg_string(ctx, 2);
output_line(ctx, "%s = (%s * %s) + %s;", dst0, src0, src1, src2);
} // emit_GLSL_MAD

static void emit_GLSL_MUL(Context *ctx)
{
fail(ctx, "unimplemented."); // !!! FIXME
const char *dst0 = make_GLSL_destarg_string(ctx, 0);
const char *src0 = make_GLSL_sourcearg_string(ctx, 0);
const char *src1 = make_GLSL_sourcearg_string(ctx, 1);
output_line(ctx, "%s = %s * %s;", dst0, src0, src1);
} // emit_GLSL_MUL

static void emit_GLSL_RCP(Context *ctx)
{
fail(ctx, "unimplemented."); // !!! FIXME
const char *dst0 = make_GLSL_destarg_string(ctx, 0);
const char *src0 = make_GLSL_sourcearg_string(ctx, 0);
output_line(ctx, "%s = 1.0 / %s;", dst0, src0);
} // emit_GLSL_RCP

static void emit_GLSL_RSQ(Context *ctx)
{
fail(ctx, "unimplemented."); // !!! FIXME
const char *dst0 = make_GLSL_destarg_string(ctx, 0);
const char *src0 = make_GLSL_sourcearg_string(ctx, 0);
output_line(ctx, "%s = inversesqrt(%s);", dst0, src0);
} // emit_GLSL_RSQ

static void emit_GLSL_DP3(Context *ctx)
{
fail(ctx, "unimplemented."); // !!! FIXME
const char *dst0 = make_GLSL_destarg_string(ctx, 0);
const char *src0 = make_GLSL_sourcearg_string(ctx, 0);
const char *src1 = make_GLSL_sourcearg_string(ctx, 1);
output_line(ctx, "%s = dot(vec3(%s), vec3(%s));", dst0, src0, src1);
} // emit_GLSL_DP3

static void emit_GLSL_DP4(Context *ctx)
{
fail(ctx, "unimplemented."); // !!! FIXME
const char *dst0 = make_GLSL_destarg_string(ctx, 0);
const char *src0 = make_GLSL_sourcearg_string(ctx, 0);
const char *src1 = make_GLSL_sourcearg_string(ctx, 1);
output_line(ctx, "%s = dot(vec4(%s), vec4(%s));", dst0, src0, src1);
} // emit_GLSL_DP4

static void emit_GLSL_MIN(Context *ctx)
{
fail(ctx, "unimplemented."); // !!! FIXME
const char *dst0 = make_GLSL_destarg_string(ctx, 0);
const char *src0 = make_GLSL_sourcearg_string(ctx, 0);
const char *src1 = make_GLSL_sourcearg_string(ctx, 1);
output_line(ctx, "%s = min(%s, %s);", dst0, src0, src1);
} // emit_GLSL_MIN

static void emit_GLSL_MAX(Context *ctx)
{
fail(ctx, "unimplemented."); // !!! FIXME
const char *dst0 = make_GLSL_destarg_string(ctx, 0);
const char *src0 = make_GLSL_sourcearg_string(ctx, 0);
const char *src1 = make_GLSL_sourcearg_string(ctx, 1);
output_line(ctx, "%s = max(%s, %s);", dst0, src0, src1);
} // emit_GLSL_MAX

static void emit_GLSL_SLT(Context *ctx)
{
fail(ctx, "unimplemented."); // !!! FIXME
const char *dst0 = make_GLSL_destarg_string(ctx, 0);
const char *src0 = make_GLSL_sourcearg_string(ctx, 0);
const char *src1 = make_GLSL_sourcearg_string(ctx, 1);
// !!! FIXME: need to cast from bvec to vec...
output_line(ctx, "%s = lessThan(%s, %s);", dst0, src0, src1);
} // emit_GLSL_SLT

static void emit_GLSL_SGE(Context *ctx)
{
fail(ctx, "unimplemented."); // !!! FIXME
const char *dst0 = make_GLSL_destarg_string(ctx, 0);
const char *src0 = make_GLSL_sourcearg_string(ctx, 0);
const char *src1 = make_GLSL_sourcearg_string(ctx, 1);
// !!! FIXME: need to cast from bvec to vec...
output_line(ctx, "%s = greaterThanEqual(%s, %s);", dst0, src0, src1);
} // emit_GLSL_SGE

static void emit_GLSL_EXP(Context *ctx)
{
fail(ctx, "unimplemented."); // !!! FIXME
const char *dst0 = make_GLSL_destarg_string(ctx, 0);
const char *src0 = make_GLSL_sourcearg_string(ctx, 0);
output_line(ctx, "%s = exp2(%s);", dst0, src0);
} // emit_GLSL_EXP

static void emit_GLSL_LOG(Context *ctx)
{
fail(ctx, "unimplemented."); // !!! FIXME
const char *dst0 = make_GLSL_destarg_string(ctx, 0);
const char *src0 = make_GLSL_sourcearg_string(ctx, 0);
output_line(ctx, "%s = log2(%s);", dst0, src0);
} // emit_GLSL_LOG

static void emit_GLSL_LIT(Context *ctx)
Expand Down

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