*
**************************************************************************/
+#include <sstream>
#include <string.h>
#include <limits.h> // for CHAR_MAX
#include <getopt.h>
#include "trace_parser.hpp"
#include "trace_writer.hpp"
+#define STRNCMP_LITERAL(var, literal) strncmp((var), (literal), sizeof (literal) -1)
+
static const char *synopsis = "Create a new trace by trimming an existing trace.";
static void
};
class TraceAnalyzer {
- /* Map for tracking resource dependencies between calls. */
- std::map<const char *, std::set<unsigned>, stringCompare > resources;
+ /* Maps for tracking resource dependencies between calls. */
+ std::map<std::string, std::set<unsigned> > resources;
+ std::map<std::string, std::set<std::string> > dependencies;
+
+ /* Maps for tracking OpenGL state. */
+ std::map<GLenum, unsigned> texture_map;
/* The final set of calls required. This consists of calls added
* explicitly with the require() method as well as all calls
/* Provide: Record that the given call affects the given resource
* as a side effect. */
- void provide(const char *resource, trace::CallNo call_no) {
+ void provide(std::string resource, trace::CallNo call_no) {
resources[resource].insert(call_no);
}
- /* Consume: Add all calls that provide the given resource to the
- * required list, then clear the list for this resource. */
- void consume(const char *resource) {
+ /* Link: Establish a dependency between resource 'resource' and
+ * resource 'dependency'. This dependency is captured by name so
+ * that if the list of calls that provide 'dependency' grows
+ * before 'resource' is consumed, those calls will still be
+ * captured. */
+ void link(std::string resource, std::string dependency) {
+ dependencies[resource].insert(dependency);
+ }
+
+ /* Unlink: Remove dependency from 'resource' on 'dependency'. */
+ void unlink(std::string resource, std::string dependency) {
+ dependencies[resource].erase(dependency);
+ if (dependencies[resource].size() == 0) {
+ dependencies.erase(resource);
+ }
+ }
+
+ /* Unlink all: Remove dependencies from 'resource' to all other
+ * resources. */
+ void unlinkAll(std::string resource) {
+ dependencies.erase(resource);
+ }
+
+ /* Resolve: Recursively compute all calls providing 'resource',
+ * (including linked dependencies of 'resource' on other
+ * resources). */
+ std::set<unsigned> resolve(std::string resource) {
+ std::set<std::string> *deps;
+ std::set<std::string>::iterator dep;
std::set<unsigned> *calls;
std::set<unsigned>::iterator call;
- /* Insert as required all calls that provide 'resource',
- * then clear these calls. */
+ std::set<unsigned> result, deps_set;
+
+ /* Recursively chase dependencies. */
+ if (dependencies.count(resource)) {
+ deps = &dependencies[resource];
+ for (dep = deps->begin(); dep != deps->end(); dep++) {
+ deps_set = resolve(*dep);
+ for (call = deps_set.begin(); call != deps_set.end(); call++) {
+ result.insert(*call);
+ }
+ }
+ }
+
+ /* Also look for calls that directly provide 'resource' */
if (resources.count(resource)) {
calls = &resources[resource];
for (call = calls->begin(); call != calls->end(); call++) {
- required.insert(*call);
+ result.insert(*call);
}
- resources.erase(resource);
+ }
+
+ return result;
+ }
+
+ /* Consume: Resolve all calls that provide the given resource, and
+ * add them to the required list. Then clear the call list for
+ * 'resource' along with any dependencies. */
+ void consume(std::string resource) {
+
+ std::set<unsigned> calls;
+ std::set<unsigned>::iterator call;
+
+ calls = resolve(resource);
+
+ dependencies.erase(resource);
+ resources.erase(resource);
+
+ for (call = calls.begin(); call != calls.end(); call++) {
+ required.insert(*call);
}
}
void stateTrackPreCall(trace::Call *call) {
- if (strcmp(call->name(), "glBegin") == 0) {
+ const char *name = call->name();
+
+ if (strcmp(name, "glBegin") == 0) {
insideBeginEnd = true;
return;
}
- if (strcmp(call->name(), "glBeginTransformFeedback") == 0) {
+ if (strcmp(name, "glBeginTransformFeedback") == 0) {
transformFeedbackActive = true;
return;
}
- if (strcmp(call->name(), "glBindFramebuffer") == 0) {
+ if (strcmp(name, "glBindTexture") == 0) {
+ GLenum target;
+ GLuint texture;
+
+ target = static_cast<GLenum>(call->arg(0).toSInt());
+ texture = call->arg(1).toUInt();
+
+ if (texture == 0) {
+ texture_map.erase(target);
+ } else {
+ texture_map[target] = texture;
+ }
+
+ return;
+ }
+
+ if (strcmp(name, "glBindFramebuffer") == 0) {
GLenum target;
GLuint framebuffer;
void stateTrackPostCall(trace::Call *call) {
- if (strcmp(call->name(), "glEnd") == 0) {
+ const char *name = call->name();
+
+ if (strcmp(name, "glEnd") == 0) {
insideBeginEnd = false;
return;
}
- if (strcmp(call->name(), "glEndTransformFeedback") == 0) {
+ if (strcmp(name, "glEndTransformFeedback") == 0) {
transformFeedbackActive = false;
return;
}
+ /* If this swapbuffers was included in the trace then it will
+ * have already consumed all framebuffer dependencies. If not,
+ * then clear them now so that they don't carry over into the
+ * next frame. */
if (call->flags & trace::CALL_FLAG_SWAP_RENDERTARGET &&
call->flags & trace::CALL_FLAG_END_FRAME) {
+ dependencies.erase("framebuffer");
resources.erase("framebuffer");
return;
}
}
void recordSideEffects(trace::Call *call) {
+
+ const char *name = call->name();
+
/* If call is flagged as no side effects, then we are done here. */
if (call->flags & trace::CALL_FLAG_NO_SIDE_EFFECTS) {
return;
return;
}
+ if (strcmp(name, "glGenTextures") == 0) {
+ const trace::Array *textures = dynamic_cast<const trace::Array *>(&call->arg(1));
+ size_t i;
+ GLuint texture;
+
+ if (textures) {
+ for (i = 0; i < textures->size(); i++) {
+ std::stringstream ss;
+
+ texture = textures->values[i]->toUInt();
+ ss << "texture-" << texture;
+
+ provide(ss.str(), call->no);
+ }
+ }
+ return;
+ }
+
+ if (strcmp(name, "glBindTexture") == 0) {
+ GLenum target;
+ GLuint texture;
+
+ std::stringstream ss_target, ss_texture;
+
+ target = static_cast<GLenum>(call->arg(0).toSInt());
+ texture = call->arg(1).toUInt();
+
+ ss_target << "texture-target-" << target;
+ ss_texture << "texture-" << texture;
+
+ resources.erase(ss_target.str());
+ provide(ss_target.str(), call->no);
+
+ unlinkAll(ss_target.str());
+ link(ss_target.str(), ss_texture.str());
+
+ return;
+ }
+
+ /* FIXME: Need to handle glMultTexImage and friends. */
+ if (STRNCMP_LITERAL(name, "glTexImage") == 0 ||
+ STRNCMP_LITERAL(name, "glTexSubImage") == 0 ||
+ STRNCMP_LITERAL(name, "glCopyTexImage") == 0 ||
+ STRNCMP_LITERAL(name, "glCopyTexSubImage") == 0 ||
+ STRNCMP_LITERAL(name, "glCompressedTexImage") == 0 ||
+ STRNCMP_LITERAL(name, "glCompressedTexSubImage") == 0 ||
+ strcmp(name, "glInvalidateTexImage") == 0 ||
+ strcmp(name, "glInvalidateTexSubImage") == 0) {
+
+ std::set<unsigned> *calls;
+ std::set<unsigned>::iterator c;
+ std::stringstream ss_target, ss_texture;
+
+ GLenum target = static_cast<GLenum>(call->arg(0).toSInt());
+
+ ss_target << "texture-target-" << target;
+ ss_texture << "texture-" << texture_map[target];
+
+ /* The texture resource depends on this call and any calls
+ * providing the given texture target. */
+ provide(ss_texture.str(), call->no);
+
+ if (resources.count(ss_target.str())) {
+ calls = &resources[ss_target.str()];
+ for (c = calls->begin(); c != calls->end(); c++) {
+ provide(ss_texture.str(), *c);
+ }
+ }
+
+ return;
+ }
+
+ if (strcmp(name, "glEnable") == 0) {
+ GLenum cap;
+
+ cap = static_cast<GLenum>(call->arg(0).toSInt());
+
+ if (cap == GL_TEXTURE_1D ||
+ cap == GL_TEXTURE_2D ||
+ cap == GL_TEXTURE_3D ||
+ cap == GL_TEXTURE_CUBE_MAP)
+ {
+ std::stringstream ss;
+
+ ss << "texture-target-" << cap;
+
+ link("render-state", ss.str());
+ }
+
+ provide("state", call->no);
+
+ return;
+ }
+
+ if (strcmp(name, "glDisable") == 0) {
+ GLenum cap;
+
+ cap = static_cast<GLenum>(call->arg(0).toSInt());
+
+ if (cap == GL_TEXTURE_1D ||
+ cap == GL_TEXTURE_2D ||
+ cap == GL_TEXTURE_3D ||
+ cap == GL_TEXTURE_CUBE_MAP)
+ {
+ std::stringstream ss;
+
+ ss << "texture-target-" << cap;
+
+ unlink("render-state", ss.str());
+ }
+
+ provide("state", call->no);
+
+ return;
+ }
+
/* Handle all rendering operations, (even though only glEnd is
* flagged as a rendering operation we treat everything from
* glBegin through glEnd as a rendering operation). */
if (call->flags & trace::CALL_FLAG_RENDER ||
insideBeginEnd) {
+ std::set<unsigned> calls;
+ std::set<unsigned>::iterator c;
+
provide("framebuffer", call->no);
+ calls = resolve("render-state");
+
+ for (c = calls.begin(); c != calls.end(); c++) {
+ provide("framebuffer", *c);
+ }
+
/* In some cases, rendering has side effects beyond the
* framebuffer update. */
if (renderingHasSideEffect()) {
provide("state", call->no);
+ for (c = calls.begin(); c != calls.end(); c++) {
+ provide("state", *c);
+ }
}
return;
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