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Merge branch 'linux-customshader-compilation-fix' into 'next'

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Linux customshader compilation fix

See merge request STJr/SRB2!2418
This commit is contained in:
sphere 2024-06-24 22:38:19 +00:00
commit 7c4442a340
1 changed files with 102 additions and 1 deletions
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103
src/hardware/hw_shaders.c
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@ -448,6 +448,101 @@ void HWR_LoadAllCustomShaders(void)
HWR_LoadCustomShadersFromFile(i, W_FileHasFolders(wadfiles[i]));
}
static const char version_directives[][14] = {
"#version 330\n",
"#version 150\n",
"#version 140\n",
"#version 130\n",
"#version 120\n",
"#version 110\n",
};
static boolean HWR_VersionDirectiveExists(const char* source)
{
return strncmp(source, "#version", 8) == 0;
}
static char* HWR_PrependVersionDirective(const char* source, UINT32 version_index)
{
const UINT32 version_len = sizeof(version_directives[version_index]) - 1;
const UINT32 source_len = strlen(source);
char* result = Z_Malloc(source_len + version_len + 1, PU_STATIC, NULL);
strcpy(result, version_directives[version_index]);
strcpy(result + version_len, source);
return result;
}
static void HWR_ReplaceVersionInplace(char* shader, UINT32 version_index)
{
shader[9] = version_directives[version_index][9];
shader[10] = version_directives[version_index][10];
shader[11] = version_directives[version_index][11];
}
static boolean HWR_CheckVersionDirectives(const char* vert, const char* frag)
{
return HWR_VersionDirectiveExists(vert) && HWR_VersionDirectiveExists(frag);
}
static void HWR_TryToCompileShaderWithImplicitVersion(INT32 shader_index, INT32 shaderxlat_id)
{
char* vert_shader = gl_shaders[shader_index].vertex;
char* frag_shader = gl_shaders[shader_index].fragment;
boolean vert_shader_version_exists = HWR_VersionDirectiveExists(vert_shader);
boolean frag_shader_version_exists = HWR_VersionDirectiveExists(frag_shader);
if(!vert_shader_version_exists) {
CONS_Alert(CONS_WARNING, "HWR_LoadCustomShadersFromFile: vertex shader '%s' is missing a #version directive\n", HWR_GetShaderName(shaderxlat_id));
}
if(!frag_shader_version_exists) {
CONS_Alert(CONS_WARNING, "HWR_LoadCustomShadersFromFile: fragment shader '%s' is missing a #version directive\n", HWR_GetShaderName(shaderxlat_id));
}
// try to compile as is
HWR_CompileShader(shader_index);
if (gl_shaders[shader_index].compiled)
return;
// try each version directive
for(UINT32 i = 0; i < sizeof(version_directives) / sizeof(version_directives[0]); ++i) {
CONS_Alert(CONS_NOTICE, "HWR_TryToCompileShaderWithImplicitVersion: Trying %s\n", version_directives[i]);
if(!vert_shader_version_exists) {
// first time reallocation would have to be made
if(i == 0) {
void* old = (void*)gl_shaders[shader_index].vertex;
vert_shader = gl_shaders[shader_index].vertex = HWR_PrependVersionDirective(vert_shader, i);
Z_Free(old);
} else {
HWR_ReplaceVersionInplace(vert_shader, i);
}
}
if(!frag_shader_version_exists) {
if(i == 0) {
void* old = (void*)gl_shaders[shader_index].fragment;
frag_shader = gl_shaders[shader_index].fragment = HWR_PrependVersionDirective(frag_shader, i);
Z_Free(old);
} else {
HWR_ReplaceVersionInplace(frag_shader, i);
}
}
HWR_CompileShader(shader_index);
if (gl_shaders[shader_index].compiled) {
CONS_Alert(CONS_NOTICE, "HWR_TryToCompileShaderWithImplicitVersion: Compiled with %s\n",
version_directives[i]);
CONS_Alert(CONS_WARNING, "Implicit GLSL version is used. Correct behavior is not guaranteed\n");
return;
}
}
}
void HWR_LoadCustomShadersFromFile(UINT16 wadnum, boolean PK3)
{
UINT16 lump;
@ -610,7 +705,13 @@ skip_field:
gl_shaders[shader_index].fragment = Z_StrDup(gl_shadersources[i].fragment);
if (!gl_shaders[shader_index].vertex)
gl_shaders[shader_index].vertex = Z_StrDup(gl_shadersources[i].vertex);
HWR_CompileShader(shader_index);
if(!HWR_CheckVersionDirectives(gl_shaders[shader_index].vertex, gl_shaders[shader_index].fragment)) {
HWR_TryToCompileShaderWithImplicitVersion(shader_index, i);
} else {
HWR_CompileShader(shader_index);
}
if (!gl_shaders[shader_index].compiled)
CONS_Alert(CONS_ERROR, "HWR_LoadCustomShadersFromFile: A compilation error occured for the %s shader in file %s. See the console messages above for more information.\n", shaderxlat[i].type, wadfiles[wadnum]->filename);
}