#include <assert.h>
extern "C" {
-#include <talloc.h>
#include "main/core.h" /* for struct gl_context */
}
+#include "ralloc.h"
#include "ast.h"
#include "glsl_parser_extras.h"
#include "glsl_parser.h"
this->scanner = NULL;
this->translation_unit.make_empty();
this->symbols = new(mem_ctx) glsl_symbol_table;
- this->info_log = talloc_strdup(mem_ctx, "");
+ this->info_log = ralloc_strdup(mem_ctx, "");
this->error = false;
this->loop_or_switch_nesting = NULL;
this->Const.MaxFragmentUniformComponents = ctx->Const.FragmentProgram.MaxUniformComponents;
this->Const.MaxDrawBuffers = ctx->Const.MaxDrawBuffers;
+
+ /* Note: Once the OpenGL 3.0 'forward compatible' context or the OpenGL 3.2
+ * Core context is supported, this logic will need change. Older versions of
+ * GLSL are no longer supported outside the compatibility contexts of 3.x.
+ */
+ this->Const.GLSL_100ES = (ctx->API == API_OPENGLES2)
+ || ctx->Extensions.ARB_ES2_compatibility;
+ this->Const.GLSL_110 = (ctx->API == API_OPENGL);
+ this->Const.GLSL_120 = (ctx->API == API_OPENGL)
+ && (ctx->Const.GLSLVersion >= 120);
+ this->Const.GLSL_130 = (ctx->API == API_OPENGL)
+ && (ctx->Const.GLSLVersion >= 130);
+
+ const unsigned lowest_version =
+ (ctx->API == API_OPENGLES2) || ctx->Extensions.ARB_ES2_compatibility
+ ? 100 : 110;
+ const unsigned highest_version =
+ (ctx->API == API_OPENGL) ? ctx->Const.GLSLVersion : 100;
+ char *supported = ralloc_strdup(this, "");
+
+ for (unsigned ver = lowest_version; ver <= highest_version; ver += 10) {
+ const char *const prefix = (ver == lowest_version)
+ ? ""
+ : ((ver == highest_version) ? ", and " : ", ");
+
+ ralloc_asprintf_append(& supported, "%s%d.%02d%s",
+ prefix,
+ ver / 100, ver % 100,
+ (ver == 100) ? " ES" : "");
+ }
+
+ this->supported_version_string = supported;
}
const char *
state->error = true;
assert(state->info_log != NULL);
- state->info_log = talloc_asprintf_append(state->info_log,
- "%u:%u(%u): error: ",
+ ralloc_asprintf_append(&state->info_log, "%u:%u(%u): error: ",
locp->source,
locp->first_line,
locp->first_column);
va_start(ap, fmt);
- state->info_log = talloc_vasprintf_append(state->info_log, fmt, ap);
+ ralloc_vasprintf_append(&state->info_log, fmt, ap);
va_end(ap);
- state->info_log = talloc_strdup_append(state->info_log, "\n");
+ ralloc_strcat(&state->info_log, "\n");
}
va_list ap;
assert(state->info_log != NULL);
- state->info_log = talloc_asprintf_append(state->info_log,
- "%u:%u(%u): warning: ",
+ ralloc_asprintf_append(&state->info_log, "%u:%u(%u): warning: ",
locp->source,
locp->first_line,
locp->first_column);
va_start(ap, fmt);
- state->info_log = talloc_vasprintf_append(state->info_log, fmt, ap);
+ ralloc_vasprintf_append(&state->info_log, fmt, ap);
va_end(ap);
- state->info_log = talloc_strdup_append(state->info_log, "\n");
+ ralloc_strcat(&state->info_log, "\n");
+}
+
+
+/**
+ * Enum representing the possible behaviors that can be specified in
+ * an #extension directive.
+ */
+enum ext_behavior {
+ extension_disable,
+ extension_enable,
+ extension_require,
+ extension_warn
+};
+
+/**
+ * Element type for _mesa_glsl_supported_extensions
+ */
+struct _mesa_glsl_extension {
+ /**
+ * Name of the extension when referred to in a GLSL extension
+ * statement
+ */
+ const char *name;
+
+ /** True if this extension is available to vertex shaders */
+ bool avail_in_VS;
+
+ /** True if this extension is available to geometry shaders */
+ bool avail_in_GS;
+
+ /** True if this extension is available to fragment shaders */
+ bool avail_in_FS;
+
+ /** True if this extension is available to desktop GL shaders */
+ bool avail_in_GL;
+
+ /** True if this extension is available to GLES shaders */
+ bool avail_in_ES;
+
+ /**
+ * Flag in the gl_extensions struct indicating whether this
+ * extension is supported by the driver, or
+ * &gl_extensions::dummy_true if supported by all drivers.
+ *
+ * Note: the type (GLboolean gl_extensions::*) is a "pointer to
+ * member" type, the type-safe alternative to the "offsetof" macro.
+ * In a nutshell:
+ *
+ * - foo bar::* p declares p to be an "offset" to a field of type
+ * foo that exists within struct bar
+ * - &bar::baz computes the "offset" of field baz within struct bar
+ * - x.*p accesses the field of x that exists at "offset" p
+ * - x->*p is equivalent to (*x).*p
+ */
+ const GLboolean gl_extensions::* supported_flag;
+
+ /**
+ * Flag in the _mesa_glsl_parse_state struct that should be set
+ * when this extension is enabled.
+ *
+ * See note in _mesa_glsl_extension::supported_flag about "pointer
+ * to member" types.
+ */
+ bool _mesa_glsl_parse_state::* enable_flag;
+
+ /**
+ * Flag in the _mesa_glsl_parse_state struct that should be set
+ * when the shader requests "warn" behavior for this extension.
+ *
+ * See note in _mesa_glsl_extension::supported_flag about "pointer
+ * to member" types.
+ */
+ bool _mesa_glsl_parse_state::* warn_flag;
+
+
+ bool compatible_with_state(const _mesa_glsl_parse_state *state) const;
+ void set_flags(_mesa_glsl_parse_state *state, ext_behavior behavior) const;
+};
+
+#define EXT(NAME, VS, GS, FS, GL, ES, SUPPORTED_FLAG) \
+ { "GL_" #NAME, VS, GS, FS, GL, ES, &gl_extensions::SUPPORTED_FLAG, \
+ &_mesa_glsl_parse_state::NAME##_enable, \
+ &_mesa_glsl_parse_state::NAME##_warn }
+
+/**
+ * Table of extensions that can be enabled/disabled within a shader,
+ * and the conditions under which they are supported.
+ */
+static const _mesa_glsl_extension _mesa_glsl_supported_extensions[] = {
+ /* target availability API availability */
+ /* name VS GS FS GL ES supported flag */
+ EXT(ARB_draw_buffers, false, false, true, true, false, dummy_true),
+ EXT(ARB_draw_instanced, true, false, false, true, false, ARB_draw_instanced),
+ EXT(ARB_explicit_attrib_location, true, false, true, true, false, ARB_explicit_attrib_location),
+ EXT(ARB_fragment_coord_conventions, true, false, true, true, false, ARB_fragment_coord_conventions),
+ EXT(ARB_texture_rectangle, true, false, true, true, false, dummy_true),
+ EXT(EXT_texture_array, true, false, true, true, false, EXT_texture_array),
+ EXT(ARB_shader_texture_lod, true, false, true, true, false, ARB_shader_texture_lod),
+ EXT(ARB_shader_stencil_export, false, false, true, true, false, ARB_shader_stencil_export),
+ EXT(AMD_conservative_depth, true, false, true, true, false, AMD_conservative_depth),
+ EXT(AMD_shader_stencil_export, false, false, true, true, false, ARB_shader_stencil_export),
+ EXT(OES_texture_3D, true, false, true, false, true, EXT_texture3D),
+};
+
+#undef EXT
+
+
+/**
+ * Determine whether a given extension is compatible with the target,
+ * API, and extension information in the current parser state.
+ */
+bool _mesa_glsl_extension::compatible_with_state(const _mesa_glsl_parse_state *
+ state) const
+{
+ /* Check that this extension matches the type of shader we are
+ * compiling to.
+ */
+ switch (state->target) {
+ case vertex_shader:
+ if (!this->avail_in_VS) {
+ return false;
+ }
+ break;
+ case geometry_shader:
+ if (!this->avail_in_GS) {
+ return false;
+ }
+ break;
+ case fragment_shader:
+ if (!this->avail_in_FS) {
+ return false;
+ }
+ break;
+ default:
+ assert (!"Unrecognized shader target");
+ return false;
+ }
+
+ /* Check that this extension matches whether we are compiling
+ * for desktop GL or GLES.
+ */
+ if (state->es_shader) {
+ if (!this->avail_in_ES) return false;
+ } else {
+ if (!this->avail_in_GL) return false;
+ }
+
+ /* Check that this extension is supported by the OpenGL
+ * implementation.
+ *
+ * Note: the ->* operator indexes into state->extensions by the
+ * offset this->supported_flag. See
+ * _mesa_glsl_extension::supported_flag for more info.
+ */
+ return state->extensions->*(this->supported_flag);
+}
+
+/**
+ * Set the appropriate flags in the parser state to establish the
+ * given behavior for this extension.
+ */
+void _mesa_glsl_extension::set_flags(_mesa_glsl_parse_state *state,
+ ext_behavior behavior) const
+{
+ /* Note: the ->* operator indexes into state by the
+ * offsets this->enable_flag and this->warn_flag. See
+ * _mesa_glsl_extension::supported_flag for more info.
+ */
+ state->*(this->enable_flag) = (behavior != extension_disable);
+ state->*(this->warn_flag) = (behavior == extension_warn);
+}
+
+/**
+ * Find an extension by name in _mesa_glsl_supported_extensions. If
+ * the name is not found, return NULL.
+ */
+static const _mesa_glsl_extension *find_extension(const char *name)
+{
+ for (unsigned i = 0; i < Elements(_mesa_glsl_supported_extensions); ++i) {
+ if (strcmp(name, _mesa_glsl_supported_extensions[i].name) == 0) {
+ return &_mesa_glsl_supported_extensions[i];
+ }
+ }
+ return NULL;
}
bool
_mesa_glsl_process_extension(const char *name, YYLTYPE *name_locp,
- const char *behavior, YYLTYPE *behavior_locp,
+ const char *behavior_string, YYLTYPE *behavior_locp,
_mesa_glsl_parse_state *state)
{
- enum {
- extension_disable,
- extension_enable,
- extension_require,
- extension_warn
- } ext_mode;
-
- if (strcmp(behavior, "warn") == 0) {
- ext_mode = extension_warn;
- } else if (strcmp(behavior, "require") == 0) {
- ext_mode = extension_require;
- } else if (strcmp(behavior, "enable") == 0) {
- ext_mode = extension_enable;
- } else if (strcmp(behavior, "disable") == 0) {
- ext_mode = extension_disable;
+ ext_behavior behavior;
+ if (strcmp(behavior_string, "warn") == 0) {
+ behavior = extension_warn;
+ } else if (strcmp(behavior_string, "require") == 0) {
+ behavior = extension_require;
+ } else if (strcmp(behavior_string, "enable") == 0) {
+ behavior = extension_enable;
+ } else if (strcmp(behavior_string, "disable") == 0) {
+ behavior = extension_disable;
} else {
_mesa_glsl_error(behavior_locp, state,
"Unknown extension behavior `%s'",
- behavior);
+ behavior_string);
return false;
}
- bool unsupported = false;
-
if (strcmp(name, "all") == 0) {
- if ((ext_mode == extension_enable) || (ext_mode == extension_require)) {
+ if ((behavior == extension_enable) || (behavior == extension_require)) {
_mesa_glsl_error(name_locp, state, "Cannot %s all extensions",
- (ext_mode == extension_enable)
+ (behavior == extension_enable)
? "enable" : "require");
return false;
- }
- } else if (strcmp(name, "GL_ARB_draw_buffers") == 0) {
- /* This extension is only supported in fragment shaders.
- */
- if (state->target != fragment_shader) {
- unsupported = true;
- } else {
- state->ARB_draw_buffers_enable = (ext_mode != extension_disable);
- state->ARB_draw_buffers_warn = (ext_mode == extension_warn);
- }
- } else if (strcmp(name, "GL_ARB_explicit_attrib_location") == 0) {
- state->ARB_explicit_attrib_location_enable =
- (ext_mode != extension_disable);
- state->ARB_explicit_attrib_location_warn =
- (ext_mode == extension_warn);
-
- unsupported = !state->extensions->ARB_explicit_attrib_location;
- } else if (strcmp(name, "GL_ARB_fragment_coord_conventions") == 0) {
- state->ARB_fragment_coord_conventions_enable =
- (ext_mode != extension_disable);
- state->ARB_fragment_coord_conventions_warn =
- (ext_mode == extension_warn);
-
- unsupported = !state->extensions->ARB_fragment_coord_conventions;
- } else if (strcmp(name, "GL_ARB_texture_rectangle") == 0) {
- state->ARB_texture_rectangle_enable = (ext_mode != extension_disable);
- state->ARB_texture_rectangle_warn = (ext_mode == extension_warn);
- } else if (strcmp(name, "GL_EXT_texture_array") == 0) {
- state->EXT_texture_array_enable = (ext_mode != extension_disable);
- state->EXT_texture_array_warn = (ext_mode == extension_warn);
-
- unsupported = !state->extensions->EXT_texture_array;
- } else if (strcmp(name, "GL_ARB_shader_stencil_export") == 0) {
- if (state->target != fragment_shader) {
- unsupported = true;
} else {
- state->ARB_shader_stencil_export_enable = (ext_mode != extension_disable);
- state->ARB_shader_stencil_export_warn = (ext_mode == extension_warn);
- unsupported = !state->extensions->ARB_shader_stencil_export;
+ for (unsigned i = 0;
+ i < Elements(_mesa_glsl_supported_extensions); ++i) {
+ const _mesa_glsl_extension *extension
+ = &_mesa_glsl_supported_extensions[i];
+ if (extension->compatible_with_state(state)) {
+ _mesa_glsl_supported_extensions[i].set_flags(state, behavior);
+ }
+ }
}
} else {
- unsupported = true;
- }
-
- if (unsupported) {
- static const char *const fmt = "extension `%s' unsupported in %s shader";
-
- if (ext_mode == extension_require) {
- _mesa_glsl_error(name_locp, state, fmt,
- name, _mesa_glsl_shader_target_name(state->target));
- return false;
+ const _mesa_glsl_extension *extension = find_extension(name);
+ if (extension && extension->compatible_with_state(state)) {
+ extension->set_flags(state, behavior);
} else {
- _mesa_glsl_warning(name_locp, state, fmt,
- name, _mesa_glsl_shader_target_name(state->target));
+ static const char *const fmt = "extension `%s' unsupported in %s shader";
+
+ if (behavior == extension_require) {
+ _mesa_glsl_error(name_locp, state, fmt,
+ name, _mesa_glsl_shader_target_name(state->target));
+ return false;
+ } else {
+ _mesa_glsl_warning(name_locp, state, fmt,
+ name, _mesa_glsl_shader_target_name(state->target));
+ }
}
}
printf("? ");
subexpressions[1]->print();
printf(": ");
- subexpressions[1]->print();
+ subexpressions[2]->print();
break;
case ast_array_index:
{
if (identifier == NULL) {
static unsigned anon_count = 1;
- identifier = talloc_asprintf(this, "#anon_struct_%04x", anon_count);
+ identifier = ralloc_asprintf(this, "#anon_struct_%04x", anon_count);
anon_count++;
}
name = identifier;
{
GLboolean progress = GL_FALSE;
- progress = do_sub_to_add_neg(ir) || progress;
+ progress = lower_instructions(ir, SUB_TO_ADD_NEG) || progress;
if (linked) {
progress = do_function_inlining(ir) || progress;
}
progress = do_structure_splitting(ir) || progress;
progress = do_if_simplification(ir) || progress;
+ progress = do_discard_simplification(ir) || progress;
progress = do_copy_propagation(ir) || progress;
+ progress = do_copy_propagation_elements(ir) || progress;
if (linked)
progress = do_dead_code(ir) || progress;
else
progress = optimize_redundant_jumps(ir) || progress;
loop_state *ls = analyze_loop_variables(ir);
- progress = set_loop_controls(ir, ls) || progress;
- progress = unroll_loops(ir, ls, max_unroll_iterations) || progress;
+ if (ls->loop_found) {
+ progress = set_loop_controls(ir, ls) || progress;
+ progress = unroll_loops(ir, ls, max_unroll_iterations) || progress;
+ }
delete ls;
return progress;
projects / mesa.git / blobdiff