glsl: split out libstandalone

Split standalone glsl_compiler into a libstandalone.la and a thin
main.cpp.  This way drivers can re-use the glsl standalone frontend in
their own standalone compilers.

Signed-off-by: Rob Clark <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>

1 files changed, 15 insertions, 365 deletions

diff --git a/src/compiler/glsl/main.cpp b/src/compiler/glsl/main.cpp
index d2535758e1a..f65b1854d32 100644
--- a/src/compiler/glsl/main.cpp
+++ b/src/compiler/glsl/main.cpp
@@ -20,6 +20,8 @@
  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  * DEALINGS IN THE SOFTWARE.
  */
+
+#include <stdio.h>
 #include <getopt.h>
 
 /** @file main.cpp
@@ -31,255 +33,16 @@
  * offline compile GLSL code and examine the resulting GLSL IR.
  */
 
-#include "ast.h"
-#include "glsl_parser_extras.h"
-#include "ir_optimization.h"
-#include "program.h"
-#include "program/hash_table.h"
-#include "loop_analysis.h"
-#include "standalone_scaffolding.h"
-
-static int glsl_version = 330;
-
-static void
-initialize_context(struct gl_context *ctx, gl_api api)
-{
-   initialize_context_to_defaults(ctx, api);
-
-   /* The standalone compiler needs to claim support for almost
-    * everything in order to compile the built-in functions.
-    */
-   ctx->Const.GLSLVersion = glsl_version;
-   ctx->Extensions.ARB_ES3_compatibility = true;
-   ctx->Const.MaxComputeWorkGroupCount[0] = 65535;
-   ctx->Const.MaxComputeWorkGroupCount[1] = 65535;
-   ctx->Const.MaxComputeWorkGroupCount[2] = 65535;
-   ctx->Const.MaxComputeWorkGroupSize[0] = 1024;
-   ctx->Const.MaxComputeWorkGroupSize[1] = 1024;
-   ctx->Const.MaxComputeWorkGroupSize[2] = 64;
-   ctx->Const.MaxComputeWorkGroupInvocations = 1024;
-   ctx->Const.MaxComputeSharedMemorySize = 32768;
-   ctx->Const.Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits = 16;
-   ctx->Const.Program[MESA_SHADER_COMPUTE].MaxUniformComponents = 1024;
-   ctx->Const.Program[MESA_SHADER_COMPUTE].MaxCombinedUniformComponents = 1024;
-   ctx->Const.Program[MESA_SHADER_COMPUTE].MaxInputComponents = 0; /* not used */
-   ctx->Const.Program[MESA_SHADER_COMPUTE].MaxOutputComponents = 0; /* not used */
-   ctx->Const.Program[MESA_SHADER_COMPUTE].MaxAtomicBuffers = 8;
-   ctx->Const.Program[MESA_SHADER_COMPUTE].MaxAtomicCounters = 8;
-   ctx->Const.Program[MESA_SHADER_COMPUTE].MaxImageUniforms = 8;
-   ctx->Const.Program[MESA_SHADER_COMPUTE].MaxUniformBlocks = 12;
-
-   switch (ctx->Const.GLSLVersion) {
-   case 100:
-      ctx->Const.MaxClipPlanes = 0;
-      ctx->Const.MaxCombinedTextureImageUnits = 8;
-      ctx->Const.MaxDrawBuffers = 2;
-      ctx->Const.MinProgramTexelOffset = 0;
-      ctx->Const.MaxProgramTexelOffset = 0;
-      ctx->Const.MaxLights = 0;
-      ctx->Const.MaxTextureCoordUnits = 0;
-      ctx->Const.MaxTextureUnits = 8;
-
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs = 8;
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits = 0;
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxUniformComponents = 128 * 4;
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxCombinedUniformComponents = 128 * 4;
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxInputComponents = 0; /* not used */
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents = 32;
-
-      ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits =
-         ctx->Const.MaxCombinedTextureImageUnits;
-      ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxUniformComponents = 16 * 4;
-      ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxCombinedUniformComponents = 16 * 4;
-      ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents =
-         ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents;
-      ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxOutputComponents = 0; /* not used */
-
-      ctx->Const.MaxVarying = ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents / 4;
-      break;
-   case 110:
-   case 120:
-      ctx->Const.MaxClipPlanes = 6;
-      ctx->Const.MaxCombinedTextureImageUnits = 2;
-      ctx->Const.MaxDrawBuffers = 1;
-      ctx->Const.MinProgramTexelOffset = 0;
-      ctx->Const.MaxProgramTexelOffset = 0;
-      ctx->Const.MaxLights = 8;
-      ctx->Const.MaxTextureCoordUnits = 2;
-      ctx->Const.MaxTextureUnits = 2;
-
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs = 16;
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits = 0;
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxUniformComponents = 512;
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxCombinedUniformComponents = 512;
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxInputComponents = 0; /* not used */
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents = 32;
-
-      ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits =
-         ctx->Const.MaxCombinedTextureImageUnits;
-      ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxUniformComponents = 64;
-      ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxCombinedUniformComponents = 64;
-      ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents =
-         ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents;
-      ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxOutputComponents = 0; /* not used */
-
-      ctx->Const.MaxVarying = ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents / 4;
-      break;
-   case 130:
-   case 140:
-      ctx->Const.MaxClipPlanes = 8;
-      ctx->Const.MaxCombinedTextureImageUnits = 16;
-      ctx->Const.MaxDrawBuffers = 8;
-      ctx->Const.MinProgramTexelOffset = -8;
-      ctx->Const.MaxProgramTexelOffset = 7;
-      ctx->Const.MaxLights = 8;
-      ctx->Const.MaxTextureCoordUnits = 8;
-      ctx->Const.MaxTextureUnits = 2;
-
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs = 16;
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits = 16;
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxUniformComponents = 1024;
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxCombinedUniformComponents = 1024;
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxInputComponents = 0; /* not used */
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents = 64;
-
-      ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits = 16;
-      ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxUniformComponents = 1024;
-      ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxCombinedUniformComponents = 1024;
-      ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents =
-         ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents;
-      ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxOutputComponents = 0; /* not used */
-
-      ctx->Const.MaxVarying = ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents / 4;
-      break;
-   case 150:
-   case 330:
-      ctx->Const.MaxClipPlanes = 8;
-      ctx->Const.MaxDrawBuffers = 8;
-      ctx->Const.MinProgramTexelOffset = -8;
-      ctx->Const.MaxProgramTexelOffset = 7;
-      ctx->Const.MaxLights = 8;
-      ctx->Const.MaxTextureCoordUnits = 8;
-      ctx->Const.MaxTextureUnits = 2;
-
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs = 16;
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits = 16;
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxUniformComponents = 1024;
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxCombinedUniformComponents = 1024;
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxInputComponents = 0; /* not used */
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents = 64;
-
-      ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits = 16;
-      ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxUniformComponents = 1024;
-      ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxCombinedUniformComponents = 1024;
-      ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxInputComponents =
-         ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents;
-      ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxOutputComponents = 128;
-
-      ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits = 16;
-      ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxUniformComponents = 1024;
-      ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxCombinedUniformComponents = 1024;
-      ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents =
-         ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxOutputComponents;
-      ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxOutputComponents = 0; /* not used */
-
-      ctx->Const.MaxCombinedTextureImageUnits =
-         ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits
-         + ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits
-         + ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits;
-
-      ctx->Const.MaxGeometryOutputVertices = 256;
-      ctx->Const.MaxGeometryTotalOutputComponents = 1024;
-
-      ctx->Const.MaxVarying = 60 / 4;
-      break;
-   case 300:
-      ctx->Const.MaxClipPlanes = 8;
-      ctx->Const.MaxCombinedTextureImageUnits = 32;
-      ctx->Const.MaxDrawBuffers = 4;
-      ctx->Const.MinProgramTexelOffset = -8;
-      ctx->Const.MaxProgramTexelOffset = 7;
-      ctx->Const.MaxLights = 0;
-      ctx->Const.MaxTextureCoordUnits = 0;
-      ctx->Const.MaxTextureUnits = 0;
-
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs = 16;
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits = 16;
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxUniformComponents = 1024;
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxCombinedUniformComponents = 1024;
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxInputComponents = 0; /* not used */
-      ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents = 16 * 4;
-
-      ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits = 16;
-      ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxUniformComponents = 224;
-      ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxCombinedUniformComponents = 224;
-      ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents = 15 * 4;
-      ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxOutputComponents = 0; /* not used */
-
-      ctx->Const.MaxVarying = ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents / 4;
-      break;
-   }
-
-   ctx->Const.GenerateTemporaryNames = true;
-   ctx->Const.MaxPatchVertices = 32;
-
-   ctx->Driver.NewShader = _mesa_new_shader;
-}
-
-/* Returned string will have 'ctx' as its ralloc owner. */
-static char *
-load_text_file(void *ctx, const char *file_name)
-{
-	char *text = NULL;
-	size_t size;
-	size_t total_read = 0;
-	FILE *fp = fopen(file_name, "rb");
-
-	if (!fp) {
-		return NULL;
-	}
-
-	fseek(fp, 0L, SEEK_END);
-	size = ftell(fp);
-	fseek(fp, 0L, SEEK_SET);
-
-	text = (char *) ralloc_size(ctx, size + 1);
-	if (text != NULL) {
-		do {
-			size_t bytes = fread(text + total_read,
-					     1, size - total_read, fp);
-			if (bytes < size - total_read) {
-				free(text);
-				text = NULL;
-				goto error;
-			}
-
-			if (bytes == 0) {
-				break;
-			}
-
-			total_read += bytes;
-		} while (total_read < size);
+#include "main/mtypes.h"
+#include "standalone.h"
 
-		text[total_read] = '\0';
-error:;
-	}
-
-	fclose(fp);
-
-	return text;
-}
-
-int dump_ast = 0;
-int dump_hir = 0;
-int dump_lir = 0;
-int do_link = 0;
+static struct standalone_options options;
 
 const struct option compiler_opts[] = {
-   { "dump-ast", no_argument, &dump_ast, 1 },
-   { "dump-hir", no_argument, &dump_hir, 1 },
-   { "dump-lir", no_argument, &dump_lir, 1 },
-   { "link",     no_argument, &do_link,  1 },
+   { "dump-ast", no_argument, &options.dump_ast, 1 },
+   { "dump-hir", no_argument, &options.dump_hir, 1 },
+   { "dump-lir", no_argument, &options.dump_lir, 1 },
+   { "link",     no_argument, &options.do_link,  1 },
    { "version",  required_argument, NULL, 'v' },
    { NULL, 0, NULL, 0 }
 };
@@ -302,147 +65,34 @@ usage_fail(const char *name)
    exit(EXIT_FAILURE);
 }
 
-
-void
-compile_shader(struct gl_context *ctx, struct gl_shader *shader)
-{
-   struct _mesa_glsl_parse_state *state =
-      new(shader) _mesa_glsl_parse_state(ctx, shader->Stage, shader);
-
-   _mesa_glsl_compile_shader(ctx, shader, dump_ast, dump_hir);
-
-   /* Print out the resulting IR */
-   if (!state->error && dump_lir) {
-      _mesa_print_ir(stdout, shader->ir, state);
-   }
-
-   return;
-}
-
 int
-main(int argc, char **argv)
+main(int argc, char * const* argv)
 {
    int status = EXIT_SUCCESS;
-   struct gl_context local_ctx;
-   struct gl_context *ctx = &local_ctx;
-   bool glsl_es = false;
 
    int c;
    int idx = 0;
    while ((c = getopt_long(argc, argv, "", compiler_opts, &idx)) != -1) {
       switch (c) {
       case 'v':
-         glsl_version = strtol(optarg, NULL, 10);
-         switch (glsl_version) {
-         case 100:
-         case 300:
-            glsl_es = true;
-            break;
-         case 110:
-         case 120:
-         case 130:
-         case 140:
-         case 150:
-         case 330:
-            glsl_es = false;
-            break;
-         default:
-            fprintf(stderr, "Unrecognized GLSL version `%s'\n", optarg);
-            usage_fail(argv[0]);
-            break;
-         }
+         options.glsl_version = strtol(optarg, NULL, 10);
          break;
       default:
          break;
       }
    }
 
-
    if (argc <= optind)
       usage_fail(argv[0]);
 
-   initialize_context(ctx, (glsl_es) ? API_OPENGLES2 : API_OPENGL_COMPAT);
-
    struct gl_shader_program *whole_program;
 
-   whole_program = rzalloc (NULL, struct gl_shader_program);
-   assert(whole_program != NULL);
-   whole_program->InfoLog = ralloc_strdup(whole_program, "");
-
-   /* Created just to avoid segmentation faults */
-   whole_program->AttributeBindings = new string_to_uint_map;
-   whole_program->FragDataBindings = new string_to_uint_map;
-   whole_program->FragDataIndexBindings = new string_to_uint_map;
-
-   for (/* empty */; argc > optind; optind++) {
-      whole_program->Shaders =
-	 reralloc(whole_program, whole_program->Shaders,
-		  struct gl_shader *, whole_program->NumShaders + 1);
-      assert(whole_program->Shaders != NULL);
+   whole_program = standalone_compile_shader(&options, argc - optind, &argv[optind]);
 
-      struct gl_shader *shader = rzalloc(whole_program, gl_shader);
-
-      whole_program->Shaders[whole_program->NumShaders] = shader;
-      whole_program->NumShaders++;
-
-      const unsigned len = strlen(argv[optind]);
-      if (len < 6)
-	 usage_fail(argv[0]);
-
-      const char *const ext = & argv[optind][len - 5];
-      if (strncmp(".vert", ext, 5) == 0 || strncmp(".glsl", ext, 5) == 0)
-	 shader->Type = GL_VERTEX_SHADER;
-      else if (strncmp(".tesc", ext, 5) == 0)
-	 shader->Type = GL_TESS_CONTROL_SHADER;
-      else if (strncmp(".tese", ext, 5) == 0)
-	 shader->Type = GL_TESS_EVALUATION_SHADER;
-      else if (strncmp(".geom", ext, 5) == 0)
-	 shader->Type = GL_GEOMETRY_SHADER;
-      else if (strncmp(".frag", ext, 5) == 0)
-	 shader->Type = GL_FRAGMENT_SHADER;
-      else if (strncmp(".comp", ext, 5) == 0)
-         shader->Type = GL_COMPUTE_SHADER;
-      else
-	 usage_fail(argv[0]);
-      shader->Stage = _mesa_shader_enum_to_shader_stage(shader->Type);
-
-      shader->Source = load_text_file(whole_program, argv[optind]);
-      if (shader->Source == NULL) {
-	 printf("File \"%s\" does not exist.\n", argv[optind]);
-	 exit(EXIT_FAILURE);
-      }
-
-      compile_shader(ctx, shader);
-
-      if (strlen(shader->InfoLog) > 0)
-	 printf("Info log for %s:\n%s\n", argv[optind], shader->InfoLog);
-
-      if (!shader->CompileStatus) {
-	 status = EXIT_FAILURE;
-	 break;
-      }
-   }
-
-   if ((status == EXIT_SUCCESS) && do_link)  {
-      _mesa_clear_shader_program_data(whole_program);
-
-      link_shaders(ctx, whole_program);
-      status = (whole_program->LinkStatus) ? EXIT_SUCCESS : EXIT_FAILURE;
-
-      if (strlen(whole_program->InfoLog) > 0)
-	 printf("Info log for linking:\n%s\n", whole_program->InfoLog);
-   }
-
-   for (unsigned i = 0; i < MESA_SHADER_STAGES; i++)
-      ralloc_free(whole_program->_LinkedShaders[i]);
-
-   delete whole_program->AttributeBindings;
-   delete whole_program->FragDataBindings;
-   delete whole_program->FragDataIndexBindings;
+   if (!whole_program)
+      usage_fail(argv[0]);
 
-   ralloc_free(whole_program);
-   _mesa_glsl_release_types();
-   _mesa_glsl_release_builtin_functions();
+   standalone_compiler_cleanup(whole_program);
 
    return status;
 }