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, 433 insertions, 0 deletions

diff --git a/src/compiler/glsl/standalone.cpp b/src/compiler/glsl/standalone.cpp
new file mode 100644
index 00000000000..e5b9057cd01
--- /dev/null
+++ b/src/compiler/glsl/standalone.cpp
@@ -0,0 +1,433 @@
+/*
+ * Copyright © 2008, 2009 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+#include <getopt.h>
+
+/** @file standalone.cpp
+ *
+ * Standalone compiler helper lib.  Used by standalone glsl_compiler and
+ * also available to drivers to implement their own standalone compiler
+ * with driver backend.
+ */
+
+#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"
+#include "standalone.h"
+
+static const struct standalone_options *options;
+
+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 = options->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);
+
+      text[total_read] = '\0';
+      error:;
+   }
+
+   fclose(fp);
+
+   return text;
+}
+
+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, options->dump_ast, options->dump_hir);
+
+   /* Print out the resulting IR */
+   if (!state->error && options->dump_lir) {
+      _mesa_print_ir(stdout, shader->ir, state);
+   }
+
+   return;
+}
+
+void
+init_gl_program(struct gl_program *prog, GLenum target)
+{
+   mtx_init(&prog->Mutex, mtx_plain);
+
+   prog->RefCount = 1;
+   prog->Format = GL_PROGRAM_FORMAT_ASCII_ARB;
+
+   /* default mapping from samplers to texture units */
+   for (int i = 0; i < MAX_SAMPLERS; i++)
+      prog->SamplerUnits[i] = i;
+}
+
+extern "C" struct gl_shader_program *
+standalone_compile_shader(const struct standalone_options *_options,
+      unsigned num_files, char* const* files)
+{
+   int status = EXIT_SUCCESS;
+   static struct gl_context local_ctx;
+   struct gl_context *ctx = &local_ctx;
+   bool glsl_es = false;
+
+   options = _options;
+
+   switch (options->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 `%d'\n", options->glsl_version);
+      return NULL;
+   }
+
+   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 (unsigned i = 0; i < num_files; i++) {
+      whole_program->Shaders =
+            reralloc(whole_program, whole_program->Shaders,
+                  struct gl_shader *, whole_program->NumShaders + 1);
+      assert(whole_program->Shaders != NULL);
+
+      struct gl_shader *shader = rzalloc(whole_program, gl_shader);
+
+      whole_program->Shaders[whole_program->NumShaders] = shader;
+      whole_program->NumShaders++;
+
+      const unsigned len = strlen(files[i]);
+      if (len < 6)
+         goto fail;
+
+      const char *const ext = & files[i][len - 5];
+      /* TODO add support to read a .shader_test */
+      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
+         goto fail;
+      shader->Stage = _mesa_shader_enum_to_shader_stage(shader->Type);
+
+      shader->Source = load_text_file(whole_program, files[i]);
+      if (shader->Source == NULL) {
+         printf("File \"%s\" does not exist.\n", files[i]);
+         exit(EXIT_FAILURE);
+      }
+
+      compile_shader(ctx, shader);
+
+      if (strlen(shader->InfoLog) > 0)
+         printf("Info log for %s:\n%s\n", files[i], shader->InfoLog);
+
+      if (!shader->CompileStatus) {
+         status = EXIT_FAILURE;
+         break;
+      }
+   }
+
+   if ((status == EXIT_SUCCESS) && options->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++) {
+         struct gl_shader *shader = whole_program->_LinkedShaders[i];
+
+         if (!shader)
+            continue;
+
+         shader->Program = rzalloc(shader, gl_program);
+         init_gl_program(shader->Program, shader->Type);
+      }
+   }
+
+   return whole_program;
+
+fail:
+   ralloc_free(whole_program);
+   return NULL;
+}
+
+extern "C" void
+standalone_compiler_cleanup(struct gl_shader_program *whole_program)
+{
+   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;
+
+   ralloc_free(whole_program);
+   _mesa_glsl_release_types();
+   _mesa_glsl_release_builtin_functions();
+}