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libobs-opengl: Support mad/uint2/uint3/uint4

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This commit is contained in:
jpark37 2023-04-01 17:22:02 -07:00 committed by Lain
parent c6ce50c9a3
commit 0934e73902
1 changed files with 39 additions and 4 deletions
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43
libobs-opengl/gl-shaderparser.c
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@ -71,6 +71,12 @@ static bool gl_write_type_n(struct gl_shader_parser *glsp, const char *type,
dstr_cat(&glsp->gl_string, "ivec3");
else if (cmp_type(type, len, "int4", 4) == 0)
dstr_cat(&glsp->gl_string, "ivec4");
else if (cmp_type(type, len, "uint2", 5) == 0)
dstr_cat(&glsp->gl_string, "uvec2");
else if (cmp_type(type, len, "uint3", 5) == 0)
dstr_cat(&glsp->gl_string, "uvec3");
else if (cmp_type(type, len, "uint4", 5) == 0)
dstr_cat(&glsp->gl_string, "uvec4");
else if (cmp_type(type, len, "float3x3", 8) == 0)
dstr_cat(&glsp->gl_string, "mat3x3");
else if (cmp_type(type, len, "float3x4", 8) == 0)
@ -267,6 +273,7 @@ static inline void gl_write_structs(struct gl_shader_parser *glsp)
* lerp -> mix
* lit -> (unsupported)
* log10 -> (unsupported)
* mad -> (change to operator) [fma needs GLSL 400]
* mul -> (change to operator)
* rsqrt -> inversesqrt
* saturate -> (use clamp)
@ -280,6 +287,31 @@ static inline void gl_write_structs(struct gl_shader_parser *glsp)
* All else can be left as-is
*/
static bool gl_write_mad(struct gl_shader_parser *glsp,
struct cf_token **p_token)
{
struct cf_parser *cfp = &glsp->parser.cfp;
cfp->cur_token = *p_token;
if (!cf_next_token(cfp))
return false;
if (!cf_token_is(cfp, "("))
return false;
dstr_cat(&glsp->gl_string, "(");
gl_write_function_contents(glsp, &cfp->cur_token, ",");
dstr_cat(&glsp->gl_string, ") * (");
cf_next_token(cfp);
gl_write_function_contents(glsp, &cfp->cur_token, ",");
dstr_cat(&glsp->gl_string, ") + (");
cf_next_token(cfp);
gl_write_function_contents(glsp, &cfp->cur_token, ")");
dstr_cat(&glsp->gl_string, "))");
*p_token = cfp->cur_token;
return true;
}
static bool gl_write_mul(struct gl_shader_parser *glsp,
struct cf_token **p_token)
{
@ -456,18 +488,21 @@ static bool gl_write_intrinsic(struct gl_shader_parser *glsp,
dstr_cat(&glsp->gl_string, "dFdx");
} else if (strref_cmp(&token->str, "ddy") == 0) {
dstr_cat(&glsp->gl_string, "dFdy");
} else if (strref_cmp(&token->str, "fmod") == 0) {
dstr_cat(&glsp->gl_string, "mod");
} else if (strref_cmp(&token->str, "frac") == 0) {
dstr_cat(&glsp->gl_string, "fract");
} else if (strref_cmp(&token->str, "lerp") == 0) {
dstr_cat(&glsp->gl_string, "mix");
} else if (strref_cmp(&token->str, "fmod") == 0) {
dstr_cat(&glsp->gl_string, "mod");
} else if (strref_cmp(&token->str, "mad") == 0) {
/* fma not available in GLSL 330 */
written = gl_write_mad(glsp, &token);
} else if (strref_cmp(&token->str, "mul") == 0) {
written = gl_write_mul(glsp, &token);
} else if (strref_cmp(&token->str, "rsqrt") == 0) {
dstr_cat(&glsp->gl_string, "inversesqrt");
} else if (strref_cmp(&token->str, "saturate") == 0) {
written = gl_write_saturate(glsp, &token);
} else if (strref_cmp(&token->str, "mul") == 0) {
written = gl_write_mul(glsp, &token);
} else if (strref_cmp(&token->str, "sincos") == 0) {
written = gl_write_sincos(glsp, &token);
} else {